Frame-sealing agent, display panel and display device

Patent metadata

Field	Value
Publication number	US-9803117-B2
Application number	US-201414339560-A
Country	US
Kind code	B2
Filing date	Jul 24, 2014
Priority date	Mar 19, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The invention discloses a frame-sealing agent, a display panel and a display device. The frame-sealing agent comprises an acrylic resin, an epoxy resin, a thermal curing agent and an ultraviolet photoinitiator, wherein the frame-sealing agent further comprises a compound which decomposes to produce a gas under a condition of light irradiation, heating or high temperature. In the invention, by providing a compound that decomposes to produce a gas under a condition of light irradiation, heating or high temperature, when the frame-sealing agent is cured, the compound decomposes to produce a gas with the effect of light irradiation, heating or high temperature. The light leak of the display screen at the position of backlight is obstructed by the gas. Additionally, the pressure of the gas can retard the diffusion of liquid crystal molecules, so that the contamination of the liquid crystal caused by the too early contact between the liquid crystal and the frame-sealing agent and the relevant display badness are avoided.

First claim

What is claimed is:

1. A display panel comprising a first substrate, a second substrate, and a frame-sealing agent cured between the first substrate and the second substrate, wherein the frame-sealing agent comprises an acrylic resin, an epoxy resin, a thermal curing agent, an ultraviolet photoinitiator, a silver halide wherein the halogen is Cl, Br or I, and at least one selected from the group consisting of ammonium carbonate, potassium permanganate, potassium chlorate and ethylbenzene.

2. The display panel of claim 1 , wherein when the frame-sealing agent comprises ethylbenzene, the frame-sealing agent further comprises a catalyst.

3. The display panel of claim 2 , wherein the catalyst is CuO.

4. The display panel of claim 1 , wherein the display panel is a liquid crystal display panel further comprising a liquid crystal layer disposed between the first substrate and the second substrate; and after being cured, the frame-sealing agent forms a supporting structure provided at the periphery of the liquid crystal layer.

5. The display panel of claim 4 , wherein an outer layer frame-sealing agent is further formed at the periphery of the supporting structure, and the outer layer frame-sealing agent is provided between the first substrate and the second substrate, and the outer layer frame-sealing agent consists of an acrylic resin, an epoxy resin, a thermal curing agent and an ultraviolet photoinitiator.

6. A display device, comprising the display panel of claim 1 .

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Wang Yupeng
• Zhan Hongming
• Zhang Honglin
• Tian Chao

Classifications

• Y10T428/1077

  Cross-Sectional Technologies · mapped topic

• C09K3/1006 Primary

  characterised by the chemical nature of one of its constituents · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• Y10T428/1059

  Cross-Sectional Technologies · mapped topic

• C09K2200/0625

  Polyacrylic esters or derivatives thereof · CPC title