JP7412775B2 - 表示装置 - Google Patents
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- JP7412775B2 JP7412775B2 JP2020559117A JP2020559117A JP7412775B2 JP 7412775 B2 JP7412775 B2 JP 7412775B2 JP 2020559117 A JP2020559117 A JP 2020559117A JP 2020559117 A JP2020559117 A JP 2020559117A JP 7412775 B2 JP7412775 B2 JP 7412775B2
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133616—Front illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13718—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a change of the texture state of a cholesteric liquid crystal
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Planar Illumination Modules (AREA)
Description
図1~図8(c)を参照して、本発明の実施形態1に係る表示装置100を説明する。まず、図1を参照して表示装置100を説明する。図1は、実施形態1に係る表示装置100を示す断面図である。
次に、図1及び図9を参照して、実施形態1の変形例に係る光学層17を説明する。変形例に係る光学層17が積層構造体180を有する点で、変形例は図1を参照して説明した実施形態1と主に異なる。以下、変形例が実施形態1と異なる点を主に説明する。
図10を参照して、本発明の実施形態2に係る表示装置100Aを説明する。実施形態2に係る表示装置100Aがクラッド層23を有する点で、実施形態2は実施形態1と主に異なる。以下、実施形態2が実施形態1と異なる点を主に説明する。
図13を参照して、実施形態2の第1変形例に係る表示装置100Aを説明する。第1変形例に係る表示装置100Aが時分割方式でカラー表示を実行する点で、第1変形例は図10を参照して説明した実施形態2に係る表示装置100Aと主に異なる。以下、第1変形例が実施形態2と異なる点を主に説明する。
図14を参照して、実施形態2の第2変形例に係る表示装置100Aを説明する。第2変形例に係る表示装置100Aが空間分割方式でカラー表示を実行する点で、第2変形例は図10を参照して説明した実施形態2に係る表示装置100Aと主に異なる。以下、第2変形例が実施形態2と異なる点を主に説明する。
図15を参照して、本発明の実施形態3に係る表示装置100Bを説明する。実施形態3に係る表示装置100Bが光LTXを吸収する光学層31を有する点で、実施形態3は図10を参照して説明した実施形態2に係る表示装置100Aと主に異なる。以下、実施形態3が実施形態2と異なる点を主に説明する。
図16を参照して、本発明の実施形態4に係る表示装置100Cを説明する。実施形態4に係る表示装置100Cが吸収率可変層79を有している点で、実施形態4は実施形態2と主に異なる。以下、実施形態4が実施形態2と異なる点を主に説明する。
3 光源部
3W 白色光源
4、4R、4G、4B 光源
11 光導波層
17、31 光学層
21 電極ユニット
23 クラッド層
79 吸収率可変層
171 螺旋状構造体
180 積層構造体
181 基板
183 誘電体多層膜
LQ 液晶
Claims (10)
- 光を導波させる光導波層と、
前記光導波層を前記光が導波するように、前記光を前記光導波層に向けて出射する光源部と、
駆動電圧の印加に応答して屈折率が変化する屈折率可変層と、
光学層と
を備え、
前記光源部が出射する前記光は、可視光を含み、
前記屈折率可変層は、前記光導波層と前記光学層との間に配置され、
前記屈折率可変層は、
前記光導波層を導波する前記可視光を、前記屈折率可変層の前記屈折率に応じて前記光導波層の内部に向けて反射して、前記光導波層を導波させ、
前記光導波層を導波する前記可視光を、前記屈折率可変層の前記屈折率に応じて前記屈折率可変層の内部に導入して、前記屈折率可変層の外部に出射し、
前記光学層は、前記光導波層から導入されて前記屈折率可変層が出射した前記可視光を反射し、
前記光導波層は、前記光導波層を導波不可能な角度で入射した環境光を透過し、
前記屈折率可変層は、前記光導波層が透過した前記環境光を透過し、
前記光学層は、前記屈折率可変層が透過した前記環境光に含まれる可視光を透過する、表示装置。 - 前記光学層は、前記屈折率可変層が出射した前記光を拡散反射する、請求項1に記載の表示装置。
- 前記光学層は、複数の螺旋状構造体、又は、積層構造体を含み、
前記複数の螺旋状構造体の各々は、前記屈折率可変層に交差する方向に沿って延びており、
前記複数の螺旋状構造体のうちの2以上の螺旋状構造体の空間位相が互いに異なり、
前記積層構造体は、凸凹形状の表面を有する基板と、前記基板の前記表面に積層された誘電体多層膜とを含む、請求項1又は請求項2に記載の表示装置。 - 前記光源部は、互いに波長の異なる複数の可視光をそれぞれ出射する複数の光源を含み、
前記複数の光源は、前記複数の可視光を、互いに異なるタイミングで前記光導波層に向けて出射する、請求項1から請求項3のいずれか1項に記載の表示装置。 - 前記光源部は、白色光を出射する白色光源を含み、
前記白色光源は、前記白色光を前記光導波層に向けて出射し、
前記屈折率可変層は、前記白色光に含まれる互いに異なる波長の複数の可視光を、前記屈折率可変層の前記屈折率に応じて前記屈折率可変層の異なる位置から異なる角度で導入して、前記屈折率可変層の異なる位置から外部に出射する、請求項1から請求項3のいずれか1項に記載の表示装置。 - 前記光導波層、前記屈折率可変層、及び、前記光学層は、表示部を構成し、
前記光導波層、前記屈折率可変層、及び、前記光学層は、前記表示部の表面側と裏面側とのうち、前記表面側から入射する前記環境光に含まれる前記可視光を透過するとともに、前記裏面側から入射する環境光に含まれる可視光を透過する、請求項1から請求項5のいずれか1項に記載の表示装置。 - 光を導波させる光導波層と、
前記光導波層を前記光が導波するように、前記光を前記光導波層に向けて出射する光源部と、
駆動電圧の印加に応答して屈折率が変化する屈折率可変層と、
光学層と
を備え、
前記屈折率可変層は、前記光導波層と前記光学層との間に配置され、
前記屈折率可変層は、
前記光導波層を導波する前記光を、前記屈折率可変層の前記屈折率に応じて前記光導波層の内部に向けて反射して、前記光導波層を導波させ、
前記光導波層を導波する前記光を、前記屈折率可変層の前記屈折率に応じて前記屈折率可変層の内部に導入して、前記屈折率可変層の外部に出射し、
前記光学層は、前記光導波層から導入されて前記屈折率可変層が出射した前記光を吸収して着色し、
前記光導波層は、前記光導波層を導波不可能な角度で入射した環境光を透過し、
前記屈折率可変層は、前記光導波層が透過した前記環境光を透過し、
前記光学層において、前記光導波層から導入されて前記屈折率可変層が出射した前記光が入射しない部分は、着色せず透き通っている、表示装置。 - 前記屈折率可変層は、液晶を含む液晶層である、請求項1から請求項7のいずれか1項に記載の表示装置。
- 前記屈折率可変層に前記駆動電圧を印加する電極ユニットと、
前記光導波層の屈折率よりも小さい屈折率を有するクラッド層と
をさらに備え、
前記光導波層は、前記クラッド層と前記屈折率可変層との間に配置される、請求項1から請求項8のいずれか1項に記載の表示装置。 - 光を透過する状態と光を吸収する状態とが、印加される制御電圧に応じて切り替わる吸収率可変層をさらに備え、
前記吸収率可変層は、前記光学層に対して、前記屈折率可変層の反対側に配置される、請求項1から請求項9のいずれか1項に記載の表示装置。
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