Display device and method for manufacturing the display device

Patent metadata

Field	Value
Publication number	US-10969629-B2
Application number	US-202016889703-A
Country	US
Kind code	B2
Filing date	Jun 1, 2020
Priority date	Jan 9, 2018
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

A color conversion substrate and a display device including the same. The color conversion substrate includes a color filter layer having a plurality of color filters, and a color conversion layer disposed on the color filter layer. The color conversion layer includes a plurality of dams, and a plurality of conversion parts disposed between the dams. A reflection layer is disposed on the dams, and a hydrophobic area is disposed on the reflection layer, overlapping an upper surface of the dams, and non-overlapping a side surface of the dams. The display device further includes a light source configured to output a first color light to the color conversion substrate.

First claim

What is claimed is:

1. A color conversion substrate comprising:
a color filter layer including a plurality of color filters;
a color conversion layer disposed on the color filter layer, the color conversion layer including a plurality of dams, and a plurality of conversion parts 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 color conversion substrate of claim 1 , wherein the hydrophobic area comprises a polyvinylidene fluoride derivative in which a phosphonate is bonded as a terminal group.

3. The color conversion substrate 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 color conversion substrate of claim 1 , wherein the reflection layer comprises a metal or a metal oxide.

5. The color conversion substrate of claim 1 , wherein the hydrophobic area is in contact with an upper surface of the reflection layer.

6. The color conversion substrate of claim 1 , wherein at least one conversion part of the plurality of conversion parts includes quantum dots.

7. The color conversion substrate of claim 6 , wherein the at least one conversion part further includes a scattering particle.

8. The color conversion substrate of claim 1 , wherein the conversion parts are in contact with the side surfaces of the dams.

9. The color conversion substrate of claim 1 , wherein side surfaces of the dams are hydrophilic.

10. A display device comprising:
a color conversion substrate; and
a light source configured to output a first color light to the color conversion substrate,
wherein the color conversion substrate comprises:
a color filter layer including a plurality of color filters;
a color conversion layer disposed on the color filter layer, the color conversion layer including a plurality of dams, and a plurality of conversion parts 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.

11. The display device of claim 10 , wherein the hydrophobic area is in contact with an upper surface of the reflection layer.

12. The display device of claim 10 , 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.

13. The display device of claim 12 , wherein the first light emitter and the second light emitter each comprises quantum dots.

14. The display device of claim 12 , 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.

15. The display device of claim 14 , wherein the first color filter covers the first conversion part, and the second color filter covers the second conversion part.

16. The display device of claim 10 , wherein the first color light is a blue light or an ultraviolet light.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• G02F1/133516 Primary

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

• G02F1/133617 Primary

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

• G02F1/133553

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

• G02F1/133614

  using photoluminescence, e.g. phosphors illuminated by UV or blue light · CPC title

• G02F1/133514

  Colour filters · CPC title