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1. WO2020116310 - DISPLAY DEVICE

Publication Number WO/2020/116310
Publication Date 11.06.2020
International Application No. PCT/JP2019/046575
International Filing Date 28.11.2019
IPC
G02F 1/1335 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/13357 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
13357Illuminating devices
G09F 9/00 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
9Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
G09F 9/35 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
9Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
30in which the desired character or characters are formed by combining individual elements
35being liquid crystals
Applicants
  • 国立大学法人大阪大学 OSAKA UNIVERSITY [JP]/[JP]
Inventors
  • 吉田 浩之 YOSHIDA Hiroyuki
  • 趙 成龍 CHO SeongYong
  • 尾▲崎▼ 雅則 OZAKI Masanori
Agents
  • 前井 宏之 MAEI Hiroyuki
Priority Data
2018-22730404.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DISPLAY DEVICE
(FR) DISPOSITIF D'AFFICHAGE
(JA) 表示装置
Abstract
(EN)
This display device (100) comprises an optical waveguide layer (11), a variable refractive index layer (13), and an optical layer (17). The optical waveguide layer (11) guides light (LT). In the variable refractive index layer (13), a refractive index varies in response to application of a driving voltage (Vd). The optical layer (17) reflects or absorbs the light (LT). The variable refractive index layer (13) is disposed between the optical waveguide layer (11) and the optical layer (17). The variable refractive index layer (13) reflects the light (LT), guided through the optical waveguide layer (11), toward the inside of the optical waveguide layer (11) according to the refractive index of the variable refractive index layer (13), and guides the light through the optical waveguide layer (11). The variable refractive index layer (13) introduces the light (LT), guided through the optical waveguide layer (11), into the variable refractive index layer (13) according to the refractive index of the variable refractive index layer (13), and emits the light (LT) to the outside of the variable refractive index layer (13). The optical layer (17) reflects or absorbs the light (LT) emitted from the variable refractive index layer (13).
(FR)
L'invention concerne un dispositif d'affichage (100) comprenant une couche de guide d'ondes optique (11), une couche à indice de réfraction variable (13), et une couche optique (17). La couche de guide d'ondes optique (11) guide la lumière (LT). Dans la couche à indice de réfraction variable (13), un indice de réfraction varie en réponse à l'application d'une tension d'attaque (Vd). La couche optique (17) réfléchit ou absorbe la lumière (LT). La couche à indice de réfraction variable (13) est disposée entre la couche de guide d'ondes optique (11) et la couche optique (17). La couche à indice de réfraction variable (13) réfléchit la lumière (LT), guidée au travers de la couche de guide d'ondes optique (11), vers l'intérieur de la couche de guide d'ondes optique (11) en fonction de l'indice de réfraction de la couche à indice de réfraction variable (13), et guide la lumière au travers de la couche de guide d'ondes optique (11). La couche à indice de réfraction variable (13) introduit la lumière (LT), guidée au travers de la couche de guide d'ondes optique (11), jusque dans la couche à indice de réfraction variable (13) en fonction de l'indice de réfraction de la couche à indice de réfraction variable (13), et émet la lumière (LT) vers l'extérieur de la couche à indice de réfraction variable (13). La couche optique (17) réfléchit ou absorbe la lumière (LT) émise en provenance de la couche à indice de réfraction variable (13).
(JA)
表示装置(100)は、光導波層(11)と、屈折率可変層(13)と、光学層(17)とを備える。光導波層(11)は光(LT)を導波させる。屈折率可変層(13)では、駆動電圧(Vd)の印加に応答して屈折率が変化する。光学層(17)は、光(LT)を反射又は吸収する。屈折率可変層(13)は、光導波層(11)と光学層(17)との間に配置される。屈折率可変層(13)は、光導波層(11)を導波する光(LT)を、屈折率可変層(13)の屈折率に応じて光導波層(11)の内部に向けて反射して、光導波層(11)を導波させる。屈折率可変層(13)は、光導波層(11)を導波する光(LT)を、屈折率可変層(13)の屈折率に応じて屈折率可変層(13)の内部に導入して、屈折率可変層(13)の外部に出射する。光学層(17)は、屈折率可変層(13)が出射した光(LT)を反射又は吸収する。
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