Method of manufacturing display apparatus

Patent metadata

Field	Value
Publication number	US-12464923-B2
Application number	US-202217714598-A
Country	US
Kind code	B2
Filing date	Apr 6, 2022
Priority date	Apr 19, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A method of manufacturing a display apparatus having at least one first color emission layer and at least one second color emission layer includes: forming a first color filter layer in a first area of a substrate, a second color filter layer in a second area of the substrate, and a third color filter layer in a third area of the substrate; forming a bank having a first opening overlapping the first area, a second opening overlapping the second area, and a third opening overlapping the third area; and forming a first transmissive layer filling at least a portion of the first opening, a second transmissive layer filling at least a portion of the second opening and including a same material as the first transmissive layer, and a third color quantum dot layer filling at least a portion of the third opening.

First claim

What is claimed is:

1 . A method of manufacturing a display apparatus, the method comprising:
forming a first color filter layer in a first area of a substrate, a second color filter layer in a second area of the substrate, and a third color filter layer in a third area of the substrate; forming a bank having a first opening overlapping the first area, a second opening overlapping the second area, and a third opening overlapping the third area; and forming a first transmissive layer filling at least a portion of the first opening, a second transmissive layer filling at least a portion of the second opening and comprising a same material as the first transmissive layer, and a third color quantum dot layer filling at least a portion of the third opening, wherein the first color filter layer is between the first transmissive layer and the substrate.

2 . The method of claim 1 , wherein the first transmissive layer, the second transmissive layer, and the third color quantum dot layer are formed through an inkjet process.

3 . The method of claim 2 , wherein the inkjet process comprises:
injecting a transmissive layer material into the first opening and the second opening and injecting a quantum dot layer material into the third opening; and curing the transmissive layer material and the quantum dot layer material.

4 . The method of claim 3 , wherein the curing of the transmissive layer material and the quantum dot layer material comprises removing a portion of the transmissive layer material in a thickness direction and removing a portion of the quantum dot layer material in the thickness direction.

5 . The method of claim 3 , wherein the first transmissive layer, the second transmissive layer, and the third color quantum dot layer are concurrently formed.

6 . The method of claim 1 , wherein
the first transmissive layer and the second transmissive layer are formed through an inkjet process, and the third color quantum dot layer is formed through a coating process.

7 . The method of claim 6 , wherein
the inkjet process comprises:
injecting a transmissive layer material into the first opening and the second opening; and
curing the transmissive layer material, and
the coating process comprises:
applying a quantum dot layer material on an entire surface of the substrate; and
curing the quantum dot layer material.

8 . The method of claim 7 , wherein the curing of the transmissive layer material comprises removing a portion of the transmissive layer material.

9 . The method of claim 7 , wherein
the first transmissive layer and the second transmissive layer are concurrently formed, and the third color quantum dot layer is formed after the first transmissive layer and the second transmissive layer are formed.

10 . The method of claim 9 , wherein the curing of the quantum dot layer material comprises removing the quantum dot layer material covering the first transmissive layer and the second transmissive layer.

11 . The method of claim 1 , wherein
the first transmissive layer and the second transmissive layer are formed through a coating process, and the third color quantum dot layer is formed through an inkjet process.

12 . The method of claim 11 , wherein
the inkjet process comprises:
injecting a quantum dot layer material into the third opening; and
curing the quantum dot layer material, and
the coating process comprises:
applying a transmissive layer material on an entire surface of the substrate; and
curing the transmissive layer material.

13 . The method of claim 12 , wherein the curing of the quantum dot layer material comprises removing a portion of the quantum dot layer material.

14 . The method of claim 12 , wherein the first transmissive layer and the second transmissive layer are concurrently formed after the third color quantum dot layer is formed.

15 . The method of claim 14 , wherein the curing of the transmissive layer material comprises removing the transmissive layer material covering the third color quantum dot layer.

16 . The method of claim 1 , wherein:
the display apparatus comprises at least one first color emission layer and at least one second color emission layer, and the first color emission layer is configured to emit light having a wavelength in a first wavelength band, and the second color emission layer is configured to emit light having a wavelength in a second wavelength band.

17 . The method of claim 16 , wherein the wavelength of the light emitted from the second color emission layer is longer than the wavelength of the light emitted from the first color emission layer.

18 . The method of claim 17 , wherein the third color quantum dot layer is configured to convert the light having the wavelength in the first wavelength band and the light having the wavelength in the second wavelength band into light having a wavelength in a third wavelength band.

19 . The method of claim 18 , wherein the first transmissive layer and the second transmissive layer do not change a wavelength of light passing therethrough.

20 . The method of claim 19 , wherein the first color filter layer is configured to transmit the light having the wavelength in the first wavelength band, the second color filter layer is configured to transmit the light having the wavelength in the second wavelength band, and the third color filter layer is configured to transmit the light having the wavelength in the third wavelength band.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Sunyoung

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K71/00

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

• H10K59/122

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