Display device, manufacturing method thereof, and electronic device including thereof

Patent metadata

Field	Value
Publication number	US-2025366338-A1
Application number	US-202418999372-A
Country	US
Kind code	A1
Filing date	Dec 23, 2024
Priority date	May 23, 2024
Publication date	Nov 27, 2025
Grant date	—

Abstract

A display device includes a display layer, a light controlling layer on the display layer and including a bank and a color conversion layer, and a color filter layer on the light controlling layer and including a color filter and a light blocking structure, the light controlling layer including: an opening in which the bank is not positioned, and a spacer between the bank and the light blocking structure and partially overlapping the opening.

First claim

What is claimed is:

1 . A display device comprising:
a display layer; a light controlling layer on the display layer and comprising a bank and a color conversion layer; and a color filter layer on the light controlling layer and comprising a color filter and a light blocking structure, the light controlling layer comprising:
an opening in which the bank is not positioned; and
a spacer between the bank and the light blocking structure and partially overlapping the opening.

2 . The display device of claim 1 , wherein a diameter of the spacer is larger than a width of the bank in which the spacer is positioned.

3 . The display device of claim 2 , wherein, in a cross-sectional view, a length of an upper surface of the spacer is longer than that of a lower surface of the spacer.

4 . The display device of claim 3 , wherein, in a cross-sectional view, the spacer has an inverted trapezoidal shape.

5 . The display device of claim 3 , wherein the upper surface of the spacer is adjacent to the color filter layer, and the lower surface of the spacer is adjacent to the bank.

6 . The display device of claim 2 , wherein, in a cross-sectional view, a center of the spacer coincides with a center of the bank in which the spacer is positioned.

7 . The display device of claim 1 , further comprising:
a sub-pixel area from which light of one color is emitted and a non-sub-pixel area outside the sub-pixel area, wherein the sub-pixel area comprises a first sub-pixel area from which light of a first color is emitted, a second sub-pixel area from which light of a second color is emitted, and a third sub-pixel area from which light of a third color is emitted, and wherein, when viewed in a plan view, the opening has a first opening overlapping the first sub-pixel area, a second opening overlapping the second sub-pixel area, and a third opening overlapping the third sub-pixel area.

8 . The display device of claim 7 , wherein a portion of the first opening, a portion of the second opening, and a portion of the third opening overlap the non-sub-pixel area.

9 . A display device comprising:
a display layer; a light controlling layer on the display layer and comprising a bank and a color conversion layer; and a color filter layer on the light controlling layer and comprising a color filter and a light blocking structure, the light controlling layer comprising:
an opening in which the bank is not positioned; and
a spacer between the bank and the light blocking structure, a portion of an upper surface of the spacer overlapping the color filter, and a portion of a lower surface of the spacer overlapping the opening.

10 . The display device of claim 9 , wherein a diameter of the spacer is larger than a width of the bank in which the spacer is positioned.

11 . The display device of claim 10 , wherein, in a cross-sectional view, a length of the upper surface of the spacer is longer than that of the lower surface of the spacer.

12 . The display device of claim 10 , wherein the upper surface of the spacer is adjacent to the color filter layer, and the lower surface of the spacer is adjacent to the bank.

13 . The display device of claim 10 , wherein, in a cross-sectional view, a center of the spacer coincides with a center of the bank in which the spacer is positioned.

14 . The display device of claim 9 , wherein the display layer comprises a light emitting element that provides light to a light emitting area,
wherein the light emitting area overlaps the color filter and the color conversion layer when viewed in a plan view, and wherein a portion of the spacer overlaps the light emitting area.

15 . The display device of claim 9 , wherein a filling layer is between the light controlling layer and the color filter layer, and
wherein the filling layer and the spacer have the same refractive index.

16 . A manufacturing method of a display device, comprising:
manufacturing a first panel; manufacturing a second panel; and interposing a filling layer between the first panel and the second panel and bonding the first panel and the second panel, wherein the manufacturing of the first panel comprises:
forming a color filter layer comprising a color filter and a light blocking portion on a first base layer; and
forming a spacer on the light blocking portion.

17 . The manufacturing method of the display device of claim 16 , wherein the manufacturing of the second panel comprises:
positioning a light emitting element layer comprising a light emitting element on a second base layer; and positioning a color conversion layer comprising a bank protruding in a thickness direction of the second base layer and a color conversion unit within an area surrounded by the bank and comprising quantum dots.

18 . The manufacturing method of the display device of claim 17 , wherein the bonding of the first panel and the second panel comprises:
bonding the first panel and the second panel so that a center of the bank coincides with that of the spacer in a cross-sectional view.

19 . The manufacturing method of the display device of claim 17 , wherein a diameter of the spacer is larger than a width of the bank in which the spacer is positioned.

20 . The manufacturing method of the display device of claim 17 , wherein an upper surface of the spacer is adjacent to the first panel and a lower surface of the spacer is adjacent to the second panel, and
in a cross-sectional view, a length of the upper surface of the spacer is longer than that of the lower surface of the spacer.

21 . An electronic device, comprising:
a processor to provide image data signals; and a display device to display an image based on the image data signals; the display device comprising: a display layer; a light controlling layer on the display layer and comprising a bank and a color conversion layer; and a color filter layer on the light controlling layer and comprising a color filter and a light blocking structure, the light controlling layer comprising: an opening in which the bank is not positioned; and a spacer between the bank and the light blocking structure and partially overlapping the opening.

22 . The electronic device of claim 21 , wherein a diameter of the spacer is larger than a width of the bank in which the spacer is positioned.

23 . The electronic device of claim 22 , wherein, in a cross-sectional view, a length of an upper surface of the spacer is longer than that of a lower surface of the spacer.

24 . The electronic device of claim 23 , wherein, in a cross-sectional view, the spacer has an inverted trapezoidal shape.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Seon Uk
• Joo Sun Kyu
• Hong Seok Joon

Classifications

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/122

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

• H10K59/1201 Primary

  Manufacture or treatment · CPC title