Liquid crystal panel and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-11209680-B2
Application number	US-201816462124-A
Country	US
Kind code	B2
Filing date	Nov 22, 2018
Priority date	Oct 23, 2018
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A liquid crystal panel and a method for manufacturing the liquid crystal panel is provided. The liquid crystal panel includes an upper substrate and a lower substrate disposed opposite to each other, a plurality of color resistances disposed on a side of the upper substrate facing the lower substrate, and a frame adhesive and a liquid crystal layer disposed between the upper substrate and the lower substrate; a plurality of display regions are enclosed between the upper substrate and the lower substrate by the frame adhesive; each display region includes one color resistance, each color resistance includes one numerical hollow pattern, and the numerical hollow pattern of each color resistance is not same as others; the liquid crystal layer includes a plurality of liquid crystals disposed in the display regions; a clearing point temperature of the liquid crystal of each different display region is not same as others.

First claim

What is claimed is:

1. A liquid crystal panel, comprising: an upper substrate and a lower substrate disposed opposite to each other, a plurality of color resistances disposed on a side of the upper substrate facing the lower substrate, and a frame adhesive and a liquid crystal layer disposed between the upper substrate and the lower substrate;
wherein a plurality of display regions are enclosed between the upper substrate and the lower substrate by the frame adhesive;
each display region comprises one color resistance, each color resistance comprises one numerical hollow pattern, and the numerical hollow pattern of each color resistance is not same as others; and
the liquid crystal layer comprises a plurality of liquid crystals disposed in the display regions; a clearing point temperature of the liquid crystal of each different display region is not same as others.

2. The liquid crystal panel of claim 1 , further comprising a polarizer disposed on a side of the upper substrate away from the lower substrate, a quarter wave plate disposed between the upper substrate and the polarizer, and a reflecting layer disposed on a side of the lower substrate facing the upper substrate.

3. The liquid crystal panel of claim 2 , further comprising a protecting layer formed on the upper substrate covering the plurality of color resistances, a first alignment film formed on the protecting layer, and a second alignment film formed on the reflecting layer.

4. The liquid crystal panel of claim 1 , wherein when a clearing point temperature of the liquid crystal of one display region is less than or equal to an environment temperature, the liquid crystal loses an optical rotation to light, and the numerical hollow pattern of the color resistance of the display region is not displayed; when a clearing point temperature of the liquid crystal of one display region is great than or equal to the environment temperature, the liquid crystal shows an optical rotation to light, and the numerical hollow pattern of the color resistance of the display region is displayed normally.

5. The liquid crystal panel of claim 1 , wherein the color resistances are arranged horizontally or vertically; a number corresponding to the numerical hollow pattern of the color resistances which is close to a short edge of the upper substrate is N, wherein N is defined as a positive integer, the clearing point temperature of the liquid crystal placed in one display region same as where one color resistance corresponding to the number N placed is N+1° C.

6. The liquid crystal panel of claim 5 , wherein a difference value of the numbers corresponding to the numerical hollow patterns of the two adjacent color resistances is 5-10.

7. A method for manufacturing a liquid crystal panel, comprising:
Step S 1 , providing an upper substrate, forming a plurality of color resistances spacing from each other on the upper substrate, and forming a plurality of numerical hollow patterns on the color resistances by an etching process, wherein the numerical hollow pattern of each color resistance is not same as others;
Step S 2 , forming a frame adhesive on the upper substrate, enclosing a plurality of display regions by the frame adhesive, wherein each display region comprises one color resistance; forming a protecting layer on the color resistances and forming a first alignment film on the protecting layer;
Step S 3 , providing a lower substrate, forming a reflecting layer on the lower substrate, and forming a second alignment film on the reflecting layer;
Step S 4 , aligning the first alignment film and the second alignment film, and dropping liquid crystals with different clearing point temperatures into the display regions to form a liquid crystal layer;
Step S 5 , coupling a side surface of the upper substrate with the color resistances to a side surface of the lower substrate with the reflecting layer; and
Step S 6 , disposing a quarter wave plate and a polarizer successively on a side of the upper substrate away from the lower substrate.

8. The method for manufacturing the liquid crystal panel of claim 7 , wherein when a clearing point temperature of the liquid crystal of one display region is less than or equal to an environment temperature, the liquid crystal loses an optical rotation to light, and the numerical hollow pattern of the color resistance of the display region is not displayed; when a clearing point temperature of the liquid crystal of one display region is great than or equal to the environment temperature, the liquid crystal shows an optical rotation to light, and the numerical hollow pattern of the color resistance of the display region is displayed normally.

9. The method for manufacturing the liquid crystal panel of claim 7 , wherein the color resistances are arranged horizontally or vertically; a number corresponding to the numerical hollow pattern of the color resistances which is close to a short edge of the upper substrate is N, wherein N is defined as a positive integer, the clearing point temperature of the liquid crystal placed in one display region same as where one color resistance corresponding to the number N placed is N+1° C.

10. The method for manufacturing the liquid crystal panel of claim 9 , wherein a difference value of the numbers corresponding to the numerical hollow patterns of the two adjacent color resistances is 5-10.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Li Bangrong

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F1/133377

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title

• G02F1/133374

  for displaying permanent signs or marks · CPC title

• G02F1/132 Primary

  Thermal activation of liquid crystals exhibiting a thermo-optic effect · CPC title

• G01K1/028

  arrangements for numerical indication · CPC title