Organic film structure and preparation method thereof, encapsulation structure and preparation method thereof, and light-emitting substrate

Patent metadata

Field	Value
Publication number	US-2021376289-A1
Application number	US-201816332548-A
Country	US
Kind code	A1
Filing date	Sep 13, 2018
Priority date	May 11, 2018
Publication date	Dec 2, 2021
Grant date	—

Abstract

The present disclosure relates to a method for preparing an organic film structure. The method for preparing the organic film structure may include forming a pigment mixture layer outside a region where an organic film is to be formed using a pigment liquid mixture, forming a liquid organic layer in the region where the organic film is to be formed with a first liquid organic material, and curing the pigment mixture layer and the liquid organic layer to form an indicator film and the organic film, respectively. The pigment mixture layer may include a pigment.

First claim

1 . A method for preparing an organic film structure, comprising:
forming a pigment mixture layer outside a region where an organic film is to be formed using a pigment liquid mixture; forming a liquid organic layer in the region where the organic film is to be formed with a first liquid organic material; and curing the pigment mixture layer and the liquid organic layer to form an indicator film and the organic film, respectively; wherein the pigment liquid mixture comprises a pigment.

2 . The preparation method according to claim 1 , wherein the pigment liquid mixture further comprises a second liquid organic material.

3 . The preparation method according to claim 1 , wherein forming the pigment mixture layer outside the region where the organic film is to be formed using the pigment liquid mixture comprises:
forming the pigment mixture layer by an inkjet printing process.

4 . The preparation method according to claim 2 , wherein the second liquid organic material is a colorless, transparent liquid organic material.

5 . The preparation method according to claim 4 , wherein the second liquid organic material is the same as the first liquid organic material.

6 . The preparation method according to claim 4 , wherein the pigment in the pigment liquid mixture has a color of red, green, or blue.

7 . The preparation method according to claim 1 , wherein curing the pigment mixture layer and the liquid organic layer to form the indicator film and the organic film, respectively is performed by ultraviolet light irradiation.

8 . The preparation method according to claim 7 , wherein the indicator film is partially cured.

9 . The preparation method according to claim 1 , wherein the indicator film is in a form of a closed annular structure or spaced segments of an annular structure.

10 . The preparation method according to claim 1 , wherein a first barrier dam is further provided outside the region where the organic film is to be formed, and the indicator film is located outside the first barrier dam.

11 . The preparation method according to claim 10 , wherein a second barrier dam is further provided outside the first barrier dam, and the indicator film is disposed between the first barrier dam and the second barrier dam and/or outside the second barrier dam.

12 . An organic film structure, comprising
an organic film comprising a first organic material, and an indicator film comprising a second organic material and a pigment, wherein the indicator film is located outside a region where the organic film is located, and the second organic material is a colorless, transparent organic material.

13 . The organic film structure according to claim 12 , wherein the first organic material is the same as the second organic material.

14 . The organic film structure according to claim 12 , wherein the indicator film is in a form of a closed annular structure or spaced segments of an annular structure.

15 . The organic film structure according to claim 12 , further comprising a first barrier dam disposed outside the organic film,
wherein the indicator film is located at a side of the first barrier dam opposite from the organic film.

16 . The organic film structure according to claim 15 , wherein a second barrier dam is further disposed at a side of the first barrier dam opposite from the organic film, and the indicator film is disposed between the first barrier dam and the second barrier dam and/or outside the second barrier dam.

17 . The organic film structure according to claim 16 , wherein a height of the second barrier dam is greater than a height of the first barrier dam.

18 . An encapsulation structure for encapsulating a light emitting apparatus, comprising the organic film structure of claim 11 .

19 . The encapsulation structure according to claim 18 , further comprising a first inorganic film under the organic film and a second inorganic film above the organic film, the second inorganic film completely covering the organic film.

20 . A light-emitting substrate comprising a plurality of light-emitting apparatuses, wherein each of the plurality of the light-emitting apparatuses is encapsulated in the encapsulation structure according to claim 18 .

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Lu Guanyu
• Zhao Haiping

Classifications

• H10K59/8731

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

• H10K50/844

  Encapsulations · CPC title

• H10K71/40 Primary

  Thermal treatment, e.g. annealing in the presence of a solvent vapour · CPC title

• H01L51/56

  Electricity · mapped topic

• H01L51/5253 Primary

  Electricity · mapped topic