Display panel with reduced external reflection and improved light efficiency

Patent metadata

Field	Value
Publication number	US-12114528-B2
Application number	US-202217943270-A
Country	US
Kind code	B2
Filing date	Sep 13, 2022
Priority date	May 16, 2019
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A display panel includes a base substrate including: a plurality of pixel regions and a peripheral region adjacent thereto; a pixel defining film disposed on the base substrate and having a plurality of openings, each of which corresponding to a respective one of the plurality of pixel regions; a plurality of light emitting elements disposed on the base substrate corresponding to the plurality of openings and configured to generate first color light; an encapsulation member disposed on the plurality of light emitting elements; a light shield pattern disposed on the encapsulation member and overlapping the peripheral region when viewed in a plan view; and a light control layer disposed on the encapsulation member and the light shield pattern and overlapping the plurality of pixel regions. The pixel defining film includes a first color material, and the light shield pattern includes a second color material different form the first color.

First claim

What is claimed is:

1. A display panel comprising:
a base substrate including a plurality of pixel regions and a peripheral region adjacent to the plurality of pixel regions;
a pixel defining film disposed on the base substrate and having a plurality of openings, each of the plurality of openings corresponding to a respective one of the plurality of pixel regions;
a plurality of light emitting elements disposed on the base substrate corresponding to the plurality of openings and configured to generate first color light having a first color;
an encapsulation layer disposed on the plurality of light emitting elements;
a light shield pattern disposed on the encapsulation layer and overlapping the peripheral region when viewed in a plan view; and
a light control layer disposed on the encapsulation layer and the light shield pattern, the light control layer including a separation wall section spaced apart from the light shield pattern and overlapping the light shield pattern when viewed in a plan view and a plurality of light control parts disposed in regions corresponding to the plurality of pixel regions,
wherein the light shield pattern comprises a second material having a second color that is different from the first color.

2. The display panel of claim 1 , wherein the light shield pattern comprises a black material.

3. The display panel of claim 1 , wherein the first color is a blue color and the second color is a black color.

4. The display panel of claim 1 , wherein the plurality of light control parts comprise:
a first light control part configured to transmit the first color light; and
a third light control part configured to convert the first color light into third color light having a third color that is different from the first color and the second color.

5. The display panel of claim 4 , further comprising a color filter layer disposed on the light control layer,
wherein the plurality of pixel regions comprises:
a first pixel region overlapping the first light control part when viewed in the plan view; and
a third pixel region overlapping the third light control part when viewed in the plan view, and
wherein the color filter layer comprises:
a first color filter part overlapping the first pixel region and the peripheral region when viewed in the plan view and having an opening defined therein corresponding to the third pixel region; and
a third color filter part overlapping the third pixel region when viewed in the plan view.

6. The display panel of claim 5 , further comprising a filling layer disposed between the encapsulation layer and the light control layer,
wherein the light shield pattern is covered by the filling layer.

7. The display panel of claim 5 , further comprising a capping layer disposed at least between the light control layer and the plurality of light emitting elements or between the light control layer and the color filter layer.

8. The display panel of claim 4 , wherein the first color light has a first wavelength range of about 410 nm to about 480 nm, and the third color light has a third wavelength range of about 625 nm to 675 nm.

9. The display panel of claim 1 , wherein the light control layer comprises: a base resin; light emitting bodies dispersed in the base resin; and scattering bodies dispersed in the base resin.

10. The display panel of claim 1 , wherein the light shield pattern is spaced apart from the light control layer in a cross-sectional view.

11. The display panel of claim 1 , wherein each of the plurality of light emitting elements comprises a first electrode, a second electrode, and a light emitting layer disposed between the first electrode and the second electrode, and wherein the light emitting layer of the plurality of light emitting elements having an integrated shape.

12. A display panel comprising:
a base substrate including a plurality of pixel regions and a peripheral region adjacent to the plurality of pixel regions;
a plurality of light emitting elements disposed on the base substrate and overlapping the plurality of pixel regions when viewed in a plan view and configured to generate blue light;
an encapsulation layer covering the plurality of light emitting elements;
a light shield pattern disposed on the encapsulation layer and overlapping the peripheral region when viewed in the plan view;
a filling layer covering the light shield pattern; and
a light control layer disposed on the filling layer and overlapping the plurality of pixel regions, the light control layer including a separation wall section spaced apart from the light shield pattern and overlapping the plurality of light shield patterns when viewed in a plan view and a plurality of light control parts disposed in regions corresponding to the plurality of pixel regions,
wherein the light shield pattern comprises a black color material.

Assignees

• Samsung Display Co Ltd

Inventors

• Joo Sun-Kyu
• Kim Byung-Chul
• Kim Inok
• Park Jaecheol
• Seong Jaemin
• Song Inseok
• Oh Keunchan
• Lee Gak Seok
• Jang Jieun
• Jang Chang-Soon

Classifications

• H10K59/8792

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

• H10K59/877

  comprising scattering means · CPC title

• H10K59/8731

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

• H10K59/873

  Encapsulations · CPC title

• H10K50/865 Primary

  comprising light absorbing layers, e.g. light-blocking layers · CPC title