Display panel, display device, and method of fabricating display panel

Patent metadata

Field	Value
Publication number	US-11003011-B2
Application number	US-201816174142-A
Country	US
Kind code	B2
Filing date	Oct 29, 2018
Priority date	Dec 26, 2017
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A display panel may include a first base substrate, a second base substrate facing the first base substrate, a plurality of wavelength conversion parts that are provided on the first base substrate to face the second base substrate, and at least one of the plurality of wavelength conversion parts includes an emission body, a light blocking layer partially covering the plurality of wavelength conversion parts and having a plurality of openings, the light blocking layer including a metallic material, and a first organic layer provided on the light blocking layer without overlapping the openings.

First claim

What is claimed is:

1. A display panel, comprising:
a first base substrate;
a second base substrate facing the first base substrate;
a plurality of light control parts that are provided on the first base substrate to face the second base substrate, and at least one of the plurality of light control parts comprises an emission body;
a light blocking layer partially covering the plurality of light control parts and having a plurality of openings, the light blocking layer comprising a metallic material;
a first organic layer provided on the light blocking layer without overlapping the plurality of openings, and the first organic layer having a convex sectional shape; and
a second organic layer covering the plurality of openings and only partially overlapping the first organic layer, when viewed in a plan view,
wherein the light blocking layer has a curved inclined surface that reflects light, and
wherein the first organic layer and the second organic layer provide a flat surface.

2. The display panel of claim 1 , wherein the emission body is a quantum dot.

3. The display panel of claim 1 , further comprising a cover layer that is provided between the plurality of light control parts and the light blocking layer to cover the plurality of light control parts,
wherein each of the plurality of openings exposes a portion of the cover layer.

4. The display panel of claim 3 , wherein the cover layer includes an inorganic layer or an inorganic layer and an organic layer.

5. The display panel of claim 1 , further comprising a supplementary light blocking layer that is provided on a surface of the first base substrate to overlap the light blocking layer,
wherein the light blocking layer is provided between the supplementary light blocking layer and the first organic layer, when viewed in a sectional view.

6. The display panel of claim 5 , wherein the supplementary light blocking layer comprises an organic light-blocking material.

7. The display panel of claim 1 , wherein the plurality of light control parts comprise:
a first light control part including a first emission body configured to absorb a first color light and to emit a second color light, whose color is different from that of the first color light;
a second light control part including a second emission body configured to absorb the first color light and to emit a third color light, whose color is different from those of the first and second color lights; and
a third light control part configured to allow the first color light to pass therethrough.

8. The display panel of claim 7 , further comprising a supplementary conversion part provided between the plurality of light control parts and the first base substrate,
wherein the supplementary conversion part is spaced apart from with the third light control part, when viewed in a plan view.

9. The display panel of claim 8 , wherein the supplementary conversion part comprises a first color filter layer, and the first color filter layer is a yellow color filter layer.

10. The display panel of claim 8 , wherein the supplementary conversion part comprises a second color filter layer that is configured to emit light whose color is same as that of the second color light, and a third color filter layer that is configured to emit light whose color is same as that of the third color light,
wherein the second color filter layer is provided between the first light control part and the first base substrate, and
wherein the third color filter layer is provided between the second light control part and the first base substrate.

11. The display panel of claim 1 , further comprising a polarizing layer disposed directly on the first organic layer and the second organic layer.

12. A display device, comprising:
a display panel configured to display an image; and
a backlight unit provided adjacent to the display panel to provide light to the display panel,
wherein the display panel comprises:
a first base substrate;
a second base substrate provided between the first base substrate and the backlight unit;
a liquid crystal layer provided between the first base substrate and the second base substrate;
a plurality of light control parts provided between the first base substrate and the liquid crystal layer, and configured to change a wavelength of light incident thereto or to allow the incident light to pass therethrough;
a metal light blocking layer partially covering the plurality of light control parts and having a plurality of openings, wherein each of the plurality of openings is provided at a position corresponding to a center region of a corresponding one of the plurality of light control parts; and
a first organic layer provided on the metal light blocking layer without overlapping the plurality of openings, when viewed in a plan view, and the first organic layer having a convex sectional shape; and
a second organic layer covering the plurality of openings and only partially overlapping the first organic layer, when viewed in the plan view,
wherein the first organic layer protrudes more than the metal light blocking layer from the first base substrate, and
wherein the first organic layer and the second organic layer provide a flat surface.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hongbeom
• Chae Kyungtae
• Yu Hanjun
• Yoon Yeogeon
• Park Keunwoo

Classifications

• G02F1/133528

  Polarisers · CPC title

• G02F1/133519

  Overcoatings · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133617

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title

• G02F1/1336

  Illuminating devices · CPC title