Display panel and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10712604-B2
Application number	US-201715798707-A
Country	US
Kind code	B2
Filing date	Oct 31, 2017
Priority date	Oct 31, 2016
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

The present invention provides a display panel and a method for manufacturing the same. The method comprises steps of forming a black matrix and forming a sealant, wherein the black matrix layer contains a thermochromic material at the position corresponding to the sealant, so that when the sealant is cured with ultraviolet light, the thermochromic material layer is transparent. In such case, a side of the first substrate away from the sealant can be irradiated and ultraviolet light passes through the first substrate and the thermochromic material to cure the sealant, thus achieving a uniform irradiation of ultraviolet light and a high curing efficiency. After the sealant is cured, the thermochromic material can become black by changing the temperature thereof so as to avoid the light leakage.

First claim

The invention claimed is:

1. A method for manufacturing a display panel, characterized by comprising steps of:
forming a black matrix on a first substrate;
disposing a sealant;
curing the sealant by irradiating from a side of the first substrate away from the sealant, wherein a thermochromic material keeps transparent before the completion of the curing; and
making the thermochromic material black by changing the thermochromic material's temperature,
wherein the step of forming a black matrix on a first substrate comprises: forming the black matrix in a non-display region with a black material and making a position corresponding to the sealant in the black matrix being blank; and
the step of disposing a sealant comprises: disposing a sealant containing the thermochromic material and disposing a sealant without the thermochromic material, wherein the sealant containing the thermochromic material is only disposed at the blank position, whereas the sealant without the thermochromic material is disposed at an edge position between the black matrix layer and a second substrate,
wherein an orthographic projection of the sealant containing the thermochromic material on the first substrate overlaps with an orthographic projection of the sealant without the thermochromic material in a plane parallel with the first substrate, whereas the orthographic projections of the sealants do not overlap with an orthographic projection of the black matrix on the first substrate.

2. The method for manufacturing a display panel according to claim 1 , characterized in that, the sealant containing the thermochromic material further includes a sealant base material, wherein the mass ratio of the sealant base material to the thermochromic material is 1: (0.01-0.2).

3. The method for manufacturing a display panel according to claim 1 , characterized in that, making a position corresponding to the sealant in the black matrix being blank comprises: directly forming the blank position at the time of forming the black matrix in the non-display region using a mask plate; or firstly forming the black matrix in the non-display region and then photoetching and developing the black matrix at the position corresponding to the sealant so as to remove it.

4. The method for manufacturing a display panel according to claim 1 , characterized in that, the thermochromic material comprises an irreversible chromatic material and a reversible chromatic material.

5. The method for manufacturing a display panel according to claim 1 , characterized in that, the thermochromic material comprises a microcapsule with an inorganic thermochromic material as a core material and a polymeric material as a shell material, wherein the microcapsule has a particle size between 10 nm to 120 nm.

6. The method for manufacturing a display panel according to claim 1 , characterized in that, the thermochromic material comprises an organic thermochromic material and an inorganic thermochromic material.

7. The method for manufacturing a display panel according to claim 6 , characterized in that, the organic thermochromic material comprises any one or two materials selected from triarylmethane and/or fluorane.

8. The method for manufacturing a display panel according to claim 6 , characterized in that, the organic thermochromic material comprises

9. The method for preparing a display panel according to claim 6 , characterized in that, the inorganic thermochromic material comprises (NH 4 )VO 3 or a mixture of PbCO 3 /Pb(OH) 2 /ZnS.

Assignees

• Boe Technology Group Co Ltd
• Hefei Xinsheng Optoelectronics Technology Co Ltd

Inventors

• Ni Huan
• Lv Fengzhen
• Zhang Xinxia
• Yao Chengpeng
• Guo Xiao
• Xie Xiaolong
• Li Qun
• Lv Kui

Classifications

• G02F2202/023

  curable · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133512 Primary

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

• G02F2202/025

  thermocurable · CPC title

• G02F1/1341

  Filling or closing of cells · CPC title