Supercharge Your Innovation With Domain-Expert AI Agents!

Friction method, device, alignment film and producing method for optical member

A manufacturing method and technology of orientation film, applied in optics, nonlinear optics, instruments, etc., can solve problems such as poor orientation, and achieve the effect of solving bright spot defects

Active Publication Date: 2010-12-22
FUJIFILM CORP
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention is conducted in view of the above-mentioned problems, and an object thereof is to provide a rubbing method, device, alignment film, and optical member capable of solving both problems of bright spot defects due to poor orientation and bright spot defects due to dust. manufacturing method

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
  • Friction method, device, alignment film and producing method for optical member
  • Friction method, device, alignment film and producing method for optical member
  • Friction method, device, alignment film and producing method for optical member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0104] Example A is an experiment to investigate the relationship between the degree of curvature of the pile yarn 4 (the ratio of the length B to the total length A) and the number of bright spots detected (number / m) of the optical compensation film.

[0105] (manufacture of optical compensation film)

[0106] Long-chain alkyl-modified polyvinyl alcohol ( MP-203, a 5% solution of Clare Co., Ltd., was dried at 90° C. for 4 minutes and then rubbed to form an alignment film forming layer of 2.0 μm. The conveying speed of the fabric 16 was 20 m / min.

[0107] Next, the fabric 16 on which the alignment film forming layer 19 is formed is sent to the antechamber 20 adjusted to a relative humidity of 70%, and the fabric 16 is sent to the rubbing chamber 22 after being humidified. Then, while the fabric 16 was continuously conveyed at a speed of 20 m / min on the rubbing device 70 , rubbing was applied to the surface of the alignment film forming layer 19 . During rubbing, the rotatio...

Embodiment B

[0132] The experiment of embodiment B is to simultaneously solve the problems of the number of bright spots caused by poor orientation and the number of bright spots caused by dust. ) has a fundamental solution, but for experimental confirmation that the curvature of the pile yarn 4 described in the present invention has a fundamental solution.

[0133] Test method and assay method are identical with embodiment A.

[0134] "test results"

[0135] The test results are in Figure 11 shown in the table.

[0136] Test 4 is a test in which the results of Example A were directly included, and rubbing treatment was performed under the condition of an inclination angle of 15°.

[0137] In Test 8, the rubbing treatment was performed by setting the angle of inclination of the pile yarn 4 to 5° smaller than that in Test 4 while maintaining the curvature of the pile yarn 4 at 78% which satisfies the conditions of the present invention.

[0138] In Test 9, the inclination angle of the ...

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

No PUM Login to View More

Abstract

The invention provides a friction method, a device, an alignment film and a producing method for optical member, which can resolve the spot defect both caused by bad alignment and dust. The friction method comprises steps of rolling back a cloth for friction (1); rolling fabric (16) moving continuously by rotating friction rollers (70A, 70B); forming an alignment film formed layer (19) on the fabric by using the cloth for friction (1); forming the alignment film. The friction method is characterized in that the cloth for friction (1) is formed by weaving pile yarns (4) into a base fabric (5) combining warp and weft of the bottom cloth; when the friction flexibility of pile yarns (4) is expressed by the ratio (B / A) multiply 100 of length A of the pile yarns (4) before friction to length B from the base cloth (5) surface to the alignment film formed layer (19) surface, friction is conducted after the ratio is set at the range of 60-90%.

Description

technical field [0001] The present invention relates to a rubbing (rabinge) method, device, manufacturing method of an alignment film and an optical member, and in particular to a method capable of suppressing dust generation and sufficiently rubbing an alignment film forming layer when manufacturing an optical member used in a liquid crystal display device. Technology. Background technique [0002] Various optical components are used in liquid crystal display devices, such as components used as polarizers, and optical compensation films that expand the field of view. This kind of optical compensation film is generally coated with a coating solution for orientation on the surface of a transparent resin belt-shaped flexible support, dried to form an orientation film forming layer, and then rubbed on its surface, thereby An alignment film is formed. Then, a liquid crystalline coating liquid is applied on the surface of the alignment film, dried to form a liquid crystal layer...

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
IPC IPC(8): G02F1/1337
Inventor 小川贤二坂本真澄
Owner FUJIFILM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com