Liquid crystal display panel and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10895780-B2
Application number	US-201816461751-A
Country	US
Kind code	B2
Filing date	Mar 28, 2018
Priority date	May 24, 2017
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

A liquid crystal display panel includes: a first substrate and a second substrate opposite to each other, and a liquid crystal layer provided between the first substrate and the second substrate. The liquid crystal display panel further includes electrodes provided on a surface of the first substrate facing the second substrate; and an optical sensing dielectric layer provided on the electrodes. The insulativity of the optical sensing dielectric layer decreases as light received from a backlight source corresponding to the liquid crystal display panel increases.

First claim

What is claimed is:

1. A liquid crystal display panel, comprising: a first substrate and a second substrate that are disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate; the liquid crystal display panel further comprising:
electrodes disposed on a surface of the first substrate facing toward the second substrate, wherein the electrodes are pixel electrodes and/or common electrodes; and
an optical sensing dielectric layer disposed on the electrodes, wherein the optical sensing dielectric layer is configured such that an insulativity of the optical sensing dielectric layer decreases as light received from a backlight source corresponding to the liquid crystal display panel increases.

2. The liquid crystal display panel according to claim 1 , wherein, the optical sensing dielectric layer is optically transparent.

3. The liquid crystal display panel according to claim 1 , wherein, a material of the optical sensing dielectric layer includes a polymer doped with metal particles.

4. The liquid crystal display panel according to claim 3 , wherein, the metal particles are silver particles or aluminum particles.

5. The liquid crystal display panel according to claim 3 , wherein, the diameters of the metal particles range from 200 nm to 2000 nm.

6. The liquid crystal display panel according to claim 3 , wherein, the diameters of the metal particles range from approximately 200 nm to approximately 2000 nm.

7. The liquid crystal display panel according to claim 1 , wherein, a material of the optical sensing dielectric layer includes a polymer doped with a metal complex.

8. The liquid crystal display panel according to claim 7 , wherein, the metal complex includes a zinc complex, a copper complex or an aluminum complex.

9. A method of manufacturing a liquid crystal display panel, comprising:
forming electrodes provided with an optical sensing dielectric layer on the first substrate, wherein the electrodes are pixel electrodes and/or common electrodes, and the optical sensing dielectric layer is configured such that an insulativity of the optical sensing dielectric layer decreases as luminance of a backlight source corresponding to the liquid crystal display panel increases;
dipping liquid crystals on a surface of the first substrate on which a functional film layer is located or a surface of the second substrate on which a functional film layer is located; and
aligning the surface of the first substrate on which the functional film layer is located and the surface of the second substrate on which the functional film layer is located, and sealing the first substrate and the second substrate, so as to obtain the liquid crystal display panel.

10. The method of manufacturing the liquid crystal display panel according to claim 9 , wherein, the optical sensing dielectric layer is optically transparent.

11. The method of manufacturing the liquid crystal display panel according to claim 9 , wherein, sealing the first substrate and the second substrate refers to sealing a frame of a liquid crystal cell formed by aligning.

12. The method of manufacturing the liquid crystal display panel according to claim 9 , wherein, before forming electrodes provided with the optical sensing dielectric layer on the first substrate, the method further comprises: providing the first substrate and the second substrate.

13. The method of manufacturing the liquid crystal display panel according to claim 9 , wherein, forming electrodes provided with the optical sensing dielectric layer on the first substrate, includes:
forming a light-transmissive conductive layer on the first substrate, and forming the electrodes via a patterning process; and
forming a light-transmissive optical sensing thin film on the electrodes, and forming the optical sensing dielectric layer via a patterning process.

14. The method of manufacturing the liquid crystal display panel according to claim 9 , wherein, forming electrodes provided with the optical sensing dielectric layer on the first substrate, includes:
forming a light-transmissive conductive layer on the first substrate, and forming a light-transmissive optical sensing thin film on the light-transmissive conductive layer, and then forming the electrodes and the optical sensing dielectric layer via an one-time patterning process.

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd

Inventors

• Guo Yuanhui

Classifications

• G02F1/13439 Primary

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133603 Primary

  with LEDs · CPC title

• G02F2202/12

  photoconductor · CPC title

• G02F1/133611

  including means for improving the brightness uniformity · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title