Display device and method for manufacturing the display device

Patent metadata

Field	Value
Publication number	US-10705384-B2
Application number	US-201916240773-A
Country	US
Kind code	B2
Filing date	Jan 6, 2019
Priority date	Jan 9, 2018
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A display device includes a display panel and a light source for outputting a first color light to the display panel. The display panel includes a first display substrate, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first display substrate and the second substrate. The second display substrate includes a base substrate, a color filter layer including a plurality of color filters spaced apart from each other on the base substrate, a color conversion layer including a plurality of dams, and a plurality of conversion parts overlapping the color filters, disposed on the base substrate, and disposed between the plurality of dams, a reflection layer disposed on the dams, and a hydrophobic area disposed on the reflection layer, overlapping an upper surface of the dams, and non-overlapping a side surface of the dams.

First claim

What is claimed is:

1. A display device comprising:
a display panel; and
a light source configured to output a first color light to the display panel,
wherein the display panel comprises:
a first display substrate;
a second display substrate facing the first display substrate;
and a liquid crystal layer disposed between the first display substrate and the second display substrate,

wherein the second display substrate comprises:
a base substrate;
a color filter layer including a plurality of color filters spaced apart from each other on the base substrate;
a color conversion layer including a plurality of dams, and a plurality of conversion parts overlapping the color filters, disposed on the base substrate, and disposed between the plurality of dams;
a reflection layer disposed on the dams; and
a hydrophobic area disposed on the reflection layer, overlapping upper surfaces of the dams, and non-overlapping side surfaces of the dams.

2. The display device of claim 1 , wherein the hydrophobic area comprises a polyvinylidene fluoride derivative in which a phosphonate is bonded as a terminal group.

3. The display device of claim 1 , wherein the reflection layer overlaps the upper surfaces of the dams and non-overlaps the side surfaces of the dams.

4. The display device of claim 1 , wherein the reflection layer is in contact with the upper surface of the dams.

5. The display device of claim 1 , wherein the reflection layer comprises a metal or a metal oxide.

6. The display device of claim 1 , wherein the hydrophobic area is in contact with an upper surface of the reflection layer.

7. The display device of claim 1 , wherein the reflection layer has substantially the same area as the upper surface of the dams.

8. The display device of claim 1 , wherein the hydrophobic area has substantially the same area as an upper surface of the reflection layer.

9. The display device of claim 1 , wherein the conversion parts are in contact with the side surfaces of the dams.

10. The display device of claim 1 , wherein the color conversion layer comprises:
a first conversion part including a first light emitter configured to absorb the first color light and emit a second color light;
a second conversion part including a second light emitter configured to absorb the first color light and emit a third color light; and
a third conversion part through which the first color light is transmitted.

11. The display device of claim 10 , wherein the first light emitter and the second light emitter each comprises quantum dots.

12. The display device of claim 10 , wherein the color filter layer comprises:
a first color filter which absorbs or reflects the first color light, and through which the second color light is transmitted; and
a second color filter which absorbs or reflects the first color light, and through which the third color light is transmitted.

13. The display device of claim 12 , wherein the first color filter covers the first conversion part, and the second color filter covers the second conversion part.

14. The display device of claim 1 , further comprising a black matrix disposed on the base substrate, wherein the black matrix is covered by the dams.

15. The display device of claim 1 , wherein in a thickness direction of the display panel, the first display substrate is disposed closer to the light source than the second display substrate.

16. The display device of claim 1 , wherein the first color light is blue light.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwak Eun-Ae
• Kim Min-Uk
• Song Junho
• Cho Youngje

Classifications

• G02F1/133617 Primary

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

• G02F1/133516 Primary

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title

• G02F1/133512

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

• G02F1/133519

  Overcoatings · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title