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

Liquid crystal display device manufacturing method

A technology of a liquid crystal display device and a manufacturing method, which is applied in the directions of printing, optics, instruments, etc., can solve the problems that the quality of the liquid crystal cannot be sufficiently improved, and the size of the droplet becomes larger.

Inactive Publication Date: 2008-07-16
SEKISUI CHEM CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in this method, there is a problem that since spacer particles of about 1 to 10 μm are contained in the spacer particle dispersion liquid to be ejected, it is necessary to increase the nozzle diameter of the inkjet head in order to eject straightly. As a result, the size of the liquid droplets sprayed on the substrate will become larger. Even if the spray is aimed at the light-shielding area, the liquid droplets will be squeezed out from the light-shielding area to the pixel area, which will cause the isolation particles to be allocated to the transmission area. LCD quality such as contrast ratio

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 manufacturing method
  • Liquid crystal display device manufacturing method
  • Liquid crystal display device manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-13

[0208] Using the spacer particle dispersion and the substrate shown in Table 1, liquid crystal display elements were produced by the following method.

[0209] (Modulation of isolated particles)

[0210]In a separable flask, 15 parts by weight of divinylbenzene, 5 parts by weight of isooctyl acrylate, 1.3 parts by weight of benzoyl peroxide as a polymerization initiator were uniformly mixed, and then polyvinyl alcohol (GL-03 , Kuraray Co., Ltd.)'s 3% aqueous solution 20 parts by weight, sodium lauryl sulfate 0.5 parts by weight, fully stirred, and then added 140 parts by weight of ion-exchange water. While stirring this solution, it was reacted at 80°C for 15 hours under a nitrogen stream. The obtained particles are washed with hot water and acetone, and then a classification operation is performed to volatilize the acetone to obtain isolation particles (S). The average particle diameter of the obtained particles was 4 μm, and the CV value was 3.0%.

[0211] (Surface modification ...

Embodiment 14-26

[0252] (Modulation of isolated particles)

[0253] In a separable flask, 15 parts by weight of divinylbenzene, 5 parts by weight of isooctyl acrylate, 1.3 parts by weight of benzoyl peroxide as a polymerization initiator were uniformly mixed, and then polyvinyl alcohol (GL-03 , Kuraray Co., Ltd.)'s 3% aqueous solution 20 parts by weight, sodium lauryl sulfate 0.5 parts by weight, fully stirred, and then added 140 parts by weight of ion-exchange water. While stirring this solution, it was reacted at 80°C for 15 hours under a nitrogen stream. The obtained particles were washed with hot water and acetone, and then subjected to a classification operation to obtain spacer particles having an average particle diameter of 4.0 μm and a CV value of 3.0%.

[0254] (Surface modification of isolated particles)

[0255] Put 5 parts by weight of the obtained spacer particles into 20 parts by weight of dimethyl sulfoxide (DMSO), 2 parts by weight of hydroxymethyl methacrylate, and 18 parts by we...

Embodiment 27-46 and comparative example 1-4

[0310] (Production of isolated seed particles)

[0311] Into the separable flask, 15 parts by weight of divinylbenzene, 5 parts by weight of isooctyl acrylate, and 1.3 parts by weight of benzoyl peroxide as a polymerization initiator were put into the separable flask, and they were uniformly stirred and mixed.

[0312] Then, 20 parts by weight of a 3% by weight aqueous solution of polyvinyl alcohol (trade name "Kuraray Paba-LU GL-03", manufactured by Kuraray) and 0.5 parts by weight of sodium lauryl sulfate were added, mixed uniformly, and then ion-exchanged water was added 140 parts by weight.

[0313] Next, while stirring the mixed aqueous solution under a nitrogen stream, a polymerization reaction was performed at 80° C. for 15 hours to obtain fine particles. The obtained fine particles are thoroughly washed with hot water and acetone, and then the classification operation is carried out to volatilize the acetone, thereby producing isolation seed particles (α). The average part...

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
boiling pointaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The liquid crystal display comprises pixel regions arranged according to a fixed pattern and the light shielding region demarcating the pixel regions and is manufactured by opposing the substrate formed by ejecting a spacer particle dispersion liquid in which the spacer particles are dispersed by using the ink jet device and disposing the spacer particles in a region corresponding to the light shielding region to a substrate on which the spacer particles are not disposed via the spacer particles disposed in the region corresponding to the light shielding region and a liquid crystal. In the manufacture of the liquid crystal display, liquid drops of the spacer particle dispersion liquid are landed so as to include a step difference part formed in the region corresponding to the light shielding region of at least one substrate and the spacer particles are made to stay within the region corresponding to the light shielding region.

Description

[0001] This application is a divisional application of the PCT international application with the application number 200480016569.1 (PCT / JP2004 / 008325) and the invention title "Method for Manufacturing Liquid Crystal Display Device" filed by the applicant on June 14, 2004. Technical field [0002] The present invention relates to a method for manufacturing a liquid crystal display device capable of selectively arranging spacer particles in a light-shielding area (non-display portion) of a substrate for a liquid crystal display device or a region corresponding to the light-shielding area using an inkjet device, By this method, it is possible to obtain a liquid crystal display device that does not generate depolarization phenomenon caused by spacer particles or does not reduce contrast and color tone due to dark dots (dead dots), and can exhibit excellent display quality. Background technique [0003] Liquid crystal display devices are currently widely used in personal computers, po...

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): G02F1/1339G02F1/1333B41J2/01
Inventor 上田伦久
Owner SEKISUI CHEM CO LTD
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