Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Optical compensation birefringence liquid crystal box and manufacture method thereof

A technology of optical compensation and manufacturing method, applied in optics, nonlinear optics, instruments, etc., can solve the problems of complicated process, high operating voltage, high conversion voltage, etc. Effect

Inactive Publication Date: 2010-02-03
台湾薄膜电晶体液晶显示器产业协会 +5
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this OCB liquid crystal cell still needs a higher voltage to convert the liquid crystal in the liquid crystal cell from the splay state to the bend state, and still needs to use a higher operating voltage.
Moreover, steps such as etching and development are required, so the process is very complicated
[0008] In other words, although a variety of technologies have been proposed to accelerate the conversion of OCB liquid crystals from the splay state to the bend state, in addition to the conversion process from the splay state to the bend state, a relatively high switching voltage is still required to reach the display. drive range

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
  • Optical compensation birefringence liquid crystal box and manufacture method thereof
  • Optical compensation birefringence liquid crystal box and manufacture method thereof
  • Optical compensation birefringence liquid crystal box and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0063] First, a surface alignment film (PIA-5560-05A, Chisso) of a glass substrate was rubbed and then coated with a reactive liquid crystal monomer layer with a thickness of about 100 angstroms on the surface structure. Then, by means of UV exposure, the partial area of ​​the reactive liquid crystal monomer layer is selectively polymerized (polymerizing), and then the surface structure is cleaned with a solvent such as methyl ethyl ketone, and the reactive liquid crystal monomer layer that has not been polymerized by UV light is polymerized. removed, leaving behind a polymerized liquid crystal polymer (LCP) pattern (such as Image 6 shown). exist Image 6The liquid crystal polymer pattern is perpendicular to the alignment direction, and has linear structures 600 with a line width of about 5 μm, and the distance between the linear structures 600 is about 90 μm. Then, a piece of the glass substrate after the above treatment and the alignment substrate without the above treatm...

experiment example 2

[0068] Using the method of Experimental Example 1, a liquid crystal polymer pattern was formed on the rubbed-aligned surface structure, and the difference from Experimental Example 1 was that the line width of the linear structure was 10 μm.

experiment example 3

[0070] Using the method of Experimental Example 1, a liquid crystal polymer pattern was formed on the rubbed-aligned surface structure, and the difference from Experimental Example 1 was that the line width of the linear structure was 20 μm.

[0071] Figure 8 It is the V-T curve of the OCB type liquid crystal cell of the experimental examples 1 to 3 of the present invention. from Figure 8 It can be seen that the line width of the linear structure of the liquid crystal polymer pattern can still achieve the effect of not needing to switch from the splay state to the bend state with a slight change in the same spacing. Therefore, the method of the present invention has a wider range of process parameters (Process Window).

[0072] In addition, the above-mentioned vertical alignment liquid crystal polymer pattern can also be applied to the production of seed crystals, such as Figure 9 shown.

[0073] Figure 9 It is a top view of a partial structure of an optically compens...

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
Thicknessaaaaaaaaaa
Radiusaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an optical compensation birefringence (OCB) liquid crystal box needless in converting from splay state to bend state and a manufacture method thereof. The OCB type liquid crystal box comprises a pair of substrates, aligned surface structure and vertically arranged type liquid crystal polymer pattern, wherein one surface of one substrate is opposite to the surface of the other substrate, and the surface structure is positioned on the surface of each substrate. The vertically arranged type liquid crystal polymer pattern is formed on the surface structure of at least one substrate, so that the area of the vertically arranged type liquid crystal polymer pattern forms a mixed arrangement nematic area, a vertical arrangement area or a bend arrangement area. Due to the existence of the specific arrangement areas, the liquid crystal molecules of the splay state area generate arrangement of vertical component, and become the OCB type liquid crystal box needless in converting from splay state to bend state.

Description

technical field [0001] The present invention relates to a method for fabricating an optically compensated birefringence (OCB) type liquid crystal cell (LC display), and in particular to a method that does not require splay state to bend state transition An OCB type liquid crystal cell and a manufacturing method thereof. Background technique [0002] For the dynamic image quality requirements of liquid crystal displays, various fast-response liquid crystal display technologies are continuously proposed, one of which is an optically compensated birefringence (OCB) display mode. Because the OCB display mode has the characteristics of wide viewing angle and fast response (less than 5ms), some related technologies for OCB driving and dark state compensation have been widely studied. [0003] However, the biggest disadvantage of OCB at present is that it needs to go through a conversion process from the splay state to the bending state to reach the driving range of the display, w...

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): G02F1/139
Inventor 颜泽宇陈丁振吴雅婷
Owner 台湾薄膜电晶体液晶显示器产业协会
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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