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1. CN109031750 - White-light handwriting and reflectively-enhanced liquid crystal writing board and a preparation method thereof

Office
China
Application Number 201810962763.2
Application Date 22.08.2018
Publication Number 109031750
Publication Date 18.12.2018
Publication Kind A
IPC
G02F 1/1334
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
1334based on polymer-dispersed liquid crystals, e.g. microencapsulated liquid crystals
C08F 220/20
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10Esters
20of polyhydric alcohols or phenols
C08F 220/28
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10Esters
26Esters containing oxygen in addition to the carboxy oxygen
28containing no aromatic rings in the alcohol moiety
C08F 220/34
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10Esters
34Esters containing nitrogen
C08F 222/14
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
222Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
10Esters
12of phenols or saturated alcohols
14Esters having no free carboxylic acid groups
C08F 2/48
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
46Polymerisation initiated by wave energy or particle radiation
48by ultra-violet or visible light
CPC
C08F 2/48
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2Processes of polymerisation
46Polymerisation initiated by wave energy or particle radiation
48by ultra-violet or visible light
C08F 220/20
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
220Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
10Esters
20of polyhydric alcohols or phenols ; , e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
G02F 1/1334
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
1334based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
G02F 1/13345
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
1334based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
13345Network or three-dimensional gels
Applicants SUZHOU MEIJIAXIE INTELLIGENT DISPLAY TECHNOLOGY CO., LTD.
苏州美嘉写智能显示科技有限公司
Inventors WANG DONG
王冬
ZHAO YUZHEN
赵玉真
ZHANG YUAN
张元
WANG YUDUO
王玉铎
Agents 北京律谱知识产权代理事务所(普通合伙) 11457
Title
(EN) White-light handwriting and reflectively-enhanced liquid crystal writing board and a preparation method thereof
(ZH) 一种白光字迹、反射增强型液晶写字板及其制备方法
Abstract
(EN)
The invention discloses a white-light handwriting and reflectively-enhanced liquid crystal writing board and a preparation method thereof. The white-light handwriting and reflectively-enhanced liquidcrystal writing board comprises a polyethylene terephthalate (PET) transparent film with a silver or copper metal grid plated on one side, a liquid crystal thin layer containing a chiral compound-supported mesoporous material, and a PET non-transparent black film with a silver or copper metal grid plated on one side. According to the white-light enhanced liquid crystal writing board and the preparation method thereof, the chiral compound-supported mesoporous material is introduced into a liquid crystal system, and the diffusion of a chiral compound in mesopores is controlled, thereby making the chiral compound present gradient or uneven distribution in the liquid crystal system, resulting in the gradient or uneven distribution of the pitches of the liquid crystal system. Then, the reflective wave width of the liquid crystal system is greatly improved through ultraviolet polymerization anchoring pitches to cover the whole visible light area, thereby making the handwriting of the writingboard white, and greatly improving the brightness, contrast and other key technical indexes.

(ZH)
本发明公开一种白光字迹、反射增强型液晶写字板及其制备方法。该白光字迹、反射增强型液晶写字板,从上至下依次包括:单侧镀有银或铜金属网格的聚对苯二甲酸乙二醇酯(PET)透明薄膜、含有负载手性化合物介孔材料的液晶薄层、单侧镀有银或铜金属网格的PET非透明黑色薄膜。该白光增亮型液晶写字板及其制备方法,由于在液晶体系中引入负载手性化合物的介孔材料,通过控制介孔中手性化合物的扩散,使得手性化合物在液晶体系中呈现梯度或不均匀分布,造成了液晶体系螺距的梯度或不均匀分布,再经过紫外聚合锚定螺距,从而使得液晶体系的反射波宽大大扩宽,覆盖整个可见光区,使写字板的字迹为白色,并能够大幅提升亮度、对比度等关键技术指标。