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1. CN207663190 - Liquid crystal board system

Office China
Application Number 201721462064.9
Application Date 03.11.2017
Publication Number 207663190
Publication Date 27.07.2018
Publication Kind U
IPC
G02F 1/137
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
137characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
G02F 1/133
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
Applicants JIA PEIMIN
贾培敏
Inventors JIA PEIMIN
贾培敏
Agents 深圳市明日今典知识产权代理事务所(普通合伙) 44343
Title
(EN) Liquid crystal board system
(ZH) 液晶写字板系统
Abstract
(EN)
The utility model discloses a liquid crystal board system, wherein, liquid crystal board system, include: liquid crystal board body, selective erase drive circuit, selective erase drive circuit with liquid crystal board body electricity is connected to a driving voltage that binding interaction erases regional external force and realizes the selective erase on the liquid crystal board is provided,a driving voltage is lighter than the liquid crystal cut in voltage of liquid crystal board body. The utility model discloses a liquid crystal board system is through external selective erase drive circuit on current liquid crystal board, with the driving voltage who produces the selective erase, and combine the special soft piece of erasing to clean the suitable pressure of regional area production, the layer for liquid crystal display's that makes the regional area jointly and correspond cholesteric liquid crystal's anchoring power changes, make cholesteric liquid crystal become burnt conical structure by planar structure, make the regional area writing content on the liquid crystal board system display screen disappear, realize the selective erase with the accuracy.

(ZH)
本实用新型揭示了液晶写字板系统,其中,液晶写字板系统,包括:液晶写字板本体、局部擦除驱动电路;所述局部擦除驱动电路与所述液晶写字板本体电连接,以提供结合作用于液晶写字板上擦除区域的外力实现局部擦除的第一驱动电压;所述第一驱动电压小于所述液晶写字板本体的液晶开启电压。本实用新型的液晶写字板系统通过在现有液晶写字板上外接局部擦除驱动电路,以产生局部擦除的驱动电压,并结合特设的软质擦除件擦拭局部区域产生合适的压强,共同使局部区域所对应的液晶显示层的胆甾相液晶的锚定力发生变化,使胆甾相液晶由平面结构变为焦锥结构,使液晶写字板系统显示屏上的局部区域书写内容消失,以准确实现局部擦除。