Color filter substrate and display device

Patent metadata

Field	Value
Publication number	US-9664826-B2
Application number	US-201414274783-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	Nov 26, 2013
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

A color filter substrate includes a transparent substrate and a plurality of color filter patterns. The transparent substrate has an upper surface and a lower surface opposite to each other, and a plurality of containing cavities. The containing cavities extend from the upper surface toward the lower surface and separate from each other. Each containing cavity has a bottom surface. The color filter patterns are disposed on the transparent substrate and located inside the containing cavities, respectively. The color filter patterns contact with the corresponding bottom surfaces, respectively.

First claim

What is claimed is:

1. A display apparatus, comprising:
a color filter substrate, comprising:
a transparent substrate, having an upper surface and a lower surface opposite to each other, and a plurality of containing cavities, wherein the containing cavities extend from the upper surface toward the lower surface and separate from each other, and each of the containing cavities has a bottom surface; and
a plurality of color filter patterns, disposed on the transparent substrate and respectively located inside the containing cavities, wherein the color filter patterns are respectively contacting with the corresponding bottom surfaces;

an active device array substrate, disposed opposite to the color filter substrate and located on the lower surface of the transparent substrate; and
a reflective structure layer, disposed between the active device array substrate and the color filter substrate or on a surface of the active device array substrate relatively away from the color filter substrate, wherein the active device array substrate is disposed closer to the bottom surface of each of the containing cavities than the upper surface of the transparent substrate.

2. The display apparatus as recited in claim 1 , wherein a horizontal distance is between two sides of two adjacent color filter patterns and the horizontal distance is within a range from 2 micrometers to 2 millimeters.

3. The display apparatus as recited in claim 1 , wherein a vertical distance is between the bottom surface of each of the containing cavities and the upper surface and within a range from 5 micrometers to 5 millimeters.

4. The display apparatus as recited in claim 1 , further comprising:
a planar layer, disposed on the upper surface of the transparent substrate and covering the upper surface, the containing cavities and the color filter patterns.

5. The display apparatus as recited in claim 1 , wherein a material of the transparent substrate comprises glass, polyethylene terephthalate (PET), polymethyl methacrylate (PMMA) or polycarbonate (PC).

6. The display apparatus as recited in claim 1 , wherein a width between each of the containing cavities is within a range from 9 micrometers to 9 millimeters.

7. The display apparatus as recited in claim 1 , wherein the reflective structure layer is disposed between the active device array substrate and the color filter substrate, and the reflective structure comprises a capsule electrophoretic display medium layer, a micro-cup electrophoretic display medium layer or a cholesteric liquid crystal electrophoretic display medium layer.

8. The display apparatus as recited in claim 7 , wherein a material of the transparent substrate comprises polyethylene terephthalate (PET) or polycarbonate (PC).

9. The display apparatus as recited in claim 7 , where a spacing distance is between the bottom surface of each of the containing cavities and the reflective structure layer and the spacing distance is within a range from 0.1 to 50 micrometers.

10. The display apparatus as recited in claim 1 , further comprising:
a display medium layer, disposed between the active device array substrate and the color filter substrate, wherein the display medium layer comprises a liquid crystal layer or an organic light-emitting layer, the reflective structure layer is disposed on the surface of the active device array substrate relatively away from the color filter substrate.

11. The display apparatus as recited in claim 10 , wherein a material of the transparent substrate comprises glass or polymethyl methacrylate (PMMA), and the reflective structure layer is made of a reflecting material.

12. The display apparatus as recited in claim 1 , wherein there is a height difference between a top surface of each of the color filter patterns and the upper surface of the transparent substrate.

13. The display apparatus as recited in claim 1 , wherein a thickness of each of the color filter patterns is smaller than a height between the upper surface of the transparent substrate and the bottom surface of the containing cavities.

Assignees

• E Ink Holdings Inc

Inventors

• Lee Tai-Yuan
• Lo Po-Yuan

Classifications

• H10K59/878

  comprising reflective means · CPC title

• G02F1/133514

  Colour filters · CPC title

• G02F2001/1672

  Physics · mapped topic

• G02F1/167

  by electrophoresis · CPC title

• G02F2001/133519

  Physics · mapped topic