Liquid crystal display (LCD) panel, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-9638969-B2
Application number	US-201514837080-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Mar 18, 2015
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A liquid crystal display (LCD) panel, a manufacturing method thereof and a display device are provided. The LCD panel includes an array substrate and a color filter substrate which are cell-assembled. Liquid crystals are filled between the array substrate and the color filter substrate. A sealant is disposed between peripheral areas of the array substrate and the color filter color filter substrate to seal the array substrate and the color filter substrate, wherein an electrostatic protection layer is also disposed at the peripheral area of the array substrate and configured to cover a peripheral circuit at the peripheral area of the array substrate to provide electrostatic protection for the peripheral circuit.

First claim

The invention claimed is:

1. A liquid crystal display (LCD) panel, comprising an array substrate and a color filter substrate which are cell-assembled,
wherein liquid crystals are filled between the array substrate and the color filter substrate;
a sealant is disposed between peripheral areas of the array substrate and the color filter substrate to seal a cell formed by the array substrate and the color filter substrate; and
an electrostatic protection layer is further disposed at the peripheral area of the array substrate and configured to cover a peripheral circuit provided at the peripheral area of the array substrate to provide electrostatic protection for the peripheral circuit;
wherein a plurality of mutually nested annular support structures are disposed at the peripheral area of the color filter substrate; each of the annular support structures is formed by a plurality of post-spacers encircling a periphery of a display area of the color filter substrate; and the post-spacers in two adjacent annular support structures are staggered with each other; and
each of the annular support structures includes a main post-spacer and an auxiliary post-spacer of which the height is less than that of the main post-spacer; the surface of the electrostatic protection layer on the array substrate is concave-convex;
said main post-spacer is directly opposite to a concave area on the surface of the electrostatic protection layer; and
said auxiliary post-spacer is directly opposite to a convex area on the surface of the electrostatic protection layer.

2. The LCD panel according to claim 1 , wherein the electrostatic protection layer is made from black photoresist; and the electrostatic protection layer is disposed in an area except the sealant at the peripheral area of the array substrate.

3. The LCD panel according to claim 1 , wherein a color filter layer and a black matrix layer are disposed in the display area of the color filter substrate; the black matrix layer is also disposed at a position, directly opposite to the sealant, on the peripheral area of the color filter substrate; and the surface of an area of the black matrix layer making contact with the sealant is concave-convex.

4. A display device, comprising the LCD panel according to claim 1 .

5. A method for manufacturing a liquid crystal display (LCD) panel, comprising:
forming an electrostatic protection layer at a peripheral area of an array substrate, in which the electrostatic protection layer is configured to cover a peripheral circuit at the peripheral area of the array substrate to provide electrostatic protection for the peripheral circuit;
coating a sealant on the peripheral area of one of the array substrate and the color filter substrate, dropping liquid crystal on the other substrate, and allowing the array substrate and the color filter substrate to be cell-assembled; and
performing a curing process on the sealant to seal a cell formed by the array substrate and the color filter substrate;
wherein a plurality of mutually nested annular support structures are formed at the peripheral area of the color filter substrate; each of the annular support structures is formed by a plurality of post-spacers encircling the periphery of a display area of the color filter substrate; and post-spacers in two adjacent annular support structures are staggered with each other; and
each annular support structure includes a main post-spacer and an auxiliary post-spacer of which the height is less than that of the main post-spacer;
the surface of the electrostatic protection layer on the array substrate is concave-convex; and after the color filter substrate and the array substrate are cell-assembled, the main post-spacer is directly opposite to a concave area on the surface of the electrostatic protection layer, and the auxiliary post-spacer is directly opposite to a convex area on the surface of the electrostatic protection layer.

6. The method for manufacturing the LCD panel according to claim 5 , wherein the electrostatic protection layer is made from black photoresist and formed in an area except the sealant on the peripheral area of the array substrate after the cell-assembly.

7. The method for manufacturing the LCD panel according to claim 5 , wherein a color filter layer and a black matrix layer are formed in a display area of the color filter substrate; the black matrix layer is also formed at a position, directly opposite to the sealant, on the peripheral area of the color filter substrate; and the surface of an area of the black matrix layer making contact with the sealant is concave-convex after the color filter substrate and the array substrate are cell-assembled.

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Sun Dongling

Classifications

• G02F1/133514

  Colour filters · CPC title

• G02F1/136204 Primary

  Arrangements to prevent high voltage or static electricity failures · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• H05K9/002

  with localised screening · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title