Quantum dot display substrate and manufacturing method thereof, and quantum dot display device

Patent metadata

Field	Value
Publication number	US-10571737-B2
Application number	US-201715572327-A
Country	US
Kind code	B2
Filing date	May 2, 2017
Priority date	Jul 8, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

The present disclosure discloses a quantum dot display substrate and a manufacturing method thereof, and a quantum dot display device. The quantum dot display substrate comprises black matrix patterns, quantum dot patterns surrounded by the quantum dot patterns, a first base substrate, and a first optical layer and a second optical layer both arranged on a side of the first base substrate, and the first optical layer is arranged on a side of the second optical layer away from the first base substrate; the first optical layer is configured to collimate incident light to generate collimated light and transmit the collimated light to the second optical layer; the second optical layer is configured to adjust an outgoing direction of the collimated light to generate outgoing light, and make the outgoing light irradiate onto the black matrix patterns.

First claim

What is claimed is:

1. A quantum dot display substrate, comprising:
black matrix patterns;
quantum dot patterns surrounded by the black matrix patterns;
a first base substrate; and
a first optical layer and a second optical layer both arranged on a side of the first base substrate, wherein
the first optical layer is arranged on a side of the second optical layer away from the first base substrate;
the first optical layer is configured to collimate incident light to generate collimated light and transmit the collimated light to the second optical layer; and
the second optical layer is configured to adjust an outgoing direction of the collimated light to generate outgoing light, and make the outgoing light irradiate onto the black matrix patterns and prevent the outgoing light from irradiating onto the quantum dot patterns.

2. The quantum dot display substrate of claim 1 , wherein the quantum dot patterns and the black matrix patterns are arranged at a side of the second optical layer away from the first optical layer.

3. The quantum dot display substrate of claim 2 , wherein the black matrix patterns are arranged on a side of the quantum dot patterns away from the second optical layer.

4. The quantum dot display substrate of claim 3 , further comprising a protective layer arranged on the black matrix patterns and a first polarizer arranged on the protective layer;
wherein the quantum dot patterns are arranged on the first polarizer.

5. The quantum dot display substrate of claim 1 , wherein the first optical layer comprises a plurality of convex lens structures.

6. The quantum dot display substrate of claim 5 , wherein convex surfaces of the plurality of convex lens structures are configured to face towards the second optical layer.

7. The quantum dot display substrate of claim 5 , wherein the first optical layer further comprises a first base layer, and the plurality of convex lens structures are arranged in the first base layer.

8. The quantum dot display substrate of claim 5 , wherein the plurality of convex lens structures are uniformly distributed.

9. The quantum dot display substrate of claim 1 , wherein the second optical layer comprises a plurality of optical waveguide structures, configured to make the collimated light undergo total reflection to generate the outgoing light and make the outgoing light irradiate onto the black matrix patterns.

10. The quantum dot display substrate of claim 9 , wherein the second optical layer comprises a second base layer, configured to cover the plurality of optical waveguide structures.

11. The quantum dot display substrate of claim 9 , wherein the plurality of optical waveguide structures are arc-shaped.

12. The quantum dot display substrate of claim 11 , wherein a cambered surface of a longitudinal section of the optical waveguide structure is recessed inside of the optical waveguide structure.

13. The quantum dot display substrate of claim 12 , wherein each point on the cambered surface of the optical waveguide structure has a predetermined radian such that the collimated light undergoes a total reflection at the point to generate the outgoing light which will irradiate onto the black matrix pattern.

14. The quantum dot display substrate of claim 9 , wherein the quantum dot patterns are arranged on a side of the optical waveguide structures away from the first optical layer, and the optical waveguide structures and the quantum dot patterns are arranged in one-to-one correspondence manner.

15. The quantum dot display substrate of claim 14 , wherein the quantum dot patterns and the first optical layer are arranged at a same side of the first base substrate, and the optical waveguide structures are arranged on the quantum dot patterns, respectively.

16. The quantum dot display substrate of claim 1 , wherein the quantum dot pattern is selected from a red quantum dot pattern, a green quantum dot pattern, or a combination thereof.

17. A quantum dot display device, comprising: an array substrate and the quantum dot display substrate of claim 1 , which are arranged opposite to each other.

18. A manufacturing method of the quantum dot display substrate according to claim 1 , the manufacturing method comprises:
forming black matrix patterns and quantum dot patterns on the first base substrate such that the quantum dot patterns are arranged between the black matrix patterns, respectively;
forming the second optical layer on a side of the first base substrate; and
forming a first optical layer on a side of the second optical layer away from the first base substrate such that the first optical layer is configured to collimate incident light to generate collimated light and transmit the collimated light to the second optical layer; and the second optical layer is configured to adjust an outgoing direction of the collimated light to generate outgoing light, and make the outgoing light irradiate onto the black matrix patterns and prevent the outgoing light from irradiating onto the quantum dot patterns.

19. The manufacturing method of the quantum dot display substrate of claim 18 , wherein the second optical layer comprises a second base layer and a plurality of optical waveguide structures;
the step of forming the second optical layer on a side of the first base substrate further comprises:
forming the plurality of optical waveguide structures on a side of the first base substrate; and
forming the second base layer on the plurality of optical waveguide structures to cover the plurality of optical waveguide structures.

20. The manufacturing method of the quantum dot display substrate of claim 18 , wherein the first optical layer comprises a first base layer and a plurality of convex lens structures;
the step of forming a first optical layer on a side of the second optical layer away from the first base substrate comprises:
forming the first base layer on a side of the second optical layer away from the first base substrate; and
forming the plurality of convex lens structures in the first base layer.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Tian Yunyun
• Lv Jing
• Im Yunsik
• Choi Hyunsic
• Yang Zezhou

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F2202/36

  Micro- or nanomaterials · CPC title

• G02F1/133617

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

• G02F1/133524

  Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides · CPC title

• G02F1/133526 Primary

  Lenses, e.g. microlenses or Fresnel lenses · CPC title