Display panel, manufacturing method thereof, and displaying device

Patent metadata

Field	Value
Publication number	US-2022158136-A1
Application number	US-202117356364-A
Country	US
Kind code	A1
Filing date	Jun 23, 2021
Priority date	Nov 18, 2020
Publication date	May 19, 2022
Grant date	—

Abstract

Disclosed are a display panel, a manufacturing method thereof and a displaying device. The display panel comprises a driving backplane, a light-emitting device layer disposed on the driving backplane, and an encapsulation layer, a color film layer and a color separation suppression layer which are disposed on the side, away from the driving backplane, of the light-emitting device layer, wherein the color separation suppression layer is configured to interfere with and cancel out external ambient light, so as to reduce the external ambient light incident on the light-emitting device layer and the driving backplane and block the external ambient light reflected by the light-emitting device layer and the driving backplane from exiting from a light-exiting surface of the display panel.

First claim

1 . A display panel, comprising:
a driving backplane; a light-emitting device layer disposed on the driving backplane; and an encapsulation layer, a color film layer and a color separation suppression layer which are disposed on the side, away from the driving backplane, of the light-emitting device layer; wherein the color separation suppression layer is configured to interfere with and cancel out external ambient light, so as to reduce the external ambient light incident on the light-emitting device layer and the driving backplane and block the external ambient light reflected by the light-emitting device layer and the driving backplane from exiting from a light-exiting surface of the display panel.

2 . The display panel according to claim 1 , wherein the color separation suppression layer comprises at least one barrier layer, four times of the product of the thickness and refractive index of each barrier layer is an odd multiple of a preset wavelength, and the preset wavelength is a wavelength corresponding to external ambient light that the barrier layer needs to interfere with and cancel out.

3 . The display panel according to claim 2 , wherein the color separation suppression layer comprises at least two barrier layers, and the wavelengths corresponding to external ambient light that any two of the barrier layers interfere with and cancel out are different.

4 . The display panel according to claim 1 , wherein the encapsulation layer, the color film layer and the color separation suppression layer are sequentially arranged away from the light-emitting device layer in the direction perpendicular to the light-emitting device layer.

5 . The display panel according to claim 1 , wherein the encapsulation layer, the color separation suppression layer and the color film layer are sequentially arranged away from the light-emitting device layer in the direction perpendicular to the light-emitting device layer.

6 . The display panel according to claim 1 , wherein the color film layer, the encapsulation layer, and the color separation suppression layer are sequentially arranged away from the light-emitting device layer in the direction perpendicular to the light-emitting device layer.

7 . The display panel according to claim 1 , wherein the color film layer, the color separation suppression layer and the encapsulation layer are sequentially arranged away from the light-emitting device layer along the direction perpendicular to the light-emitting device layer.

8 . The display panel according to claim 1 , wherein the color separation suppression layer, the encapsulation layer and the color film layer are sequentially arranged away from the light-emitting device layer in the direction perpendicular to the light-emitting device layer.

9 . The display panel according to claim 1 , wherein the color separation suppression layer, the color film layer and the encapsulation layer are sequentially arranged away from the light-emitting device layer along the direction perpendicular to the light-emitting device layer.

10 . The display panel according to claim 1 , wherein the material of the color separation suppression layer is an organic material, metal or metal oxides.

11 . The display panel according to claim 1 , wherein the light-emitting device layer comprises an anode layer disposed on the driving backplane and a pixel defining layer disposed on the anode layer, and the pixel defining layer has a plurality of opening areas; and
the light-emitting device layer further comprises an organic functional layer disposed in the opening areas, and a cathode layer covering the pixel defining layer and the organic functional layer.

12 . The display panel according to claim 11 , wherein the material of the pixel defining layer is a black shading material.

13 . The display panel according to claim 11 , wherein the light-emitting device layer further comprises a light shielding layer disposed between the pixel defining layer and the cathode layer, and the light shielding layer is located on the surface, away from the driving backplane, of the pixel defining layer; and
the material of the light shielding layer is a black shading material.

14 . The display panel according to claim 13 , wherein the material of the light shielding layer is MoOx or a black resin material.

15 . The display panel according to claim 11 , wherein the color film layer comprises a plurality of color film units, each color film unit comprises a color resistance unit and a black matrix surrounding the color resistance unit;
wherein a front projection of the color resistance unit on the driving backplane covers a front projection of the organic functional layer in the corresponding opening area on the driving backplane, and a front projection of the black matrix on the driving backplane is located within a front projection of a peripheral area between two adjacent opening areas on the driving backplane.

16 . A manufacturing method of a display panel, comprising:
providing a driving backplane; forming a light-emitting device layer on the driving backplane; and forming an encapsulation layer, a color film layer and a color separation suppression layer on the side, away from the driving backplane, of the light-emitting device layer; wherein the color separation suppression layer is configured to interfere with and cancel out external ambient light, so as to reduce the external ambient light incident on the light-emitting device layer and the driving backplane and block the external ambient light reflected by the light-emitting device layer and the driving backplane from exiting from a light-exiting surface of the display panel.

17 . The manufacturing method of the display panel according to claim 16 , wherein forming the encapsulation layer, the color film layer and the color separation suppression layer on the side, away from the driving backplane, of the light-emitting device layer comprises:
sequentially forming the encapsulation layer, the color film layer and the color separation suppression layer on the side, away from the driving backplane, of the light-emitting device layer; or sequentially forming the encapsulation layer, the color separation suppression layer and the color film layer on the side, away from the driving backplane, of the light-emitting device layer; or sequentially forming the color film layer, the encapsulation layer and the color separation suppression layer on the side, away from the driving backplane, of the light-emitting device layer; or sequentially forming the color film layer, the color separation suppression layer and the encapsulation layer on the side, away from the driving backplane, of the light-emitting device layer; or sequentially forming the color separation suppression layer, the encapsulation layer and the color film layer on the side, away from the driving backplane, of the light-emitting device layer; or sequentially forming the color separation suppression layer, the color film layer and the encapsulation layer on the side, away from the driving backplane, of the light-emitting device layer.

18 . The manufacturing method of the display panel according to claim 16 , wherein forming the light-emitting device layer on the driving backplane comprises:
forming an anode layer on the driving backplane; forming a pixel defining layer on the anode layer, wherein the pixel defining layer has a plurality of opening areas; forming an organic functional layer in the opening areas; and forming a cathode layer covering the pixel defining layer and

Assignees

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

Inventors

• Yang Jibum
• Lee Euiku
• Lee Myoungsoo
• Kong Chao
• Guo Lin
• Li Na
• Qiu Haijun

Classifications

• H10K59/8792

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

• H10K59/8731

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

• H10K50/86

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/38 Primary

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

• H01L51/56

  Electricity · mapped topic