Film structure, display device and method for fabricating the film structure

Patent metadata

Field	Value
Publication number	US-10923677-B2
Application number	US-201816336164-A
Country	US
Kind code	B2
Filing date	Jul 6, 2018
Priority date	Aug 28, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

The present disclosure provides a film structure, a display device, and a method for fabricating a film structure, and relates to the field of display technology. The present disclosure provides a first organic layer having a sloped edge on a substrate, a climbing angle between the sloped edge and the substrate is less than a breakable angle, and wherein the breakable angle is an angle at which the first additional layer on the sloped edge of the first organic layer cracks or is about to crack.

First claim

What is claimed is:

1. A film structure comprising:
a first organic layer disposed on the substrate, wherein the first organic layer is of a single layer structure, and wherein the first organic layer is a functional layer in a functional structure on the substrate;
a first additional layer disposed on the first organic layer, wherein the first additional layer comprises a first inorganic layer, wherein the first organic layer has a sloped edge, wherein a climbing angle between the sloped edge and the substrate is less than a first breakable angle, and wherein the first breakable angle is an angle at which the first additional layer on the sloped edge of the first organic layer cracks or is about to crack; and
at least one stack consisting of a second organic layer and a second inorganic layer on the first inorganic layer, wherein a climbing angle between the second organic layer and the substrate is less than a second breakable angle, and wherein the second breakable angle is an angle at which the second inorganic layer on the second organic layer cracks or is about to crack.

2. The film structure according to claim 1 , wherein the first breakable angle is about 35°.

3. The film structure according to claim 1 , wherein the first organic layer comprises one of a planarization layer and a pixel defining layer.

4. The film structure according to claim 1 , further comprising a protective layer disposed opposite to the substrate and an adhesive layer for bonding the protective layer to the substrate, wherein the first organic layer is located between the substrate and the protective layer.

5. The film structure according to claim 1 , wherein the substrate is one of a rigid substrate and a flexible substrate.

6. A display device comprising the film structure according to claim 1 .

7. A method for fabricating a film structure, the method comprising:
forming a first organic layer on the substrate, wherein the first organic layer is of a single layer structure, and wherein the first organic layer is a functional layer in a functional structure on the substrate;
forming a first additional layer on the first organic layer, wherein the first additional layer comprises a first inorganic layer, wherein the first organic layer has a sloped edge, wherein a climbing angle between the sloped edge and the substrate is less than a first breakable angle, and wherein the first breakable angle is an angle at which the first additional layer formed on the sloped edge of the first organic layer cracks or is about to crack; and
forming at least one stack consisting of a second organic layer and a second inorganic layer on the first inorganic layer, wherein a climbing angle between the second organic layer and the substrate is less than a second breakable angle, and wherein the second breakable angle is an angle at which the second inorganic layer on the second organic layer cracks or is about to crack.

8. A display device comprising the film structure according to claim 2 .

9. A display device comprising the film structure according to claim 3 .

Assignees

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

Inventors

• Wang Yulin
• Shih Huai Ting
• Song Lifang
• Peng Rui

Classifications

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title