WEISSE TANDEM-ORGANISCHE LICHTEMITTIERENDE VORRICHTUNG

Eine weiße Tandem-organische lichtemittierende Vorrichtung mit verbessertem Wirkungsgrad, Spannung und Lebensdauer weist eine erste Elektrode und eine zweite Elektrode, die einander gegenüberliegen, eine zwischen der ersten Elektrode und der zweiten Elektrode gebildete ladungserzeugende Schicht, einen zwischen der ersten Elektrode und der ladungserzeugenden Schicht angeordneten ersten Stapel, wobei der erste Stapel eine blaues Licht emittierende erste lichtemittierende Schicht aufweist, und einen zwischen der ladungserzeugenden Schicht und der zweiten Elektrode angeordneten zweiten Stapel auf, wobei der zweite Stapel eine zweite lichtemittierende Schicht aufweist, die einen oder mehrere mit einer phosphoreszierenden Dotiersubstanz, die Licht einer längeren Wellenlänge als blaues Licht emittiert, dotierte Wirte aufweist, wobei die ladungserzeugende Schicht eine mit einem Metall dotierte ladungserzeugende Schicht des N-Typs und eine aus einem organischen Material hergestellte ladungserzeugende ...

Organisches Elektrolumineszenz-Element, Beleuchtundskörper und Lebensmittellagervorrichtung

Die Aufgabe der vorliegenden Erfindung ist die Bereitstellung eines organischen Elektrolumineszenz-Elements, das sowohl für eine Lebensmittelbeleuchtung bei niedriger Temperatur als auch für eine Innenraumbeleuchtung bei Raumtemperatur geeignet ist. Das organische Elektrolumineszenz-Element gemäß der vorliegenden Erfindung hat solche Eigenschaften, dass ein Maximum eines allgemeinen Farbwiedergabeindex Ra in einem Bereich einer Elementtemperatur von 5°C bis 60°C im Bereich der Elementtemperatur von 15°C bis 35°C liegt und dass mindestens eines der Maxima von speziellen Farbwiedergabeindizes R10, R11, R12 und R13 im Bereich der Elementtemperatur von 5°C bis 60°C im Bereich der Elementtemperatur von 5°C bis 35°C liegt.

Organic light emitting display device

Light emitting device and organic light emitting display device including the same

Polymers, monomers and methods of forming polymers

A method of forming a crosslinked polymer comprising the step of reacting a crosslinkable group in the presence of a polymer, wherein: the crosslinkable group comprises a core unit substituted with at least one crosslinkable unit of formula (I) (the formula is shown in the specification): the crosslinkable group is bound to the polymer or is a crosslinkable compound mixed with the polymer; Ar is aryl or heteroaryl which may be unsubstituted or substituted with one or more substituents independently selected from monovalent substituents and a divalent linking group linking the unit of formula (I) to the core unit; and R is independently in each occurrence H, a monovalent substituent or a divalent linking group linking the unit of formula (I) to the core unit, with the proviso that at least one R is not H.

Display device

Light-emitting element, light-emitting device, display device, and electronic apparatus

Display panel and display device

DISPLAY DEVICE AND PRODUCTION METHOD THEREFOR

Organic light-emitting device

Method of manufacturing a pixel of an oled micro-display

WHITE ORGANIC LIGHT EMITTING DIODE DEVICE

유기 전계 발광 소자

... 은(Ag)을 주성분으로 하는 투명 전극과, 금속을 포함하는 반사 전극과, 투명 전극과 반사 전극 사이에 형성된 적어도 1층 이상의 발광층을 구비하고, 파장 450nm 내지 750nm의 광에서의 소자 반사율의 최댓값과 최솟값의 차가 30% 이내인 유기 전계 발광 소자를 구성한다.

유기 EL 표시 장치

... 표시 영역 내에 매트릭스 형상으로 배치된 화소의 각각에 형성된 도전성 무기 재료를 포함하는 하부 전극(131)과, 하부 전극에 접하고, 발광하는 발광층을 포함하는 복수의 상이한 유기 재료의 층을 포함하는 발광 유기층(132)과, 발광 유기층에 접하고, 표시 영역의 전체를 덮도록 형성되고, 도전성 무기 재료를 포함하는 상부 전극(133)과, 상부 전극에 접하고, 표시 영역의 전체를 덮도록 형성되고, 도전성 유기 재료를 포함하는 도전성 유기층(134)을 구비한다.

Display device and method of manufacturing the same

Organic light emitting display apparatus and manufacturing method thoreof

ORGANIC LIGHT EMITTING DISPLAY DEVICE

The present invention relates to an organic light emitting display device capable of enhancing resonance stability and increasing light emitting efficiency. The organic light emitting display device according to an embodiment of the present invention includes first electrodes disposed on a first substrate, a light emitting layer disposed on the first electrodes, and a second electrode disposed on the light emitting layer. A region where the first electrode, the light emitting layer, and the second electrode are sequentially stacked is defined as a pixel. The light emitting layer includes a first low refractive film disposed in a predetermined region in the pixel. COPYRIGHT KIPO 2018 ...

Lighting Device

ORGANOMETALLIC COMPLEX, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE AND LIGHTING DEVICE

Organic electroluminescent element

Disclosed is an organic electroluminescent element which comprises: a positive electrode; a negative electrode; and at least a hole transport layer, a first light emitting layer, a second light emitting layer and an electron transport layer, which are arranged between the positive electrode and the negative electrode. The first light emitting layer contains a first host material and a first light emitting material. The second light emitting layer is formed continuous to the first light emitting layer on the negative electrode side thereof, and contains a second host material and a second light emitting material. The second host material is a monoazine derivative, a diazine derivative or a triazine derivative, and the first light emitting material and the second light emitting material are metal complexes that are different from each other.

Organic electroluminescence element

The present invention provides an organic electroluminescence element having excellent long term durability and life property. A plurality of luminous layers 4 are laminated between an anode 1 and a cathode 2 through a middle layer 3. The middle layer 3 having a mixing layer 3a, a first layer 3b and a hole injection layer 3c are formed in this order from the anode 1 to the cathode 2, wherein the mixing layer 3a comprises a electron-donating substance and a electron transporting organic material and the first layer 3b consists of a electron-donating substance. The thickness of the first layer 3b is in the range of 0.2 to 20nm. The hole injection layer 3c is formed by a electron-accepting organic material.

Light-emitting element, light-emitting device, electronic device, and lighting device

A light-emitting element with a high current efficiency is provided. A low-power consumption light-emitting device is also provided. In addition, low-power consumption electronic device and lighting device are provided. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a first light-emitting layer and a second light-emitting layer. The emission peak of the second light-emitting layer is at a shorter wavelength than that of the first light-emitting layer. The first light-emitting layer includes a host material and a guest material. The LUMO level of the guest material is in the range of 0.1 eV of the LUMO level of the host material.

ORGANIC PHOTONIC DEVICE.

Electroluminescent device

Organic devices and organic electroluminescent devices

ORGANIC LIGHT EMITTING DEVICE

ORGANIC LIGHT-EMITTING DEVICE AND LIGHT SOURCE DEVICE USING SAME

Provided are: an organic light-emitting device which is capable of reducing chromaticity change that accompanies increase in the current density; and a light source device which uses the organic light-emitting device. An organic light-emitting device wherein: a first emitter is added into a first light-emitting layer; a second emitter is added into a second light-emitting layer; a thirty-first emitter and a thirty-second emitter are added into a third light-emitting layer; a fourth emitter is added into a fourth light-emitting layer; the luminescence center wavelength of the first emitter is larger than the luminescence center wavelength of the second emitter; the luminescence center wavelength of the thirty-first emitter is larger than the luminescence center wavelength of the thirty-second emitter; the luminescence center wavelength of the thirty-first emitter is larger than the luminescence center wavelength of the fourth emitter; the luminescence center wavelength of the first emitter ...

MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME

Provided is a compound represented by formula (1).

Organic light emitting display device with two emission portions

An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved.

Organic compound and light emitting diode and organic light emitting diode display device using the same

The present disclosure relates to an organic compound, a light emitting diode and an organic light emitting diode display device using the same. The organic compound is represented by a following chemical formula 1.

ORGANIC ELECTROLUMINESCENT DEVICE

An organic electroluminescent device includes at least two light-emissive units provided between a cathode electrode and an anode electrode opposed to the cathode electrode, each of the light-emissive units including at least one light-emissive layer. The light-emissive units are partitioned from each other by at least one charge generation layer, the charge generation layer being an electrically insulating layer having a resistivity of not less than 1.0×102 cm.

Organic light-emitting diode

The invention relates to an organic light-emitting diode (1000) with an organic layer sequence (100). The organic layer sequence (100) comprises a first organic emitter layer (1) for generating electromagnetic radiation of a first wavelength range (10) and a second organic emitter layer (2) for generating electromagnetic radiation of a second wavelength range (20). A charge carrier generation layer sequence (33), CGL for short, is arranged between the first (1) and the second (2) emitter layer, and the first emitter layer (1) and the second emitter layer (2) are electrically connected in series via said CGL. The CGL (33) additionally has a converter material which converts the radiation of the first (10) and/or the second (20) wavelength range at least partially into radiation of a third wavelength range (30). In this manner, the organic light-emitting diode (1000) can emit mixed light with components of the first (10), second (20), and third (30) wavelength range.

LIGHT EMITTING ELEMENT, DISPLAY APPARATUS, AND LIGHTING APPARATUS

A light emitting element includes a first electrode, a second electrode, and an organic layer in which a first luminescent layer and a second luminescent layer are provided from a first electrode side, the organic layer being provided between the first electrode and the second electrode, light from the organic layer being reflected on an interface of the luminescent layer and the first electrode, passing through the second electrode, and being emitted to outside, a first optical transparent layer, a second optical transparent layer, and a third optical transparent layer being provided, from a second luminescent layer side, on a side of the second luminescent layer, the side being opposite to the first luminescent layer.

Light-emitting element, light-emitting device, electronic device, and lighting device

An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

Display device

A display device comprising: pixel electrodes; an electroluminescent layer composed of layers laminated with each other, the multiple layers including a light-emitting layer and a charge generation layer; and a counter electrode. The multiple layers include a first layer composed of sections separated from each other and overlapping with the pixel electrodes, a second layer in contact with the first layer and continuous over the pixel electrodes, and a third layer interposed between the first layer and the second layer, the third layer being in contact with the first layer and the second layer over an adjacent pair of the sections. At least the charge generation layer is the first layer. The second layer is adapted to inject or transport carriers, either electrons or holes. The third layer is adapted to block the carriers injected or transported by the second layer.

Organic light emitting diode display including white light emitting diodes

An organic light emitting diode display includes: a substrate; a first electrode on the substrate; a second electrode opposed to the first electrode; a first light emitting unit and a second light emitting unit between the first electrode and the second electrode; and a charge generation layer between the first light emitting unit and the second light emitting unit. The first light emitting unit includes a blue fluorescent light emitting layer. The second light emitting unit includes a blue light emitting layer and a yellow light emitting layer.

ORGANIC LIGHT-EMITTING DIODE, METHOD FOR MANUFACTURING SAME, AND DISPLAY PANEL

An organic light-emitting diode (OLED) includes: a first electrode, a first light-emitting layer disposed on a side of the first electrode, a charge generation layer disposed on a side, away from the first electrode, of the first light-emitting layer, a second light-emitting layer disposed on a side, away from the first light-emitting layer, of the charge generation layer, and a second electrode disposed on a side, away from the charge generation layer, of the second light-emitting layer. The OLED further includes: a process conversion layer, disposed between the first electrode and the second electrode, and configured to fill an uneven region between the first electrode and the second electrode. 1. An organic light-emitting diode (OLED) , comprising:a first electrode;a first light-emitting layer, disposed on a side of the first electrode;a charge generation layer, disposed on a side, away from the first electrode, of the first light-emitting layer;a second light-emitting layer, disposed on a side, away from the first light-emitting layer, of the charge generation layer;a second electrode, disposed on a side, away from the charge generation layer, of the second light-emitting layer; anda process conversion layer, disposed between the first electrode and the second electrode, and configured to fill an uneven region between the first electrode and the second electrode.2. The OLED according to claim 1 , wherein the process conversion layer is disposed between the charge generation layer and the second light-emitting layer.3. The OLED according to claim 1 , wherein the process conversion layer is disposed between the first light-emitting layer and the charge generation layer.4. The OLED according to claim 1 , wherein the process conversion layer is disposed between the second light-emitting layer and the second electrode.5. The OLED according to claim 1 , wherein resistivity of a material of the process conversion layer is greater than 10ohm×centimeter.6. The OLED ...

ORGANIC EL MULTI-COLOR LIGHT-EMITTING DEVICE

An organic EL multi-color emitting device including a substrate, and a first light-emitting element and a second light-emitting element arranged on the surface of the substrate; the first light-emitting element including, between an anode and a cathode, a first organic layer, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the second light-emitting element including, between an anode and a cathode, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the first organic layer including a first light-emitting dopant; the third organic layer including a second light-emitting dopant; the second organic layer including any of (A) a compound including an arylamine site, and a furan site or a thiophene site, (B) a compound including an arylamine site and a site comprising a nitrogen-containing six-membered ring structure, (C) a compound including ...

ORGANIC LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME

White organic light emitting device

Electroluminescent display device

Tandem white organic light emitting device

A tandem organic light emitting device emitting white light includes a first electrode 110 and a second electrode 190 opposing each other, a charge generation layer 150 formed between the electrodes, a first stack 1100 disposed between the first electrode and the charge generation layer, the first stack including a first light emitting layer 130 emitting blue light and a second stack 1200 disposed between the charge generation layer and the second electrode, the second stack including a second light emitting layer 170 including one or more hosts doped with a phosphorescent dopant emitting light having a longer wavelength than blue light. The charge generation layer includes an n-type charge generation layer 151 doped with a group I or II metal, such as lithium, sodium, magnesium, calcium or caesium, and a p-type charge generation layer 152 made of an organic material.

Electroluminescent display device

An electroluminescent display device, including: a substrate 100 comprising: a first subpixel P1 (Figure 1); and a second subpixel P2 (Figure 1) adjacent the first subpixel; a respective first electrode 310, 320 in each of the first subpixel and the second subpixel; a trench T in a boundary between the first subpixel and the second subpixel; an emission layer 700 on the first electrode, and in the first subpixel, the second subpixel and the boundary between the first subpixel and the second subpixel, at least some of the emission layer being non-contiguous in the trench; a pore H below the emission layer inside the trench, an upper end of the pore being relatively higher than at least some of the emission layer; and further comprising a second electrode on the emission layer. In one embodiment the emission layer comprises a first stack 710, a second stack 730 and a charge generation layer 720 between the stacks wherein the first stack and charge generation layer are non-contiguous in the ...

Organic electroluminescence element, image display unit and lighting device

Organic light emitting display device

Organic light emitting composition,device and method

ORGANIC ELECTRICAL LUMINESCENCE ELEMENT

ILLUMINATION DEVICE

An illumination device according to the present invention is provided with: an organic EL illumination panel (10) which is disposed on a rack (90) or the like inside an aircraft body; and a panel drive circuit which drives the organic EL illumination panel (10) and is disposed inside the aircraft body at a location remote from the organic EL illumination panel (10). The organic EL illumination panel (10) comprises a plurality of light-emitting units having at least a light-emitting layer, and a charge generation layer which is disposed between each of the plurality of light-emitting units, thereby forming a multi-photoemission structure wherein the thickness in the stacking direction is no greater than 5 mm.

Tandem white organic light emitting device

A tandem organic light emitting device emitting white light includes a first electrode 110 and a second electrode 190 opposing each other, a charge generation layer 150 formed between the electrodes, a first stack 1100 disposed between the first electrode and the charge generation layer, the first stack including a first light emitting layer 130 emitting blue light and a second stack 1200 disposed between the charge generation layer and the second electrode, the second stack including a second light emitting layer 170 including one or more hosts doped with a phosphorescent dopant emitting light having a longer wavelength than blue light. The charge generation layer includes an n-type charge generation layer 151 doped with a group I or II metal, such as lithium, sodium, magnesium, calcium or caesium, and a p-type charge generation layer 152 made of an organic material.

Light emitting device

LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

발광 장치, 전자 기기, 및 조명 장치

... 소비전력이 낮고 신뢰성이 높은 발광 장치, 전자 기기, 또는 조명 장치를 제공한다. 발광 장치는 제 1 발광 소자, 제 2 발광 소자, 제 3 발광 소자, 및 제 4 발광 소자를 포함한다. 제 1 내지 제 4 발광 소자는 애노드와 캐소드 사이에, 같은 EL층을 포함한다. EL층은 제 1 발광층 및 제 2 발광층을 포함한다. 제 1 발광층은 형광 물질을 함유한다. 형광 물질의 톨루엔 용액에서의 형광 물질의 발광 스펙트럼의 피크 파장은 440nm 내지 460nm, 바람직하게는 440nm 내지 455nm이다. 제 2 발광층은 인광 물질을 함유한다. 제 1 발광 소자는 청색 발광을 나타낸다. 제 2 발광 소자는 녹색 발광을 나타낸다. 제 3 발광 소자는 적색 발광을 나타낸다. 제 4 발광 소자는 황색 발광을 나타낸다.

Light emitting device and electronic device

ORGANIC ELECTROLUMINESCENT ELEMENT

Organic light emitting display device and manufacturing method thereof, and donor substrate, donor substrate set using manufacturing organic light emitting display device thereof

ORGANIC LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING SAME

Provided are an organic light-emitting device and a display apparatus including the same, which have high efficiency and a long lifespan. The organic light-emitting device includes a first sub-organic light-emitting device, a second sub-organic light-emitting device, and a third sub-organic light-emitting device. The first sub-organic light-emitting device includes a first anode, a first emission layer, a first common emission part, a first buffer part, a first doping part, and a first cathode part, which are sequentially stacked. The second sub-organic light-emitting device includes a second anode, a second emission layer, a second common emission part, a second buffer part, a second doping part, and a second cathode part, which are sequentially stacked. The third sub-organic light-emitting device includes a third anode, a third common emission part, a third buffer part, a third doping part, and a third cathode part, which are sequentially stacked. The first through third common emission ...

Method of manufacturing a stacked organic light emitting diode, stacked OLED device, and apparatus for manufacturing thereof

The invention is directed at a method of manufacturing a stacked organic light emitting diode-OLED-device. The method comprises the steps of providing a carrier and forming a first organic light emitting diode on the carrier by means of solution based depositing of consecutive diode layers of said first organic light emitting diode. The method further comprises forming one or more charge injection layers on the first organic light emitting diode and forming a second organic light emitting diode on the carrier by means of solution based depositing of consecutive diode layers of said second organic light emitting diode. The step of forming of the one or more charge injection layers comprises a step of performing atomic layer deposition for depositing at least one of the one or more charge injection layers. The invention further relates to an apparatus for manufacturing a stacked OLED and to a stacked OLED device.

Multi-color light emitting diode and method for making same

A color light-emitting diode using a blue light component to produce red light and green light is disclosed. A blue-light emitting material is provided between a cathode layer and an anode layer for emitting the blue light component. A light re-emitting layer has a first material in a first diode section arranged to produce a red light component in response to the blue light component, and a second material in a second diode section arranged to produce a green light component in response to the blue light component. A transparent material in a third diode section allows part of the blue light component to transmit through. The anode layer is partitioned into three electrode portions separately located in the three diode sections, so that the red, green and blue light components in the diode sections can be separately controlled.

Organometallic complex, light-emitting element, light-emitting device, electronic device and lighting device

Provided is a novel substance that can emit phosphorescence. Alternatively, provided is a novel substance with high emission efficiency. An organometallic complex in which a 4-arylpyrimidine derivative is a ligand and iridium is a central metal is provided. Specifically, an organometallic complex having a structure represented by a general formula (G1) is provided. In the general formula (G1), R1 represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, R2 represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted phenyl group, R3 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and Ar1 represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms.

High-efficiency OLED device

Organic compound, organic light emitting diode including the same, and organic light emitting display

Disclosed herein is an organic compound, an organic light emitting diode including the same, and an organic light emitting display. The organic compound according to the present disclosure is a phenanthroline compound represented by the following Formula 1, which is used as an electron transport material of an organic light emitting diode. The phenanthroline compound can increase lifespan of the organic light emitting diode while reducing driving voltage of the organic light emitting diode.

Array substrate, method for producing the same and display apparatus

Embodiments of the present disclosure provide an array substrate, a method for producing the same and a display apparatus. The array substrate includes a base substrate; and first to fourth light emitting units provided on the base substrate and arranged periodically thereon. Each light emitting unit of the first to fourth light emitting units includes a first electrode, a second electrode and an organic material function layer, and the organic material function layer comprises a light emitting portion. The light emitting portion includes a first light emitting layer within the second and third light emitting units, a second light emitting layer within the first and second light emitting units, and a third light emitting layer within the third and fourth light emitting units. The first light emitting layer is configured to emit light within at least one of the second and third light emitting units.

Light emitting device including tandem structure with quantum dots and nanoparticles

A light emitting device comprising: a pair of electrodes; two or more light emitting elements disposed between the electrodes in a stacked arrangement, wherein a light emitting element comprises a layer comprising an emissive material, and a charge generation element disposed between adjacent light emitting elements in the stacked arrangement, the charge generation element comprising a first layer comprising an inorganic n-type semiconductor material, and a second layer comprising a hole injection material. A charge generation is also disclosed.

Light emitting device, display device, and electronic device

Provided is a light emitting device configured to suppress deterioration in a balance of white light emission and increase a service life. The light emitting device includes a red light emitting layer, a blue light emitting layer, a green light emitting layer, a first intermediate layer configured to adjust a transfer of holes and electrons between the red light emitting layer and the blue light emitting layer, and a second intermediate layer configured to adjust the transfer of holes and electrons between the blue light emitting layer and the green light emitting layer. The intermediate layers and the blue light emitting layer each contain an assist dopant material, a concentration of the assist dopant material in the intermediate layers being greater than a concentration of the assist dopant material in the blue light emitting layer.

QUANTUM DOT LED AND OLED INTEGRATION FOR HIGH EFFICIENCY DISPLAYS

Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.

WHITE ORGANIC LIGHT EMITTING DIODE DEVICE

Provided is a white organic light emitting diode device, including first and second electrodes facing each other above a substrate, first and second charge generation layers formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the first charge generation layer and including a first light emitting layer, a second stack disposed between the first charge generation layer and the second charge generation layer and including a second light emitting layer, and a third stack disposed between the second charge generation layer and the second electrode and including a third light emitting layer, wherein two of the first to third light emitting layers emit a blue light and the rest light emitting layer emits a yellow-green light.

Top-emitting white organic light-emitting diodes having improved efficiency and stability

The present disclosure relates to an emissive construct, which can be used in various OLED applications, for example, top-emission white organic light-emitting diodes. The emissive construct can include an optional second fluorescent emissive layer having an emitter with a second T1, a first fluorescent emissive layer having an emitter with a first T1, the first T1 being greater than the second T1 value, a hole-blocking layer, and a phosphorescent emissive layer.

METHOD OF MANUFACTURING ORGANIC EL DISPLAY PANEL, ORGANIC EL DISPLAY PANEL, AND ORGANIC EL DISPLAY DEVICE

In a method for manufacturing an organic EL display panel including: preparing a substrate; forming pixel electrodes in a matrix of rows and columns; forming banks extending in a column direction at least between the pixel electrodes in a row direction; forming a first light emitting layer by applying an ink including a light emitting material in a first gap selected from a plurality of gaps between the banks; forming a second light emitting layer by a vapor deposition method to be continuous above both the first light emitting layer and the pixel electrodes in a second gap adjacent in the row direction to the first gap; and forming a counter electrode above the second light emitting layer, a height of portions of the banks adjacent to the second gap is made to be greater than a height of portions of the banks adjacent to the first gap.

Organic electroluminescent element and method for manufacturing the same

The present invention provides a multi-photon-type organic electroluminescent element including a charge generation layer using a material that is difficult to be degraded even at around normal atmospheric pressure. In an organic electroluminescent element (10) including a pair of electrodes consisting of an anode (32) and a cathode (34), a plurality of light-emitting layers (50) provided between the electrodes, and a charge generation layer (70) provided between the light-emitting layers adjacent to each other, the charge generation layer contains an ionic polymer generating at least any one of an electron and a hole.

Organic electroluminescence device

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device is disclosed. The organic light emitting display device includes a first light emitting part between an anode and a cathode, the first light emitting part having a first light emitting layer, and a second light emitting part between the first light emitting part and the cathode, the second light emitting part having a second light emitting layer and a third light emitting layer, wherein the second light emitting layer includes a hole-type host and a first electron-type host, and the third light emitting layer includes a first electron-type host and a second electron-type host.

Light-emitting device and lighting device

A light-emitting device and a lighting device each including a light-emitting element which can recover from a short circuit between a pair of electrodes by itself without adversely affecting the characteristics of the element is provided. An oxide layer is provided so as to be in contact with an electrode of the light-emitting element, whereby, due to heat generated when a short circuit is caused between a pair of electrodes, oxygen in the oxide layer and an electrode material in a short-circuited part are reacted with each other and the electrode material in the short-circuited part can be an insulator. Further, by providing an oxide layer in contact with an electron-injection layer containing an alkaline earth metal, an oxide of the alkaline earth metal can be formed, whereby moisture that enters the insulator formed by an insulation phenomenon in the short-circuited part can be adsorbed and removed.

DISPLAY DEVICE

A display device that can reduce power consumption is provided. The display device can include a substrate provided with a first subpixel and a second subpixel, a first electrode provided on the substrate, a first light emitting layer provided on the first electrode and emitting light of a first color, a second electrode provided on the first light emitting layer, a second light emitting layer provided on the second electrode and emitting light of a second color, and a third electrode provided on the second light emitting layer. The second electrode is disconnected between the first subpixel and the second subpixel, and the second electrode of the first subpixel is electrically connected with the third electrode.

Array Substrate and Manufacturing Method Thereof, and Display Device

An array substrate and a manufacturing method thereof, and a display device are provided. The array substrate includes: a first electrode, a second electrode and a light-emitting functional layer located between the first electrode and the second electrode. The light-emitting functional layer at least includes an organic light-emitting material layer of a first color and an organic light-emitting material layer of a second color, a color decay rate of the organic light-emitting material layer of the first color being greater than a color decay rate of the organic light-emitting material layer of the second color. The organic light-emitting material layer of the first color at least includes a first sub-layer and a second sub-layer arranged in a stacking manner, and a third electrode is disposed between the first sub-layer and the second sub-layer.

TANDEM WHITE ORGANIC LIGHT-EMITTING DEVICE

The present invention relates to a tandem white organic light-emitting device and, more specifically, to a tandem white organic light-emitting device having excellent electrical properties due to the enhanced conductivity of charge generation layers formed between a plurality of organic light-emitting layers that are being laminated. To this end, the present invention provides a tandem white organic light-emitting device comprising: a base substrate; a first electrode formed on the base substrate; a second electrode formed opposite to the first electrode; two or more organic light-emitting layers formed between the first and second electrodes; and charge generation layers formed between the adjacent organic light-emitting layers, wherein the charge generation layers are formed from a laminated structure of a first metal layer and a second metal layer having different work functions.

Organic electroluminescent element

The present invention relates to the improvement of organic electroluminescent devices which consist of a certain matrix material which has been doped with at least one phosphorescent emitter, and which are characterized in that the doping zone of the emitter in the matrix at right angles to the layer extends only over a part of the matrix layer.

Light-emitting device, electronic device, and lighting device

A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits ...

Organic el devices

Organic EL devices having a light-emitting layer comprising a fluorescent dopant, a light-emitting layer comprising a phosphorescent dopant, and a non-light-emitting interface layer provided between an anode and a cathode wherein the light-emitting layer comprising a fluorescent dopant is provided nearer to the cathode than the light-emitting layer comprising a phosphorescent dopant and wherein the non-light-emitting interface layer is provided between the light-emitting layer comprising a fluorescent dopant and the light-emitting layer comprising a phosphorescent dopant.

ORGANIC ELECTROLUMINESCENT ELEMENT AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a multi-photon organic electroluminescent element including a charge generation layer formed with a material hardly causing deterioration even in an atmosphere at around ordinary pressure. SOLUTION: An organic electroluminescent element 10 includes: a pair of electrodes comprising an anode 32 and a cathode 34; a plurality of luminous layers 50 provided between the electrodes; and a charge generation layer 70 provided between adjacent luminous layers. In the organic electroluminescent element, the charge generation layer includes an ionic polymer generating at least one of electrons and positive holes. COPYRIGHT: (C)2012,JPO&INPIT ...

エレクトロルミネッセンス装置

ОРГАНИЧЕСКОЕ ЭЛЕКТРОЛЮМИНИСЦЕНТНОЕ УСТРОЙСТВО

Изобретение относится к области органических электронных устройств (1) с диффузионными барьерами и к способу изготовления таких органических электронных устройств (1). Технический результат - повышение стабильности рабочих характеристик. Органическое электронное устройство (1) с подложкой (2) снабжено первым электродом (3), расположенным поверх подложки (2), и функциональным слоистым пакетом (ФСП), расположенным поверх первого электрода, содержащим два или более органических слоя (41, 42, 43), и вторым электродом (5). Органическое электронное устройство (1) дополнительно содержит прозрачный и электропроводный графеновый слой (6), расположенный в контакте с по меньшей мере одним из органических слоев (41, 42, 43) и действующий как диффузионный барьер против атомов, ионов или молекул в этом органическом слое (41, 42, 43). 2 н. и 10 з.п. ф-лы, 7 ил.

УСТРОЙСТВО ОСВЕЩЕНИЯ

Изобретение относится к устройству освещения, размещенному в фюзеляже самолета, и касается органических электролюминесцентных (ЭЛ) устройств освещения. Устройство содержит органическую ЭЛ панель и схему возбуждения панели. Причем органическая ЭЛ панель включает в себя множество светоизлучающих блоков, слой генерации заряда, пару электродов, прозрачную подложку, уплотнительную подложку, уплотнительный элемент, светонакопительный слой, теплоизлучающую пластину. При этом между уплотнительной подложкой и отрицательным электродом обеспечен зазор, который заполнен заполнителем (влагопоглотитель, инертный газ или силиконовое масло). Парой электродов являются оба прозрачных электрода. Светонакопительный слой размещен между отрицательным электродом и теплоизлучающей пластиной. Достигается уменьшение размеров и веса конструкции. 2 н. и 8 з.п. ф-лы, 30 ил.

Licht emittierendes Element, Anzeigevorrichtung, elektronisches Gerät und Beleuchtungsvorrichtung

Ein zuverlässiges Licht emittierendes Element mit niedriger Betriebsspannung wird bereitgestellt. Das Licht emittierende Element beinhaltet eine Elektroneninjektionsschicht zwischen einer Kathode und einer Licht emittierenden Schicht. Die Elektroneninjektionsschicht ist ein Mischfilm aus einem Übergangsmetall und einer organischen Verbindung mit einem ungeteilten Elektronenpaar. Ein Atom des Übergangsmetalls und der organischen Verbindung bilden SOMO.

LICHTEMISSIONSELEMENTEINHEIT

Diese Lichtemissionselementeinheit ist aus drei Lichtemissionselementen konfiguriert. In einem ersten Lichtemissionselement 10a sind eine 1a-te Elektrode 21a, eine erste organische Schicht 23a, die eine erste Lichtemissionsschicht umfasst, eine 2a-te Elektrode 22a, eine zweite organische Schicht 23b, die eine zweite Lichtemissionsschicht umfasst, und eine dritte organische Schicht 23c, die eine dritte Lichtemissionsschicht umfasst, gestapelt. In einem zweiten Lichtemissionselement 10b sind die erste organische Schicht 23a, eine 1b-te Elektrode 21b, die zweite organische Schicht 23b, eine 2b-te Elektrode 22b und die dritte organische Schicht 23c gestapelt. In einem dritten Lichtemissionselement 10c sind die erste organische Schicht 23a, die zweite organische Schicht 23b, eine 1c-te Elektrode 21c, die dritte organische Schicht 23c und eine 2c-te Elektrode 22c gestapelt.

Organisches elektrolumineszierendes Element

Drei Licht-emittierende Einheiten (4) sind enthalten. Zwei Licht-emittierende Einheiten (4) der drei Licht-emittierenden Einheiten (4) sind ähnliches farbiges Licht emittierende Einheiten (4S), die Licht in einer ähnlichen Farbe emittieren, und zueinander verschiedene Luminanz-Lebensdauern aufweisen. Eine verbleibende Licht-emittierende Einheit (4) der drei Licht-emittierenden Einheiten (4) ist eine Licht mit anderer Farbe emittierende Einheit (4D), die Licht in einer Farbe, die von der ähnlichen Farbe verschieden ist, emittiert und eine Luminanz-Lebensdauer, die kürzer als jede Luminanz-Lebensdauer der zwei ähnliches farbiges Licht emittierenden Einheiten (4S) ist, aufweist.

An organic light emitting display device

The device comprises an intermediate layer 226a between an emissive layer 226c and a transport layer 224b where the intermediate layer comprises a mixture of the transport layer material and a host material of the emissive layer. Intermediate layers are provided between the hole transport layer and the emissive layer and also between the electron transport layer and the emissive layer. The mixed layers may also comprise a phosphorescent dopant for yellow/green light emission. The intermediate layers reduce the interface resistance between an emitting layer and the transport layers that improves the device lifespan. The OLED device may be used in a white emitting stacked OLED device comprising a lower blue emitting device and an upper yellow/green emitting device with a charge generating layer 222 separating the upper and lower OLEDs (see figure 3).

ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME

Organic electroluminescent element, illumination device, and food storage device

The objective of the present invention is to provide an organic electroluminescent element suitable for both food illumination and indoor illumination at room temperature. The light emission spectrum of the organic electroluminescent element has a peak in the red region, the green region, and the blue region. Of the ratio of the largest value to the smallest value of the peak strength in the red region of the light emission spectrum at an element temperature in a range from 5 DEG C to 60 DEG C, the ratio of the largest value to the smallest value of the peak strength in the green region of the light emission spectrum at an element temperature in a range from 5 DEG C to 60 DEG C, and the ratio of the largest value to the smallest value of the peak strength in the blue region of the light emission spectrum at an element temperature in a range from 5 DEG C to 60 DEG C, the ratio of the largest value to the smallest value of the peak strength in the green region is the largest, and the peak ...

Light emitting display device

Organic electroluminescent device and preparation method thereof

The present invention relates to a method capable of considerably improving the characteristics of an organic electroluminescent device. The present invention provides a method capable of reducing operating voltage and improving efficiency by inserting an inorganic oxide interlayer configured of at least one layer between light-emitting layers.

Organic compound, and organic light emitting diode and organic light emitting display device including the same

A display panel and a manufacturing method thereof

ORGANIC ELECTROLUMINESCENCE DEVICE

Organic light emitting diode display

Material for organic electroluminescent element and organic electroluminescent element using same

Provided is a compound represented by formula (1).

ORGANIC EL PANEL, DISPLAY DEVICE USING SAME, AND METHOD FOR PRODUCING ORGANIC EL PANEL

To increase light-extraction efficiency and simplify manufacturing process. An organic EL panel includes: first electrode reflecting incident light; second electrode transmitting incident light therethrough; organic light-emitting layer emitting light of corresponding color among R, G, and B colors; first functional layer including charge injection/transport layer and at least one other layer, and disposed between the first electrode and the light-emitting layer; and second functional layer disposed between the second electrode and the light-emitting layer. The charge injection/transport layers of R, G, and B colors differ in film thickness, the at least one other layers of R, G, and B colors are equal in film thickness to one another, the second functional layers of R, G, and B colors are equal in film thickness to one another, and the light-emitting layers of R and G colors are equal in film thickness, and differ in film thickness from the light-emitting layer of B color. 117-. (canceled)18. An organic EL panel comprising:a first electrode of each of R (red), G (green), and B (blue) colors that reflects incident light;a second electrode that faces the first electrode of each of the R, G, and B colors, and transmits incident light therethrough;an organic light-emitting layer of each of the R, G, and B colors that is disposed between the first electrode of a corresponding color and the second electrode, and emits light of a corresponding color due to voltage application between the first electrode of the corresponding color and the second electrode;a first functional layer of each of the R, G, and B colors that includes a charge injection/transport layer and at least one other layer, and is disposed between the first electrode of a corresponding color and the organic light-emitting layer of a corresponding color;a second functional layer of each of the R, G, and B colors that is disposed between the second electrode and the organic light-emitting layer of a ...

DISPLAY DEVICE AND METHOD OF PROVIDING THE SAME

A display device includes a substrate, a pixel defining layer defining a first opening, a light emitting element including a first electrode exposed to outside the pixel defining layer by the first opening and a light emitting layer in the first opening and facing the first electrode, and a spacer spaced apart from the pixel defining layer along the substrate. The pixel defining layer and the spacer each includes a top surface which is furthest from the substrate and a height of the top surface from the substrate, and the height of the top surface of the spacer is greater than the height of the top surface of the pixel defining layer. 1. A display device comprising:a substrate;a pixel defining layer defining a first opening; a first electrode exposed to outside the pixel defining layer by the first opening; and', 'a light emitting layer in the first opening and facing the first electrode; and, 'a light emitting element comprisinga spacer spaced apart from the pixel defining layer along the substrate,whereinthe pixel defining layer and the spacer each includes a top surface which is furthest from the substrate and a height of the top surface from the substrate, andthe height of the top surface of the spacer is greater than the height of the top surface of the pixel defining layer.2. The display device of claim 1 , wherein the light emitting element further comprises a second electrode covering the top surface of the pixel defining layer claim 1 , the light emitting layer and the top surface of the spacer.3. The display device of claim 2 , whereinthe spacer further includes a side surface extended from the top surface of the spacer and toward the substrate, andthe second electrode extends from the top surface of the spacer and along the side surface of the spacer to cover the side surface of the spacer.4. The display device of claim 2 , whereinthe pixel defining layer further defines a second opening spaced apart from the first opening and the first electrode, andthe ...

ORGANIC LIGHT-EMITTING DEVICE

An organic light-emitting device comprises a first electrode, a second electrode disposed on the first electrode, a first organic light-emitting layer disposed between the first electrode and the second electrode, a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode, a first charge generation layer(CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer, a second CGL disposed between the first CGL and the second organic light-emitting layer, and a first buffer layer disposed between the first CGL and the second CGL and including fullerene. 1. An organic light-emitting device , comprising:a first electrode;a second electrode disposed over the first electrode;a first organic light-emitting layer disposed between the first electrode and the second electrode;a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode;a first charge generation layer (CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer;a second CGL disposed between the first CGL and the second organic light-emitting layer; anda first buffer layer disposed between the first CGL and the second CGL, the first buffer layer comprising a fullerene compound.2. The organic light-emitting device of claim 1 , wherein the first CGL is an n-type CGL and the second CGL is a p-type CGL claim 1 , wherein the first buffer layer is configured to inhibit n-type dopant in the n-type CGL from diffusing into the second CGL.3. The organic light-emitting device of claim 1 , wherein the fullerene compound comprises at least one selected from the group consisting of C60 claim 1 , C70 claim 1 , C76 claim 1 , C78 claim 1 , and C84.4. The organic light-emitting device of claim 1 , wherein the first organic light-emitting layer is further configured to emit light of a first wavelength and the second organic ...

Organic compound, and organic light emitting diode and organic light emitting display device including the same

An embodiment of the present invention provides an organic compound represented by following Formula: wherein each of X 1 to X 5 is independently selected from a carbon atom (C) or a nitrogen atom (N), and at least two or three of X 1 to X 5 are N, wherein each of R 1 and R 2 is independently selected from a substituted or non-substituted aryl group or a substituted or non-substituted heteroaryl group, and “a” is an integer between zero (0) to 3, and wherein each of L 1 and L 2 is independently selected from a substituted or non-substituted arylene group or a substituted or non-substituted heteroarylene group, and “b” is zero (0) or 1. The present invention also provides an organic light emitting diode and an organic light emitting display device including the organic compound. The organic compound of the present invention is capable of reducing a driving voltage of an organic light emitting diode and improves a current efficiency and a lifetime of the organic light emitting diode and the organic light emitting display device including the same.

ORGANIC ELECTROLUMINESCENT DISPLAY PANEL, MANUFACTURING METHOD THEREOF, AND DISPLAY DEVICE

The present disclosure relates to an organic electroluminescent display panel, a method of manufacturing the same, and a display device that can alleviate or avoid the occurrence of pixel crosstalk problems due to lateral conduction of the charge generation layer. An organic electroluminescent display panel is provided which comprises: a substrate; an anode layer and a pixel defining layer over the substrate, the pixel defining layer defining pixel units, wherein a recess is provided in the pixel defining layer between adjacent pixel units; a stack of organic electroluminescent units over the anode layer and the pixel defining layer, the stack comprising at least two organic electroluminescent units and a charge generation layer disposed between organic electroluminescent units which are adjacent to each other; a cathode layer over the stack, wherein the corresponding charge generation layers of the adjacent pixel units are disconnected at the recesses, and wherein the cathode layer is continuous at the recess. 1. An organic electroluminescent display panel comprising:a substrate;an anode layer and a pixel defining layer over the substrate, the pixel defining layer defining pixel units, wherein a recess is provided in the pixel defining layer between adjacent pixel units;a stack of organic electroluminescent units over the anode layer and the pixel defining layer, the stack comprising at least two organic electroluminescent units and a charge generation layer disposed between organic electroluminescent units which are adjacent to each other; anda cathode layer over the stack;wherein corresponding charge generation layers of the adjacent pixel units are disconnected at the recesses, andwherein the cathode layer is continuous at the recess.2. The organic electroluminescent display panel according to claim 1 , wherein the recess between adjacent pixel units are shared by the adjacent pixel units.3. The organic electroluminescent display panel according to claim 1 , ...

Panel, Display Device, and Vehicle-Mounted Display Device

Disclosed are a panel capable of performing transparent display, a display device and a vehicle-mounted display device. A transmission part includes an organic light-emitting diode so as to perform light emission as well as display, thereby increasing an emission area, reducing the driving voltage required for emission driving, and consequently increasing the lifespan of the display device.

ORGANIC LIGHT-EMITTING DEVICE

An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer and an intermediate layer disposed between the first electrode and the emission layer, wherein the intermediate layer directly contacts the emission layer, and wherein the intermediate layer includes a first hole transport material, wherein the emission layer includes a host and a dopant, wherein the dopant is an organometallic compound, provided that the dopant does not comprise iridium, and wherein the organic light-emitting device satisfies certain parameters described in the specification. 1. An organic light-emitting device comprising:a first electrode;a second electrode facing the first electrode; andan organic layer disposed between the first electrode and the second electrode,whereinthe organic layer comprises an emission layer, and an intermediate layer disposed between the first electrode and the emission layer,the intermediate layer directly contacts the emission layer and comprises a first hole transport material,the emission layer comprises a host and a dopant,the dopant is an organometallic compound, provided that the dopant does not comprise iridium, andthe organic light-emitting device satisfies a condition of HOMO(h1)−HOMO(host)<0 electron volts,wherein HOMO(h1) indicates the highest occupied molecular orbital (HOMO) energy level (expressed in electron volts) of the first hole transport material,i) when the host consists of a single host, the HOMO(host) indicates a HOMO energy level (expressed in electron volts) of the single host and ii) when the host is a mixture of two or more different hosts, the HOMO(host) indicates the highest energy level among HOMO energy levels (expressed in electron volts) of the two or more different hosts, andHOMO(h1) and HOMO(host) are measured by using a photoelectron ...

WHITE LIGHT ORGANIC LIGHT-EMITTING DIODE (OLED) AND THE DISPLAY PANEL THEREOF

The present disclosure relates to a white light OLED and a display panel. The OLED includes a first electrode, a first hole injection layer, a first hole transport layer, a first luminous layer, a first electron transport layer, a charge generation layer, a second hole injection layer, a second hole transport layer, an electron blocking layer, a second luminous layer, a third luminous layer, a second electron transport layer, and a second electrode stacked in sequence. The first luminous layer is a blue luminous layer, the second luminous layer is a blue luminous layer, and the third luminous layer is a yellow luminous layer. With such configuration, the color shift and the power consumption issue caused by insufficient blue light may be effectively overcome. 1. A white light organic light-emitting diode (OLED) , comprising: wherein the first luminous layer being a blue luminous layer, the second luminous layer being a blue luminous layer, and the third luminous layer being a yellow luminous layer;', 'the second luminous layer being configured on one side of the third luminous layer facing away the second electrode;', 'the first hole injection layer, the first hole transport layer, the first luminous layer, the first electron transport layer, the first charge generation layer, the second hole injection layer, the second hole transport layer, the electron blocking layer, the second luminous layer, the third luminous layer, and the second electron transport layer, and the second electrode being formed by a vapor deposition in sequence., 'a first electrode, a first hole injection layer, a first hole transport layer, a first luminous layer, a first electron transport layer, a charge generation layer, a second hole injection layer, a second hole transport layer, an electron blocking layer, a second luminous layer, a third luminous layer, a second electron transport layer, and a second electrode stacked in sequence;'}2. The OLED as claimed in claim 1 , wherein:a thickness ...

Organic Light-Emitting Diode and Display Device Comprising the Same

An organic light-emitting diode includes a first electrode, a first light-emitting unit (EL unit) disposed on the first electrode and including a first organic light-emitting layer, a first charge generating layer on the first EL unit, a second EL unit disposed on the first charge generating layer and including a second organic light-emitting layer, a third organic light-emitting layer and a fourth organic light-emitting layer, a second charge generating layer on the second EL unit, a third EL unit disposed on the second charge generating layer and including a fifth organic light-emitting layer, and a second electrode on the third EL unit. A dopant concentration of the third organic light-emitting layer is greater than a dopant concentration of the fourth organic light-emitting layer. An organic light emitting display device can include the organic light-emitting diode. 1. An organic light-emitting diode comprising:a first electrode;a first light-emitting unit disposed on the first electrode and comprising a first organic light-emitting layer;a first charge generating layer disposed on the first light-emitting unit;a second light-emitting unit disposed on the first charge generating layer and comprising a second organic light-emitting layer, a third organic light-emitting layer, and a fourth organic light-emitting layer;a second charge generating layer disposed on the second light-emitting unit;a third light-emitting unit disposed on the second charge generating layer and comprising a fifth organic light-emitting layer; anda second electrode disposed on the third light-emitting unit,wherein a dopant concentration of the third organic light-emitting layer is greater than a dopant concentration of the fourth organic light-emitting layer.2. The organic light-emitting diode of claim 1 , wherein the first organic light-emitting layer and the fifth organic light-emitting layer are blue light-emitting layers claim 1 ,wherein the second organic light-emitting layer is a red ...

COLOR STABLE ORGANIC LIGHT EMITTING DIODE STACK

The present invention relates to OLED devices and stacks for OLED devices that include a symmetric emissive-layer architecture. In one embodiment, the present invention relates to an emissive stack having three layers, wherein the top and bottom layers emit light in the same or similar color region while the middle layer emits light in a different color region than the other two layers. In such an embodiment, the three layers are in contact with each other with no other layers in between. The symmetric emissive-layer architecture of the present invention can be used to improve the color stability of OLED devices. 1. An organic light emitting device , comprising:a first electrode;a first emissive layer disposed over the first electrode and comprising a first fluorescent blue emissive material;a first charge generation layer disposed over the first emissive layer;a second emissive layer disposed over the first charge generation layer and comprising a first red emissive material;a third emissive layer disposed over the second emissive layer and comprising a first green emissive material;a fourth emissive layer disposed over the third emissive layer and comprising a second red emissive material;a second charge generation layer disposed over the fourth emissive layer; anda fifth emissive layer disposed over the second charge generation layer and comprising a second fluorescent blue emissive material.2. The device of claim 1 , wherein the second red emissive material is the same material as the first red emissive material.3. The device of claim 1 , wherein the second red emissive material comprises a different material than the first red emissive material.4. The device of claim 1 , wherein the first red emissive material and/or the second red emissive material is a phosphorescent emissive material.5. The device of claim 1 , wherein the second fluorescent blue emissive material comprises a same material as the first fluorescent blue emissive material.6. The device of claim ...

Array Substrate, Method for Producing the Same and Display Apparatus

Embodiments of the present disclosure provide an array substrate, a method for producing the same and a display apparatus. The array substrate includes a base substrate; and first to fourth light emitting units provided on the base substrate and arranged periodically thereon. Each light emitting unit of the first to fourth light emitting units includes a first electrode, a second electrode and an organic material function layer, and the organic material function layer comprises a light emitting portion. The light emitting portion includes a first light emitting layer within the second and third light emitting units, a second light emitting layer within the first and second light emitting units, and a third light emitting layer within the third and fourth light emitting units. The first light emitting layer is configured to emit light within at least one of the second and third light emitting units.

WOLED DISPLAY PANEL AND DISPLAY DEVICE

The present disclosure discloses a white organic light emitting diode (WOLED) display panel, which comprises a thin film transistor (TFT) array substrate and a color filter layer and a light emitting structure layer sequentially disposed on the TFT array substrate, wherein the light emitting structure layer comprises an anode layer, a pixel defining layer, a white organic light emitting layer and a cathode layer that are sequentially disposed, wherein the pixel defining layer comprises pixel opening portions and pixel spacing portions for spacing adjacent two of the pixel opening portions, and wherein a protruding insulating post spacer is disposed on each of the pixel spacing portions, and a protruding bend portion is formed in a part of the white organic light emitting layer corresponding to and covering the post spacer. The present disclosure also discloses a display device comprising the WOLED display panel as above. 1. A white organic light emitting diode (WOLED) display panel , comprising:a thin film transistor (TFT) array substrate; anda color filter layer and a light emitting structure layer sequentially disposed on the TFT array substrate,wherein the light emitting structure layer comprises an anode layer, a pixel defining layer, a white organic light emitting layer and a cathode layer that are sequentially disposed,wherein the pixel defining layer comprises pixel opening portions and pixel spacing portions for spacing adjacent two of the pixel opening portions, andwherein a protruding insulating post spacer is disposed on each of the pixel spacing portions, and a protruding bend portion is formed in a part of the white organic light emitting layer corresponding to and covering the post spacer.2. The WOLED display panel of claim 1 , wherein the post spacer has a trapezoid-shaped cross-section claim 1 , and has an angle not less than 60° between a side surface and a bottom surface of the post spacer.3. The WOLED display panel of claim 1 , wherein the post ...

Light-emitting device, display device, and electronic device

A light-emitting device, an electronic device, and a display device each consume less power are provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element that share an EL layer. The EL layer includes a layer containing a light-emitting material that emits blue fluorescence and a layer containing a light-emitting material that emits yellow or green phosphorescence. Light emitted from the second light-emitting element enters a color filter layer or a second color conversion layer, and light emitted from the third light-emitting element enters a first color conversion layer.

ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND ILLUMINATION DEVICE

An organic EL element () has two first light emitting units (A) which each include a first light emitting layer (A) having one or two peak wavelengths in a wavelength region of 440 nm to 490 nm. The first light emitting units (A) are respectively disposed at positions adjacent to inner sides of a first electrode () and a second electrode (), and a substrate is disposed on outer sides of the first electrode () and the second electrode (). White light obtained by light emission of the plurality of light emitting units has a continuous emission spectrum over at least a wavelength region of 380 nm to 780 nm and, in terms of light distribution characteristics of light emitted to the outside of a substrate (), a luminance of the white light obtained through the substrate () has a substantially constant value in an angle range of 0 degrees to 30 degrees from an axis perpendicular to a surface direction of the substrate (). 1. An organic electroluminescent element that has a structure in which a plurality of light emitting units having a light emitting layer made of at least an organic compound are stacked so that charge generation layers are interposed therebetween , between a first electrode and a second electrode , the element comprising:two first light emitting units that each include a first light emitting layer having one or two peak wavelengths in a wavelength region of 440 nm to 490 nm; anda second light emitting unit that includes a second light emitting layer having one or two peak wavelengths in a wavelength region of 500 nm to 640 nm,wherein the first light emitting units are respectively disposed at positions adjacent to inner sides of the first electrode and the second electrode,wherein a substrate is disposed on outer sides of the first electrode and the second electrode,wherein white light obtained by light emission of the plurality of light emitting units has a continuous emission spectrum over at least a wavelength region of 380 nm to 780 nm, and,wherein, ...

ORGANIC WHITE LIGHT EMITTING ELEMENT

Provided is an organic white light emitting element (EL) including: a reflective electrode, a light extraction electrode, and an organic layer arranged therebetween, the organic layer including: a blue light emitting layer (BL); and a long-wavelength light emitting layer, the long-wavelength light emitting layer arranged between the BL and the reflective electrode, the BL provided at such a position as to satisfy Equation given below: 1. An organic white light emitting element comprising:a reflective electrode, an organic layer, and a light extraction electrode, which are formed in the stated order, a blue light emitting layer including a light emitting molecule that emits blue light; and', 'a long-wavelength light emitting layer including a light emitting molecule that emits red light and a light emitting molecule that emits green light,', 'wherein the long-wavelength light emitting layer is arranged between the blue light emitting layer and the reflective electrode,', {'br': None, 'i': 'z=φ×λ', 'sub': '1', '/4π\u2003\u2003(1)'}, 'wherein the blue light emitting layer is provided at such a position as to satisfy Equation (1) given below], 'wherein the organic layer includeswherez represents an optical distance between the reflective electrode and an interface of the blue light emitting layer on the reflective electrode side, φ represents a phase of light reflected by the reflective electrode in an emission wavelength region of the blue light emitting layer, and{'sub': '1', 'λrepresents a wavelength in a visible light region, and'}wherein the organic white light emitting element has a resonator structure defined between the reflective electrode and the light extraction electrode and has a maximum peak resonant wavelength in a blue light wavelength region.2. The organic white light emitting element according to claim 1 , wherein the organic white light emitting element satisfies Equation (2) given below:{'br': None, 'i': L', 'm, 'sub': '2', '=(Σφ+2π)×λ/4π\u2003\u2003 ...

ORGANIC LIGHT EMITTING DIODE DISPLAY

An organic light emitting diode display is provided that may include a first substrate, a plurality of electrodes on the first substrate and spaced apart from each other, a pixel defining layer on the plurality of electrodes, spacers on the pixel defining layer, and a second substrate on the spacers. The pixel defining layer includes a plurality of openings spaced apart from each other and respectively open to the plurality of electrodes. The spacers on the pixel defining layer are at crossing points of a plurality of virtual lines, the spacers crossing spaces between adjacent openings of the plurality of openings. 1. An organic light emitting diode display , comprising:a substrate;a first electrode on the substrate;a second electrode adjacent to the first electrode;a third electrode adjacent to the first electrode and second electrode; a first opening overlapping the first electrode;', 'a second opening overlapping the second electrode; and', 'a third opening overlapping the third electrode, wherein the first and second openings have a first space therebetween so as to be spaced apart from each other in a first direction, and wherein the third opening is larger than the first opening and larger than the second opening;, 'a pixel defining layer on the first electrode, the second electrode, and the third electrode, the pixel defining layer comprising a first part disposed in the first space between the first opening and the second opening;', 'a second part disposed in a second space between the first opening and the third opening; and', 'a third part disposed in a third space between the second opening and the third opening;, 'a spacer on the pixel defining layer, the spacer comprisinga first line crossing the first space; anda second line crossing the second space and the third space,wherein the spacer comprises a center point overlapping a crossing point of the first line and the second line.2. The organic light emitting diode display of claim 1 , wherein the first ...

Display device, manufacturing method of display device, and electronic instrument

Pixels each including a light emitting unit formed by laminating a first electrode, an organic layer, and a second electrode are arranged in a two-dimensional matrix. The organic layer includes multiple light emitting layers of different types and a light emission separation layer. Each of the multiple light emitting layers of different types is laminated as a common layer extending continuously over the pixels. The light emission separation layer is arranged between two adjacent light emitting layers, and is formed so as to have a different configuration depending on a display color of the pixel.

LIGHT EMITTING DIODE, METHOD OF MANUFACTURING THE SAME, AND LIGHT EMITTING DEVICE

The present disclosure provides a light-emitting diode, including a first electrode, a light-emitting functional layer and a second electrode which are stacked, the first electrode is a transparent electrode, the second electrode includes a metal electrode layer and a semiconductor auxiliary layer, the metal electrode layer is attached to the light-emitting functional layer, the semiconductor auxiliary layer is located on a surface of the metal electrode layer away from the light-emitting functional layer. The metal electrode layer is made of a magnesium-silver alloy, a thickness of the metal electrode layer is between 3 nm and 5 nm, and the semiconductor auxiliary layer is made of IZO, a thickness of the semiconductor auxiliary layer is between 100 nm and 130 nm. The present disclosure further provides a light emitting device and a method of manufacturing a light emitting diode. The light-emitting diode has high color rendering index and low power consumption. 1. A light emitting diode , comprising a first electrode , a light-emitting functional layer and a second electrode which are laminated , the first electrode is a transparent electrode , whereinthe second electrode comprises a metal electrode layer and a semiconductor auxiliary layer, the metal electrode layer is attached to the light-emitting functional layer, the semiconductor auxiliary layer is located on a surface, away from the light-emitting functional layer, of the metal electrode layer,the metal electrode layer is made of a magnesium-silver alloy, a thickness of the metal electrode layer is between 3 nm and 5 nm,the semiconductor auxiliary layer is made of indium zinc oxide, and a thickness of the semiconductor auxiliary layer is between 100 nm and 130 nm.2. The light-emitting diode of claim 1 , wherein in the magnesium silver alloy claim 1 , a mass percentage of magnesium is between 70% and 90%.3. The light emitting diode of claim 1 , wherein the second electrode has a light transmittance ranging ...

DISPLAY PANEL, METHOD OF MANUFACTURING THE SAME, AND DISPLAY DEVICE HAVING THE SAME

A display panel includes an auxiliary electrode on a base substrate, a first electrode spaced from the auxiliary electrode, a first light emitting unit on the auxiliary electrode and the first electrode, an conductive thin film layer on the first light emitting unit, a second light emitting unit on the conductive thin film layer, a first contact hole through the conductive thin film layer to expose the auxiliary electrode, a insulating layer in the first contact hole, and a second electrode including a first electrode part and a second electrode part, the first electrode part being on the insulating layer in the first contact hole, and the second electrode part overlapping the first electrode and being on the second light emitting unit, wherein the insulating layer is between the first electrode part and the conductive thin film layer. 1. A display panel , comprising:a base substrate;an auxiliary electrode on the base substrate;a first electrode spaced apart from the auxiliary electrode when viewed in a plan view;a first light emitting unit on the auxiliary electrode and the first electrode;an conductive thin film layer on the first light emitting unit;a second light emitting unit on the conductive thin film layer;a first contact hole through at least the first light emitting unit, the conductive thin film layer, and the second light emitting unit to expose the auxiliary electrode;a insulating layer including a first part in the first contact hole; anda second electrode including a first electrode part and a second electrode part, the first electrode part being on the first part of the insulating layer and having at least a portion in the first contact hole, and the second electrode part overlapping the first electrode when viewed in a plan view, the second electrode part being on the second light emitting unit,wherein a first portion of the first part of the insulating layer is between the first electrode part and the conductive thin film layer to insulate the ...

Organic electroluminescence element, and material for organic electroluminescence element

The organic electroluminescence device includes an anode, a cathode, and at least an emitting layer between the anode and the cathode. The emitting layer includes a first host material, a second host material, and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below and the second host material is a compound represented by a formula (2) below.

TANDEM ORGANIC LIGHT EMITTING DEODE DEVICE AND DISPLAY DEVICE

A tandem OLED device and a display device are disclosed. The tandem OLED device includes a reflective electrode and a transmissive electrode; n organic emissive layers disposed between the reflective electrode and the transmissive electrode, wherein n is an integer equal to or greater than 2; and a connecting unit disposed between every two neighboring organic light emitting layers. A distance h between the two neighboring organic light emitting layers satisfies the following equation: (λ2−λ1)≦h≦(λ2−λ1). 1. A tandem OLED device , comprising:a reflective electrode;a transmissive electrode;n organic emissive layers disposed between the reflective electrode and the transmissive electrode, wherein n is an integer equal to or greater than 2; anda connecting unit disposed between every two neighboring organic light emitting layers, wherein the connecting unit is configured for connecting the two neighboring organic light emitting layers;wherein a distance h between the two neighboring organic light emitting layers satisfies the following equation: ⅛(λ2−λ1)≦h≦⅓(λ2−λ1), wherein an organic light emitting layer of the two neighboring organic light emitting layers which is closer to the reflective electrode is a first organic light emitting layer, λ1 is a wavelength with the maximum energy of a spectrum energy distribution curve of light emitted by the first organic light emitting layer; an organic light emitting layer of the two neighboring organic light emitting layers which is closer to the transmissive electrode is a second organic light emitting layer, λ2 is a wavelength with the maximum energy of a spectrum energy distribution curve of light emitted by the second organic light emitting layer, and λ2>λ1.2. The tandem OLED device of claim 1 , wherein the connecting unit comprises a connecting layer claim 1 , an electron transmission layer and a hole transmission layer.3. The tandem OLED device of claim 2 , wherein the connecting unit further comprises an electron injection ...

THREE STACK HYBRID WHITE OLED FOR ENHANCED EFFICIENCY AND LIFETIME

OLEDs containing a stacked hybrid architecture including a phosphorescent organic emissive unit and two fluorescent organic emissive units are disclosed. The stacked hybrid architecture includes a plurality of electrodes and a hybrid emissive stacked disposed between at least two of the electrodes. The stack contains at least three emissive units and at least two charge generation layers. At least one of the three emissive units is a phosphorescent organic emissive unit and at least two of the three emissive units are fluorescent organic emissive units. More specifically, the two fluorescent organic emissive units may be blue organic emissive units that emit light from the same or different color regions. 1. A device comprising:a first electrode;a second electrode; and a first emissive unit that comprises a first fluorescent blue organic emissive unit;', 'a first charge generation layer that is disposed over the first emissive unit;', 'a second emissive unit that comprises a second fluorescent blue organic emissive unit that is disposed over the first charge generation layer;', 'a second charge generation layer that is disposed over the second emissive unit;', 'a third emissive unit that comprises a third fluorescent blue organic emissive unit that is disposed over the second charge generation layer;', 'a third charge generation layer that is disposed over the third emissive unit; and', 'a fourth emissive unit that comprises a phosphorescent organic emissive unit that is disposed over the third charge generation layer., 'a hybrid emissive stack disposed between the first electrode and the second electrode, the stack comprising2. The device of claim 1 , wherein the first emissive unit is disposed over the first electrode claim 1 , and wherein the first electrode is an anode.3. The device of claim 1 , wherein the phosphorescent organic emissive unit of the fourth emissive unit comprises a phosphorescent green organic emitter.4. The device of claim 1 , wherein the ...

ORGANIC LIGHT EMITTING DIODE DISPLAY

Provided is an organic light emitting diode display. The OLED display includes a thin film transistor substrate, a white OLED layer, a quantum dot photoluminescence film and a color filter film. The OLED display includes sub-pixels, which are sequentially disposed. The sub-pixels include a red sub-pixel, a green sub-pixel and a blue sub-pixel. A region of the quantum dot photoluminescence film corresponding to the red sub-pixel is provided with red quantum dots, and a region corresponding to the green sub-pixel is provided with green quantum dots. The red quantum dots and the green quantum dots are excited by white light emitted by the WOLED layer to emit high-purity red light and green light, respectively, and then filtered by the color filter film to be emitted. Thus, the OLED display has higher color saturation, which effectively broadens color gamut and can fully utilize the short-wavelength light. 1. An organic light emitting diode display , comprising a thin film transistor substrate , a white organic light emitting diode layer disposed on one side of the thin film transistor substrate , a quantum dot photoluminescence film disposed on one side of the thin film transistor substrate away from the white organic light emitting diode layer or on one side of the white organic light emitting diode layer away from the thin film transistor substrate and a color filter film disposed on one side of the quantum dot photoluminescence film away from the white organic light emitting diode layer; wherein the quantum dot photoluminescence film is located on a light exit side of the white organic light emitting diode layer;wherein the organic light emitting diode display comprises a plurality of sub-pixels arranged in sequence, and the plurality of sub-pixels comprise a red sub-pixel, a green sub-pixel and a blue sub-pixel;wherein a region of the quantum dot photoluminescence film corresponding to the red sub-pixel is provided with red quantum dots, and a region corresponding ...

ORGANIC LIGHT-EMITTING DIODE COMPONENT AND MANUFACTURING METHOD THEREOF

An organic light-emitting diode (OLED) component includes a substrate; a pixel defining layer and a plurality of first electrodes over the substrate; an insulating layer correspondingly disposed over the pixel defining layer; a first light-emitting layer over each first electrode; and a charge generation layer over the first light-emitting layer. The plurality of first electrodes are physically separated from one another by the pixel defining layer. The insulating layer is configured to facilitate manufacturing of the OLED component, such that after formation of the charge generation layer without a mask, portions thereof positionally corresponding to any two adjacent first electrodes are physically separated by the insulating layer. The OLED component can be a white light organic light-emitting diode (WOLED) component including at least one other light-emitting layer in addition to the first light-emitting layer. 1. A method for manufacturing an organic light-emitting diode (OLED) component , comprising:providing a substrate, a plurality of first electrodes, and a pixel defining layer, wherein that the plurality of first electrodes and the pixel defining layer are over the substrate, and the plurality of first electrodes are physically separated from one another by the pixel defining layer;forming an insulating layer over, and positionally corresponding to, the pixel defining layer; andforming a first light-emitting layer over, and positionally corresponding to, each of the plurality of first electrodes;forming a charge generation layer over the insulating layer and the first light-emitting layer without a mask; 'the insulating layer and the charge generation layer are configured such that after formation of the charge generation layer, portions thereof positionally corresponding to any two adjacent first electrodes are physically separated by the insulating layer.', 'wherein2. The method of claim 1 , wherein the insulating layer is configured such that an ...

DISPLAY PANEL, METHOD FOR FABRICATING THE SAME AND DISPLAY DEVICE

A display panel, a method for fabricating the same, and a display device are provided. The display panel includes: a base substrate, and a plurality of pixels in an array on the base substrate, wherein each pixel includes a plurality of sub-pixels; each sub-pixel includes: a reflecting element on the base substrate, a first electrode on the reflecting element, a light-emitting element on the first electrode, and a second electrode on the light-emitting element; and in each of the pixels, micro-cavity lengths corresponding to the sub-pixels are different, wherein the micro-cavity length is the distance between the side of the reflecting element away from the base substrate and the side of the second electrode proximate to the base substrate. 1. A display panel , comprising: a base substrate , and a plurality of pixels in an array on the base substrate , wherein:at least one of the pixels comprises a plurality of sub-pixels;at least one of the sub-pixels comprises: a reflecting element on the base substrate, a first electrode on the reflecting element, a light-emitting element on the first electrode, and a second electrode on the light-emitting element; andin at least one of the pixels, micro-cavity lengths corresponding to the plurality of sub-pixels are different, wherein a micro-cavity length is a distance between a side of the reflecting element away from the base substrate and a side of the second electrode proximate to the base substrate.2. The display panel according to claim 1 , further comprising an insulation layer between reflecting surfaces of the reflecting elements and lower surfaces of the first electrodes; andin at least one of the pixels, thicknesses of the insulating layer corresponding to the plurality of sub-pixels are different.3. The display panel according to claim 2 , wherein at least one of the sub-pixels further comprises a connection structure running through the insulation layer claim 2 , and the connection structure is electrically ...

ORGANIC LIGHT EMITTING DEVICE

An organic light emitting device (OLED) is provided, may comprise a first organic electroluminescent cell, a second organic electroluminescent cell, a charge generation layer, disposed between the first and second organic electroluminescent cells, a first electrode and a second electrode formed at the first and second organic electroluminescent cells. The first organic electroluminescent cell comprises a fluorescent light emitting layer having a fluorescent emitting element and a phosphorescent light emitting layer having a phosphorescent emitting element. The second organic electroluminescent cell comprises at least one light emitting layer. 1. An organic light emitting device , comprising:a first organic electroluminescent cell, comprising a fluorescent light emitting layer having a fluorescent emitting element and a phosphorescent light emitting layer having a phosphorescent emitting element, wherein the fluorescent light emitting layer of the first organic electroluminescent cell emits a first light with a first range of wavelengths substantially from 430 nm to 490 nm and a full width at half maximum (FWHM) of a main peak is larger than 55 nm, while the phosphorescent light emitting layer of the first organic electroluminescent cell emits a second light with a second range of wavelengths substantially from 602 nm to 615 nm and a FWHM of the main peak is larger than 65 nm;a second organic electroluminescent cell, spaced apart from the first organic electroluminescent cell, and the second organic electroluminescent cell comprising at least one light emitting layer, wherein the light emitting layer of the second organic electroluminescent cell emits a third light with a third range of wavelengths substantially from 520 nm to 550 nm and a FWHM of the main peak is larger than 66 nm;a charge generation layer, disposed between the first and second organic electroluminescent cells; anda first electrode and a second electrode formed at the first and second organic ...

Display device

A display device includes a display, a plurality of first reflectors, a light processing member, and a plurality of light sources. The first reflectors each have a first bottom part that is disposed on a rear face side of the display and a first peripheral part that extends from an outer edge of the first bottom part toward a rear face of the display, with a surface of the first bottom part and a surface of the first peripheral part forming an obtuse angle. The light processing member is disposed between the display and the first reflectors, the light processing member being spaced apart from the first reflectors by a specific distance. The light sources are disposed relative to the surfaces of the first bottom parts, respectively.

Organic Light-Emitting Device and Organic Light-Emitting Display Using the Same

An organic light-emitting device includes: an anode and a cathode opposite each other, an organic light-emitting layer between the anode and the cathode, and a hole transport unit between the anode and the organic light-emitting layer and including two or more pairs of hole injection layers and hole transport layers each formed of a respective single material, the hole injection layers and the hole transport layers being alternately stacked. 1. An organic light-emitting device , comprising:an anode and a cathode opposite each other;an organic light-emitting layer between the anode and the cathode; anda hole transport unit between the anode and the organic light-emitting layer and including two or more pairs of hole injection layers formed of a single hole injection material and hole transport layers formed of a single hole transport material, the hole injection layers and the hole transport layers being alternately disposed.2. The organic light-emitting device of claim 1 , wherein a LUMO level of the hole injection layers is less than or equal to a HOMO level of the hole transport layers.3. The organic light-emitting device of claim 2 , wherein the LUMO level of the hole injection layers is less than the HOMO level of the hole transport layers by 0.01 eV to 1.00 eV.4. The organic light-emitting device of claim 1 , wherein the hole injection material comprises any one of: 7 claim 1 ,7 claim 1 ,8 claim 1 ,8-tetracyano-2 claim 1 ,3 claim 1 ,5 claim 1 ,6-tetrafluoroquinodimethane (F4TCNQ) claim 1 , fluorine-substituted 3 claim 1 ,4 claim 1 ,9 claim 1 ,10-perylentetracarboxilic dianhydride (PTCDA) claim 1 , cyano-substituted PTCDA claim 1 , 1 claim 1 ,4 claim 1 ,5 claim 1 ,8-naphthalene-tetracarboxilic dianhydride (NTCDA) claim 1 , hexanitrile hexaazatriphenylene (HAT) and hexaazatriphenylene-hexacarbonitrile (HAT-CN) claim 1 , or a derivative thereof.5. The organic light-emitting device of claim 1 , wherein the hole transport material comprises any one of: N claim 1 ,N ...

DISPLAY APPARATUS

Provided is a display apparatus. The display apparatus may include an organic light-emitting device (OLED) substrate including a structure in which at least one blue emission unit and at least one green emission unit may be stacked and emitting mixed light of blue light and green light; and a color-controlling unit for controlling color of light generated from the OLED substrate. 2. The display apparatus of claim 1 , wherein the OLED substrate has a tandem structure.3. The display apparatus of claim 1 , wherein the OLED substrate comprises a first blue emission unit claim 1 , a green emission unit claim 1 , and a second blue emission unit claim 1 , which are sequentially stacked claim 1 , and the green emission unit is located between the first and the second blue emission units.4. The display apparatus of claim 3 , further comprising: a first charge-generation layer located between the first blue emission unit and the green emission unit; and a second charge-generation layer located between the green emission unit and the second blue emission unit.5. The display apparatus of claim 1 , wherein claim 1 , Yin Formula 2A is N claim 1 , and ring CYin Formula 2A is:a pyridine group, a pyrimidine group, a quinoline group, an isoquinoline group, a benzoquinoline group, a benzoisoquinoline group, an imidazole group, a benzimidazole group, a naphthoimidazole group, a pyridoimidazole group, or a pyrimidoimidazole group; ora pyridine group, a pyrimidine group, a quinoline group, an isoquinoline group, a benzoquinoline group, a benzoisoquinoline group, an imidazole group, a benzimidazole group, a naphthoimidazole group, a pyridoimidazole group, or a pyrimidoimidazole group, each condensed with a cyclohexane group, a cyclohexene group, a norbornane group, or any combination thereof.6. The display apparatus of claim 1 , wherein claim 1 , in Formula 2A claim 1 , R claim 1 , R claim 1 , R claim 1 , and Rare each independently:hydrogen, deuterium, —F, or a cyano group;{'sub': ['1', ...

QUANTUM-DOT LIGHT EMITTING DEVICE COMPRISING SOLUTION PROCESSED CHARGE GENERATION JUNCTION AND MANUFACTURING METHOD THEREOF

Disclosed are a structure of a quantum-dot light emitting device including a charge generation junction layer and a method of fabricating the quantum-dot light emitting device. A quantum-dot light emitting device according to an embodiment of the present invention includes a negative electrode, a first charge generation junction layer including a p-type semiconductor layer and an n-type semiconductor layer, a quantum-dot light emitting layer, a hole transport layer, a second charge generation junction layer including a p-type semiconductor layer and an n-type semiconductor layer, and a positive electrode. The first and second charge generation junction layers is formed using a solution process. Accordingly, charge generation and injection can be stabilized, a process time can be shorted, and problems in the work function a positive or a negative electrode of a quantum-dot light emitting device can be addressed. 1forming a negative electrode;forming a first charge generation junction layer on the negative electrode;forming a quantum-dot light emitting layer on the first charge generation junction layer;forming a hole transport layer on the quantum-dot light emitting layer;forming a second charge generation junction layer on the hole transport layer; andforming a positive electrode on the second charge generation junction layer, wherein the first and second charge generation junction layers have a layer-by-layer structure wherein a p-type semiconductor layer and an n-type semiconductor layer are sequentially formed.. A method of fabricating a quantum-dot light emitting device, the method comprising: This application is a Divisional Application of U.S. application Ser. No. 16/336,354, filed on Mar. 25, 2019, which is a National Stage of International Application No. PCT/KR2017/008892, filed on Aug. 16, 2017, which claims the priority benefit of Korean Patent Application No. 10-2016-0123173, filed on Sep. 26, 2016 in the Korean Intellectual Property Office, the ...

ORGANIC ELECTROLUMINESCENT DEVICE, DEVICE ARRAY, METHOD FOR PRODUCING ORGANIC ELECTROLUMINESCENT DEVICE, METHOD FOR CONTROLLING EMISSION WAVELENGTH OF ORGANIC ELECTROLUMINESCENT DEVICE

An organic electroluminescent device having a donor layer containing a donor compound, a spacer layer containing a spacer compound, and an acceptor layer containing an acceptor compound in that order, wherein the donor compound and the acceptor compound are compounds to form an exciplex to radiate delayed fluorescence, and the excited triplet energy of the spacer compound is higher than the excited triplet energy of the exciplex, can be controlled to have different emission wavelengths not requiring change of the combination of the donor compound and the acceptor compound therein. 1. An organic electroluminescent device having a donor layer containing a donor compound , a spacer layer containing a spacer compound , and an acceptor layer containing an acceptor compound in that order , wherein:the donor compound and the acceptor compound are compounds to form an exciplex to radiate delayed fluorescence, andthe excited triplet energy of the spacer compound is higher than the excited triplet energy of the exciplex.2. The organic electroluminescent device according to claim 1 , wherein the spacer layer has a thickness of 10 nm or less.4. The organic electroluminescent device according to claim 1 , wherein claim 1 , when the excited triplet energy of the exciplex defined by the peak wavelength on the short wavelength side in the phosphorescence spectrum of exciplex emission observed in the layer containing the acceptor compound and the donor compound in a molar ratio of 1/1 is represented by T claim 1 , and when the excited triplet energy defined by the peak wavelength on the short wavelength side in the phosphorescence spectrum of the spacer compound is represented by T claim 1 , the excited triplet energy difference (T−T) is −0.01 to −0.5 eV.5. The organic electroluminescent device according to claim 1 , wherein the difference between the excited singlet energy Sand the excited triplet energy Tof the exciplex claim 1 , ΔEis 0.01 to 0.3 eV.6. The organic ...

LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND ELECTRONIC DEVICE

Provided is a light emitting device configured to suppress deterioration in a balance of white light emission and increase a service life. The light emitting device includes a red light emitting layer, a blue light emitting layer, a green light emitting layer, a first intermediate layer configured to adjust a transfer of holes and electrons between the red light emitting layer and the blue light emitting layer, and a second intermediate layer configured to adjust the transfer of holes and electrons between the blue light emitting layer and the green light emitting layer. The intermediate layers and the blue light emitting layer each contain an assist dopant material, a concentration of the assist dopant material in the intermediate layers being greater than a concentration of the assist dopant material in the blue light emitting layer. 1. A light emitting device comprising:a cathode;an anode;a first light emitting layer disposed between the cathode and the anode and configured to emit a first light;a second light emitting layer disposed between the cathode and the first light emitting layer and configured to emit a second light;a third light emitting layer disposed between the cathode and the second light emitting layer and configured to emit a third light;a first intermediate layer disposed between the first light emitting layer and the second light emitting layer and configured to adjust a transfer of holes and electrons between the first light emitting layer and the second light emitting layer;and a second intermediate layer disposed between the second light emitting layer and the third light emitting layer and configured to adjust a transfer of the holes and the electrons between the second light emitting layer and the third light emitting layer, whereinthe first light emitting layer, the second light emitting layer, and the third light emitting layer each include a light emitting dopant material and a host material having a hole transportability or an electron ...

DISPLAY DEVICE

A display device includes: a substrate including: first to third subpixels, an insulating layer including a trench on the substrate between at least two among the first to third subpixels, a first electrode on the insulating layer in each of the first to third subpixels, a fence in each of the first to third subpixels, the fence surrounding an edge of the first electrode, a light-emitting layer on the first electrode, the fence, and the insulating layer, a second electrode on the light-emitting layer, and a color filter layer including: a first color filter in the first subpixel, a second color filter in the second subpixel, and a third color filter in the third subpixel, wherein the second color filter is wider than the first color filter, and wherein the second color filter partially overlaps the first subpixel. 1. A display device , comprising: a first subpixel;', 'a second subpixel; and', 'a third subpixel;, 'a substrate comprisingan insulating layer comprising a trench on the substrate between at least two among the first subpixel, the second subpixel, and the third subpixel;a first electrode on the insulating layer in each of the first subpixel, the second subpixel, and the third subpixel;a fence in each of the first subpixel, the second subpixel, and the third subpixel, the fence surrounding an edge of the first electrode;a light-emitting layer on the first electrode, the fence, and the insulating layer;a second electrode on the light-emitting layer; and a first color filter in the first subpixel;', 'a second color filter in the second subpixel; and', 'a third color filter in the third subpixel,, 'a color filter layer comprisingwherein the second color filter is wider than the first color filter, andwherein the second color filter partially overlaps the first subpixel.2. The display device of claim 1 , wherein:the second color filter is wider than the third color filter; andthe second color filter partially overlaps the third subpixel.3. The display device of ...

Electroluminescent display device

An electroluminescent display device includes: an electroluminescent display device, including: a substrate including: a first subpixel, and a second subpixel, a respective first electrode in each of the first subpixel and the second subpixel on the substrate, a trench in a boundary between the first subpixel and the second subpixel on the substrate, an emission layer on the first electrode, and in the first subpixel, the second subpixel, and the boundary between the first subpixel and the second subpixel, at least some of the emission layer being noncontiguous in the trench, a pore below the emission layer inside the trench, an upper end of the pore being relatively higher than at least some of the emission layer, and a second electrode on the emission layer.

ELECTROLUMINESCENT DISPLAY DEVICE

An electroluminescent display device includes: a substrate including: a first subpixel, a second subpixel, and a third subpixel, an insulating layer on the substrate, the insulating layer including a trench, a first electrode in each of the first to third subpixels on the insulating layer, an emission layer on the first electrode and the insulating layer, and a second electrode on the emission layer, wherein the trench is in a boundary between the first subpixel and the second subpixel, and wherein the trench is not in a boundary between the second subpixel and the third subpixel. 1. An electroluminescent display device , comprising: a first subpixel;', 'a second subpixel; and', 'a third subpixel;, 'a substrate comprisingan insulating layer on the substrate, the insulating layer comprising a trench;a first electrode in each of the first to third subpixels on the insulating layer;an emission layer on the first electrode and the insulating layer; anda second electrode on the emission layer,wherein the trench is in a boundary between the first subpixel and the second subpixel, andwherein the trench is not in a boundary between the second subpixel and the third subpixel.2. The electroluminescent display device of claim 1 , wherein at least some of the emission layer is noncontiguous inside the trench.3. The electroluminescent display device of claim 1 , wherein: a first stack configured to emit first-colored light;', 'a second stack configured to emit second-colored light different from the first-colored light; and', 'a charge generation layer between the first stack and the second stack, and the first stack and the charge generation layer are each noncontiguous inside the trench., 'the emission layer comprises4. The electroluminescent display device of claim 3 , wherein: a yellow-green emitting layer; or', 'a red emitting layer and a green emitting layer, and, 'the first stack comprisesthe second stack comprises a blue emitting layer.5. The electroluminescent display ...

LIGHT EMITTING DEVICE AND MANUFACTURING METHOD THEREOF AND DISPLAY PANEL

The present disclosure provides a light emitting device including: a first electrode; a first light emitting layer on a side of the first electrode; an N-type charge generation layer on a side of the first light emitting layer distal to the first electrode; a P-type charge generation layer on a side of the N-type charge generation layer distal to the first light emitting layer; a second light emitting layer on a side of the P-type charge generation layer distal to the N-type charge generation layer; and a second electrode on a side of the second light emitting layer distal to the P-type charge generation layer. The N-type charge generation layer includes a host material which has a lowest unoccupied molecular orbital energy level less than or equal to −2.9 and a glass transition temperature greater than 130° C.

ORGANIC LIGHT-EMITTING DEVICE

An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, wherein the emission layer includes an electron transport host, a hole transport host, and a dopant, wherein the dopant includes an organometallic compound, and wherein the organometallic compound does not comprise iridium, wherein the organic light-emitting device satisfies predetermined parameters described in the specification. 1. An organic light-emitting device comprising:a first electrode,a second electrode facing the first electrode, andan organic layer disposed between the first electrode and the second electrode,whereinthe organic layer comprises an emission layer,the emission layer comprises an electron transport host, a hole transport host, and a dopant,the dopant comprises an organometallic compound, and the organometallic compound does not comprise iridium,the organic light-emitting satisfies a condition of LUMO(dopant)−LUMO(host-E)≥0.15 eV and LUMO(host-E)−HOMO(host-H)>T1(dopant),LUMO(dopant) indicates a lowest unoccupied molecular orbital (LUMO) energy level (expressed in electron volts) of a dopant in the emission layer,LUMO(host-E) indicates a LUMO energy level (expressed in electron volts) of an electron transport host in the emission layer,HOMO(host-H) indicates a highest occupied molecular orbital (HOMO) energy level (expressed in electron volts) of a hole transport host in the emission layer,T1(dopant) indicates a triplet energy level (expressed in electron volts) of a dopant in the emission layer,LUMO(dopant), LUMO(host-E), and HOMO(host-H) each indicate a negative value measured by differential pulse voltammetry using ferrocene as a reference material, andT1(dopant) is a value calculated from a peak wavelength of a phosphorescence spectrum of the dopant measured using a luminescence measuring device.2 ...

LIGHT-EMITTING APPARATUS, METHOD FOR FORMING LIGHT-EMITTING APPARATUS, AND DISPLAY APPARATUS

The present invention provides a light-emitting apparatus, a method for forming a light-emitting apparatus, and a display apparatus. The light-emitting apparatus comprises at least one OLED light-emitting unit and at least one quantum dot light-emitting unit, wherein the at least one quantum dot light-emitting unit and the at least one OLED light-emitting unit are arranged in series. 1. A light-emitting apparatus , comprising at least one OLED light-emitting unit and at least one quantum dot light-emitting unit ,wherein the at least one quantum dot light-emitting unit and the at least one OLED light-emitting unit are arranged in series,wherein the at least one quantum dot light-emitting unit comprises a quantum dot light-emitting layer, and at least one of the at least one quantum dot light-emitting unit comprises two or more adjacent quantum dot light-emitting layers.2. The light-emitting apparatus according to claim 1 , wherein the quantum dot light-emitting layer comprises a close-packed structure of a plurality of quantum dots.3. The light-emitting apparatus according to claim 2 , wherein the quantum dot light-emitting layer has a thickness of 1 to 100 nm.4. The light-emitting apparatus according to claim 1 , further comprising a charge generation layer provided between any two light-emitting units of the at least one OLED light-emitting unit and the at least one quantum dot light-emitting unit.5. The light-emitting apparatus according to claim 4 , wherein the charge generation layer comprises a layer composed of any one of the following materials: metal oxides claim 4 , Li or salts thereof claim 4 , Mg or salts thereof claim 4 , CsCO claim 4 , CsN claim 4 , CsF claim 4 , and a bulk material with a p-type/n-type dopant added.68-. (canceled)9. The light-emitting apparatus according to claim 1 , wherein the at least one quantum dot light-emitting unit comprises a red quantum dot light-emitting unit claim 1 , wherein the red quantum dot light-emitting unit ...

WHITE ORGANIC LIGHT EMITTING DIODE AND DISPLAY INCLUDING THE SAME

Disclosed are a tandem white organic light emitting diode with long lifespan and low driving voltage, and a display device including the same. The white organic light emitting diode includes a first light emitting part, a second light emitting part and a third light emitting part disposed between a first electrode and a second electrode. The first and third light emitting parts include a blue light emitting layer and the second light emitting part includes a red light emitting layer and a yellow-green light emitting layer. At least one layer of the red light emitting layer and the yellow-green light emitting layer includes a hole transport host based on a compound shown below: 2. The white organic light emitting diode according to claim 1 , wherein the yellow-green light emitting layer comprises:a first yellow-green light emitting layer contacting the red light emitting layer; anda second yellow-green light emitting layer contacting the first yellow-green light emitting layer.3. The white organic light emitting diode according to claim 2 , wherein a proportion of the dopant of the first yellow-green light emitting layer is higher than that of the second yellow-green light emitting layer.4. The white organic light emitting diode according to claim 3 , wherein the proportion of the dopant of the first yellow-green light emitting layer is set within a range of 10 to 50 wt % and the proportion of the dopant of the second yellow-green light emitting layer is set within a range of 5 to 30 wt %.5. The white organic light emitting diode according to claim 1 , wherein the red light emitting layer comprises the hole transport host claim 1 , andwherein a proportion of the hole transport host of the red light emitting layer is within a range of 10 to 50 wt %.6. The white organic light emitting diode according to claim 2 , wherein the first yellow-green light emitting layer comprises the hole transport host claim 2 , and wherein a proportion of the hole transport host of the ...

DISPLAY DEVICE

A display device includes a first display substrate including a display area and a non-display area, a second display substrate facing the first display substrate and including an end portion corresponding to the non-display area and extending along a first direction; a connection circuit board connected to the first display substrate at the non-display area thereof and disposed adjacent to the end portion of the second display substrate; and a first spacer and a second spacer each on the end portion of the second display substrate, and spaced apart from each other along the first direction to define a space therebetween. Along a second direction which crosses the first direction, a central portion of the connection circuit board connected to the first display substrate faces the space between the first spacer and the second spacer on the second display substrate. 1. A display device comprising:a first display substrate comprising a display area and a non-display area which is adjacent to the display area;a second display substrate facing the first display substrate, the second display substrate comprising an end portion corresponding to the non-display area of the first display substrate, the end portion extending along a first direction;a connection circuit board connected to the first display substrate at the non-display area thereof, the connection circuit board disposed adjacent to the end portion of the second display substrate; anda first spacer and a second spacer each on the end portion of the second display substrate, the first spacer and the second spacer spaced apart from each other along the first direction to define a space therebetween,wherein along a second direction which crosses the first direction, a central portion of the connection circuit board connected to the first display substrate, faces the space between the first spacer and the second spacer on the second display substrate.2. The display device of claim 1 , further comprising a protection ...

LIGHT-EMITTING DEVICE

A light-emitting device comprising: a first electrode, a second electrode facing the first electrode; an emission layer disposed between the first electrode and the second electrode; and a first charge transport layer disposed between the first electrode and the emission layer, wherein a band gap energy of the emission layer and a band gap energy of the first charge transport layer are different from each other, the emission layer comprises a first perovskite compound, and the first charge transport layer consists of a second perovskite compound. 1. A light-emitting device comprising:a first electrode;a second electrode facing the first electrode;an emission layer disposed between the first electrode and the second electrode; anda first charge transport layer disposed between the first electrode and the emission layer,wherein a band gap energy of the emission layer and a band gap energy of the first charge transport layer are different from each other,the emission layer comprises a first perovskite compound, andthe first charge transport layer consists of a second perovskite compound.2. The light-emitting device of claim 1 , wherein the first charge transport layer does not contain an organic compound or a metal oxide.3. The light-emitting device of claim 1 , wherein the first perovskite compound and the second perovskite compound are different from each other.4. The light-emitting device of claim 1 , wherein the emission layer is in direct contact with the first charge transport layer.5. The light-emitting device of claim 1 , wherein the band gap energy of the emission layer is less than the band gap energy of the first charge transport layer.61. The light-emitting device of claim 1 , wherein the first perovskite compound is represented by Formula claim 1 , and the second perovskite compound is represented by Formula 2:{'br': None, 'sup': 1', '1', '1, 'sub': '3', '[A] [B] [X]\u2003\u2003Formula 1'}{'br': None, 'sup': 2', '2', '2, 'sub': '3', '[A] [B] [X]\u2003\ ...

Display Panel and Head Mounted Display Device Including the Same

Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same. 1. A display panel comprising:a substrate having a plurality of subpixels;a reflective plate on the substrate;a color compensation layer on the reflective plate;a first electrode on the color compensation layer for each of the plurality of subpixels;a second electrode above the first electrode;a white organic light-emitting stack between the first electrode and the second electrode, the white organic light-emitting stack comprising emissive layers configured to emit at least different colors of light; anda filter unit and a transmission unit on the second electrode, the filter unit being configured to selectively transmit some wavelengths of light, among light emitted through the white organic light-emitting stack, the transmission unit being configured to transmit all wavelengths of light emitted through the white organic light-emitting stack.2. The display panel according to claim 1 , wherein the color compensation layer is thicker than the white organic light-emitting stack and thinner than the substrate.3. The display panel according to claim 1 , wherein the color compensation layer adjusts a reflection light path between the reflective plate and the first electrode.4. The display panel according to claim 1 , wherein the color compensation layer is made of an inorganic dielectric material.5. The display panel according to claim 1 , whereinthe white organic light-emitting stack generates first light that is transmitted to the second electrode and second light that advances toward the first ...

ORGANIC LIGHT EMITTING DIODE AND DISPLAY DEVICE HAVING THE SAME

An organic light emitting diode includes: a first electrode layer; a second electrode layer on the first electrode layer and facing the first electrode layer; a first light emitting layer between the first electrode layer and the second electrode layer and comprising a phosphorescent material; a first hole control layer between the first electrode layer and the first light emitting layer; a second light emitting layer between the first light emitting layer and the second electrode layer and comprising a fluorescent material; and a charge generating layer between the first light emitting layer and the second light emitting layer, the first hole control layer having a thickness equal to or greater than 100 angstroms and equal to or smaller than 900 angstroms. 1. An organic light emitting diode comprising:a first electrode layer;a second electrode layer on the first electrode layer and facing the first electrode layer;a first light emitting layer between the first electrode layer and the second electrode layer and comprising a phosphorescent material;a first hole control layer between the first electrode layer and the first light emitting layer;a second light emitting layer between the first light emitting layer and the second electrode layer and comprising a fluorescent material; anda charge generating layer between the first light emitting layer and the second light emitting layer, the first hole control layer having a thickness equal to or greater than 100 angstroms and equal to or smaller than 900 angstroms.2. The organic light emitting diode of claim 1 , wherein the first light emitting layer and the second light emitting layer are configured to generate light having a same color.3. The organic light emitting diode of claim 2 , wherein the light is a blue color light.4. The organic light emitting diode of claim 1 , wherein the first electrode layer is a reflective electrode layer claim 1 , and the second electrode layer is a semi-transmissive electrode layer.5. ...

ELECTROLUMINESCENT DEVICE AND METHOD FOR MANUFACTURING THE SAME AND DISPLAY DEVICE

The present disclosure provides an electroluminescent device, a method for manufacturing the same, and a display device. The electroluminescent device of the present disclosure includes: a first substrate and a second substrate disposed opposite to each other; a first electrode disposed on a side of the first substrate proximal to the second substrate; a main spacer disposed between the first substrate and the second substrate and configured to support the first substrate and the second substrate; a first spacer spaced apart from the main spacer disposed on the side of the second substrate proximal to the first substrate; and an auxiliary electrode layer disposed on at least part of an surface of the first spacer proximal to the first substrate, wherein at least part of the auxiliary electrode layer is in contact with the first electrode for electrical connection. 1. An electroluminescent device , comprising:a first substrate and a second substrate disposed opposite to each other;a first electrode disposed on a side of the first substrate proximal to the second substrate;a main spacer disposed between the first substrate and the second substrate and configured to support the first substrate and the second substrate;a first spacer spaced apart from the main spacer disposed on the side of the second substrate proximal to the first substrate; andan auxiliary electrode layer disposed on at least part of an surface of the first spacer proximal to the first substrate,wherein at least part of the auxiliary electrode layer is in contact with the first electrode for electrical connection.2. The electroluminescent device according to claim 1 , wherein the main spacer is in a compressed state.3. The electroluminescent device according to claim 1 , wherein the main spacer is disposed on the side of the second substrate proximal to the first substrate.4. The electroluminescent device according to claim 1 , wherein the first spacer is in an original state or the first spacer is ...

ORGANIC LIGHT-EMITTING DEVICE

An organic light-emitting device includes a first electrode, a first light-emitting layer, a first low work function layer, a second low work function layer, a conductive etching-resistant layer, a first hole-injection layer, a second light-emitting layer, and a second electrode. The first light-emitting layer is disposed over the first electrode. The first low work function layer is disposed over the first light-emitting layer. The second low work function layer is disposed over the first low work function layer, and a work function of the second low work function layer is greater than a work function of the first low work function layer. The conductive etching-resistant layer is disposed over the second low work function layer. The first hole-injection layer is disposed over the conductive etching-resistant layer. The second light-emitting layer is disposed over the first hole-injection layer. The second electrode is disposed over the second light-emitting layer. 1. An organic light-emitting device comprising:a first electrode;a first light-emitting layer disposed over the first electrode;a first low work function layer disposed over the first light-emitting layer;a second low work function layer disposed over the first low work function layer;a first hole-injection layer disposed over the second low work function layer;a second light-emitting layer disposed over the first hole-injection layer; anda second electrode disposed over the second light-emitting layer;wherein the first low work function layer comprises a lithium compound and second low work function layer comprises is a light-transparent conductive material.2. The organic light-emitting device of claim 1 , further comprising a conductive etching-resistant layer disposed between the second low work function layer and the first hole-injection layer.3. The organic light-emitting device of claim 2 , wherein the first low work function layer has a thickness ranged from about 5 Å to about 100 Å claim 2 , the ...

ORGANIC ELECTROLUMINESCENET DEVICE

An organic electroluminescent device includes at least two light-emissive units provided between a cathode electrode and an anode electrode opposed to the cathode electrode, each of the light-emissive units including at least one light-emissive layer. The light-emissive units are partitioned from each other by at least one charge generation layer, the charge generation layer being an electrically insulating layer having a resistivity of not less than 1.0×10Ωcm. 1. An organic electroluminescent device comprising:at least two light-emissive units provided between a cathode electrode and an anode electrode opposed to said cathode electrode, each of said light-emissive units including at least one light-emissive layer;{'sup': '2', 'wherein said light-emissive units are partitioned from each other by at least one charge generation layer, said charge generation layer constituting an electrically insulating layer having a resistivity of not less than 1.0×10Ωcm.'}2. The organic electroluminescent device according to claim 1 , wherein the charge generation layer constitutes an electrically insulating layer having a resistivity of not less than 1.0×10Ωcm.3. The organic electroluminescent device according to or claim 1 , wherein said charge generation layer comprises at least one of a laminated and mixed layer formed from two different materials;wherein a charge transfer complex including a radical cation and a radical anion is formed upon an oxidation-reduction reaction between said two materials, and a radical cation state and a radical anion state in said charge transfer complex is transferred to a direction of the cathode and a direction of the anode, respectively, when a voltage is applied to said device, so that a hole is injected into the light-emissive unit which is located on a cathode side of the charge generation layer and is adjacent thereto, and an electron is injected into the light-emissive unit which is located on an anode side of the charge generation layer ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device can include a first electrode on a substrate; a first emission part on the first electrode, the first emission part including a first emission layer; a second emission part on the first emission part, the second emission part including a second emission layer; a third emission part on the second emission part, the third emission part including a third emission layer; and a second electrode on the third emission part, in which a first thickness between the substrate and the first emission layer, a second thickness between the first emission layer and the second emission layer, a third thickness between the second emission layer and the third emission layer, and a fourth thickness between the third emission layer and the second electrode are different from each other, and the first, second emission, and third emission parts include at least one organic layer. 1. An organic light emitting display device , comprising:a first electrode on a substrate;a first emission part on the first electrode, the first emission part including a first emission layer;a second emission part on the first emission part, the second emission part including a second emission layer;a third emission part on the second emission part, the third emission part including a third emission layer; anda second electrode on the third emission part,wherein a first thickness between the substrate and the first emission layer, a second thickness between the first emission layer and the second emission layer, a third thickness between the second emission layer and the third emission layer, and a fourth thickness between the third emission layer and the second electrode are different from each other, andwherein the first emission part, the second emission part, and the third emission part include at least one organic layer.2. The organic light emitting display device of claim 1 , wherein the first thickness is larger than the second thickness or the third thickness.3. ...

DISPLAY PANEL CAPABLE OF PREVENTING A DEFECT IN LIGHT EMISSION OF AN ORGANIC LIGHT EMITTING ELEMENT

A display panel includes an auxiliary electrode on a base substrate, a first electrode spaced from the auxiliary electrode, a first light emitting unit on the auxiliary electrode and the first electrode, an conductive thin film layer on the first light emitting unit, a second light emitting unit on the conductive thin film layer, a first contact hole through the conductive thin film layer to expose the auxiliary electrode, a insulating layer in the first contact hole, and a second electrode including a first electrode part and a second electrode part, the first electrode part being on the insulating layer in the first contact hole, and the second electrode part overlapping the first electrode and being on the second light emitting unit, in which the insulating layer is between the first electrode part and the conductive thin film layer. 1. A display panel comprising: a display area including a first area and a second area; and', 'a non-display area adjacent to the display area;, 'a base substrate includingan auxiliary electrode on the first area of the base substrate;a first electrode on the second area of the base substrate;a first light emitting unit on the auxiliary electrode and the first electrode;a conductive thin film layer on the first light emitting unit;a second light emitting unit on the conductive thin film layer;an insulating layer on the second light emitting unit; anda second electrode on the insulating layer,wherein the insulating layer includes a first part covering a first contact hole that penetrates the first light emitting unit, the conductive thin film layer, and the second light emitting unit, which overlap with the first area, to expose a portion of the auxiliary electrode, andwherein a portion of the first part insulates the second electrode from the conductive thin film layer.2. The display panel of claim 1 , wherein the portion of the first part is in contact with an exposing surface of the conductive thin film layer claim 1 , which ...

DISPLAY DEVICE, METHOD OF MANUFACTURING DISPLAY DEVICE, AND ELECTRONIC DEVICE

A display device according to the present disclosure includes a first electrode, an inorganic hole injecting and transporting layer which is formed of an inorganic material and is formed on the first electrode, at least two light emitting units including a first organic light emitting unit and a second organic light emitting unit having different luminescent colors which are formed on the inorganic hole injecting and transporting layer, an electron transport layer which is formed on the at least two organic light emitting units, and a second electrode which is formed on the electron transport layer. Furthermore, a light emitting layer of the first organic light emitting unit is formed by laminating a light emitting layer of a first luminescent color and a light emitting layer of a second luminescent color, and a light emitting layer of the second organic light emitting unit is formed of the light emitting layer of the second luminescent color. 1. A display device comprising:a first electrode;an inorganic hole injecting and transporting layer configured to be formed of an inorganic material and be formed on the first electrode;at least two light emitting units including a first organic light emitting unit and a second organic light emitting unit having different luminescent colors configured to be formed on the inorganic hole injecting and transporting layer;an electron transport layer configured to be formed on the at least two organic light emitting units; anda second electrode configured to be formed on the electron transport layer, whereina light emitting layer of the first organic light emitting unit is formed by laminating a light emitting layer of a first luminescent color and a light emitting layer of a second luminescent color, anda light emitting layer of the second organic light emitting unit is formed of the light emitting layer of the second luminescent color.2. The display device according to claim 1 , comprising:three light emitting units that are a ...

ORGANIC ELECTROLUMINESCENT ELEMENT AND LIGHTING DEVICE

This organic electroluminescent element has a structure in which, between a first electrode and a second electrode, a plurality of light-emitting units are layered with a charge generation layer interposed therebetween, and comprises a red light-emitting unit and a green light-emitting unit. In the organic electroluminescent element, yellow or orange light obtained by light emission from the two light-emitting units has a peak wavelength in each of a red wavelength range of 590-640 nm and a green wavelength range of 500-560 nm, and the difference between the peak wavelength of the yellow or orange light and the dominant wavelength of the yellow or orange light is 15-25 nm. 117-. (canceled)18. An organic electroluminescent element having a structure in which a plurality of light emitting units each including a light emitting layer made of at least an organic compound are stacked one on top of another between a first electrode and a second electrode with a charge generating layer sandwiched between the light emitting units , the organic electroluminescent element comprising:a red light emitting unit including a light emitting layer formed of a red light emitting layer which emits red light with a peak wavelength in a red wavelength band; anda green light emitting unit including a light emitting layer formed of a green light emitting layer which emits green light with a peak wavelength in a green wavelength band, whereinyellow or orange light produced by light emission of the red light emitting unit and the green light emitting unit has a peak wavelength in a red wavelength band of 590 nm to 640 nm and a peak wavelength in a green wavelength band of 500 nm to 560 nm, anda difference between the peak wavelength of the yellow or orange light and a dominant wavelength of the yellow or orange light is 15 nm to 25 nm.19. The organic electroluminescent element according to claim 18 , whereinthe red light emitting layer has one peak wavelength in the red wavelength band,the ...

ELECTROLUMINESCENT DISPLAY DEVICE

Matrix display device () having organic electroluminescent layers, successively comprising: a substrate, a first control electrode (), a first light-emitting assembly comprising at least a first organic electroluminescent layer (), a second light-emitting assembly comprising at least a second organic electroluminescent layer (), a second electrode () that has opposite polarity to said first electrode and that is at least partially transparent with respect to the light emitted by said electroluminescent layers; said control electrode () being structured to form a display matrix; said device being characterized in that the product of the mean refraction index of the organic layers and the distance between the surface opposite the substrate of said control electrode () and the surface at the substrate side of said second electrode () is between 125 nm and 205 nm. 19-. (canceled)10. A matrix display device having organic electroluminescent layers , successively comprising:a substrate;a first electrode, to serve as a control electrode having a structure forming a display matrix;a first light-emitting assembly comprising at least one first organic electroluminescent layer;a second light-emitting assembly comprising at least one second organic electroluminescent layer;a second electrode, having opposite polarity to said first electrode, the second electrode being at least partially transparent with respect to light emitted by said at least one first organic electroluminescent layer and said at least one second organic electroluminescent layer, a product of a mean refraction index of said at least one first organic electroluminescent layer, said at least one second organic electroluminescent layer, and a distance between a surface opposite the substrate of said first electrode and a surface at the substrate side of said second electrode is between 155 nm and 180 nm,', 'a distance between a surface opposite the substrate of said first electrode and a surface opposite the ...

DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME

An organic light emitting diode display includes an integrated circuit, a first electrode, a spacer, an organic material stack layer, and a second electrode. The first electrode is electrically connected to the integrated circuit and has a top surface, a bottom surface, and an inclined surface connecting the top and bottom surfaces. An angle between the inclined surface and the bottom surface is in a range from about 45 degrees to about 80 degrees. The spacer is disposed to cover the inclined surface of the first electrode. The organic material stack layer is disposed on the first electrode. The second electrode is disposed on the organic material stack layer and the spacers. 1. An organic light emitting diode display device , comprising:an integrated circuit;a first electrode, electrically connected to the integrated circuit, and having a top surface, a bottom surface, and an inclined surface connecting the top surface and the bottom surface, wherein an angle included between the inclined surface and the lower surface is from about 45 degrees to about 80 degrees;a spacer layer, covering the inclined surface of the first electrode;an organic material stack layer, disposed on the first electrode; anda second electrode, disposed on the organic material stack layer and the spacer layer.2. The organic light emitting diode display device according to claim 1 , wherein the second electrode has an undulating top surface.3. The organic light emitting diode display device according to claim 1 , further comprising a blocking layer disposed on the top surface of the first electrode.4. The organic light emitting diode display device according to claim 3 , wherein a thickness of the blocking layer is from about 30 Å to about 200 Å.5. The organic light emitting diode display device according to claim 3 , wherein a thickness of a first portion of the blocking layer between the spacer layer and the first electrode is greater than a thickness of a second portion of the blocking ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An OLED display device including: a substrate including a display area and a non-display area; an organic light emitting element including a first electrode, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer; a first conductive line at the non-display area of the substrate; a first organic layer on the first conductive line; a second conductive line on the first organic layer and connected to the first conductive line; a second organic layer on the second conductive line; and a third conductive line on the second organic layer and connected to the second conductive line. The third conductive line is connected to the second electrode. The first electrode is at the display area of the substrate. 1. An organic light emitting display device , comprising:a substrate comprising a display area and a non-display area;an organic light emitting element comprising a first electrode, an organic light emitting layer (OL) over the first electrode, and a second electrode over the organic light emitting layer, wherein the first electrode is at the display area of the substrate;a gate line and a data line on the substrate;a thin film transistor connected to the gate line and the data line;an insulating layer over the thin film transistor;a first conductive line on the insulating layer at the non-display area of the substrate;a first organic layer on the first conductive line; anda second conductive line at least a part of the second conductive line being on the first organic layer and connected to the first conductive line, andwherein the second conductive line is connected to the second electrode.2. The organic light emitting display device of claim 1 , wherein the first conductive line and the second conductive line constitute a link line.3. The organic light emitting display device of claim 1 , the second conductive line is at the non-display area of the substrate.4. The organic light emitting display device of ...

Electroluminescent Display Device

Disclosed is an electroluminescent display device including a first pixel including a first sub pixel configured to emit first colored light, a second sub pixel configured to emit second colored light, and a third sub pixel configured to emit third colored light, a first electrode in the first sub pixel, an emission layer on the first electrode, a second electrode on the emission layer, and a first charge blocking layer provided below the second electrode and configured to prevent a light emission in the emission layer, wherein the first electrode is electrically connected with a driving thin film transistor in a first contact area provided in the first sub pixel, and the first charge blocking layer is overlapped with the first contact area. 1. An electroluminescent display device comprising:a first pixel including a first sub pixel configured to emit first colored light, a second sub pixel configured to emit second colored light, and a third sub pixel configured to emit third colored light;a first electrode in the first sub pixel;an emission layer on the first electrode;a second electrode on the emission layer; anda first charge blocking layer provided below the second electrode and configured to prevent a light emission in the emission layer,wherein the first electrode is electrically connected with a driving thin film transistor in a first contact area provided in the first sub pixel, andthe first charge blocking layer is overlapped with the first contact area.2. The electroluminescent display device according to claim 1 , wherein the first charge blocking layer is not overlapped with a first emission area provided in the first sub pixel.3. The electroluminescent display device according to claim 1 , 'wherein the first charge blocking layer is provided between the second emission layer and the second electrode.', 'wherein the emission layer includes a first stack having a first emission layer, a second stack having a second emission layer, and a charge generation ...

LIGHT EMITTING ELEMENT AND DISPLAY DEVICE INCLUDING THE SAME

A light-emitting element may include a first electrode, a second electrode facing the first electrode, a first hole transport layer disposed above the first electrode, a first electron transport layer disposed between the first hole transport layer and the second electrode. A first light-emitting part and a second light-emitting part that emit different light may be disposed between the first hole transport layer and the first electron transport layer. The first light-emitting part may include a first blue emission layer, a second electron transport layer, a charge generation layer, and a second blue emission layer, and the first blue emission layer may be disposed above the first hole transport layer. At least one of the first electron transport layer and the second electron transport layer may be directly disposed above at least one of the first blue emission layer and the second blue emission layer. 1. A light-emitting element comprising:a first electrode;a second electrode facing the first electrode;a first hole transport layer disposed above the first electrode;a first electron transport layer disposed between the first hole transport layer and the second electrode; anda first light-emitting part and a second light-emitting part which are disposed between the first hole transport layer and the first electron transport layer, the first light-emitting part and the second light-emitting part being spaced apart from each other, wherein a first blue emission layer disposed above the first hole transport layer;', 'a second blue emission layer disposed above the first blue emission layer;', 'a charge generation layer disposed between the first blue emission layer and the second blue emission layer; and', 'a second electron transport layer disposed between the first blue emission layer and the charge generation layer,, 'the first light-emitting part comprisesthe second light-emitting part comprises a second emission layer that emits red light or green light, andat ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device comprises two emission portions between first and second electrodes, wherein at least one among the two emission portions includes two emitting layers, whereby efficiency and a color reproduction ratio may be improved. 1. An organic light emitting display device , comprising:first and second electrodes facing each other on a substrate; andorganic layers between the first electrode and the second electrode, the organic layers including a first emission portion on the first electrode and a second emission portion on the first emission portion,wherein the first emission portion includes a first hole transport layer, a green emitting layer, a red emitting layer, and a first electron transport layer,wherein the second emission portion includes a second hole transport layer, a dark blue emitting layer, and a second electron transport layer,wherein the red emitting layer is closer to the first electrode than the green emitting layer,wherein the organic layers have a thickness in the range of 200 nm to 230 nm, andwherein the first hole transport layer is between the first electrode and the red emitting layer, and the first electron transport layer is between the green emitting layer and the second hole transport layer.2. The organic light emitting display device of claim 1 , wherein a maximum wavelength of a PL peak of the green emitting layer includes 532 nm claim 1 , a maximum wavelength of a PL peak of the red emitting layer includes 620 nm claim 1 , and a maximum wavelength of a PL peak of the dark blue emitting layer includes 444 nm.3. The organic light emitting display device of claim 1 , wherein a combination of the first emission portion and the second emission portion includes electroluminescence (EL) peaks in the ranges of 440 nm to 480 nm claim 1 , 530 nm to 580 nm claim 1 , and 600 nm to 650 nm.4. The organic light emitting display device of claim 1 , wherein each of the first electrode and the second electrode includes ...

Laminated Organic Light Emitting Diode Display Panel and Manufacturing Method Thereof, and Display Device

A laminated Organic Light Emitting Diode (OLED) display panel and a manufacturing method thereof and a display device are provided. The laminated OLED display panel includes: a pixel partition layer, which defines a plurality of openings; a first charge generate layer, which has a first doping type, being positioned on the pixel partition layer; and a second charge generate layer, which has a second doping type, being positioned on the first charge generate layer. The laminated OLED display panel further includes: a barrier layer, which is positioned between the first charge generation layer and the second charge generation layer and at least corresponds to a position of the pixel partition layer.

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device includes a first electrode and a second electrode disposed on a substrate opposite to each other, a first stack including a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode, a second stack including a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode, and a charge generation layer disposed between the first stack and the second stack and including an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks. The P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer. 1. An organic light emitting display device comprising:a first electrode and a second electrode disposed on a substrate opposite to each other;a first stack comprising a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode;a second stack comprising a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode; anda charge generation layer disposed between the first stack and the second stack and comprising an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks,wherein the P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer.2. The organic light emitting display device according to claim 1 , wherein the hole transport material doped in the P-type charge generation layer has a mobility of 5.0×10Vs/cmto 1.0× ...

Light-Emitting Device, Electronic Device, and Lighting Device

A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission. 1. (canceled)2. A bottom-emission light-emitting device comprising:a substrate; a first insulating layer over the substrate;', 'an oxide semiconductor layer over the first insulating layer;', 'a source electrode, a drain electrode, and a gate electrode over the oxide semiconductor layer; and', 'a second insulating layer over the oxide semiconductor layer, the source electrode, and the drain electrode;, 'a transistor comprisingan anode over the transistor;a first light-emitting element emitting blue light;a second light-emitting element emitting green light;a third light-emitting element emitting red light; anda fourth light-emitting element,wherein:one of the source electrode and the drain electrode is electrically connected to the anode,the anode is configured to function as a first electrode of any one of the first to fourth light-emitting elements,the first to fourth light-emitting elements comprises the same structure of a first EL layer and a second EL ...

ORGANIC LIGHT EMITTING DIODE

Provided is an organic light emitting diode including a first electrode layer, a second electrode layer opposing the first electrode layer, a first light emitting layer between the first and second electrode layers to generate a first light having a first wavelength, a second light emitting layer between the first light emitting layer and the second electrode layer to generate a second light having a second wavelength which is longer than the first wavelength, and a charge generating layer between the first and second light emitting layers. The first and second lights are emitted through the second electrode layer. An optical length between the first and second electrode layers is substantially the same as a fourth resonant distance of the first light. 118.-. (canceled)19. An organic light emitting diode , comprising:a first electrode layer having a first surface;a second electrode layer having a second surface facing the first electrode layer;a first light emitting layer between the first and second electrode layers, the first light emitting layer to generate a first light having a first wavelength;a second light emitting layer between the first light emitting layer and the second electrode layer, the second light emitting layer to generate a second light having a second wavelength, longer than the first wavelength; anda charge generating layer between the first and second light emitting layers, whereina distance between the first and the second surfaces is substantially equal to a location having a fourth resonant peak of the first light.20. The organic light emitting diode as claimed in claim 19 , wherein:the first electrode layer is reflective, andthe second electrode layer is transflective.21. The organic light emitting diode as claimed in claim 19 , wherein the location of the fourth peak of resonant of the first light is between about 4000 Å to about 4400 Å.22. The organic light emitting diode as claimed in claim 19 , wherein the second light and the first ...

ELECTROLUMINESCENT DISPLAY DEVICE

An electroluminescent display device includes first and second substrates on which a pixel including first, second, and third sub-pixels are defined, a light-emitting diode disposed at each of the first, second, and third sub-pixels on the first substrate and including a first electrode, a light-emitting layer and a second electrode, and a bank between adjacent sub-pixels along a first direction, wherein the light-emitting layer includes first, second, and third light-emitting layers, wherein each of the first and second light-emitting layers includes first and second light-emitting material layers, and the third light-emitting layer includes a second light-emitting material layer, and wherein a height of the first light-emitting material layer of each of the first and second light-emitting layer increases as it approaches the bank, and the second light-emitting material layers of the first, second, and third light-emitting layers are disposed on top and side surfaces of the bank. 1. An electroluminescent display device , comprising:a first substrate and a second substrate on which a pixel including first, second, and third sub-pixels are defined;a light-emitting diode disposed at each of the first, second, and third sub-pixels on an inner surface of the first substrate and including a first electrode, a light-emitting layer and a second electrode; anda bank between adjacent sub-pixels along a first direction among the first, second, and third sub-pixels,wherein the light-emitting layer includes first, second, and third light-emitting layers corresponding to the first, second, and third sub-pixels, respectively,wherein each of the first and second light-emitting layers includes a first light-emitting material layer and a second light-emitting material layer, and the third light-emitting layer includes a second light-emitting material layer, andwherein a height of the first light-emitting material layer of each of the first and second light-emitting layer increases ...

ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME

An organic light emitting device that includes a substrate and an organic light emitting diode positioned on the substrate is provided. The organic light emitting diode includes a first electrode, a second electrode facing the first electrode, a first emitting material layer including a first compound and positioned between the first and second electrodes, and a second emitting material layer including a second compound and positioned between the first emitting material layer and the second electrode. Each of the first and second compounds is an anthracene derivative, and a deuteration ratio of the first compound is greater than that of the second compound. 5. The organic light emitting diode according to claim 1 , wherein the first emitting material layer includes a third compound being a boron derivative claim 1 , and the second emitting material layer includes a fourth compound being a boron derivative.8. The organic light emitting diode according to claim 5 , wherein a weight % of the third compound in the first emitting material layer is equal to or greater than a weight % of the fourth compound in the second emitting material layer.9. The organic light emitting diode according to claim 8 , wherein a thickness of the first emitting material layer is equal to or smaller than a thickness of the second emitting material layer.10. The organic light emitting diode according to claim 1 , further comprising a charge generation layer between the first and second emitting material layers.11. The organic light emitting diode according to claim 1 , further comprising:a third emitting material layer between the first and second emitting material layers;a first charge generation layer between the first and third emitting material layers; anda second charge generation layer between the second and third emitting material layers.12. The organic light emitting diode according to claim 11 , wherein the third emitting material layer includes a red emitting material layer and a ...

ORGANIC ELECTROLUMINESCENT ELEMENT

An organic electroluminescent element having a structure in which a plurality of light-emitting layers stacked between a first electrode with light reflectivity and a second electrode with optical transparency while one or more interlayers with a light transmissive property are interposed between the plurality of light-emitting layers. A first interlayer is formed as the interlayer closest to the first electrode. A first light-emitting unit is formed between the first electrode and the first interlayer to include a first light-emitting layer which has a first light-emitting source, and a second light-emitting unit is formed on a side of the first interlayer close to the second electrode to include a second light-emitting layer which has a second light-emitting source. The first interlayer is a semi-transmissive layer which has both of optical transparency and light reflectivity and has a total light absorption ratio of 10% or less. 19-. (canceled)11. The organic electroluminescent element as set forth in claim 10 , wherein the semi-transmissive layer has a total light reflectance of 10% or more but less than 50%.12. The organic electroluminescent element as set forth in claim 10 , wherein the semi-transmissive layer contains Ag or an alloy of Ag as a main component.13. The organic electroluminescent element as set forth in claim 10 , wherein l is not less than 1 in the equation for X.14. The organic electroluminescent element as set forth in claim 10 , wherein l claim 10 , m claim 10 , and n are not less than 1 claim 10 , respectively in the equations for X claim 10 , Y claim 10 , and Z.15. The organic electroluminescent element as set forth in any one of claim 10 , further comprising a light diffusion layer on an outcoupling face of the second electrode.16. The organic electroluminescent element as set forth in claim 15 , wherein an optical path length D(λ) between a face of the light diffusion layer close to an outcoupling side and the semi-transmissive layer at ...

ORGANIC EL DEVICE AS WELL AS DISPLAY APPARATUS, IMAGE PICKUP APPARATUS, COMMUNICATION APPARATUS, LIGHTING APPARATUS, LUMINAIRE, AND MOVING BODY EACH INCLUDING THE SAME

An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high Slevel. 1. An organic EL device comprising at least:an anode;a first light-emitting layer;an intermediate layer;a second light-emitting layer; anda cathode in this order,the intermediate layer being located between the first light-emitting layer and the second light-emitting layer,wherein the first light-emitting layer contains a first host and a first dopant,the second light-emitting layer contains a second host and a second dopant,the intermediate layer contains an aromatic hydrocarbon compound,the following relationship (a) is satisfied between the first host and the first dopant,the following relationship (b) is satisfied between the second host and the second dopant, andthe following relationship (c) is satisfied between the hydrocarbon compound of the intermediate layer and the first host,(a) LUMO (H1)>LUMO (D1)(b) LUMO (H2)>LUMO (D2)(c) HOMO (H1)≥HOMO (IL)wherein LUMO (H1), LUMO (D1), LUMO (H2), and LUMO (D2) in (a) to (c) denote LUMO energy levels of the first host, the first dopant, the second host, and the second dopant, respectively, and HOMO (H1) and HOMO (IL) denote HOMO energy levels of the first host and the intermediate layer material, respectively.2. The organic EL device according to claim 1 , wherein the intermediate layer has a lowest excited singlet energy level of 2.58 eV or more.3. The organic EL device according to claim 1 , wherein the aromatic hydrocarbon compound is a compound in which at least two of ...

ORGANIC ELECTROLUMINESCENCE DISPLAY PANEL, MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE

Disclosed are an organic electroluminescence display panel, a manufacturing method therefor, and a display device. The organic electroluminescence display panel comprises an array substrate and an opposite substrate which are disposed opposite to each other; the opposite substrate comprises a first base substrate and multiple spacers located on the first base substrate, and the array substrate comprises a second base substrate, multiple sub pixels located on the second base substrate, a pixel defining layer for defining regions of the sub pixels, and elastomers located on the pixel defining layer and having one-to-one correspondence to at least part of the spacers in terms of position; the elastomers are compressed by the corresponding spacers during cell aligning to buffer the pressure applied to the array substrate. 1. An Organic Light-Emitting Diode (OLED) display panel , comprising:a first base substrate;a plurality of spacers on the first base substrate;a second base substrate opposite to a side of the first base substrate provided with the spacers;a pixel defining layer on a surface of the second base substrate facing the first base substrate; anda plurality of elastomers on the pixel defining layer and in one-to-one correspondence to positions of at least part of the spacers, wherein the elastomers are configured to be compressed by the corresponding spacers in a cell-aligning process of the first base substrate and the second base substrate to buffer pressure applied to layers on the second base substrate.2. The OLED display panel according to claim 1 , wherein the elastomers have inverted trapezoidal cross sections in a direction from the second base substrate to the first base substrate before the elastomers are compressed by the corresponding spacers; andthe OLED display panel further comprises: a cathode layer on a layer where the elastomers are located and cut off by the elastomers.3. The OLED display panel according to claim 2 , further comprising: an ...

Color stable organic light emitting diode stack

The present invention relates to OLED devices and stacks for OLED devices that include a symmetric emissive-layer architecture. In one embodiment, the present invention relates to an emissive stack having three layers, wherein the top and bottom layers emit light in the same or similar color region while the middle layer emits light in a different color region than the other two layers. In such an embodiment, the three layers are in contact with each other with no other layers in between. The symmetric emissive-layer architecture of the present invention can be used to improve the color stability of OLED devices. 1. An organic light emitting device , comprising:a first electrode;a first emissive stack disposed over the first electrode; anda second electrode disposed over the first emissive stack;wherein the first emissive stack consists of N emissive layers in contact and in sequence from the first electrode side;wherein N is an integer of at least 3;wherein the first emissive layer in the first emissive stack nearest the first electrode and the Nth emissive layer in the first emissive stack nearest the second electrode emit light in the same color region,wherein at least one emissive layer in the first emissive stack other than the first and the Nth emissive layers emits light in a different color region than the first and the Nth emissive layers, andwherein at least one of the emissive layers between the first emissive layer and the Nth emissive layer has a thickness that is at least two times a thickness of the first emissive layer.2. The device of claim 1 , wherein the at least one emissive layer between the first emissive layer and the Nth emissive layer has a thickness that is at least three times the thickness of the first emissive layer.3. The device of claim 1 , wherein the at least one emissive layer between the first emissive layer and the Nth emissive layer has a thickness that is at least five times the thickness of the first emissive layer.4. The ...

ORGANIC LIGHT EMITTING DEVICE

A light emitting device including a first electrode, a light emitting portion on the first electrode, the light emitting portion including a plurality of light emitting units and at least one interconnecting layer between ones of the light emitting units that are adjacent to each other, and a second electrode on the light emitting portion. The at least one interconnecting layer includes a p-type charge generation layer doped with a p-type dopant and an n-type charge generation layer doped with an n-type dopant. At least one of the p-type charge generation layer and the n-type charge generation layer has a concentration gradient of the p-type dopant or the n-type dopant. 1. A light emitting device , comprising:a first electrode;a light emitting portion on the first electrode, the light emitting portion including a plurality of light emitting units and at least one interconnecting layer between ones of the light emitting units that are adjacent to each other; anda second electrode on the light emitting portion,wherein the interconnecting layer includes a p-type charge generation layer doped with a p-type dopant and an n-type charge generation layer doped with an n-type dopant, andat least one of the p-type charge generation layer and the n-type charge generation layer has a concentration gradient of the p-type dopant or the n-type dopant.2. The light emitting device as claimed in claim 1 , wherein:in the p-type charge generation layer, the concentration of the p-type dopant is highest at an interface between the p-type charge generation layer and the n-type charge generation layer, and the concentration of the p-type dopant decreases as a distance from the interface increases.3. The light emitting device as claimed in claim 1 , wherein:in the n-type charge generation layer, the concentration of the n-type dopant is lowest at an interface between the p-type charge generation layer and the n-type charge generation layer, and the concentration of the n-type dopant ...

Light-emitting element, light-emitting device, electronic device, and lighting device

An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

DISPLAY DEVICE

A display device comprises a pixel electrode including a first subpixel electrode and a second subpixel electrode arranged to be spaced apart from each other within at least one subpixel of a plurality of subpixels over a substrate, a driving transistor driving the one subpixel, and a connection electrode structure electrically connecting at least one subpixel of the first subpixel electrode and the second subpixel electrode of the pixel electrode with the driving transistor. 1. A display device comprising:a pixel electrode including a first subpixel electrode and a second subpixel electrode that are spaced apart from each other within at least one subpixel of a plurality of subpixels over a substrate;a driving transistor driving the at least one subpixel; anda connection electrode structure electrically connecting at least one of the first subpixel electrode and the second subpixel electrode of the pixel electrode with the driving transistor.2. The display device of claim 1 , wherein the connection electrode structure includes:a first connection electrode extended from a first end of the first subpixel electrode to a first direction which is perpendicular to a direction from the first subpixel electrode to the second subpixel electrode;a second connection electrode extended from a first end of the second subpixel electrode to the first direction;a third connection electrode electrically connected to the driving transistor and extended to the first direction; anda fourth connection electrode having a first end contacted with the first connection electrode and a second end contacted with the second connection electrode, contacted with the third connection electrode between the first end and the second end, and arranged in and contacted with a layer different from at least one of the first connection electrode, the second connection electrode and the third connection electrodes.3. The display device of claim 2 , wherein at least one of the first subpixel electrode and ...

LIGHT EMITTING DEVICE INCLUDING TANDEM STRUCTURE

A light emitting device comprising: a pair of electrodes; two or more light emitting elements disposed between the electrodes in a stacked arrangement, wherein a light emitting element comprises a layer comprising an emissive material, and a charge generation element disposed between adjacent light emitting elements in the stacked arrangement, the charge generation element comprising a first layer comprising an inorganic n-type semiconductor material, and a second layer comprising a hole injection material. A charge generation is also disclosed. 1. A light emitting device comprising:a pair of electrodes;two or more light emitting elements disposed between the electrodes in a stacked arrangement, wherein each of the two or more light emitting elements comprises a layer comprising an emissive material, and wherein the emissive material included in each of the two or more light emitting elements comprises quantum dots; anda charge generation element disposed between adjacent light emitting elements in the stacked arrangement, the charge generation element comprising a first layer comprising nanoparticles of an inorganic n-type semiconductor material and a second layer comprising a hole injection material, where the nanoparticles of the inorganic n-type semiconductor material are in direct contact with at least one layer of the emissive material.2. The light emitting device in accordance with wherein the light emitting device is encapsulated.3. The light emitting device in accordance with wherein the quantum dots included in the at least one of the light emitting elements have a monodisperse size distribution.4. The light emitting device in accordance with wherein at least one of the other light emitting elements includes an emissive material comprising an organic electroluminescent material.5. The light emitting device in accordance with wherein the emissive material included in each of the light emitting elements comprises quantum dots with a monodisperse size ...

ORGANIC LIGHT EMITTING DIODE AND DISPLAY DEVICE THEREOF

The present application discloses an organic light emitting diode comprising a cathode; an anode; a plurality of light emitting layers connected in series between the cathode and the anode; and a charge generation layer between at least one pair of adjacent light emitting layers. At least one light emitting layer comprises a host layer having charge transport property. 1. An organic light emitting diode , comprising:a cathode;an anode;a plurality of light emitting layers connected in series between the cathode and the anode; anda charge generation layer between at least one pair of adjacent light emitting layers;wherein at least one light emitting layer comprises a host layer having charge transport property.2. The organic light emitting diode of claim 1 , wherein the charge generation layer is adjacent to a hole injection layer of a neighboring light emitting layer.3. The organic light emitting diode of claim 1 , wherein a majority of the host has a charge mobility rate larger than 10cm/ Vs.4. The organic light emitting diode of claim 1 , wherein the host layer comprises an N-type host.5. The organic light emitting diode of claim 4 , wherein the at least one light emitting layer further comprises a hole transport layer on a side of the host layer distal to the cathode.6. The organic light emitting diode of claim 4 , wherein the host layer is in direct contact with the cathode.7. The organic light emitting diode of claim 4 , wherein the host layer is in direct contact with the charge generation layer.8. The organic light emitting diode of claim 4 , wherein the N-type host has electron transport property claim 4 , and comprises one or more compounds selected from a group consisting of oxazole derivatives and dendrimers thereof claim 4 , metal chelates claim 4 , azole compounds claim 4 , quinoline derivatives claim 4 , quinoxaline derivatives claim 4 , di-aza anthracene derivatives claim 4 , phenanthroline claim 4 , heterocyclic silicon compounds claim 4 , and ...

ORGANIC LIGHT-EMITTING DEVICE

An organic light-emitting device including: a first electrode; a second electrode facing the first electrode; a first emission unit and a second emission unit between the first electrode and the second electrode; and a first charge generation layer between the first emission unit and the second emission unit; wherein the first emission unit includes a first emission layer and a first inorganic buffer layer, and the second emission unit includes a second emission layer and a second inorganic buffer layer. 1. An organic light-emitting device comprising:a first electrode;a second electrode facing the first electrode;a first emission unit and a second emission unit between the first electrode and the second electrode; anda first charge generation layer between the first emission unit and the second emission unit,wherein the first emission unit comprises a first emission layer and a first inorganic buffer layer, andthe second emission unit comprises a second emission layer and a second inorganic buffer layer.2. The organic light-emitting device of claim 1 , wherein:the first emission unit further comprises a first hole injection layer between the first emission layer and the first electrode, and the first inorganic buffer layer is between the first emission layer and the first hole injection layer, andthe second emission unit further comprises a second hole injection layer between the second emission layer and the first charge generation layer, and the second inorganic buffer layer is between the second emission layer and the second hole injection layer.3. The organic light-emitting device of claim 2 , wherein:the first inorganic buffer layer is directly in contact with the first emission layer, andthe second inorganic buffer layer is directly in contact with the second emission layer.4. The organic light-emitting device of claim 1 , wherein the first inorganic buffer layer and the second inorganic buffer layer each comprise a metal halide.5. The organic light-emitting ...

THREE STACK HYBRID WHITE OLED FOR ENHANCED EFFICIENCY AND LIFETIME

OLEDs containing a stacked hybrid architecture including a phosphorescent organic emissive unit and two fluorescent organic emissive units are disclosed. The stacked hybrid architecture includes a plurality of electrodes and a hybrid emissive stacked disposed between at least two of the electrodes. The stack contains at least three emissive units and at least two charge generation layers. At least one of the three emissive units is a phosphorescent organic emissive unit and at least two of the three emissive units are fluorescent organic emissive units. More specifically, the two fluorescent organic emissive units may be blue organic emissive units that emit light from the same or different color regions. 1. A device comprising: a first electrode;a second electrode; anda hybrid emissive stack disposed between the first electrode and the second electrode, the stack comprising at least three emissive units and at least two charge generation layers, wherein:a first emissive unit of the at least three emissive units is disposed over the first electrode;a first charge generation layer of the at least two charge generation layers is disposed over the first emissive unit;a second emissive unit of the at least three emissive units is disposed over the first charge generation layer;a second charge generation layer of the at least two charge generation layers is disposed over the second emissive unit; anda third emissive unit of the at least three emissive units is disposed over the second charge generation layer,wherein the second emissive unit is a phosphorescent organic emissive unit, andwherein the first emissive unit and the third emissive unit are fluorescent organic emissive units.2. The device of claim 1 , wherein the phosphorescent organic emissive unit is selected from the group consisting of: a red organic emissive unit claim 1 , a green organic emissive unit claim 1 , and a yellow organic emissive unit.3. The device of claim 1 , wherein the first emissive unit and ...

LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

Emission efficiency of a light-emitting element is improved. The light-emitting element has a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer includes a fluorescent material and a host material. The second light-emitting layer includes a phosphorescent material, a first organic compound, and a second organic compound. An emission spectrum of the second light-emitting layer has a peak in a yellow wavelength region. The first organic compound and the second organic compound form an exciplex. 1. A light-emitting device comprising:an anode;a first light-emitting layer;a second light-emitting layer; anda cathode in this order,wherein the first light-emitting layer is not in contact with the second light-emitting layer,wherein a peak of emission spectrum of the first light-emitting layer is in a wavelength region of greater than or equal to 420 nm and less than or equal to 480 nm,wherein a peak of emission spectrum of the second light-emitting layer is in a wavelength region of greater than or equal to 550 nm and less than or equal to 590 nm,wherein the first light-emitting layer comprises a fluorescent material and a host material,wherein the second light-emitting layer comprises a phosphorescent material, a first organic compound, and a second organic compound,wherein the first organic compound and the second organic compound are configured to form an exciplex, andwherein an emission peak of the exciplex overlaps with an absorption band on a longest wavelength side of the phosphorescent material.2. The light-emitting device according to claim 1 ,wherein a lowest triplet excited level of the host material is lower than a lowest triplet excited level of the fluorescent material.3. The light-emitting device according to claim 1 , further comprising a color filter claim 1 ,wherein the anode is positioned under the cathode with the first ...

LIGHT-EMITTING DEVICE

A light-emitting device is provided. The light-emitting device includes: a plurality of first electrodes positioned on a first sub-pixel, a second sub-pixel, and a third sub-pixel, respectively; a second electrode facing the plurality of first electrodes; a first emission layer on the first sub-pixel to emit a first color light; a second emission layer on the second sub-pixel to emit a second color light; a first layer integrated with the first sub-pixel, the second sub-pixel, and the third sub-pixel; a first auxiliary layer between the first layer and the first emission layer; and a first interlayer between the first auxiliary layer and the first emission layer. The absolute value of the highest occupied molecular orbital (HOMO) energy level of the first interlayer is greater than the absolute value of the HOMO energy level of the first auxiliary layer, and is smaller than the absolute value of the HOMO energy level of the first emission layer. The absolute value of the lowest unoccupied molecular orbital (LUMO) energy level of the first interlayer is greater than that of a LUMO energy level of the first auxiliary layer, and is smaller than the absolute value of the LUMO energy level of the first emission layer. 1. A light-emitting device comprising:a plurality of first electrodes positioned on a first sub-pixel, a second sub-pixel, and a third sub-pixel, respectively;a second electrode facing the plurality of first electrodes;a first emission layer on the first sub-pixel to emit a first color light;a second emission layer on the second sub-pixel to emit a second color light;a first layer integrated with the first sub-pixel, the second sub-pixel, and the third sub-pixel;a first auxiliary layer between the first layer and the first emission layer; anda first interlayer between the first auxiliary layer and the first emission layer,wherein an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first interlayer is greater than an absolute ...

METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DIODE DISPLAY

A manufacturing method of an organic light emitting diode display is disclosed. In one aspect, the method includes forming a thin film transistor and a first electrode over a substrate and forming a first organic emission layer over the first electrode. The method further includes forming a second organic emission layer over the first organic emission layer, applying heat to the first and second organic emission layers and forming a second electrode over the second organic emission layer. 1. A method of manufacturing an organic light emitting diode display , comprising:forming a thin film transistor and a first electrode over a substrate;forming a first organic emission layer over the first electrode;forming a second organic emission layer over the first organic emission layer;applying heat to the first and second organic emission layers; andforming a second electrode over the second organic emission layer.2. The method of claim 1 , wherein the first and second emission layers are heated at about 90 degrees to about 130 degrees.3. The method of claim 2 , wherein the first and second emission layers are heated at about 100 degrees to about 120 degrees.4. The method of claim 2 , wherein the first and second emission layers are heated for about 8 minutes to about 12 minutes.5. The method of claim 4 , wherein the first and second emission layers are heated by a coil heater.6. The method of claim 2 , wherein the first and second emission layers are heated for about 1 minute to about 2 minutes.7. The method of claim 6 , wherein the first and second emission layers are heated by an infrared lamp.8. The method of claim 1 , wherein claim 1 , before heating the first and second organic emission layers claim 1 , a heating unit heating the first and second organic emission layers is positioned to be separated from an upper surface of the second organic emission layer by a predetermined distance.9. The method of claim 8 , wherein the heating unit is separated from the second ...

Light-Emitting Device, Electronic Device, and Lighting Device

A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission.

WHITE ORGANIC LIGHT EMITTING DEVICE

Provided is a white organic light emitting device which can improve abnormal light emission and efficiency and reliability of the device. 129-. (canceled)30. A white organic light emitting device , comprising:a first light emitting unit between a first electrode and a second electrode;a second light emitting unit on the first light emitting unit;a third light emitting unit on the second light emitting unit;a first charge generation layer between the first light emitting unit and the second light emitting unit; anda second charge generation layer between the second light emitting unit and the third light emitting unit,wherein a volume of a metal in each of the first charge generation layer and the second charge generation layer is 0.3% to less than 0.4% of the total volume of the first charge generation layer and the second charge generation layer.31. The white organic light emitting device of claim 30 , wherein the first charge generation layer is an N-type charge generation layer claim 30 , and the metal is in the N-type charge generation layer.32. The white organic light emitting device of claim 30 , wherein the first charge generation layer and the second charge generation layer are N-type charge generation layers claim 30 , and the metal is in the N-type charge generation layers.33. The white organic light emitting device of claim 32 , wherein the N-type charge generation layer has a thickness of 100 Å to 300 Å.34. The white organic light emitting device of claim 32 , wherein each of the first charge generation layer and the second charge generation layer further includes a p-type charge generation layer.35. The white organic light emitting device of claim 34 , wherein the P-type charge generation layer has a thickness of 50 Å to 200 Å.36. The white organic light emitting device of claim 30 , wherein the metal is one among lithium (Li) claim 30 , sodium (Na) claim 30 , potassium (K) claim 30 , cesium (Cs) claim 30 , magnesium (Mg) claim 30 , strontium (Sr) claim ...

Light-Emitting Element, Light-Emitting Device, and Lighting Device

Disclosed is a light-emitting element with a microcavity structure which is capable of amplifying a plurality of wavelengths to give emission of a desired color. The light-emitting element includes a pair of electrodes and an EL layer having a light-emitting substance interposed between the pair of electrodes. One of the pair of electrodes gives a reflective surface and the other electrode gives a semi-reflective surface. The light-emitting element is arranged so that the emission of the light-emitting substance covers at least two wavelengths λ and an optical path length L between the reflective surface and the semi-reflective surface satisfies an equation L=nλ/2 where n is an integer greater than or equal to 2. 1. (canceled)2. A light-emitting element comprising:a first substrate;a first metal electrode over the first substrate;a conductive metal oxide layer over and in contact with the first metal electrode, the conductive metal oxide layer comprising indium and tin;a first light-emitting layer over the conductive metal oxide layer;a second light-emitting layer over the first light-emitting layer; anda second metal electrode over the second light-emitting layer,wherein the first light-emitting layer and the second light-emitting layer are provided between the first metal electrode and the second metal electrode,wherein the first metal electrode is configured to function as an anode,wherein the first light-emitting layer and the second light-emitting layer are different in emission color from each other, andwherein an optical path length L between a bottom surface of the conductive metal oxide layer and a bottom surface of the second metal electrode is between 650 nm and 1500 nm.3. The light-emitting element according to claim 2 , further comprising a third light-emitting layer between the first light-emitting layer and the second light-emitting layer.4. The light-emitting element according to claim 3 , wherein the first light-emitting layer claim 3 , the second ...

OLED DEVICE HAVING ENHANCEMENT LAYER(S)

A method for improving the operation of an OLED includes maximizing on-radiative transfer of excited state energy from the OLED's organic emissive material to surface plasmon polaritons in an enhancement layer by providing the enhancement layer no more than a threshold distance away from the organic emissive layer; and emitting light into free space from the enhancement layer by scattering the energy from the surface plasmon polaritons through an outcoupling layer that is provided proximate to the enhancement layer but opposite from the organic emissive layer. 125.-. (canceled)26. A device comprising:a substrate;a first electrode;an organic emissive layer comprising an organic emissive material disposed over the electrode; wherein the enhancement layer is provided no more than a threshold distance away from the organic emissive layer,', 'wherein the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer, and the threshold distance is where the total non-radiative decay rate constant is equal to the total radiative decay rate constant; and, 'an enhancement layer, comprising a plasmonic material exhibiting surface plasmon resonance that non-radiatively couples to the organic emissive material and transfer excited state energy from the emissive material to non-radiative mode of surface plasmon polaritons, disposed over the organic emissive layer opposite from the first electrode,'}an outcoupling layer disposed over the enhancement layer, wherein the outcoupling layer scatters the energy from the surface plasmon polaritons as photons to free space.27. The device of claim 26 , further comprising an intervening layer disposed between the enhancement layer and the outcoupling layer claim 26 , wherein the intervening layer has a thickness between 1-10 nm and a refractive index from 0.1 to 4.0.28. The device of claim 26 , wherein the substrate is transparent and is ...

QUANTUM DOT LED AND OLED INTEGRATION FOR HIGH EFFICIENCY DISPLAYS

Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks. 1. A display comprising:a tandem hybrid pixel including an organic light emitting diode (OLED) subpixel and a quantum dot light emitting diode (QD-LED) subpixel;a common hole transport layer in the OLED subpixel and the QD-LED subpixel;a common quantum dot layer over the common hole transport layer in the QD-LED subpixel and in the OLED subpixel;a semi-common charge generation layer over the common quantum dot layer in the OLED subpixel;a first cathode over the common quantum dot layer in the QD-LED subpixel;a semi-common hole transport layer over the semi-common charge generation layer in the OLED subpixel;an organic emission layer over the semi-common hole transport layer in the OLED subpixel;a semi-common electron transport layer over the organic emission layer in the OLED subpixel; anda semi-common second cathode over the semi-common electron transport layer in the OLED subpixel.2. The display of claim 1 , further comprising:a common nanoparticle electron transport layer comprising metal-oxide nanoparticles over the common quantum dot layer in the QD-LED subpixel and in the OLED subpixel;wherein the semi-common charge generation layer is over the common nanoparticle electron transport layer in the OLED subpixel, and the first cathode is over the common nanoparticle electron transport layer in the QD-LED subpixel.3. The display of claim 1 , wherein the organic emission layer is over the common quantum dot layer in the OLED subpixel.4. The display of claim 1 , further comprising a first anode under the common hole transport layer in the QD-LED subpixel claim 1 , and a second anode under the common hole transport layer in the OLED subpixel.5. The display of claim 1 , wherein the organic emission layer comprises a phosphorescent ...

ORGANIC LIGHT EMITTING DEVICE

Disclosed is an organic light emitting device. The organic light emitting device includes a first emission unit configured to include a common blue emission material layer which is included in common in a plurality of pixels emitting lights having different wavelength ranges, a second emission unit configured to include a red emission material layer, a green emission material layer, and a blue emission material layer which respectively emit lights having different wavelength ranges, a charge generation layer disposed between the first emission unit and the second emission unit, a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit, and a second electrode formed as a semi-transmissive electrode, and configured to supply an electric charge having a second polarity to the first emission unit and the second emission unit. 1. An organic light emitting device in which a micro cavity is disposed between a first electrode and a second electrode , the organic light emitting device comprising:a first emission unit configured to include a common blue emission material layer which is included in common in a plurality of pixels emitting lights having different wavelength ranges;a second emission unit configured to include a red emission material layer, a green emission material layer, and a blue emission material layer which respectively emit lights having different wavelength ranges;a charge generation layer disposed between the first emission unit and the second emission unit;a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit; anda second electrode formed as a semi-transmissive electrode, and configured to supply an electric charge having a second polarity to the first emission unit and the second emission unit.2. The organic light ...

DISPLAY DEVICE

A display device may include a plurality of pixel electrodes arranged in a matrix along a first direction and a second direction perpendicular to each other. A plurality of light-emitting layers overlap with the respective plurality of pixel electrodes. A plurality of carrier generation layers are separated from one another. Each of the plurality of carrier generation layers continuously overlap with two of the plurality of light-emitting layers. The two are next to each other in a direction oblique to both the first direction and the second direction. A common electrode is opposed to the plurality of pixel electrodes. 110-. (canceled)11. A display device comprising:a plurality of pixel electrodes arranged in a matrix along a first direction and a second direction perpendicular to each other, and a third direction and a fourth direction being oblique to both the first direction and the second direction, and the third direction and the fourth direction being perpendicular to each other;an insulation layer including a portion on a periphery of each of the plurality of pixel electrodes, the insulation layer including openings to expose respective portions of the plurality of pixel electrodes;a plurality of light-emitting layers overlapping with the respective plurality of pixel electrodes, the plurality of light-emitting layers being separated from one another;a plurality of carrier generation layers on the insulation layer and on the plurality of pixel electrodes inside the openings, the plurality of carrier generation layers being separated from one another on the insulation layer, some of the plurality of carrier generation layers extending in the third direction, others of the plurality of carrier generation layers extending in the fourth direction, each of the plurality of carrier generation layers continuously overlapping with the second pair of light-emitting layers, wherein each of the plurality of carrier generation layers do not continuously overlap with the ...

DISPLAY PANEL AND ELECTRONIC DEVICE INCLUDING THE SAME

A display panel may include a light emitting panel, and a color conversion panel. The light emitting panel is configured to emit incident light including a first light and a second light, a luminescent peak wavelength of the first light may be greater than or equal to about 450 nm and less than or equal to about 480 nm and a luminescent peak wavelength of the second light may be greater than or equal to about 500 nm and less than or equal to about 580 nm. The color conversion panel includes a color conversion layer including a conversion region, and optionally, a partition wall defining each region of the color conversion panel. The color conversion region includes a first region corresponding to a red pixel, and the first region include a first composite including a matrix and a plurality of luminescent nanostructures dispersed in the matrix, and in the UV-Vis absorption spectrum, an absorbance ratio at a wavelength of 520 nm with respect to a wavelength of 350 nm may be greater than or equal to about 0.04:1. 1. A display panel comprising a light emitting panel , and a color conversion panel with a surface opposite a surface of the light emitting panel ,wherein the light emitting panel is configured to emit incident light including a first light with a luminescent peak wavelength greater than or equal to about 450 nm and less than or equal to about 480 nm, and a second light with a luminescent peak wavelength of greater than or equal to about 500 nm and less than or equal to about 580 nm,wherein the color conversion panel comprises a color conversion layer comprising a color conversion region, and optionally, a partition wall defining each region of the color conversion layer,wherein the color conversion region comprises a first region corresponding to a red pixel, and the first region comprises a first composite comprising a matrix and a plurality of luminescent nanostructures dispersed in the matrix,wherein a UV-Vis absorption spectrum of the plurality of the ...

DISPLAY PANEL, MANUFACTURING METHOD THEREOF AND DISPLAY DEVICE

The present application relates to a display panel, a manufacturing method thereof, and a display device. The display panel includes a base substrate, a plurality of pixel structures on the base substrate, and a color resist layer on a side of the plurality of pixel structures facing away the base substrate. The color resist layer includes a plurality of color resist blocks in one-to-one correspondence with the plurality of pixel structures. Light emitted from each of the plurality of pixel structures has the same color as the color resist block corresponding thereto. 1. A display panel , comprising:a base substrate;a plurality of pixel structures on the base substrate; anda color resist layer on a side of the plurality of pixel structures facing away the base substrate,wherein the color resist layer comprises a plurality of color resist blocks in one-to-one correspondence with the plurality of pixel structures, an orthogonal projection of each color resist block of the plurality of color resist blocks on the base substrate overlaps with an orthogonal projection of a corresponding pixel structure of the plurality of pixel structures on the base substrate, and the color resist layer further comprises a black matrix among the plurality of color resist blocks,wherein each pixel structure of the plurality of pixel structures comprises a first electrode, a plurality of electroluminescent structures and a second electrode arranged sequentially on the base substrate, the first electrode comprises a reflective conducting layer, the second electrode comprises a transflective conducting layer, and the pixel structure is configured to emit light with a color consistent with a color of a corresponding color resist block of the plurality of color resist blocks,wherein the first electrode further comprises a first conducting layer between the base substrate and the reflective conducting layer, and a second conducting layer on a side of the reflective conducting layer facing away ...

DISPLAY PANEL, MANUFACTURING METHOD THEREOF AND DISPLAY DEVICE

The present application relates to a display panel, a manufacturing method thereof, and a display device. The display panel includes a base substrate, a plurality of pixel structures on the base substrate, and a color resist layer on a side of the plurality of pixel structures facing away the base substrate. The color resist layer includes a plurality of color resist blocks in one-to-one correspondence with the plurality of pixel structures. Light emitted from each of the plurality of pixel structures has the same color as the color resist block corresponding thereto. 1. A display panel comprising:a base substrate;a plurality of pixel structures on the base substrate; anda color resist layer on a side of the plurality of pixel structures facing away the base substrate,wherein the color resist layer comprises a plurality of color resist blocks in one-to-one correspondence with the plurality of pixel structures, an orthogonal projection of each color resist block of the plurality of color resist blocks on the base substrate overlaps with an orthogonal projection of a corresponding pixel structure of the plurality of pixel structures on the base substrate,wherein the color resist layer further comprises a black matrix comprising a plurality of first black matrix blocks and a plurality of second black matrix blocks, each first black matrix block of the plurality of first black matrix blocks is between adjacent color resist blocks of a same color of the plurality of color resist blocks, each second black matrix block of the plurality of second black matrix blocks is between adjacent color resist blocks of different colors of the plurality of color resist blocks, the plurality of second black matrix blocks comprise a first type of second black matrix block and a second type of second black matrix block, an extension direction of the first type of second black matrix block is parallel to an extension direction of the plurality of first black matrix blocks, an extension ...

Organic light-emitting device

Provided is an organic light-emitting device including: an anode; a cathode facing the anode; two or more light-emitting layers provided between the anode and the cathode and each having a maximum light emission peak of ≤500 nm (≤500 nm emission layer); and a light-emitting layer provided between the two or more ≤500 nm emission layers, and having a maximum light emission peak at >500 nm (>500 nm emission layer), where a distance from the anode to the ≤500 nm emission layer most adjacent to the anode is 100 nm to 200 nm, the distance from the anode to the ≤500 nm emission most adjacent to the cathode is three to four times the distance from the anode to the ≤500 nm emission layer most adjacent to the anode, and an N-type charge generation layer including an alkali metal and a P-type charge generation layer including a material with an electron affinity of ≥4.8 eV are provided between each of the ≤500 nm emission layers and the emission >500 nm emission layer.

White Organic Light Emitting Element and Display Device Using the Same

Disclosed are a white organic light emitting element, which may uniformize the color coordinates of white regardless of a change in current density by changing the configuration of different kinds of light emitting layers contacting each other, and a display device using the same. 1. A white organic light emitting element comprising:a first electrode and a second electrode opposite each other; andat least one blue light emitting stack and a phosphorescent light emitting stack provided between the first electrode and the second electrode and separated from each other by a charge generation layer,wherein the phosphorescent light emitting stack comprises a hole transport layer, a red light emitting layer, a green light emitting layer, and an electron transport layer,wherein the red light emitting layer comprises a red dopant having a highest occupied molecular orbital (HOMO) energy level lower than or equal to a HOMO energy level of the hole transport layer, and a HOMO energy level of red hosts.2. The white organic light emitting element according to claim 1 , wherein the red hosts comprise electron transporting hosts.3. The white organic light emitting element according to claim 2 , wherein the electron transporting hosts are compounds having a triazine core.4. The white organic light emitting element according to claim 2 , wherein the electron transporting hosts in the red light emitting layer comprise a first-type host and a second-type host having different electron mobilities claim 2 ,wherein HOMO energy levels of the first-type host and the second-type host are lower than the HOMO energy level of the red dopant.5. The white organic light emitting element according to claim 1 , wherein the red dopant is a compound of thienopyrimidine and iridium.6. The white organic light emitting element according to claim 2 , wherein:a content of the red dopant in the red light emitting layer is 1 wt % to 10 wt %; anda content of a green dopant in the green light emitting layer ...

White Organic Light-Emitting Device and Display Device Using the Same

Disclosed herein are a white organic light-emitting device. The white organic light-emitting device enables an overall improvement in characteristics such as color temperature, efficiency, luminance, and service life, by changing the configuration of different types of emission layers in contact with each other, and a display device using the same. 1. A white organic light-emitting device comprising:a first electrode and a second electrode facing each other; anda plurality of emission stacks, separated from each other by charge generation layers interposed therebetween, the plurality of emission stacks between the first electrode and the second electrode, wherein:at least one of the emission stacks is a phosphorescent stack;the phosphorescent stack comprises a hole transport layer, and a first phosphorescent layer, a second phosphorescent layer, and a third phosphorescent layer sequentially provided on the hole transport layer to each emit light having a longer wavelength than blue light;the first phosphorescent layer comprises a first red dopant having a highest occupied molecular orbital (HOMO) energy level lower than or equal to a HOMO energy level of the hole transport layer;the second phosphorescent layer comprises a second red dopant having a HOMO energy level higher than the HOMO energy level of the first red dopant; andthe third phosphorescent layer comprises a third dopant having a luminescence peak at a shorter wavelength than the first red dopant and the second red dopant.2. The white organic light-emitting device according to claim 1 , wherein:the first phosphorescent layer comprises only an electron transport host; andeach of the second phosphorescent layer and the third phosphorescent layer comprises an electron transport host and a hole transport host.3. The white organic light-emitting device according to claim 1 , wherein:the phosphorescent stack further comprises a fourth phosphorescent layer on the third phosphorescent layer; andthe third ...

Organic Light Emitting Device

Disclosed is an organic light emitting device. The organic light emitting device includes a first emission unit configured to include a first red emission layer which emits red light, a first green emission layer which emits green light, and a first blue emission layer which emits blue light, a second emission unit configured to include a second red emission layer which emits red light, a second green emission layer which emits green light, and a second blue emission layer which emits blue light, a charge generation layer disposed between the first emission unit and the second emission unit, a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit, and a second electrode configured to supply an electric charge having a second polarity to the first and second emission units. 1. An organic light emitting device in which a micro cavity is disposed between a first electrode and a second electrode , the organic light emitting device comprising:a first emission unit configured to include a first red emission layer which emits red light, a first green emission layer which emits green light, and a first blue emission layer which emits blue light;a second emission unit configured to include a second red emission layer which emits red light, a second green emission layer which emits green light, and a second blue emission layer which emits blue light;a charge generation layer disposed between the first emission unit and the second emission unit;a first electrode formed as a reflective electrode, and configured to supply an electric charge having a first polarity to the first emission unit and the second emission unit; anda second electrode configured to supply an electric charge having a second polarity to the first emission unit and the second emission unit,wherein,a second electrode is a reflective electrode, andat least one selected from the first red ...

Multi-color light emitting diode and method for making same

A color light-emitting diode using a blue light component to produce red light and green light is disclosed. A blue-light emitting material is provided between a cathode layer and an anode layer for emitting the blue light component. A light re-emitting layer has a first material in a first diode section arranged to produce a red light component in response to the blue light component, and a second material in a second diode section arranged to produce a green light component in response to the blue light component. A transparent material in a third diode section allows part of the blue light component to transmit through. The anode layer is partitioned into three electrode portions separately located in the three diode sections, so that the red, green and blue light components in the diode sections can be separately controlled.

TOP-EMISSION TYPE MICRO CAVITY OLED DISPLAY DEVICE

The present invention provides a top-emission type micro cavity OLED display device, comprising: an array substrate; a reflection metal layer arranged on the array substrate; an anode modulation layer arranged on the reflection metal layer and made of a translucent conductive material; an organic light-emitting layer arranged on the anode modulation layer and not patterned; and a cathode layer arranged on the organic light-emitting layer. The top-emission type micro cavity OLED display device comprises a plurality of sub-pixels, and the anode modulation layer is divided into a plurality of anode modulation electrodes corresponding to the plurality of sub-pixels; the plurality of sub-pixels is at least classified into a first type sub-pixel, a second type sub-pixel and a third type sub-pixel; the first to third type sub-pixels display different colors, and the anode modulation electrodes corresponding to the first to third type sub-pixels have different thicknesses. 1. A top-emission type micro cavity OLED display device , comprising: an array substrate , a reflection metal layer arranged on the array substrate , an anode modulation layer arranged on the reflection metal layer , an organic light-emitting layer arranged on the anode modulation layer , and a cathode layer arranged on the organic light-emitting layer; wherein the organic light-emitting layer is not patterned , and the anode modulation layer is a translucent conductive material;wherein the top-emission type micro cavity OLED display device comprises a plurality of sub-pixels, and the anode modulation layer is divided into a plurality of anode modulation electrodes corresponding to the plurality of sub-pixels; the plurality of sub-pixels is at least classified into a first type sub-pixel, a second type sub-pixel and a third type sub-pixel; the first type sub-pixel, the second type sub-pixel, and the third type sub-pixel display different colors, and the anode modulation electrodes corresponding to the ...

ORGANIC LIGHT EMITTING DEVICE

An organic light emitting device includes a first light-emitting layer between an anode and a cathode, the first light-emitting layer including a first light-emitting part and a second light-emitting part, a second light-emitting layer spaced apart from the first light-emitting layer and including a third light-emitting part and a fourth light-emitting part, the third light-emitting part overlapping the first light-emitting part and not overlapping the second light-emitting part, and the fourth light-emitting part not overlapping either of the first light-emitting part and the second light-emitting part, an intermediate layer between the first light-emitting layer and the second light-emitting layer, a hole transport region to inject/transport a hole into the first light-emitting part, the second light-emitting part, and the fourth light-emitting part, and an electron transport region to inject/transport an electron into the second light-emitting part, the third light-emitting part, and the fourth light-emitting part. 1. An organic light emitting device , comprising:an anode on a reference plane, the reference plane being defined by a first direction and a second direction perpendicular to each other;a cathode spaced apart from the anode in a third direction normal to the reference plane;a first light-emitting layer between the anode and the cathode, the first light-emitting layer including a first light-emitting part and a second light-emitting part;a second light-emitting layer spaced apart from the first light-emitting layer in the third direction, the second light-emitting layer including a third light-emitting part and a fourth light-emitting part, the third light-emitting part overlapping the first light-emitting part and not overlapping the second light-emitting part, and the fourth light-emitting part not overlapping either of the first light-emitting part and the second light-emitting part;an intermediate layer between the first light-emitting layer and the ...

ORGANIC ELECTROLUMINESCENT ELEMENT

An organic electroluminescence device includes a pair of electrodes and an organic compound layer interposed therebetween. The organic compound layer includes a plurality of emitting layers at least including a first emitting layer and a second emitting layer. The first emitting layer contains a first host material and a fluorescent first luminescent material. The second emitting layer contains a second luminescent material that is different from the first luminescent material. A difference ΔST(H1) between singlet energy EgS(H1) of the first host material and an energy gap Eg(H1) at 77[K] of the first host material satisfies a specific relationship. One of the first luminescent material and the second luminescent material has a main peak wavelength from 400 nm to less than 500 nm and the other of the first luminescent material and the second luminescent material has a main peak wavelength from 500 nm to 700 nm. 1. An organic electroluminescence device comprising a pair of electrodes and an organic compound layer interposed between the pair of electrodes , whereinthe organic compound layer comprises a plurality of emitting layers at least comprising a first emitting layer and a second emitting layer,the first emitting layer comprises a first host material and a fluorescent first luminescent material,the second emitting layer comprises a second luminescent material that is different from the first luminescent material,{'sub': '77K', 'claim-text': {'br': None, 'i': ST', 'H', 'EgS', 'H', 'Eg', 'H, 'sub': '77K', 'Δ(1)=(1)−(1)<0.3 [eV] (1) and'}, 'a difference ΔST(H1) between singlet energy EgS(H1) of the first host material and an energy gap Eg(H1) at 77[K] of the first host material satisfies a formula (1) below,'}the first luminescent material has a main peak wavelength from 400 nm to less than 500 nm and the second luminescent material has a main peak wavelength from 500 nm to 700 nm, or alternatively,the first luminescent material has a main peak wavelength from 500 ...

ORGANIC ELECTROLUMINSESCENCE ELEMENT AND LIGHTING DEVICE

The disclosure relates to an organic electroluminescence element including an organic layer including multiple light-emitting layers. The light-emitting layers include a blue light-emitting layer including a blue light-emitting dopant. In a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when coordinate point A of the emission color at an early stage of use and coordinate point B of the emission color deteriorated by use are represented by (x, y) and (x, y) respectively, a relation of y≧yis satisfied. When amounts of changes in x and y values from coordinate point A to coordinate point B are represented by equations of Δx=x−Xand Δy=y−yrespectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceive change in emission color and lifetime can be prolonged 19-. (canceled)10. An organic electroluminescence element comprising an organic layer including multiple light-emitting layers ,the multiple light-emitting layers including a blue light-emitting layer including a blue light-emitting dopant,{'sub': 1', '1', '2', '2', '2', '1, 'in a case where emission color of the organic electroluminescence element operated at an operation temperature for a stable state is represented in a CIE1931 chromaticity coordinate system, when a coordinate point A of the emission color at an early stage of use is represented by (x, y), and a coordinate point B of the emission color deteriorated by use is represented by (x, y), the organic electroluminescence element satisfying a relation of y≧y;'}{'sub': 2', '1', '2', '1, 'when amounts of changes in an x value and a y value from the coordinate point A to the coordinate point B are represented by equations of Δx=x−xand Δy=y−yrespectively, the organic electroluminescence element satisfying a relation of Δy≧Δx;'}the organic electroluminescence element comprises a multi-unit structure in which ...

DISPLAY DEVICE

A display device comprising: pixel electrodes; an electroluminescent layer composed of layers laminated with each other, the multiple layers including a light-emitting layer and a charge generation layer; and a counter electrode. The multiple layers include a first layer composed of sections separated from each other and overlapping with the pixel electrodes, a second layer in contact with the first layer and continuous over the pixel electrodes, and a third layer interposed between the first layer and the second layer, the third layer being in contact with the first layer and the second layer over an adjacent pair of the sections. At least the charge generation layer is the first layer. The second layer is adapted to inject or transport carriers, either electrons or holes. The third layer is adapted to block the carriers injected or transported by the second layer. 1. A display device comprising:a plurality of pixel electrodes;an electroluminescent layer composed of multiple layers laminated with each other, the multiple layers including a light-emitting layer and a charge generation layer; anda counter electrode,whereinthe multiple layers include a first layer composed of some sections separated from each other and overlapping with the plurality of pixel electrodes, a second layer in contact with the first layer and continuous over the plurality of pixel electrodes, and a third layer interposed between the first layer and the second layer, the third layer being in contact with the first layer and the second layer over an adjacent pair of the sections,at least the charge generation layer is the first layer,the second layer is adapted to inject or transport carriers, either electrons or holes, andthe third layer is adapted to block the carriers injected or transported by the second layer.2. The display device according to claim 1 , wherein the third layer overlaps with respective ends of the adjacent pair of the sections.3. The display device according to claim 1 , ...

LIGHT-EMITTING ELEMENT, DISPLAY MODULE, LIGHTING MODULE, LIGHT-EMITTING DEVICE, DISPLAY DEVICE, ELECTRONIC APPLIANCE, AND LIGHTING DEVICE

An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective. 1. (canceled)2. A light-emitting element comprising:a pair of electrodes; andan EL layer between the pair of electrodes,wherein the EL layer comprises a first light-emitting layer, a second light-emitting layer, and a first layer between the first light-emitting layer and the second light-emitting layer,wherein an emission spectrum of the first light-emitting layer is in a shorter wavelength region than an emission spectrum of the second light-emitting layer,wherein the first light-emitting layer comprises a fluorescent substance and a host material,wherein the fluorescent substance is capable of emitting light in the first light-emitting layer,wherein the second light-emitting layer comprises a substance, a first organic compound and a second organic compound,wherein the substance is capable of converting triplet excitation energy into luminescence in the second light-emitting layer,wherein the first organic compound and the second organic compound are configured to form an exciplex,wherein the fluorescent substance comprises a pyrene skeleton,wherein the host material comprises a condensed ...

ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE

An organic light emitting display device is capable of substantially preventing the occurrence of color mixture and improve the color purity, the organic light emitting display device including: a substrate; a first electrode on the substrate; a pixel defining layer defining a first opening which exposes at least a portion of the first electrode; a first organic light emission layer on the first electrode; and a second electrode on the first organic light emission layer, wherein the pixel defining layer may include quantum dots. 1. An organic light emitting display device , comprising:a substrate;a first electrode on the substrate;a pixel defining layer defining a first opening that exposes at least a portion of the first electrode;a first organic light emission layer on the first electrode; anda second electrode on the first organic light emission layer, wherein the pixel defining layer includes quantum dots.2. The organic light emitting display device as claimed in claim 1 , wherein the quantum dots are carbon quantum dots.3. The organic light emitting display device as claimed in claim 1 , wherein:the pixel defining layer includes a first pixel defining layer and a second pixel defining layer, the first pixel defining layer and the second pixel defining layer defining the first opening together, andthe first pixel defining layer has a second opening.4. The organic light emitting display device as claimed in claim 3 , wherein at least a portion of the second pixel defining layer is at the second opening.5. The organic light emitting display device as claimed in claim 4 , wherein:the first pixel defining layer includes the quantum dots, andthe second pixel defining layer excludes the quantum dots.6. The organic light emitting display device as claimed in claim 5 , wherein the quantum dots are carbon quantum dots.7. The organic light emitting display device as claimed in claim 1 , further comprising at least one of a hole injection layer and a hole transport layer ...

LIGHT-EMITTING DEVICE

A light-emitting device includes: a plurality of first electrodes disposed according to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, respectively; a second electrode facing the plurality of first electrodes; a first emission layer disposed in the first sub-pixel and emitting first color light; a third emission layer disposed in the third sub-pixel and emitting third color light; a fourth emission layer disposed in the fourth sub-pixel and emitting near-infrared (NIR) light having a maximum emission wavelength of about 680 nm or more; and a first layer integrated with the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel. 1. A light-emitting device comprising:a plurality of first electrodes disposed according to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, respectively;a second electrode facing the plurality of first electrodes;a first emission layer disposed in the first sub-pixel and emitting first color light;a third emission layer disposed in the third sub-pixel and emitting third color light;a fourth emission layer disposed in the fourth sub-pixel and emitting near-infrared (NIR) light having a maximum emission wavelength of about 680 nm or more; anda first layer integrated with the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel.2. The light-emitting device of claim 1 , wherein:i) the first emission layer is disposed between the first electrode and the first layer, and the third emission layer and the fourth emission layer are disposed between the first layer and the second electrode,ii) the first emission layer and the third emission layer are disposed between the first electrode and the first layer, and the fourth emission layer is disposed between the first layer and the second electrode,iii) the first emission layer and the fourth emission layer are disposed between the first electrode and the first layer, and the ...