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

Active cholesteric liquid crystal display screen realized by thin film transistor substrate, and method thereof

A thin film transistor, cholesteric liquid crystal technology, used in nonlinear optics, instruments, optics, etc.

Pending Publication Date: 2020-02-21
南京华日触控显示科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not suitable for electronic tags and electronic paper devices

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
  • Active cholesteric liquid crystal display screen realized by thin film transistor substrate, and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) On the glass substrate, row scanning lines and column addressing lines, thin-film crystal TFT active device switches and pixel electrodes are photolithographically produced to produce a thin-film transistor TFT substrate.

[0028] 2) Lithograph the common electrode on another ITO glass to make a common electrode substrate.

[0029] 3) Print liquid crystal alignment liquid 70% AL-58 on the thin film transistor TFT substrate and the common electrode substrate, with a thickness of 700 angstroms, and heat it to 150 after printing o After C is cured, a liquid crystal alignment film is formed.

[0030] 4) Screen-print the frame glue XN-5A-C around the thin-film transistor TFT substrate with a thickness of 7 um, and spray a 4.0 um-diameter gasket NM ASE 040 on the substrate with a density of 250 pieces / mm 2 .

[0031] 5) Print the transfer point gold ball NM GD045 on the common electrode substrate.

[0032] 6) Lay together the thin film transistor TFT substrate and the c...

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
Login to View More

Abstract

The invention relates to an active cholesteric liquid crystal display screen realized by a thin film transistor substrate. An upper common electrode substrate and a lower thin film transistor TFT substrate are fixed through a frame glue and a gasket, so that a glass liquid crystal box is formed; a row scanning line and a column addressing line need to be photo-etched on the lower thin film transistor TFT substrate; a thin film transistor TFT active device switch and a pixel electrode are manufactured; an electrode on the upper common electrode substrate is transferred onto the lower thin filmtransistor TFT substrate through a transfer point; a liquid crystal alignment film and cholesteric liquid crystal are added between an upper liquid crystal alignment film and a lower liquid crystal alignment film; a driving chip IC and a flexible circuit connection board FPC are respectively bound on the electrode of the lower thin film transistor TFT substrate through anisotropic conductive strips IC ACF and FPC ACF; and finally, a black light absorption film is stuck on the lower surface of the lower thin film transistor TFT substrate. The active cholesteric liquid crystal display screen realized by the thin film transistor substrate has the advantages of having a bistable effect, being rapid in response speed, high in contrast ratio, free from a cross effect between pixels and the like;and simultaneously, by utilization of the existing TFT production line, batch production is easily carried out.

Description

technical field [0001] The invention relates to an active cholesteric liquid crystal display screen realized by a thin film transistor substrate and a method thereof, belonging to the technical field of liquid crystal display screens. Background technique [0002] Cholesteric liquid crystal is a kind of liquid crystal domain with random helical axis orientation in space. The liquid crystal display screen made of it can still maintain the display function after power off, and its state will not change before the next voltage pulse arrives. It has dual Steady-state effect, so it is widely used in electronic tags and electronic handwritten paper. Conventional thin film transistor TFT liquid crystal displays have no bistable function, and the power consumption is too large, and conventional thin film transistor TFT liquid crystal displays are usually transmissive and need to be displayed with a backlight. Not suitable for electronic tags and electronic paper devices. Conten...

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): G02F1/139G02F1/137G02F1/1362
CPCG02F1/13718G02F1/1391G02F1/136286
Inventor 权建华周小军周学秀
Owner 南京华日触控显示科技有限公司
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