Sealant, manufacturing method therefor, liquid crystal display panel and display device

Patent metadata

Field	Value
Publication number	US-11262623-B2
Application number	US-201816078702-A
Country	US
Kind code	B2
Filing date	Jan 17, 2018
Priority date	Jul 21, 2017
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A sealant, a manufacturing method therefor, a liquid crystal display (LCD) panel and a display device are provided. The sealant includes a sealant matrix and luminescent particulates distributed in the sealant matrix. The luminescent particulates at least emit ultraviolet (UV) light under UV irradiation.

First claim

What is claimed is:

1. A method for preparing a sealant, comprising:
providing a sealant matrix;
obtaining a mixed solution by adding SrCO 3 , MgO, H 2 SiO 3 and Ce(NO 3 ) 3 into a TbCl 3 solution according to a molar ratio of 2:1:3:1;
obtaining a mixture by adding a sintering aid into the mixed solution and drying the mixed solution at a constant temperature after stirring;
performing high-temperature calcination after grinding the mixture;
obtaining luminescent particulates of Sr 2 MgSi 3 O 9 :Ce 3+ ,Tb 3+ material by grinding the mixture obtained after the high-temperature calcination; and
forming the sealant by mixing and stirring the luminescent particulates and the sealant matrix, in which the luminescent particulates at least emit UV light under UV irradiation.

2. The method according to claim 1 , further comprising:
obtaining a second mixed solution by adding SrCO 3 , SrCl 2 .6H 2 O and H 3 BO 3 into a Ce 2 (SO 4 ) 3 solution according to a molar ratio of 1:1:5;
obtaining a second mixture by adding a sintering aid into the second mixed solution and drying the second mixed solution at a constant temperature after stirring;
performing high-temperature calcination after grinding the second mixture; and
obtaining luminescent particulates of Sr 2 B 5 O 9 Cl:Ce 3+ material by grinding the second mixture obtained after the performing the high-temperature calcination.

3. The method according to claim 1 , further comprising: before the forming the sealant by mixing and stirring the luminescent particulates and the sealant matrix, forming a protective layer on surfaces of the luminescent particulates.

4. The method according to claim 3 , wherein the forming the protective layer on the surfaces of the luminescent particulates comprises:
obtaining a preliminary mixed solution by adding the luminescent particulates and Al 2 O 3 and/or SiO 2 into alcohol; and
heating to burn the preliminary mixed solution after adding an incendiary agent into the preliminary mixed solution, and forming an Al 2 O 3 protective layer and/or a SiO 2 protective layer on the surfaces of the luminescent particulates.

5. A method for preparing a sealant comprising:
providing a sealant matrix;
obtaining a mixed solution by adding Li 2 CO 3 , SrCO 3 and H 2 BO 3 into a TbCl 3 solution according to a molar ratio of 1:8:6;
obtaining a mixture by adding a sintering aid into the mixed solution and drying the mixed solution at a constant temperature after stirring;
performing high-temperature calcination after grinding the mixture;
obtaining luminescent particulates of LiSr 4 (BO 3 ) 3 :Tb 3+ material by grinding the mixture obtained after the performing the high-temperature calcination; and
forming the sealant by mixing and stirring the luminescent particulates and the sealant matrix, in which the luminescent particulates at least emit UV light under UV irradiation.

6. A method for preparing a sealant comprising:
providing a sealant matrix;
obtaining a mixed solution by adding Na 2 CO 3 , SrCO 3 and H 2 BO 3 into a TbCl 3 solution according to a molar ratio of 1:8:6;
obtaining a mixture by adding a sintering aid into the mixed solution and drying the mixed solution at a constant temperature after stirring;
performing high-temperature calcination after grinding the mixture;
obtaining luminescent particulates of NaSr 4 (BO 3 ) 3 :Tb 3+ material by grinding the mixture obtained after the performing the high-temperature calcination; and
forming the sealant by mixing and stirring the luminescent particulates and the sealant matrix, in which the luminescent particulates at least emit UV light under UV irradiation.

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Sun Dongling

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133617

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F2201/086

  UV absorbing · CPC title