Optical laminate comprising a twisted angle of a refractive index anisotropic layer having a twisted structure, image display device, and glass composite

Provided is an optical laminate, an image display device, and a glass composite which are capable of sufficiently shielding light emitted in a direction oblique to a normal direction of a film without occurrence of moire even in a case of being used in a combination with a high-definition image display device. The optical laminate includes, in order, at least a first light absorption anisotropic layer, a refractive index anisotropic layer formed of a one or more layers that contain a liquid crystal compound having a twisted structure, and a second light absorption anisotropic layer, in which the first light absorption anisotropic layer and the second light absorption anisotropic layer contain an anisotropic absorbing material and each have an absorption axis that is aligned at an angle of 60° to 90° with respect to a film surface.

Liquid crystal display device

The present invention is to provide a liquid crystal display device which is capable of suppressing reflected glare of a display screen on a windshield and the like, has excellent front contrast, and has excellent visibility of a display screen as viewed via polarized sunglasses. A liquid crystal display device includes, in order from a viewing side, a viewing side polarizer, a liquid crystal cell, a non-viewing side polarizer, and an anisotropic light absorption layer having an absorption axis in a thickness direction. The liquid crystal display device further includes at least one polarization control layer, in which the polarization control layer is arranged on a viewing side of the viewing side polarizer or on a non-viewing side of the non-viewing side polarizer.

Polarizing plate and liquid crystal display device

There is provided a polarizing plate including a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a synthetic polymer, and has a thickness of 30 μm or less, an elastic modulus in the TD direction of 2 GPa to 2.5 GPa, and a humidity dimensional change rate in a TD direction of 0.1% or less, and the second protective film has an evaluation value represented by the following Equation (2) of 7.0 to 11.0: Evaluation value=elastic modulus (GPa) of the second protective film in a TD direction/humidity dimensional change rate (%) of the second protective film in the TD direction×(thickness (μm) of the second protective film/thickness (μm) of the first protective film) 2 ×(30/thickness (μm) of the polarizer) 1/2 Equation (2).

Optical filter, optical device, and head-mounted display

Provided are an optical filter, an optical device, and a head-mounted display which have a high light transmittance in a front direction and a wide real field of view. The optical filter includes a first anisotropic absorption layer, a first retardation layer, and a second anisotropic absorption layer in this order, each of the first anisotropic absorption layer and the second anisotropic absorption layer contains a dichroic colorant, an absorption axis of the dichroic colorant is perpendicular to a main surface, and the first retardation layer has polar angle dependence of retardation that has asymmetry about a normal direction with respect to incident light hitting at least one incident surface including a normal of a layer surface of the first retardation layer.

Light guide element comprising a diffraction element having a cholesteric liquid crystal layer with a pitch gradient

A light guide element includes: a light guide plate; and a diffraction element that is disposed on a main surface of the light guide plate, in which the diffraction element includes a liquid crystal layer that is formed of a liquid crystal composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, a refractive index of the light guide plate is 1.70 or higher, and in a case where the refractive index of the light guide plate is represented by nd and a refractive index of the liquid crystal layer is represented by nk, nk−nd≥0 is satisfied.

Polarizing plate, circularly polarizing plate, and display device

The present invention provides a polarizing plate including a polarizer having a high transmittance, which can be suitably applied to a circularly polarizing plate with which a significant decrease in an antireflection ability is suppressed in a case where the circularly polarizing plate is disposed on a display element; a circularly polarizing plate; and a display device. The polarizing plate includes a polarizer and an adjacent layer in contact with the polarizer, in which a transmittance in the absorption axis direction of the polarizer is 4.0% or more, and an in-plane average refractive index of the adjacent layer satisfies a relationship of Formula (X), Formula (X): Refractive index in a transmission axis direction of the polarizer Подробнее

Polarizing plate, and method for manufacturing polarizing plate including bonding optical rotary layer to polarizer and adjusting storage elastic modulus of bonding layer

A method for manufacturing a polarizing plate having excellent appearance properties and including a polarizer, an optical rotatory layer, and a brightness enhancement film, a polarizing plate, and a liquid crystal display device including the polarizing plate, are described. The method includes forming an optical rotatory layer, which has a film thickness of 1 to 10 μm and rotates a polarization axis of linearly polarized light, on a temporary support to manufacture a temporary support with an optical rotatory layer; bonding the optical rotatory layer of the temporary support with an optical rotatory layer and polarizer through a curable adhesive layer, and curing the curable adhesive layer to form a first bonding layer having a storage elastic modulus of 2 to 1500 MPa; peeling off the temporary support from the laminate; and bonding the optical rotatory layer of the laminate and a brightness enhancement film through a second bonding layer.

Optical film, retardation film, polarizing plate, and liquid crystal display device

An optical film contains a cellulose ester and more than 30% by mass, relative to the cellulose ester, of a condensation product of at least one polyhydric alcohol having an average of 2.01 or more carbon atoms and at least one polybasic acid having an average of 4.10 or more carbon atoms, and at least one of the at least one polyhydric alcohol contains at least three carbon atoms bonded together without being interrupted by any other atom.

POLARIZING ELEMENT, CIRCULARLY POLARIZING PLATE, AND IMAGE DISPLAY DEVICE

An object of the present invention is to provide a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has the polarizing element. The polarizing element of an embodiment of the present invention has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and an average refractive index nat a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0. 1. A polarizing element comprising:an alignment film; andan anisotropic light-absorbing film formed using a dichroic substance,wherein a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, and{'sub': 'ave', 'an average refractive index nat a wavelength of 400 to 700 nm of the alignment film is 1.55 to 2.0.'}2. The polarizing element according to claim 1 ,wherein an in-plane refractive index anisotropy Δn at a wavelength of 550 nm of the alignment film is 0.10 or more.3. The polarizing element according to claim 2 ,wherein the refractive index anisotropy Δn is 0.20 or more.4. The polarizing element according to claim 1 ,{'sub': 'ave', 'wherein the average refractive index nis 1.55 to 1.80.'}5. The polarizing element according to claim 1 ,{'sub': '550', 'wherein an average refractive index nat a wavelength of 550 nm of the alignment film is 1.55 to 1.75.'}6. The polarizing element according to claim 1 ,{'sub': 450', '550, 'wherein a ratio of an average refractive index nat a wavelength of 450 nm of the alignment film to the average refractive index nat a wavelength of 550 nm of the alignment film is 1.0 or more.'}7. The polarizing element according to claim 1 ,{'sub': 550', '550, 'wherein in a case where a refractive index of the anisotropic light-absorbing film is defined as Nxand a refractive index of the alignment film is ...

POLARIZING PLATE, METHOD FOR MANUFACTURING POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE

A method for manufacturing a polarizing plate capable having excellent appearance properties and including a polarizer, an optical rotatory layer, and a brightness enhancement film, a polarizing plate, and a liquid crystal display device including the polarizing plate, are described. The method includes forming an optical rotatory layer, which has a film thickness of 10 μm or less and rotates a polarization axis of linearly polarized light, on a temporary support to manufacture a temporary support with an optical rotatory layer; bonding the optical rotatory layer of the temporary support with an optical rotatory layer and polarizer through a curable adhesive layer, and curing the curable adhesive layer to form a first bonding layer having a storage elastic modulus of 2 to 1500 MPa; peeling off the temporary support from the laminate; and bonding the optical rotatory layer of the laminate and a brightness enhancement film through a second bonding layer. 1. A method for manufacturing a polarizing plate comprising:Step 1 of forming an optical rotatory layer, which has a film thickness of 10 μm or less and rotates a polarization axis of linearly polarized light, on a temporary support to manufacture a temporary support with an optical rotatory layer;Step 2 of bonding the optical rotatory layer of the temporary support with an optical rotatory layer and a polarizer through a curable adhesive layer and then curing the curable adhesive layer to form a first bonding layer having a storage elastic modulus of 2 to 1500 MPa;Step 3 of peeling off the temporary support from a laminate obtained in Step 2; andStep 4 of bonding the optical rotatory layer of the laminate obtained in Step 3 and a brightness enhancement film through a second bonding layer.2. The method for manufacturing a polarizing plate according to claim 1 ,wherein the second bonding layer has a storage elastic modulus of 1 MPa or less.3. The method for manufacturing a polarizing plate according to claim 1 ,wherein ...

BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE

Provided are a backlight unit and a liquid crystal display device including the backlight unit, the backlight unit being capable of switching between viewing angles in the liquid crystal display device and having a configuration in which the brightness values of emitted light on the “+” side and the “−” side at a polar angle with respect to the normal line are symmetric to each other. The backlight unit includes: a light guide plate; a first light source that guides light into the light guide plate from a long side or a short side of the light guide plate; a second light source that guides light into the light guide plate from a side of the light guide plate different from that of the first light source; a first diffraction element that is provided on one main surface of the light guide plate and diffracts only light emitted from one of the first light source or the second light source; a second diffraction element that is provided on another main surface of the light guide plate and diffracts only light emitted from another one of the first light source or the second light source; and a reflection plate that is provided on a surface of the light guide plate opposite to a light emission surface. 1. A backlight unit comprising:a light guide plate that has a long side and a short side;a first light source that emits light such that the light is incident into the light guide plate from an edge surface of one of the long side or the short side of the light guide plate;a second light source that emits light such that the light is incident into the light guide plate from an edge surface of another one of the long side or the short side of the light guide plate different from that of the first light source;a first diffraction element that is provided on one main surface of the light guide plate and diffracts only light emitted from one of the first light source or the second light source;a second diffraction element that is provided on another main surface of the light ...

LAMINATE AND IMAGE DISPLAY DEVICE

An object of the present invention is to provide a laminate having excellent display performance and moisture and heat durability in a case of being used in an image display device, and an image display device including the laminate. The laminate of the present invention is a laminate including a light absorption anisotropic film, and a liquid crystal layer which is adjacent to the light absorption anisotropic film, in which the light absorption anisotropic film is a film formed of a composition containing a dichroic material, the liquid crystal layer is a layer which contains a liquid crystal compound aligned therein and has a thickness of 300 nm or less, and an absorption axis of the light absorption anisotropic film and a slow axis of the liquid crystal layer are parallel to each other. 1. A laminate comprising:a light absorption anisotropic film; anda liquid crystal layer which is adjacent to the light absorption anisotropic film,wherein the light absorption anisotropic film is a film formed of a composition containing a dichroic material,the liquid crystal layer is a layer which contains a liquid crystal compound is aligned therein and has a thickness of 300 nm or less, andan absorption axis of the light absorption anisotropic film and a slow axis of the liquid crystal layer are parallel to each other.2. The laminate according to claim 1 ,{'sub': '550', 'wherein an average refractive index nof the liquid crystal layer at a wavelength of 550 nm is 1.50 to 1.75.'}3. The laminate according to claim 1 ,wherein an in-plane refractive index anisotropy Δn of the liquid crystal layer at a wavelength of 550 nm is 0.03 or greater.4. The laminate according to claim 1 , further comprising:a transparent support; andan alignment film,wherein the transparent support, the alignment film, the light absorption anisotropic film, and the liquid crystal layer are provided in order.5. The laminate according to claim 1 , further comprising:a transparent support; andan alignment film, ...

Polarizing plate and liquid crystal display device

There is provided a polarizing plate including a first protective film, a polarizer, and a second protective film in this order, in which the first protective film is a film including a synthetic polymer, and has a thickness of 30 μm or less, an elastic modulus in the TD direction of 2 GPa to 2.5 GPa, and a humidity dimensional change rate in a TD direction of 0.1% or less, and the second protective film has an evaluation value represented by the following Equation (2) of 7.0 to 11.0: Evaluation value=elastic modulus (GPa) of the second protective film in a TD direction/humidity dimensional change rate (%) of the second protective film in the TD direction×(thickness (μm) of the second protective film/thickness (μm) of the first protective film) 2 ×(30/thickness (μm) of the polarizer) 1/2 Equation (2).

LAMINATE, OPTICAL DEVICE, AND DISPLAY DEVICE

An object of the present invention is to provide a laminate including a light absorption anisotropic layer, in which a decrease in a degree of polarization is suppressed even in a case where the laminate is simultaneously stretched in a plurality of directions, and an optical device and a display device, each using the laminate. The laminate of an embodiment of the present invention is a laminate having at least a resin substrate and a light absorption anisotropic layer, in which a tan δ peak temperature of the resin substrate is 170° C. or lower, the light absorption anisotropic layer includes a liquid crystalline compound and a dichroic substance, and an alignment degree of the dichroic substance is 0.95 or more. 1. A laminate comprising at least:a resin substrate; anda light absorption anisotropic layer,wherein a tan δ peak temperature of the resin substrate is 170° C. or lower,the light absorption anisotropic layer includes a liquid crystalline compound and a dichroic substance, andan alignment degree of the dichroic substance is 0.95 or more.2. The laminate according to claim 1 ,wherein the tan δ peak temperature of the resin substrate is 130° C. or lower.3. The laminate according to claim 1 ,wherein a storage elastic modulus of the resin substrate at the tan δ peak temperature is 100 kPa or less.4. The laminate according to claim 1 ,wherein the resin substrate, an adhesive layer, and the light absorption anisotropic layer are arranged in this order.5. The laminate according to claim 4 ,wherein the adhesive layer is an ultraviolet curable adhesive layer.6. The laminate according to claim 5 ,wherein the adhesive layer is an adhesive layer including at least a (meth)acrylate compound.7. The laminate according to claim 1 , further comprising an alignment layer.8. The laminate according to claim 7 ,wherein the alignment layer is a layer formed from a composition containing a radically polymerizable compound.9. The laminate according to claim 1 ,wherein the resin ...

OPTICAL FILM, METHOD OF MANUFACTURING THE OPTICAL FILM, POLARIZING PLATE USING THE OPTICAL FILM, AND IMAGE DISPLAY DEVICE

There is provided an optical film including: a layer A containing a cyclic olefin-based resin; and a layer B containing a cyclic olefin-based resin, and having a thickness thinner than a thickness of the layer A, wherein a glass transition temperature Tg[B] of the layer B is lower than a glass transition temperature Tg[A] of the layer A. 1. An optical film comprising:a layer A containing a cyclic olefin-based resin; anda layer B containing a cyclic olefin-based resin, and having a thickness thinner than a thickness of the layer A,wherein a glass transition temperature Tg[B] of the layer B is lower than a glass transition temperature Tg[A] of the layer A.2. The optical film of claim 1 ,wherein the optical film satisfies Tg[A]−Tg[B]≧5(° C.).3. The optical film of claim 1 ,wherein the optical film satisfies Tg[A]≧150(° C.).4. The optical film of claim 1 ,wherein a weight average molecular weight of the cyclic olefin-based resin of the layer A is 40,000 or more.5. The optical film of claim 1 ,wherein at least one layer of the layer A and the layer B contains a compound having a molecular weight of 10,000 or less.6. The optical film of claim 1 ,wherein the optical film includes, as the layer B, a first layer B and a second layer B, andthe first layer B, the layer A, and the second layer B are included in this order.7. The optical film of claim 1 ,wherein an absolute value of a dimensional change before and after the optical film is left for 24 hours in an environment of 120° C. and RH of less than 5% is less than 0.2%.8. A method of manufacturing the optical film of claim 1 , comprising:film-forming simultaneously or sequentially the layer A and the layer B by a solution film-forming method.9. An optical film comprising a cyclic olefin-based resin claim 1 ,wherein a glass transition temperature of the optical film is 150° C. or more,a retardation in a thickness-direction of the optical film at a wavelength of 590 nm is 80 nm or more, and{'sup': '−3', 'a plane orientation ...

Optical film, method of manufacturing the optical film, polarizing plate using the optical film, and image display device

There is provided an optical film including: a layer A containing a cyclic olefin-based resin; and a layer B containing a cyclic olefin-based resin, and having a thickness thinner than a thickness of the layer A, wherein a glass transition temperature Tg[B] of the layer B is lower than a glass transition temperature Tg[A] of the layer A.

LIQUID CRYSTAL DISPLAY DEVICE

The present invention is to provide a liquid crystal display device which is capable of suppressing reflected glare of a display screen on a windshield and the like, has excellent front contrast, and has excellent visibility of a display screen as viewed via polarized sunglasses. A liquid crystal display device includes, in order from a viewing side, a viewing side polarizer, a liquid crystal cell, a non-viewing side polarizer, and an anisotropic light absorption layer having an absorption axis in a thickness direction. The liquid crystal display device further includes at least one polarization control layer, in which the polarization control layer is arranged on a viewing side of the viewing side polarizer or on a non-viewing side of the non-viewing side polarizer. 1. A liquid crystal display device comprising , in order from a viewing side:a viewing side polarizer;a liquid crystal cell;a non-viewing side polarizer; andan anisotropic light absorption layer having an absorption axis in a thickness direction,wherein the liquid crystal display device further comprises at least one polarization control layer, andthe polarization control layer is arranged on a viewing side of the viewing side polarizer or on a non-viewing side of the non-viewing side polarizer.2. The liquid crystal display device according to claim 1 ,wherein an absorption axis of the viewing side polarizer is in a machine direction, and an absorption axis of the non-viewing side polarizer is in a transverse direction,the polarization control layer is arranged on a viewing side of the viewing side polarizer, andthe polarization control layer rotates linearly polarized light vertically incident into a plane of the polarization control layer by 80° to 100°.3. The liquid crystal display device according to claim 1 ,wherein an absorption axis of the viewing side polarizer is in a machine direction, and an absorption axis of the non-viewing side polarizer is in a transverse direction,the polarization ...

LAMINATE

An object of the present invention is to provide a laminate in which the coloring of reflected light is reduced. The laminate includes an optical film having a light absorption anisotropic film formed using a composition including a dichroic substance and having a transmittance of more than 50%, a λ/4 plate, and a metal electrode in this order, in which in a case where a degree (%) of polarization at a wavelength of λ of the optical film is defined as P(λ) and a reflectance (%) at the wavelength of λ of the metal electrode is defined as R(λ), a ratio of a minimum value of R/P to a maximum value of R/P at wavelengths of 450 nm, 550 nm, and 650 nm is more than 85%. 1. A laminate comprising:an optical film having a light absorption anisotropic film formed using a composition including a dichroic substance and having a transmittance of more than 50% in a wavelength range of 400 to 700 nm;a λ/4 plate; anda metal electrode in this order, {'br': None, 'i': R', 'P', 'R', 'P', 'R', 'P', 'R', 'P', 'R', 'P', 'R', 'P, '100×[min{(450)/(450),(550)/(550),(650)/(650)}/max{(450)/(450),(550)/(550),(650)/(650)}]>85%\u2003\u2003Formula (A),'}, 'wherein in a case where a degree (%) of polarization at a wavelength of λ of the optical film is defined as P(λ) and a reflectance (%) at the wavelength of λ of the metal electrode is defined as R(λ), Formula (A) is satisfied,'}provided that in Formula (A), min{R(450)/P(450), R(550)/P(550), R(650)/P(650)} and max{R(450)/P(450), R(550)P(550), R(650)/P(650)} mean a minimum value and a maximum value of R(450)/P(450), R(550)/P(550), and R(650)/P(650), respectively.2. The laminate according to claim 1 ,wherein in Formula (A), R(550)/P(550) corresponds to neither min(R(450)/P(450), R(550)/P(550), R(650)/P(650)) nor max{R(450)/P(450), R(550)/P(550), R(650)/P(650)}.3. The laminate according to claim 1 ,wherein in Formula (A),R(450)/P(450) corresponds to min{R(450)/P(450), R(550)/P(550), R(650)/P(650)}, andR(650)/P(650) corresponds to max{R(450)/P(450), ...

Polarizing plate, circularly polarizing plate, and display device

The present invention provides a polarizing plate including a polarizer having a high transmittance, which can be suitably applied to a circularly polarizing plate with which a significant decrease in an antireflection ability is suppressed in a case where the circularly polarizing plate is disposed on a display element; a circularly polarizing plate; and a display device. The polarizing plate includes a polarizer and an adjacent layer in contact with the polarizer, in which a transmittance in the absorption axis direction of the polarizer is 4.0% or more, and an in-plane average refractive index of the adjacent layer satisfies a relationship of Formula (X), Formula (X): Refractive index in a transmission axis direction of the polarizer<In-plane average refractive index of the adjacent layer<Refractive index in the absorption axis direction of the polarizer.

Optical film, retardation film, polarizing plate, and liquid crystal display device

【課題】液晶表示装置において表示面の光ムラを低減することができ、かつＲｔｈの湿熱耐久性に優れた光学フィルムを提供すること。 【解決手段】平均炭素数が２．０１以上の多価アルコールと平均炭素数が４．１０以上の多塩基酸との縮合物、及びセルロースエステルを含む光学フィルムであって、該縮合物を構成する少なくとも１種の多価アルコールは、３つ以上の炭素原子が他の元素を介さずに連続して結合した構造を有する多価アルコールであり、該縮合物を該セルロースエステルに対して３０質量％より多く含有する光学フィルム。 【選択図】なし

Liquid crystal display device

光吸収異方性層、積層体、光学フィルム、画像表示装置、バックライトモジュール

【課題】 本発明は、二色性物質を含有し、正面から見た場合の透過率が高く、且つ、斜め方向の透過率を低くすることができる光吸収異方性層、積層体、光学フィルム、画像表示装置、および、バックライトモジュールを提供することを課題とする。【解決手段】 液晶性化合物と、少なくとも１種類の二色性物質とを含み、二色性物質が膜面に対し垂直に配向している光吸収異方性層であって、光吸収異方性層の波長５５０ｎｍにおける配向度が０．９５以上である、光吸収異方性層。【選択図】なし

光学積層体、画像表示装置及びガラス複合体

【課題】 本発明は、高精細な画像表示装置と組み合わせて使用した場合にもモアレの発生がなく、かつ、フィルムの法線方向から斜めとなる方向に出射する光を十分に遮光することができる、光学積層体、画像表示装置及びガラス複合体を提供することを課題とする。【解決手段】少なくとも第１の光吸収異方性層、一層以上のツイスト構造を有する液晶性化合物を含有する屈折率異方性層、および、第２の光吸収異方性層をこの順に有し、上記第１の光吸収異方性層、および、第２の光吸収異方性層は、異方性吸収材料を含有し、吸収軸が膜面に対し６０度～９０度の角度で配向している。【選択図】図２

Optical filter, optical device, and head-mounted display

Provided are an optical filter, an optical device, and a head-mounted display which have a high light transmittance in a front direction and a wide real field of view. The optical filter includes a first anisotropic absorption layer, a first retardation layer, and a second anisotropic absorption layer in this order, each of the first anisotropic absorption layer and the second anisotropic absorption layer contains a dichroic colorant, an absorption axis of the dichroic colorant is perpendicular to a main surface, and the first retardation layer has polar angle dependence of retardation that has asymmetry about a normal direction with respect to incident light hitting at least one incident surface including a normal of a layer surface of the first retardation layer.

Optical element and image display apparatus

An optical element includes a light guide plate, an incidence portion, and an emission portion, in which the incidence/emission portion includes an Λ1 diffraction element having a diffraction period Λ1, an Λ2 diffraction element having a diffraction period Λ2, and an Λ3 diffraction element having a diffraction period Λ3, “Λ1:Λ2:Λ3 = 1: 1/√2± 0.015: ½ ± 0.015” is satisfied, an angle between periodic directions of the Λ1 diffraction element and the Λ2 diffraction element and an angle between periodic directions of the Λ2 diffraction element and the Λ3 diffraction element is 45° or 135° (± 0.5°), and an angle between the periodic directions of the Λ2 diffraction elements in the incidence portion and the emission portion is any one of 0°, 90°, 180°, or 270° (± 0.5°).

光学フィルム、位相差フィルム、偏光板及び液晶表示装置

【課題】偏光板加工性に優れ、かつ液晶表示装置の表示面に円形状の光ムラや外周の光ムラが発生しない光学フィルム、及び偏光板を製造すること。 【解決手段】繰り返し単位を有する化合物、レタデーションの耐久性を向上させる化合物、及びセルロースエステルを含む光学フィルムであって、 該繰り返し単位を有する化合物が該セルロースエステルに対して３０質量％以上含まれることを特徴とする光学フィルム。 【選択図】なし

Polarizing element, circularly polarizing plate, and image display device

The present invention provides a polarizing element which has an excellent antireflection function as being applied to an image display device; and a circularly polarizing plate and an image display device, each of which has a polarizing element. The polarizing element has an alignment film and an anisotropic light-absorbing film formed using a dichroic substance, in which a degree S of alignment of the anisotropic light-absorbing film is 0.92 or more, an average refractive index n ave at a wavelength of 400 to 700 nm of the alignment film is 1.55 or more and less than 1.78, an in-plane refractive index anisotropy Δn at a wavelength of 550 nm of the alignment film is less than 0.10.

Viewing angle control system and image display device

Provided is a viewing angle control polarizing plate that has asymmetric transmission characteristics, does not cause moire even in a case of being used in combination with a high-definition image display device, and is capable of easily following a curved surface and a viewing angle control system with high productivity. The viewing angle control system includes at least a first polarizer and an optically anisotropic layer, in which an absorption axis of the first polarizer forms an angle of 45° or greater with respect to an in-plane direction, and a main axis of a refractive index of the optically anisotropic layer is tilted in the in-plane direction.

Optical film, manufacturing method of light absorption anisotropic layer, and image display device

An optical film that, when being used in an image display device, it is possible to suppress a change in redness with respect to an original image in images reflected in surroundings, a manufacturing method of a light absorption anisotropic layer, and an image display device. The optical film includes a light absorption anisotropic layer which contains a liquid crystalline compound and a dichroic substance, in which an angle θ between a transmittance central axis of the light absorption anisotropic layer and a normal direction of a surface of the light absorption anisotropic layer is 0° or more and 45° or less, and a haze value of the optical film is more than 1% and 20% or less.

Light absorption anisotropic film, optical film, and image display device

The present invention provides a A light absorption anisotropic film that, in a case of being applied to an image display device, it is possible to suppress redness of an image originating from the image display device, which is reflected on surrounding members arranged around the image display device; and an optical film and an image display device. The light absorption anisotropic film of the present invention is a light absorption anisotropic film is formed of a composition containing a liquid crystal compound and a dichroic substance, in which the light absorption anisotropic film has two main surfaces facing each other, an angle between a normal direction of the main surface of the light absorption anisotropic film and a transmittance central axis of the light absorption anisotropic film is 0° to 45°, and predetermined requirements are satisfied depending on the angle.

Light guide element comprising a diffraction element having a cholesteric liquid crystal layer with a pitch gradient

A light guide element includes: a light guide plate; and a diffraction element that is disposed on a main surface of the light guide plate, in which the diffraction element includes a liquid crystal layer that is formed of a liquid crystal composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, a refractive index of the light guide plate is 1.70 or higher, and in a case where the refractive index of the light guide plate is represented by nd and a refractive index of the liquid crystal layer is represented by nk, nk−nd≥0 is satisfied.

遮光されたロール状フィルム、遮光されたロール状フィルムの製造方法、熱重合開始剤を含むロール状フィルム、熱重合開始剤を含むロール状フィルムの製造方法、ハードコートフィルム、ハードコートフィルムの製造方法、偏光板および液晶表示装置

【課題】ハードコート層を積層したときに表面硬度を高くできる、ロール状フィルムの提供。 【解決手段】１層または２層以上からなり、かつ、セルロースエステルおよびセルロースエステルに対して２〜２０質量％の光重合開始剤を含むセルロースエステル層を少なくとも空気界面に有するフィルムがロール状に巻き取られたロール状フィルムと、ロール状フィルムを覆い、かつ、２００〜４５０ｎｍの波長帯域のＵＶ光の透過率が０．１％以下である遮光材とを有する、遮光されたロール状フィルム；遮光されたロール状フィルムの製造方法；熱重合開始剤を含むロール状フィルム；熱重合開始剤を含むロール状フィルムの製造方法；ハードコートフィルム；ハードコートフィルムの製造方法、；偏光板；液晶表示装置。 【選択図】図１

Light absorption anisotropic layer, optical film, viewing angle control system, and image display device

A light absorption anisotropic layer which has high contrast and can suppress hue change of an image reflected by surroundings relative to an original image when used in a viewing angle control system, an optical film using the light absorption anisotropic layer, a viewing angle control system, and an image display device. The light absorption anisotropic layer is formed of a liquid crystal composition containing a liquid crystalline compound, a dichroic substance, and an alignment agent. The liquid crystalline compound is in a liquid crystal state of a smectic phase, a content of the dichroic substance is 5.0% by mass or more with respect to a total solid content mass of the liquid crystal composition, and an angle θ between a transmittance central axis of the light absorption anisotropic layer and a normal direction of a surface of the light absorption anisotropic layer is between 0° and 45°.

Light absorption anisotropic layer, laminate, optical film, image display device, and backlight module

Provided is a light absorption anisotropic layer including a dichroic substance, in which a transmittance as viewed from a front direction is high and a transmittance as viewed from an oblique direction can be lowered, a laminate, an optical film, an image display device, and a backlight module. The light absorption anisotropic layer includes a liquid crystalline compound and at least one dichroic substance, in which the dichroic substance is aligned perpendicular to the film surface, and an alignment degree of the light absorption anisotropic layer at a wavelength of 550 nm is 0.95 or more.

Optical element and image display apparatus

An optical element includes a light guide plate, an incidence portion, and an emission portion, in which each of the incidence portion and the emission portion includes diffraction portions, the diffraction portion includes diffraction elements, the diffraction element includes a liquid crystal diffraction layer in which a direction of an optical axis of a liquid crystal compound changes while continuously rotating in one in-plane direction, and in a case where the direction in which the direction of the optical axis changes is set as an in-plane rotation direction and a length over which the optical axis rotates by 180° is set as an in-plane period, in-plane rotation directions of liquid crystal diffraction layers of incidence diffraction elements in at least two of a plurality of the incidence diffraction portions are different from each other.

Backlight unit and liquid crystal display device

Provided are a backlight unit and a liquid crystal display device including the backlight unit, the backlight unit being capable of switching between viewing angles in the liquid crystal display device and having a configuration in which the brightness values of emitted light on the “+” side and the “−” side at a polar angle with respect to the normal line are symmetric to each other. The backlight unit includes: a light guide plate; a first light source that guides light into the light guide plate from a long side or a short side of the light guide plate; a second light source that guides light into the light guide plate from a side of the light guide plate different from that of the first light source; a first diffraction element that is provided on one main surface of the light guide plate and diffracts only light emitted from one of the first light source or the second light source; a second diffraction element that is provided on another main surface of the light guide plate and diffracts only light emitted from another one of the first light source or the second light source; and a reflection plate that is provided on a surface of the light guide plate opposite to a light emission surface.

Organic el display device

An organic EL display device capable of suppressing a change in tint in a case where white display is visually recognized from an oblique direction. The organic EL display device includes an organic EL display element and a light absorption anisotropic layer, in which the light absorption anisotropic layer is a light absorption anisotropic layer formed of a composition containing a liquid crystal compound and a dichroic substance, an angle between a transmittance central axis of the light absorption anisotropic layer and a normal line of a layer plane of the light absorption anisotropic layer is 0° or more and 450 or less, and A(λ) of the light absorption anisotropic layer represented by Expression (1) A(λ)={kz(λ)−(kx(λ)+ky(λ))/2}×d, is 15 to 225 nm at a maximal absorption wavelength of the light absorption anisotropic layer.

Method of forming photo-alignment film and method of forming liquid crystal layer

Provided are a method of forming a photo-alignment film having a large size that can appropriately align a liquid crystal compound can be formed and a method of forming a liquid crystal layer having a large size in which alignment defects of a liquid crystal compound can be suppressed. The method of forming a photo-alignment film includes: an exposure step of irradiating a surface of a photo-alignment film including a photo-alignment material that is formed on a support with interference light formed by intersection of two light components such that the surface of the photo-alignment film is exposed to form, on the photo-alignment film, an alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction; and a moving step of moving the support by a distance D in a direction parallel to the surface of the support and parallel to a straight line formed by optical axes of the two beams, in which the photo-alignment film is exposed by alternately repeating the exposure step and the moving step. Here, the distance D is represented by λ/{2×sin(α/2)}×N−λ/8<D<λ/{2×sin(α/2)}×N+λ/8.