Organic light emitting display device

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 light emitting device and display panel using the same method, terminal, and server for implementing fast playout

An organic light emitting device includes an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode laminated in this order, wherein the hole injection layer comprises a mixture of an inorganic material comprising at the least of one of an alkali metal oxide, an alkaline earth metal oxide, a halogen compound of an alkali metal, a halogen compound of an alkaline earth metal, and an organic material comprising at least one of compounds represented by Formula 1: wherein R1, R2, R3, R4, R5 and R6 are each independently selected from a substituted or unsubstituted C6 to C30 aromatic group and a C5 to C29 heterocyclic group containing N, S, or O, wherein the substituent is selected from a C1 to C6 aliphatic group and a C6 to C12 aromatic group.

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× ...

White organic light emitting device

A white organic light emitting device including an anode and a cathode opposite to each other, a plurality of stacks disposed between the anode and the cathode, each of the stacks including a hole transport layer, a light emitting layer and an electron transport layer, and an n-type charge generation layer and a p-type charge generation layer disposed between different adjacent stacks, wherein the n-type charge generation layer includes a first organic host, and the p-type charge generation layer includes a second organic host having a LUMO energy level smaller than or equal to a LUMO energy level of the first organic host, and an inorganic dopant containing 1% to 20% by volume of a metal.

Tandem white organic light emitting device

Organic Light Emitting Display Device

Disclosed is an organic light emitting display device. The organic light emitting display device includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor, an organic emission layer, and a second electrode formed on the organic emission layer. The organic emission layer includes a first stack that includes a first emission layer formed on the first electrode to emit first color light, a second stack that includes a second emission layer formed on the first electrode to emit second color light, and a charge generation layer formed between the first and second stacks. 1. An organic light emitting display device , comprising:a substrate;a thin film transistor formed on the substrate;a first electrode formed on the thin film transistor;an organic emission layer comprising a first stack that comprises a first emission layer formed on the first electrode to emit first color light, a second stack that comprises a second emission layer formed on the first electrode to emit second color light, and a charge generation layer formed between the first and second stacks; anda second electrode formed on the organic emission layer,wherein,a first-color peak wavelength (first peak wavelength) of a photoluminescence (PL) spectrum determined depending on dopant characteristics of the first and second emission layers is disposed in a short-wavelength area compared to a first-color peak wavelength (second peak wavelength) of an emittance spectrum determined depending on optical characteristic of an organic light emitting device, anda second-color peak wavelength (third peak wavelength) of the PL spectrum is disposed in a short or long wavelength area compared to a second-color peak wavelength (fourth peak wavelength) of the emittance spectrum.2. The organic light emitting display device of claim 1 , wherein claim 1 ,a difference between the first-color peak wavelength (the first peak wavelength) of the PL spectrum and the ...

Tandem white organic light emitting device

A tandem white organic light emitting device having high efficiency and long lifespan by adjusting characteristics of a hole transport layer adjacent to a charge generation layer consisting of p-type and n-type charge generation layer is disclosed, the p-type charge generation layer is formed of organic materials only, and at least one organic material contained in the p-type charge generation layer has a LUMO level of 6.0 eV to 4.5 eV.

ORGANIC ELECTROLUMINESCENCE DEVICE

An organic electroluminescence device including an anode, a cathode and a light-emission layer. The light-emission layer includes a stack of a blue light-emission layer and a red/green light concurrent-emission sub-stack. Further, the red/green light concurrent-emission sub-stack includes a stack of a red light-emission layer and a green light-emission layer. The red light-emission layer contains a red host compound including an arylamino group-substituted spirobisfluorene compound. Further, the green light-emission layer contains a green host compound including a mixture between a first green host compound and a second green host compound. Also, the first green host compound includes a bis-carbazole based compound, and the second green host compound includes a carbazole-based compound. 2. The organic electroluminescence device of claim 1 , wherein a content ratio of the first green host compound to the second green host compound is in a range of from 3:7 to 7:3.3. The organic electroluminescence device of claim 1 , wherein a content ratio of the first green host compound to the second green host compound is 1:1.4. The organic electroluminescence device of claim 1 , wherein a maximum emission wavelength band of the red phosphorescent dopant compound is in a range of 610 nm to 640 nm claim 1 , andwherein a maximum emission wavelength band of the green phosphorescent dopant compound is in a range of 510 nm to 540 nm.6. The organic electroluminescence device of claim 1 , wherein claim 1 , in an electroluminescence spectrum of the device claim 1 , a ratio of a maximum peak intensity in a red wavelength band to a maximum peak intensity in a green wavelength band is smaller than 1.8.7. The organic electroluminescence device of claim 1 , wherein claim 1 , in an electroluminescence spectrum of the device claim 1 , a ratio of a maximum peak intensity in a red wavelength band to a maximum peak intensity in a green wavelength band is smaller than 1.5.8. The organic ...

Organic light emitting display device

An organic light emitting display device includes first and second electrodes facing each other on a substrate, a charge generation layer formed between the first and second electrodes, a first light emitting stack formed between the charge generation layer and the first electrode, and a second light emitting stack formed between the charge generation layer and the second electrode, wherein a hole injection layer of a light emitting stack to realize blue color of the first and second light emitting stacks is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5% to less than 10% of a dopant formed of a hole transporting material based on a volume of the hole injection layer.

Tandem White Organic Light Emitting Device

A tandem white organic light emitting device with improved efficiency, voltage and lifetime includes a first electrode and a second electrode opposing each other, a charge generation layer formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the charge generation layer, the first stack including a first light emitting layer emitting blue light, and a second stack disposed between the charge generation layer and the second electrode, the second stack including a second light emitting layer including one or more hosts doped with a phosphorescent dopant emitting light having a longer wavelength than blue light, wherein the charge generation layer includes an n-type charge generation layer doped with a metal and a p-type charge generation layer made of an organic material.

Organic light emitting display device

Disclosed is an organic light emitting display device. The organic light emitting display device includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor, an organic emission layer, and a second electrode formed on the organic emission layer. The organic emission layer includes a first stack that includes a first emission layer formed on the first electrode to emit first color light, a second stack that includes a second emission layer formed on the first electrode to emit second color light, and a charge generation layer formed between the first and second stacks.

Tandem white organic light emitting device

A tandem white organic light emitting device with improved efficiency, voltage and lifetime includes a first electrode and a second electrode opposing each other, a charge generation layer formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the charge generation layer, the first stack including a first light emitting layer emitting blue light, and a second stack disposed between the charge generation layer and the second electrode, the second stack including a second light emitting layer including one or more hosts doped with a phosphorescent dopant emitting light having a longer wavelength than blue light, wherein the charge generation layer includes an n-type charge generation layer doped with a metal and a p-type charge generation layer made of an organic material.

Organic light emitting display apparatus

An OLED apparatus that may include a reflection-anode, a transparent-cathode, and a plurality of stacks between the reflection-anode and the transparent-cathode, wherein, among the plurality of stacks, a thickness of the stack disposed relatively close to the transparent-cathode is larger than a thickness of the stack disposed relatively close to the reflection-anode so that it is possible to optimize a micro-cavity of light emitted from the plurality of stacks, thereby improving a light-emission efficiency and a color reproduction ratio and reducing a color change rate in accordance with a viewing angle.

White organic light emitting device

A white organic light emitting device which has high color temperature characteristics and no change in color coordinates according to luminance change, includes a first electrode and a second electrode opposite to each other on a substrate, a charge generation layer formed between the first electrode and the second electrode, a second stack including a second light emitting layer formed between the charge generation layer and the second electrode, and a first stack including a first light emitting layer formed between the first electrode and the charge generation layer, wherein the first emitting layer has low singlet-triplet exchange energy to change triplet excitons into a singlet state by triplet-triplet annihilation and a dopant concentration of the first light emitting layer is adjusted according to a luminance change curve of the second stack.

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device includes a first electrode and a second electrode on a substrate, the first electrode being opposite to the second electrode; and at least one emission part between the first electrode and the second electrode, the at least one emission part including at least one organic layer, wherein the at least one organic layer comprises a peak wavelength of electroluminescence (EL) spectrum (PWES) structure where a moving range of a peak wavelength of an EL spectrum emitted from the at least one emission part is set. 1. An organic light emitting display device comprising:a first electrode and a second electrode on a substrate, the first electrode being opposite to the second electrode; andat least one emission part between the first electrode and the second electrode, the at least one emission part including at least one organic layer,wherein the at least one organic layer comprises a peak wavelength of electroluminescence (EL) spectrum (PWES) structure where a moving range of a peak wavelength of an EL spectrum emitted from the at least one emission part is set.2. The organic light emitting display device of claim 1 , wherein the PWES structure has a range from −10 nm to +10 nm with respect to a front of the organic light emitting display device.3. The organic light emitting display device of claim 1 , wherein the PWES structure has a range from −10 nm to +10 nm at a ±60 degree position with respect to a front of the organic light emitting display device.4. The organic light emitting display device of claim 1 , wherein the PWES structure has a range of ±4 nm to ±8 nm at a front of the organic light emitting display device or a ±60 degree position with respect to the front of the organic light emitting display device.5. The organic light emitting display device of claim 1 , wherein a total thickness of the organic layer is within a range from −5% to +5% of a predetermined thickness.6. The organic light emitting display device of claim ...

White organic light emitting device

Disclosed white organic light emitting device includes an anode and a cathode opposing each other; a charge generation layer interposed between the anode and the cathode; a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer and a first light emitting layer emitting blue fluorescent light; and a second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer and a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and a hole mobility of the first hole transport layer is 5.0×10 −4 cm 2 /s·V to 9.9×10 −3 cm 2 /s·V.

White organic light emitting device

Discussed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device can include a first emission part between a first electrode and a second electrode and configured to include a first emission layer (EML), a second emission part on the first emission part and configured to include a second EML, and a third emission part on the second emission part and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs.

Organic light emitting display device

An organic light emitting display device includes first and second electrodes facing each other on a substrate, a charge generation layer formed between the first and second electrodes, a first light emitting stack formed between the charge generation layer and the first electrode, and a second light emitting stack formed between the charge generation layer and the second electrode, wherein a hole injection layer of a light emitting stack to realize blue color of the first and second light emitting stacks is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5% to less than 10% of a dopant formed of a hole transporting material based on a volume of the hole injection layer.

Organic light emitting device

An organic light emitting device includes a first emitting part on an anode, the first emitting part including a first emission layer and a first hole transport layer a second emitting part on the first emitting part, the second emitting part including a second emission layer and a second hole transport layer; a third emitting part on the second emitting part including a third emission layer and a third hole transport layer; and a cathode on the third emitting part. The third emitting part further includes a fourth emission layer to emit light having a same color as the third emission layer and includes a dopant and a mixed host of at least two hosts, and a fourth hole transport layer provided on the third hole transport layer while in contact with the third emission layer, and has a hole mobility lower than that of the third hole transport layer.

Organic light emitting diode

An organic light emitting diode includes: a first electrode; a first hole transporting layer on the first electrode; a first emitting material layer on the first hole transporting layer, the first emitting material layer including a first host with a first dopant, wherein an energy level of a lowest unoccupied molecular orbital of the first dopant is higher than an energy level of a lowest unoccupied molecular orbital of the first host; a first electron transporting layer on the first emitting material layer; and a second electrode on the first electron transporting layer, wherein an energy level of each of the first hole transporting layer and the first electron transporting layer is higher than an energy level of a triplet state exciton of the first emitting material layer.

Organic light emitting display device with first to third emission parts

Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a first charge generation layer and a second charge generation layer between the first emission part and the second emission part. The first emission part includes a first organic layer, and the second emission part includes a second organic layer. A first thickness includes the first emission part and the first charge generation layer, and a second thickness includes the second emission part and the second charge generation layer. The first thickness is equal to or greater than the second thickness.

White Organic Light Emitting Device

A white organic light emitting device which has high color temperature characteristics and no change in color coordinates according to luminance change, includes a first electrode and a second electrode opposite to each other on a substrate, a charge generation layer formed between the first electrode and the second electrode, a second stack including a second light emitting layer formed between the charge generation layer and the second electrode, and a first stack including a first light emitting layer formed between the first electrode and the charge generation layer, wherein the first emitting layer has low singlet-triplet exchange energy to change triplet excitons into a singlet state by triplet-triplet annihilation and a dopant concentration of the first light emitting layer is adjusted according to a luminance change curve of the second stack.

Tandem White Organic Light Emitting Device

A tandem white organic light emitting device having high efficiency and long lifespan by adjusting characteristics of a hole transport layer adjacent to a charge generation layer consisting of p-type and n-type charge generation layer is disclosed, the p-type charge generation layer is formed of organic materials only, and at least one organic material contained in the p-type charge generation layer has a LUMO level of −6.0 eV to −4.5 eV. 1. A tandem white organic light emitting device comprising:a first electrode and a second electrode opposite to each other;a charge generation layer comprising an n-type charge generation layer and a p-type charge generation layer stacked between the first electrode and the second electrode;a first stack disposed between the first electrode and the charge generation layer and comprising a first hole transport layer, a first light emitting layer emitting blue light, and a first electron transport layer; anda second stack disposed between the charge generation layer and the second electrode and comprising a second hole transport layer directly contacting the p-type charge generation layer and having a single layer structure, a second light emitting layer doped with a phosphorescent dopant to emit light with a longer wavelength than that of blue light, and a second electron transport layer,wherein the p-type charge generation layer is formed of organic materials only, and at least one organic material contained in the p-type charge generation layer has a LUMO level of −6.0 eV to −4.5 eV,wherein the second hole transport layer has a HOMO level different from the LUMO level of the at least one organic material contained in the p-type charge generation layer by 0.5 eV or less.2. The tandem white organic light emitting device according to claim 1 , wherein the p-type charge generation layer comprises:an organic dopant having a LUMO level of −6.0 eV to −4.5 eV, wherein the LUMO level is the same as a HOMO level of the second hole transport ...

Organic light emitting display device

An organic light emitting display device includes first and second electrodes facing each other on a substrate, at least one emission layer formed between the first and second electrodes, a hole transport layer formed between the first electrode and the emission layer, and an electron transport layer formed between the second electrode and the emission layer, wherein the emission layer includes a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant, and a second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant.

White organic light emitting device

A white organic light emitting device includes a first emission part between a first electrode and a second electrode, and configured to include a first emission layer, the first electrode being a reflective electrode, a second emission part on the first emission part, and configured to include a second emission layer, and a third emission part on the second emission part, and configured to include a third emission layer.

Organic light emitting display device

An organic light emitting display device includes a first electrode and a second electrode on a substrate, the first electrode being opposite to the second electrode; and at least one emission part between the first electrode and the second electrode, the at least one emission part including at least one organic layer, wherein the at least one organic layer comprises a peak wavelength of electroluminescence (EL) spectrum (PWES) structure where a moving range of a peak wavelength of an EL spectrum emitted from the at least one emission part is set.

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: wherein each of R 1 , R 2 , and R 3 are independently selected from hydrogen, heavy hydrogen, a C5-C7 aromatic cyclic and C1-C6 heterocyclic group.

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.

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.

Organic light emitting display device

Discussed is an organic light emitting display device for reducing a color defect or a color difference which occurs in the front or side of the organic light emitting display device. The organic light emitting display device can include a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, the organic layer including at least one emission part. The organic layer is configured for a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part to have a range from 10 nm less a predetermined peak wavelength to 10 nm more than the predetermined peak wavelength.

Organic light emitting display device

Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a first charge generation layer and a second charge generation layer between the first emission part and the second emission part. The first emission part includes a first organic layer, and the second emission part includes a second organic layer. A first thickness includes the first emission part and the first charge generation layer, and a second thickness includes the second emission part and the second charge generation layer. The first thickness is equal to or greater than the second thickness.

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.

White organic light emitting diode and display device using the same

A white organic light emitting diode (OLED) includes a first electrode and a second electrode facing each other; a first charge generation layer and a second charge generation layer between the first and second electrodes; a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer; a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; and a third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode.

White organic light emitting device

The white organic light emitting device for improved efficiencies includes an anode and a cathode opposing each other on a substrate, a charge generation layer between the anode and the cathode, a first stack and a second stack interposed between the anode and the charge generation layer, and between the charge generation layer and the cathode, respectively, wherein at least one of a first hole transport layer and a second hole transport layer has a triplet energy level higher than a triplet energy level of the light emitting layer adjacent thereto, and a difference between a triplet energy level and a singlet energy level of 0.01 eV to 0.6 eV.

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: wherein each of R1, R2, and R3are independently selected from hydrogen, heavy hydrogen, a C5-C7 aromatic cyclic and C1-C6 heterocyclic group.

ORGANIC LIGHT EMITTING DEVICE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME

An organic light emitting device containing a multilayer stack structure including n stacks between an anode and a cathode is described, wherein the respective stacks comprise a hole transport layer, a light emitting layer and an electron transport layer, an n-type charge generation layer and a p-type charge generation layer respectively provided between the different adjacent stacks, wherein the p-type charge generation layer comprises an indenofluorenedione derivative represented by Formula 1 or an imine derivative represented by Formula 2 or 3. 2. The organic light emitting device according to claim 1 , wherein the p-type charge generation layer further comprises a component of the hole transport layer most adjacent to the p-type charge generation layer as a dopant.3. The organic light emitting device according to claim 2 , wherein the component of the hole transport layer is present in an amount of 0.5% to 10% in the p-type charge generation layer.4. The organic light emitting device according to claim 1 , wherein the p-type charge generation layer has a thickness of 50 Å to 200 Å.5. The organic light emitting device according to claim 1 , wherein the thickness of the hole transport layer most adjacent to the p-type charge generation layer is 50 Å to 700 Å.6. The organic light emitting device according to claim 1 , wherein the hole transport layer most adjacent to the p-type charge generation layer has a triplet level of 2.5 eV or more.7. The organic light emitting device according to claim 1 , wherein a difference between a LUMO level of the p-type charge generation layer and a HOMO level of the hole transport layer most adjacent to the p-type charge generation layer is smaller than or equal to 0.3 eV.8. The organic light emitting device according to claim 3 , wherein the n stacks present between the anode and the cathode comprise three stacks claim 3 ,a light emitting layer of a first stack adjacent to the anode and a light emitting layer of a third stack ...

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.

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.

White Organic Light Emitting Device

Disclosed white organic light emitting device includes an anode and a cathode opposing each other; a charge generation layer interposed between the anode and the cathode; a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer and a first light emitting layer emitting blue fluorescent light; and a second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer and a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and a hole mobility of the first hole transport layer is 5.0×10cm/s·V to 9.9×10cm/s·V. 1. A white organic light emitting device comprising:an anode and a cathode opposing each other on a substrate;a charge generation layer interposed between the anode and the cathode;a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer, a first light emitting layer emitting blue fluorescent light and a first electron transport layer; anda second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer, a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, and a second electron transport layer,wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and{'sup': -4', '2', '-3', '2, 'a hole mobility of the first hole transport layer is 5.0×10cm/s·V to 9.9×10cm/s·V.'}2. The white organic light emitting device according to claim 1 , wherein the triplet energy level of the first hole transport layer is 2.4 eV or more.3. The white organic light emitting device according to claim 1 , ...

Organic Light Emitting Diode

An organic light emitting diode includes: a first electrode; a first hole transporting layer on the first electrode; a first emitting material layer on the first hole transporting layer, the first emitting material layer including a first host with a first dopant, wherein an energy level of a lowest unoccupied molecular orbital of the first dopant is higher than an energy level of a lowest unoccupied molecular orbital of the first host; a first electron transporting layer on the first emitting material layer; and a second electrode on the first electron transporting layer, wherein an energy level of each of the first hole transporting layer and the first electron transporting layer is higher than an energy level of a triplet state exciton of the first emitting material layer.

White Organic Light Emitting Device

The white organic light emitting device for improved efficiencies includes an anode and a cathode opposing each other on a substrate, a charge generation layer between the anode and the cathode, a first stack and a second stack interposed between the anode and the charge generation layer, and between the charge generation layer and the cathode, respectively, wherein at least one of a first hole transport layer and a second hole transport layer has a triplet energy level higher than a triplet energy level of the light emitting layer adjacent thereto, and a difference between a triplet energy level and a singlet energy level of 0.01 eV to 0.6 eV. 1. A white organic light emitting device comprising:an anode and a cathode opposing each other on a substrate;a charge generation layer between the anode and the cathode;a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer, a first light emitting layer emitting blue light and a first electron transport layer; anda second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer, a second light emitting layer formed by doping single host with a phosphorescent dopant, and a second electron transport layer,wherein at least one of the first hole transport layer and the second hole transport layer has a triplet energy level higher than a triplet energy level of the light emitting layer adjacent thereto, and a difference (ΔEst) between a triplet energy level and a singlet energy level of 0.01 eV to 0.6 eV.2. The white organic light emitting device according to claim 1 , wherein the second hole transport layer has a triplet energy level that is 0.01 eV to 0.4 eV higher than a triplet energy level of the second light emitting layer.3. The white organic light emitting device according to claim 2 , wherein the triplet energy level of the second hole transport layer is 2.6 eV or more.4. The ...

ORGANIC LIGHT EMITTING DEVICE AND DISPLAY PANEL USING THE SAME

An organic light emitting device includes an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode laminated in this order, wherein the hole injection layer comprises a mixture of an inorganic material comprising at the least of one of an alkali metal oxide, an alkaline earth metal oxide, a halogen compound of an alkali metal, a halogen compound of an alkaline earth metal, and an organic material comprising at least one of compounds represented by Formula 1: 2. The organic light emitting device according to claim 1 , wherein a mix ratio of the inorganic material to the organic material is about 10:1 to about 1:10.3. The organic light emitting device according to claim 1 , wherein the alkali metal oxide or the alkaline earth metal oxide is at least one selected from Li claim 1 , Na claim 1 , K claim 1 , Rb claim 1 , Cs claim 1 , Be claim 1 , Mg claim 1 , Ca claim 1 , Sr and Ba.4. The organic light emitting device according to claim 1 , wherein claim 1 , in the halogen compound of the alkaline metal or the halogen compound of alkali earth metal claim 1 , a central metal is at least one selected from Li claim 1 , Na claim 1 , K claim 1 , Rb claim 1 , Cs claim 1 , Be claim 1 , Mg claim 1 , Ca claim 1 , Sr and Ba claim 1 , and the halogen is at least one selected from F claim 1 , CI claim 1 , Br and I.5. The organic light emitting device according to claim 1 , wherein the substituent of the substituted Cto Caromatic group is at least one Cto Caliphatic group selected from methyl claim 1 , ethyl claim 1 , propyl claim 1 , butyl and hexyl claim 1 , and the substituted Cto Caromatic group is at least one selected from phenyl claim 1 , biphenyl claim 1 , naphthyl and terphenyl.6. The organic light emitting device according to claim 1 , wherein the unsubstituted Cto Caromatic group is at least one selected from phenyl claim 1 , biphenyl claim 1 , naphthyl claim 1 , terphenyl claim ...

Organic light emitting display device

Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a first charge generation layer and a second charge generation layer between the first emission part and the second emission part. The first emission part includes a first organic layer, and the second emission part includes a second organic layer. A first thickness includes the first emission part and the first charge generation layer, and a second thickness includes the second emission part and the second charge generation layer. The first thickness is equal to or greater than the second thickness.

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device includes first and second electrodes facing each other on a substrate, at least one emission layer formed between the first and second electrodes, a hole transport layer formed between the first electrode and the emission layer, and an electron transport layer formed between the second electrode and the emission layer, wherein the emission layer includes a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant, and a second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant. 1. An organic light emitting display device comprising:first and second electrodes facing each other on a substrate;at least one emission layer formed between the first and second electrodes;a hole transport layer formed between the first electrode and the emission layer; andan electron transport layer formed between the second electrode and the emission layer,wherein the emission layer includes:a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant; anda second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant.2. The device according to claim 1 , wherein the first emission mixed layer further includes a second hole-type host.3. The device according to claim 2 , wherein a difference between the Highest Occupied Molecular Orbital (HOMO) level of each of the first and second hole-type hosts and the HOMO level of the hole transport layer is ±0.5 eV or less.4. The device according to claim 3 , wherein the first and second hole-type hosts have a ...

WHITE ORGANIC LIGHT EMITTING DIODE AND DISPLAY DEVICE USING THE SAME

A white organic light emitting diode (OLED) includes a first electrode and a second electrode facing each other; a first charge generation layer and a second charge generation layer between the first and second electrodes; a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer; a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; and a third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode. 1. A white organic light emitting diode (OLED) comprising:a first electrode and a second electrode facing each other;a first charge generation layer and a second charge generation layer between the first and second electrodes;a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer;a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; anda third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode.2. The white OLED of claim 1 , wherein the first color is yellowish green or red-green emitted using a phosphorescent dopant material claim 1 , and the second color is blue emitted using a fluorescent material.3. The white OLED of claim 1 ...

Organic Light Emitting Display Apparatus

An OLED apparatus that may include a reflection-anode, a transparent-cathode, and a plurality of stacks between the reflection-anode and the transparent-cathode, wherein, among the plurality of stacks, a thickness of the stack disposed relatively close to the transparent-cathode is larger than a thickness of the stack disposed relatively close to the reflection-anode so that it is possible to optimize a micro-cavity of light emitted from the plurality of stacks, thereby improving a light-emission efficiency and a color reproduction ratio and reducing a color change rate in accordance with a viewing angle. 1. An organic light emitting display (OLED) apparatus comprising:a reflection-anode;a transparent-cathode; anda plurality of stacks between the reflection-anode and the transparent-cathode, each stack containing one or more functional layers related to organic light emissions,wherein, among the plurality of stacks, a thickness of the stack disposed relatively close to the transparent-cathode is larger than a thickness of the stack disposed relatively close to the reflection-anode.2. The OLED apparatus according to claim 1 , wherein the plurality of stacks include:a first stack on the reflection-anode;a first charge generation layer on the first stack, wherein the first charge generation layer includes a first N-type charge generation layer, and a first P-type charge generation layer;a second stack on the first charge generation layer;a second charge generation layer on the second stack, wherein the second charge generation layer includes a second N-type charge generation layer, and a second P-type charge generation layer; anda third stack on the second charge generation layer, {'br': None, 'i': T', 'T', 'T, '3>2>1.\u2003\u2003[Equation 1]'}, 'wherein, when T1 indicates a distance from an upper surface of the reflection-anode to an interface between the first N-type charge generation layer and the first P-type charge generation layer, T2 indicates a distance from ...

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 ...

Organic Light Emitting Display Device

An organic light emitting display device includes first and second electrodes facing each other on a substrate, a charge generation layer formed between the first and second electrodes, a first light emitting stack formed between the charge generation layer and the first electrode, and a second light emitting stack formed between the charge generation layer and the second electrode, wherein a hole injection layer of a light emitting stack to realize blue color of the first and second light emitting stacks is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5% to less than 10% of a dopant formed of a hole transporting material based on a volume of the hole injection layer. 1. An organic light emitting display device comprising:a first electrode and a second electrode facing each other on a substrate;a charge generation layer formed between the first electrode and the second electrode;a first light emitting stack formed between the charge generation layer and the first electrode; anda second light emitting stack formed between the charge generation layer and the second electrode,wherein one of the first and second light emitting stacks emits a blue light, andwherein a hole injection layer of one of the first and second light emitting stacks emitting blue light is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5 vol. % to less than 10 vol. % of a dopant that is a hole transporting material based on a volume of the hole injection layer.2. The organic light emitting display device according to claim 1 , wherein the dopant is the same material as that of a hole transport layer of any one of the first light emitting stack and the second light emitting stack.3. The organic light emitting display device according to claim 1 , wherein the dopant is a material having a hole mobility higher than an electron mobility claim 1 , the hole mobility from 5.0×10Vs/cmto 1.0×10Vs/cm.4. The organic light emitting display device according to ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

Discussed is an organic light emitting display device for reducing a color defect or a color difference which occurs in the front or side of the organic light emitting display device. The organic light emitting display device can include a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, the organic layer including at least one emission part. The organic layer is configured for a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part to have a range from 10 nm less a predetermined peak wavelength to 10 nm more than the predetermined peak wavelength. 1. An organic light emitting display device comprising:a first electrode and a second electrode; andan organic layer between the first electrode and the second electrode, the organic layer including at least one emission part,wherein the organic layer is configured so that a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part is within a range from 10 nm less than a predetermined peak wavelength to 10 nm more than the predetermined peak wavelength.2. The organic light emitting display device of claim 1 , wherein the at least one emission part comprises at least one emission layer claim 1 , the at least one emission layer being one of a red emission layer claim 1 , a green emission layer claim 1 , and a blue emission layer.3. The organic light emitting display device of claim 2 , wherein a peak wavelength of an EL spectrum of red is within a range of 600 nm to 650 nm.4. The organic light emitting display device of claim 2 , wherein a peak wavelength of an EL spectrum of green is within a range of 520 nm to 550 nm.5. The organic light emitting display device of claim 2 , wherein a peak wavelength of an EL spectrum of blue is within a range of 450 nm to 480 nm.6. The organic light ...

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;a first emission portion on the first electrode; anda second emission portion on the first emission portion,wherein the first emission portion or the second emission portion includes one among a green emitting layer and a yellow-green emitting layer and a red emitting layer to improve any one among green efficiency, red efficiency, and a color shift rate property.2. The organic light emitting display device of claim 1 , wherein the first emission portion includes the green emitting layer and the red emitting layer.3. The organic light emitting display device of claim 2 , wherein the second emission portion includes a dark blue emitting layer.4. The organic light emitting display device of claim 2 , wherein the green emitting layer is closer to the first electrode than the red emitting layer.5. The organic light emitting display device of claim 4 , further comprising organic layers between the first electrode and the second electrode claim 4 , wherein the organic layers have a thickness in the range of 200 nm to 230 nm to improve red efficiency.6. The organic light emitting display device of claim 4 , further comprising organic layers between the first electrode and the second electrode claim 4 , wherein the organic layers have a thickness in the range of 320 nm to 350 nm to improve the color shift rate property.7. The organic light emitting display device of claim 2 , wherein the red emitting layer is closer to the first electrode than the green emitting layer.8. The organic light emitting display device of claim 7 , further comprising organic layers between the first electrode and the second ...

WHITE ORGANIC LIGHT EMITTING DEVICE

Discussed is a white organic light emitting device including an anode and a cathode opposite to each other, a plurality of stacks disposed between the anode and the cathode, each of the stacks including a hole transport layer, a light emitting layer and an electron transport layer, and a charge generation layer disposed between different stacks, the charge generation layer including a single organic host having an electron transport property, and an n-type dopant and a p-type dopant. 1. A white organic light emitting device comprising:an anode and a cathode opposite to each other;a plurality of stacks disposed between the anode and the cathode, each of the stacks including a hole transport layer, a light emitting layer and an electron transport layer; anda charge generation layer disposed between different stacks, the charge generation layer including a single organic host having an electron transport property, an n-type dopant and a p-type dopant.2. The white organic light emitting device according to claim 1 , wherein the organic host has a lowest unoccupied molecular orbital (LUMO) energy level of −3.5 eV to −2.0 eV and a highest occupied molecular orbital (HOMO) energy level of −6.5 eV to −5.0 eV.3. The white organic light emitting device according to claim 2 , wherein the organic host has an electron mobility of 1.0×10V·s/cmto 5.0×10V·s/cm.4. The white organic light emitting device according to claim 1 , wherein the n-type dopant is any one of an alkali metal claim 1 , an alkaline earth metal claim 1 , an alkali metal compound and an alkaline earth metal compound.5. The white organic light emitting device according to claim 1 , wherein the n-type dopant serves as an electron donor and is an organic n-type dopant which forms a charge-transfer complex with the organic host.6. The white organic light emitting device according to claim 1 , wherein the p-type dopant serves as an electron acceptor and is an organic p-type dopant which forms a charge-transfer complex ...

White organic light emitting device

A white organic light emitting device including an anode and a cathode opposite to each other, a plurality of stacks disposed between the anode and the cathode, each of the stacks including a hole transport layer, a light emitting layer and an electron transport layer, and an n-type charge generation layer and a p-type charge generation layer disposed between different adjacent stacks, wherein the n-type charge generation layer includes a first organic host, and the p-type charge generation layer includes a second organic host having a LUMO energy level smaller than or equal to a LUMO energy level of the first organic host, and an inorganic dopant containing 1% to 20% by volume of a metal.

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:a first electrode on a substrate;a first emission portion on the first electrode;a second emission portion on the first emission portion; anda second electrode on the second emission portion, a first hole transporting layer on the first electrode;', 'a first emitting layer and a second emitting layer on the first hole transporting layer; and', 'a first electron transporting layer on the second emitting layer, and, 'wherein the first emission portion includes a second hole transporting layer on the first electron transporting layer;', 'a third emitting layer on the second hole transporting layer; and', 'a second electron transporting layer on the third emitting layer., 'wherein the second emission portion includes2. The organic light emitting display device of claim 1 , wherein the first emitting layer includes a green emitting layer or a yellow-green emitting layer claim 1 , the second emitting layer includes a red emitting layer claim 1 , and the third emitting layer includes a dark blue emitting layer or a blue emitting layer.3. The organic light emitting display device of claim 2 , wherein the first emitting layer is disposed in a range of 30 nm to 60 nm from the first electrode claim 2 , the second emitting layer is disposed in a range of 50 nm to 90 nm from the first electrode claim 2 , and the third emitting layer is disposed in a range of 120 nm to 160 nm from the first electrode.4. The organic light emitting display device of claim 2 , wherein a maximum wavelength of a PL peak of the first emitting layer includes 532 nm or 556 nm claim 2 , a maximum wavelength of a PL peak of the second emitting layer includes 620 nm claim 2 , and a maximum ...

White organic light emitting device

A white organic light emitting device includes a first emission part between a first electrode and a second electrode, and configured to include a first emission layer, the first electrode being a reflective electrode, a second emission part on the first emission part, and configured to include a second emission layer, and a third emission part on the second emission part, and configured to include a third emission layer.

WHITE ORGANIC LIGHT EMITTING DEVICE

Discussed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device can include a first emission part between a first electrode and a second electrode and configured to include a first emission layer (EML), a second emission part on the first emission part and configured to include a second EML, and a third emission part on the second emission part and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs. 1. A white organic light emitting device , comprising:a first emission part between a first electrode and a second electrode, and configured to include a first emission layer, the first electrode being formed of a transparent conductive material;a second emission part on the first emission part, and configured to include a second emission layer; anda third emission part on the second emission part, and configured to include a third emission layer,wherein two emission layers among the first emission layer, the second emission layer and the third emission layer include one among:a blue emission layer,a blue emission layer and a yellow-green emission layer,a blue emission layer and a red emission layer, anda blue emission layer and a green emission layer, andwherein a remaining one emission layer among the first emission layer, the second emission layer, and the third emission layer includes one among:a yellow-green emission layer,a yellow emission layer and a red emission layer,a red emission layer and a green emission layer, anda yellow-green emission layer and a red emission layer.2. The white organic light emitting device of claim 1 , wherein the first electrode is located within a range of 4 claim 1 ,500 Å to 6 claim 1 ,000 Å from the second electrode.3. The white organic light ...

WHITE ORGANIC LIGHT EMITTING DEVICE

Discussed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device can include a first emission part between a first electrode and a second electrode and configured to include a first emission layer (EML), a second emission part on the first emission part and configured to include a second EML, and a third emission part on the second emission part and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs. 1. A white organic light emitting device comprising:a first emission part between a first electrode and a second electrode, and configured to include a first emission layer (EML);a second emission part on the first emission part, and configured to include a second EML; anda third emission part on the second emission part, and configured to include a third EML,wherein the first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs.2. The white organic light emitting device of claim 1 , wherein the white organic light emitting device is a bottom emission type.3. The white organic light emitting device of claim 2 , wherein a position of the first electrode is within a range of 4 claim 2 ,500 Å to 6 claim 2 ,000 Å from the second electrode.4. The white organic light emitting device of claim 2 , wherein an emission position of the third EML is within a range of 200 Å to 800 Å from the second electrode.5. The white organic light emitting device of claim 2 , wherein an emission position of the second EML is within a range of 1 claim 2 ,800 Å to 2 claim 2 ,550 Å from the second electrode.6. The white organic light emitting device of ...

ORGANIC LIGHT EMITTING DEVICE

An organic light emitting device includes a first emitting part on an anode, the first emitting part including a first emission layer and a first hole transport layer a second emitting part on the first emitting part, the second emitting part including a second emission layer and a second hole transport layer; a third emitting part on the second emitting part including a third emission layer and a third hole transport layer; and a cathode on the third emitting part. The third emitting part further includes a fourth emission layer to emit light having a same color as the third emission layer and includes a dopant and a mixed host of at least two hosts, and a fourth hole transport layer provided on the third hole transport layer while in contact with the third emission layer, and has a hole mobility lower than that of the third hole transport layer. 1. An organic light emitting device , comprising:a first emitting part on an anode, the first emitting part including a first emission layer and a first hole transport layer;a second emitting part on the first emitting part, the second emitting part including a second emission layer and a second hole transport layer;a third emitting part on the second emitting part, the third emitting part including a third emission layer and a third hole transport layer; anda cathode on the third emitting part,wherein the third emitting part further includes a fourth emission layer which emits light whose color is the same as that of the third emission layer and is provided on the third emission layer, and a fourth hole transport layer which is provided on the third hole transport layer and is in contact with the third emission layer.2. The organic light emitting device according to claim 1 , wherein a hole mobility of the fourth hole transport layer is lower than a hole mobility of the third hole transport layer.3. The organic light emitting device according to claim 2 , wherein the hole mobility of the third hole transport layer is 5.0× ...

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;a first emission portion on the first electrode; anda second emission portion on the first emission portion,wherein at least one among the first emission portion and the second emission portion includes two emitting layers, and the first emission portion and the second emission portion have emission characteristics that exhibit three EL peaks,wherein the first emission portion includes a first hole transport layer and a first electron transport layer, andwherein the second emission portion includes a second hole transport layer and a second electron transport layer.2. The organic light emitting display device of claim 1 , wherein the first emission portion includes the two emitting layers claim 1 , and the second emission portion includes a single emitting layer.3. The organic light emitting display device of claim 2 , wherein the two emitting layers in the first emission portion includes a green emitting layer and a red emitting layer claim 2 , and the single emitting layer in the second emission portion includes a dark blue emitting layer.4. The organic light emitting display device of claim 3 , wherein the green emitting layer is disposed in a range of 30 nm to 60 nm from the first electrode claim 3 , the red emitting layer is disposed in a range of 50 nm to 90 nm from the first electrode claim 3 , and the dark blue emitting layer is disposed in a range of 120 nm to 160 nm from the first electrode.525. The organic light emitting display device of claim 3 , wherein the red emitting layer is disposed in a range of 20 nm to 50 nm from the first electrode claim 3 , the green emitting layer is ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

An organic light emitting display device includes first and second electrodes facing each other on a substrate, a charge generation layer formed between the first and second electrodes, a first light emitting stack formed between the charge generation layer and the first electrode, and a second light emitting stack formed between the charge generation layer and the second electrode, wherein a hole injection layer of a light emitting stack to realize blue color of the first and second light emitting stacks is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5% to less than 10% of a dopant formed of a hole transporting material based on a volume of the hole injection layer. 1. An organic light emitting display device comprising:a first electrode and a second electrode facing each other on a substrate;a charge generation layer formed between the first electrode and the second electrode;a first light emitting stack formed between the charge generation layer and the first electrode; anda second light emitting stack formed between the charge generation layer and the second electrode,wherein one of the first and second light emitting stacks emits a blue light, andwherein a hole injection layer of one of the first and second light emitting stacks emitting blue light is formed by doping a host formed of hexaazatriphenylene (HAT-CN) with 0.5 vol. % to less than 10 vol. % of a dopant that is a hole transporting material based on a volume of the hole injection layer.2. The organic light emitting display device according to claim 1 , wherein the dopant is the same material as that of a hole transport layer of any one of the first light emitting stack and the second light emitting stack.3. The organic light emitting display device according to claim 1 , wherein the dopant is a material having a hole mobility higher than an electron mobility claim 1 , the hole mobility from 5.0×10Vs/cmto 1.0×10Vs/cm.4. The organic light emitting display device according to ...

ORGANIC LIGHT EMITTING DISPLAY DEVICE

Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode, a second emission part on the first emission part, and a first charge generation layer and a second charge generation layer between the first emission part and the second emission part. The first emission part includes a first organic layer, and the second emission part includes a second organic layer. A first thickness includes the first emission part and the first charge generation layer, and a second thickness includes the second emission part and the second charge generation layer. The first thickness is equal to or greater than the second thickness. 129.-. (canceled)30. An organic light emitting display device comprising:a first emission part between a first electrode and a second electrode, the first emission part including a first organic layer;a second emission part on the first emission part, the second emission part including a second organic layer;a third emission part on the second emission part, the third emission part including a third organic layer;a first charge generation layer and a second charge generation layer between the first emission part and the second emission part; anda third charge generation layer and a fourth charge generation layer between the second emission part and the third emission part,whereina first thickness comprises the first emission part and the first charge generation layer,a second thickness comprises the second emission part and the second charge generation layer, andthe first thickness is equal to or greater than the second thickness.31. The organic light emitting display device of claim 30 , whereinthe second thickness further comprises the third charge generation layer, anda third thickness comprises the third emission part and the fourth charge generation layer.32. The organic light emitting display device of claim 31 , wherein the first ...

Organic Light Emitting Diode

Organic light emitting display device

Disclosed is an organic light emitting display device for reducing a color defect or a color difference which occurs in the front or side of the organic light emitting display device. The organic light emitting display device includes a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, the organic layer including at least one emission part. The organic layer is configured for a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part to have a range from 10nm less to 10nm more than a predetermined peak wavelength.

WHITE TANDEM ORGANIC LIGHT EMITTING DEVICE

Weiße Tandem-organische lichtemittierende Vorrichtung, aufweisend:eine erste Elektrode (110) und eine zweite Elektrode (190), die einander gegenüberliegen;eine zwischen der ersten Elektrode (110) und der zweiten Elektrode (190) gebildete ladungserzeugende Schicht (150);einen zwischen der ersten Elektrode (110) und der ladungserzeugenden Schicht (150) angeordneten ersten Stapel (1100), wobei der erste Stapel (1100) eine blaues Licht emittierende erste lichtemittierende Schicht (130) aufweist; undeinen zwischen der ladungserzeugenden Schicht (150) und der zweiten Elektrode (190) angeordneten zweiten Stapel (1200), wobei der zweite Stapel (1200) eine zweite lichtemittierende Schicht (170) 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 (150) eine mit einem Metall dotierte ladungserzeugende Schicht des N-Typs (151) und eine aus einem organischen Material hergestellte ladungserzeugende Schicht des P-Typs (152) aufweist,wobei das Metall Lithium ist,wobei eine Menge des in die ladungserzeugende Schicht des N-Typs (151) dotierten Metalls 2% bis 8% des Gesamtvolumens der ladungserzeugenden Schicht des N-Typs beträgt (151) und wobei eine Dicke der Metall-dotierten ladungserzeugenden Schicht des N-Typs (151) 10 nm bis 15 nm beträgt, undwobei der erste Stapel eine Lebensdauer von 150 h oder länger sicherstellt.

White light emitting device and light emitting display device including the same

A white light emitting device and a light emitting display device including the same, in which the relationship between the triplet energy levels of dopants of emission layers is appropriately adjusted so as to improve the efficiency of the white light emitting device and the light emitting display device, thereby increasing a color temperature and enabling rich color representation.

Organic electroluminescence device

White light emitting device and light emitting display device including the same

A white light emitting device and the light emitting display device including the same have an improved structure capable of preventing a color difference between regions and eliminating a difference in color characteristics between a low grayscale level and a high grayscale level.

白色有機発光素子

【課題】各発光スタックの間に備えられる電荷生成層に無機物質の共蒸着を適用し、高効率と共に低電圧を具現した白色有機発光素子を提供する。 【解決手段】互いに対向した正極と負極、前記正極と前記負極との間にそれぞれ正孔輸送層、発光層及び電子輸送層を含む複数のスタック、並びに前記複数のスタックの間に配置されたｎ型電荷生成層及びｐ型電荷生成層を含んで構成され、前記ｎ型電荷生成層は第１の有機物ホストを含み、前記ｐ型電荷生成層は、前記第１の有機物ホストのＬＵＭＯエネルギー準位より小さいかまたは同じＬＵＭＯエネルギー準位を有する第２の有機物ホストと、１体積％〜２０体積％の、金属を含む無機ドーパントとからなることを特徴とする白色有機発光素子を構成する。 【選択図】図２Ｂ

White organic light emitting device

Disclosed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device includes a first emission part (110) between a first electrode (102) and a second electrode (104) and configured to include a first emission layer (EML), a second emission part (120) on the first emission part and configured to include a second EML, and a third emission part (130) on the second emission part (120) and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs.

White organic light emitting device

Discussed is a white organic light emitting device for enhancing emission efficiency and panel efficiency. The white organic light emitting device can include a first emission part between a first electrode and a second electrode and configured to include a first emission layer (EML), a second emission part on the first emission part and configured to include a second EML, and a third emission part on the second emission part and configured to include a third EML. The first to third emission parts have an emission position of emitting layers (EPEL) structure in which the first to third emission parts have a maximum emission range in respective emission areas of the first to third EMLs.