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1. WO2020000767 - LOCALLY ERASABLE LIQUID CRYSTAL WRITING DEVICE AND PARTIAL ERASING METHOD

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Publication Number WO/2020/000767
Publication Date 02.01.2020
International Application No. PCT/CN2018/109606
International Filing Date 10.10.2018
IPC
G02F 1/1333 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
CPC
G02F 1/13306
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
13306Circuit arrangements or driving methods for the control of single liquid crystal cells
G02F 1/13338
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
13338Input devices, e.g. touch panels
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 1/136286
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
136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
1362Active matrix addressed cells
136286Wiring, e.g. gate line, drain line
G06F 3/042
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
01Input arrangements or combined input and output arrangements for interaction between user and computer
03Arrangements for converting the position or the displacement of a member into a coded form
041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
042by opto-electronic means
Applicants
  • 广州林登科技有限公司 LINNDENN TECHNOLOGY CO., LTD [CN]/[CN]
Inventors
  • 郑明炜 ZHENG, Mingwei
Agents
  • 北京商专永信知识产权代理事务所（普通合伙） SBZL IP LAW OFFICE
Priority Data
201810687273.628.06.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LOCALLY ERASABLE LIQUID CRYSTAL WRITING DEVICE AND PARTIAL ERASING METHOD
(FR) DISPOSITIF D'ÉCRITURE À CRISTAUX LIQUIDES EFFAÇABLE LOCALEMENT ET PROCÉDÉ D'EFFACEMENT PARTIEL
(ZH) 一种可局部擦除的液晶书写装置及局部擦除方法
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Abstract
(EN)
A locally erasable liquid crystal writing device, comprising a liquid crystal writing screen, wherein the liquid crystal writing screen comprises an erasure conductive layer and a display material layer, the erasure conductive layer comprising a first erasure conductive layer and a second erasure conductive layer, and the display material layer being disposed between the first erasure conductive layer and the second erasure conductive layer; a plurality of mutually insulated conductive blocks are disposed in at least one of the first erasure conductive layer and the second erasure conductive layer so as to form an array of conductive blocks; when at least one conductive block accesses a second erasure voltage signal, and a conductive block of the other erasure conductive layer corresponding to the conductive block or the entire erasure conductive layer accesses a first erasure voltage signal, an electric field is formed between the conductive block and the conductive block of the other erasure conductive layer or the entire erasure conductive layer, and a writing trace of an area of a relatively covered display material layer thereof is erased. The liquid crystal writing device of the present invention has a simple principle and a simple structure and is easy to implement, may accurately control the erasing area, and the erasing effect thereof is good.
(FR)
L'invention concerne un dispositif d'écriture à cristaux liquides effaçable localement, qui comprend : un écran d'écriture à cristaux liquides comportant une couche conductrice d'effacement et une couche de matériau d'affichage, la couche conductrice d'effacement comprenant une première couche conductrice d'effacement et une seconde couche conductrice d'effacement, et la couche de matériau d'affichage étant disposée entre la première couche conductrice d'effacement et la seconde couche conductrice d'effacement; une pluralité de blocs conducteurs mutuellement isolés sont disposés dans la première couche conductrice d'effacement et/ou la seconde couche conductrice d'effacement de manière à former un réseau de blocs conducteurs; lorsqu'au moins un bloc conducteur accède à un second signal de tension d'effacement, et un bloc conducteur de l'autre couche conductrice d'effacement correspondant au bloc conducteur ou à la totalité de la couche conductrice d'effacement accède à un premier signal de tension d'effacement, un champ électrique est formé entre le bloc conducteur et le bloc conducteur de l'autre couche conductrice d'effacement ou la totalité de la couche conductrice d'effacement, et une trace d'écriture d'une zone d'une couche de matériau d'affichage relativement recouverte de celle-ci est effacée. Le dispositif d'écriture à cristaux liquides de l'invention est simple dans son principe et dans sa structure, il est facile à mettre en œuvre, peut contrôler avec précision la zone d'effacement, et présente un bon effet d'effacement.
(ZH)
一种可局部擦除的液晶书写装置，包括液晶书写屏，液晶书写屏包括擦除导电层和显示材料层，擦除导电层包括第一擦除导电层和第二擦除导电层，显示材料层设置在第一擦除导电层和第二擦除导电层之间；第一擦除导电层和第二擦除导电层的至少一个中设有多个相互绝缘的导电块，形成导电块阵列；当至少一个导电块接入第二擦除电压信号，且与导电块对应的另一个擦除导电层的导电块或整个擦除导电层接入第一擦除电压信号时，导电块与另一个擦除导电层的导电块或整个擦除导电层之间形成电场，其相对覆盖的显示材料层的区域的书写痕迹被擦除。本发明的液晶书写装置的原理简单，结构简洁而易于实现，能精确控制擦除区域，擦除效果好。
Also published as
CN108828821
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