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1. WO2020087582 - MULTI-DOMAIN LIQUID CRYSTAL DISPLAY

Publication Number WO/2020/087582
Publication Date 07.05.2020
International Application No. PCT/CN2018/116022
International Filing Date 16.11.2018
IPC
G02F 1/1343 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
1343Electrodes
G09G 3/36 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
36using liquid crystals
CPC
G02F 1/134309
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; ; Manufacturing methods
1343Electrodes
134309characterised by their geometrical arrangement
G02F 2001/134354
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; ; Manufacturing methods
1343Electrodes
134309characterised by their geometrical arrangement
134345Subdivided pixels, e.g. grey scale, redundancy
134354the sub-pixels being capacitively coupled
G09G 3/3607
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
36using liquid crystals
3607for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
Applicants
  • 深圳市华星光电技术有限公司 SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 陈黎暄 CHEN, Lixuan
Agents
  • 深圳市德力知识产权代理事务所 COMIPS INTELLECTUAL PROPERTY OFFICE
Priority Data
201811271068.829.10.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) MULTI-DOMAIN LIQUID CRYSTAL DISPLAY
(FR) DISPOSITIF D'AFFICHAGE À CRISTAUX LIQUIDES À PLUSIEURS DOMAINES
(ZH) 多畴液晶显示器
Abstract
(EN)
Disclosed is a multi-domain liquid crystal display, comprising an LCD panel (1), an incident-side polarizer (2) and an emergent-side polarizer (3). The LCD panel (1) comprises multiple pixel structures (5) arranged in an array, wherein each pixel structure (5) comprises at least two sub-pixels (10) which respectively correspond to different colors, each sub-pixel (10) is divided into at least four domain areas (15), each domain area (15) comprises multiple branch electrodes (16) which are parallel to each other and distributed at intervals, and included angles (θ) between the branch electrodes (16) of the at least two sub-pixels (10) which respectively correspond to different colors and a transmission axis of the incident-side polarizer (2) are different. Compared with the prior art, on the basis of a multi-domain structure, the multi-domain display further enables the branch electrodes (16) of the sub-pixels (10) corresponding to different colors and transmission axes of the polarizers (2) and (3) to have different included angles (θ), so that the degree difference of the voltage transmission rate curve deviation of red, green and blue sub-pixels (10) under squinting and emmetropia is reduced, the visual angle color shift problem of the liquid crystal display panel (1) can be effectively improved, and the structure and a manufacturing method are simple and do not result in other additional manufacturing process and a cost impact.
(FR)
L'invention concerne un dispositif d'affichage à cristaux liquides à plusieurs domaines, comprenant un panneau d'affichage à cristaux liquides, LCD (1), un polariseur côté incident (2) et un polariseur côté émergent (3). Le panneau LCD (1) comprend de multiples structures de pixel (5) agencées en un réseau, chaque structure de pixel (5) comprenant au moins deux sous-pixels (10) qui correspondent respectivement à différentes couleurs, chaque sous-pixel (10) étant divisé en au moins quatre zones de domaine (15), chaque zone de domaine (15) comprenant de multiples électrodes de branche (16) qui sont parallèles les unes aux autres et réparties selon des intervalles, et des angles inclus (θ) entre les électrodes de branche (16) desdits au moins deux sous-pixels (10) qui correspondent respectivement à différentes couleurs et un axe de transmission du polariseur côté incident (2) étant différents. Par comparaison avec l'état antérieur de la technique, sur la base d'une structure à plusieurs domaines, le dispositif d'affichage à plusieurs domaines permet en outre aux électrodes de branche (16) des sous-pixels (10) correspondant à différentes couleurs et aux axes de transmission des polariseurs (2) et (3) d'avoir différents angles inclus (θ), de telle sorte que la différence de degré de l'écart de courbe de taux de transmission de tension des sous-pixels rouges, verts et bleus (10) sous strabisme et emmétropie est réduite, le problème de décalage de couleur d'angle visuel du panneau d'affichage à cristaux liquides (1) peut être efficacement amélioré, et la structure et un procédé de fabrication sont simples et ne résultent pas en d'autres processus de fabrication supplémentaires et un impact économique.
(ZH)
一种多畴液晶显示器,包括LCD面板(1)、入射侧偏光片(2)及出射侧偏光片(3),该LCD面板(1)包括多个阵列排布的像素结构(5),每个像素结构(5)包括至少两种分别对应不同颜色的子像素(10),每个子像素(10)划分为至少四个畴区域(15),每个畴区域(15)包括多条相互平行且间隔分布的分支电极(16),至少有两种分别对应不同颜色的子像素(10)的分支电极(16)与入射侧偏光片(2)的透过轴之间的夹角(θ)不相同,相比于现有技术,该多畴显示器在多畴结构的基础上,进一步使对应不同颜色的子像素(10)中分支电极(16)与偏光片(2)、(3)透过轴之间具有不同的夹角(θ),以缩小红绿蓝色子像素(10)在斜视和正视下电压透过率曲线偏离的程度差异,可有效改善液晶显示面板(1)的视角色偏问题,且结构及制作方法简单,不会带来其他额外制程和成本影响。
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