Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Liquid-crystal display device

A technology of liquid crystal display device and liquid crystal layer, applied in optics, instruments, nonlinear optics, etc., can solve the problems of reduced production adaptability and difficulty in realization

Inactive Publication Date: 2010-07-21
FUJIFILM CORP
View PDF19 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, production suitability may be reduced, and the method is difficult to implement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid-crystal display device
  • Liquid-crystal display device
  • Liquid-crystal display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0238] "Preparation method of roll optical film"

[0239] The optical film can be prepared according to the continuous process of the following steps (1) to (4):

[0240] Step (1): A long continuous polymer film for at least the second optically anisotropic layer is conveyed in the length direction while rubbing the surface of the film or the surface of an alignment film formed on the film surface with a rubbing roll.

[0241] Step (2): Applying a liquid crystal compound-containing coating liquid onto the rubbed surface.

[0242] Step (3): drying the coating liquid coated on the surface, while or after drying, orienting the molecules of the liquid crystal compound at a temperature not lower than the liquid crystal transition temperature of the liquid crystal compound, and fixing the orientation to form the first optical each Anisotropic layer.

[0243] Step (4): Winding up a long and continuous optical film in which the first optically anisotropic layer is formed on the poly...

Embodiment 1

[0331] 1.-1 Formation of the third optically anisotropic layer

[0332]

[0333] Cellulose acetate solution A was prepared by placing the following components in a mixing tank, stirring under heating, and dissolving each component.

[0334] Composition of Cellulose Acetate Solution A

[0335] ・100 parts by mass of cellulose acetate with a degree of acetylation of 60.9%

[0336] 7.8 parts by mass of triphenyl phosphate

[0337] 3.9 parts by mass of biphenyl diphenyl phosphate

[0338] 300 parts by mass of dichloromethane

[0339] 45 parts by mass of methanol

[0340]4 parts by mass of cellulose acetate with an acetylation degree of 60.9% (lint), 25 parts by mass of the retardation enhancer shown below, 0.5 parts by mass of silica fine particles (average particle diameter: 20 nm), 80 parts by mass of Dichloromethane and 20 parts by mass of methanol were put into another mixing tank and stirred under heating to prepare a retardation enhancer solution.

[0341] Latency Enh...

Embodiment 2～9

[0417] An OCB mode liquid crystal display device was prepared and evaluated in the same manner as in Example 1, however, the TAC film used as the second optically anisotropic layer was replaced with a TAC film having properties shown in Table 1 and / or used as the third optically anisotropic layer. Anisotropic layer of TAC film.

[0418] The Re and Rth of the TAC film were controlled by changing the conditions of the biaxial stretching treatment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
phase transition temperatureaaaaaaaaaa
saponificationaaaaaaaaaa
saponificationaaaaaaaaaa
Login to View More

Abstract

A liquid-crystal display device comprising a liquid-crystal cell and at least three optically-anisotropic layers disposed on each side of the liquid crystal cell, wherein they are combined so that the deltand value of the liquid-crystal cell and the optical characteristics of the optically-anisotropic layers can satisfy predetermined relationships, is disclosed.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a liquid crystal display device in bend alignment or vertical alignment mode. Background technique [0002] A liquid crystal display device (LCD) including a liquid crystal cell in a bend alignment mode in which rod-like liquid crystal molecules are aligned in substantially opposite directions (symmetrically) at the upper and lower parts of the liquid crystal cell has been proposed (see USP 4583825 and 5410422). The bend alignment mode is characterized by a wider viewing angle and faster response speed than general liquid crystal modes such as TN mode and STN mode. In addition, since the liquid crystal cell in the bend alignment mode has a self-optical compensation function, it is called an OCB (Optically Compensatory Bend) liquid crystal mode. [0003] As a bend alignment mode liquid crystal display device improved in viewing angle characteristics, a bend alignment mod...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02B5/30G02F1/1337
CPCG02F2413/08G02F2202/28G02F2413/04G02F1/1393G02F2001/133635G02B5/3083G02F2413/105G02F1/133635
Inventor 大室克文中村俊
Owner FUJIFILM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com