Black matrix, flat panel display device and method for producing the same

Patent metadata

Field	Value
Publication number	US-10295709-B2
Application number	US-201515120724-A
Country	US
Kind code	B2
Filing date	Aug 27, 2015
Priority date	Mar 18, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

The present disclosure provides a black matrix, a flat panel display device including the black matrix and a method for producing the same. The black matrix is arranged on a surface of a substrate located in a first plane, the black matrix including: a light absorption layer, a microstructure layer and a light reflection layer, the absorption layer being formed between the microstructure layer and the surface of the substrate, and the light reflection layer being arranged on a face of the microstructure layer facing away from the absorption layer. The microstructure layer is configured such that a light incident on the light reflection layer in a direction perpendicular to the first plane is emitted out obliquely with respect to the first plane after the light is reflected by the light reflection layer. The absorption layer may be formed at a side of the microstructure layer, or on the substrate.

First claim

What is claimed is:

1. A black matrix, arranged on a surface of a substrate located in a first plane, the black matrix comprising: a light absorption layer, a microstructure layer and a light reflection layer, the light absorption layer being formed between the microstructure layer and the surface of the substrate, and the light reflection layer being arranged on a face of the microstructure layer facing away from the light absorption layer;
wherein the microstructure layer is configured such that light incident on the light reflection layer from a side of the light reflection layer away from the light absorption layer in a direction perpendicular to the first plane is emitted out obliquely with respect to the first plane after the light is reflected by the light reflection layer, and
wherein the light absorption layer covers only a part of a surface of the microstructure layer facing towards the surface of the substrate and the light reflection layer covers only a part of another surface of the microstructure layer facing away from the light absorption layer.

2. The black matrix according to claim 1 , wherein the light absorption layer is formed on a surface of the microstructure layer facing towards the surface of the substrate.

3. The black matrix according to claim 1 , wherein the microstructure layer is formed such that the light reflection layer is not perpendicular to the first plane.

4. The black matrix according to claim 1 , wherein the microstructure layer is formed such that an angle between a tangential direction of the light reflection layer and the first plane has different values at different portions of the light reflection layer.

5. The black matrix according to claim 1 , wherein the light reflection layer is a metal layer.

6. The black matrix according to claim 1 , wherein the black matrix has a shape selected from any one of a prism shape, a tetrahedron shape, a semi-sphere shape, an oval shape, an elliptical shape, a truncated cone shape, a truncated semi-sphere shape, a truncated oval shape or a truncated elliptical shape.

7. The black matrix according to claim 1 , wherein the black matrix further comprises a microstructure made from transparent material and the light absorption layer is formed on the microstructure.

8. A flat panel display device, comprising the black matrix according to claim 1 .

9. The flat panel display device according to claim 8 , comprising a plurality of the black matrixes arranged side by side, wherein opening regions which are transmittable to light are formed between the plurality of the black matrixes.

10. A method for producing a black matrix of a flat panel display device, comprising:
providing a substrate and producing a microstructure on a surface of the substrate located in a first plane;
producing a light absorption layer on the microstructure;
producing a microstructure layer on the light absorption layer; and
producing a light reflection layer on the microstructure layer, wherein the microstructure layer is configured such that light incident on the light reflection layer in a direction perpendicular to the first plane is emitted out obliquely with respect to the first plane after the light is reflected by the light reflection layer, and
wherein the light absorption layer covers only a part of a surface of the microstructure layer facing towards the surface of the substrate and the light reflection layer covers only a part of another surface of the microstructure layer facing away from the light absorption layer.

11. A method for producing a black matrix of a flat panel display device, comprising:
providing a substrate and producing a light absorption layer on a surface of the substrate located in a first plane;
producing a microstructure layer on the light absorption layer; and
producing a light reflection layer on the microstructure layer,
wherein the microstructure layer is configured such that light incident on the light reflection layer from a side of the light reflection layer away from the light absorption layer in a direction perpendicular to the first plane is emitted out obliquely with respect to the first plane after the light is reflected by the light reflection layer, and
wherein the light absorption layer covers only a part of a surface of the microstructure layer facing towards the surface of the substrate and the light reflection layer covers only a part of another surface of the microstructure layer facing away from the light absorption layer.

12. The method according to claim 10 , wherein the microstructure layer is formed such that the light reflection layer is not perpendicular to the first plane.

13. The method according to claim 10 , wherein the microstructure layer is formed such that an angle between a tangential direction of the light reflection layer and the first plane has different values at different portions of the light reflection layer.

14. The method according to claim 10 , wherein the light reflection layer is a metal layer.

15. The method according to claim 10 , wherein the black matrix has a shape selected from any one of a prism shape, a tetrahedron shape, a semi-sphere shape, an oval shape, an elliptical shape, a truncated cone shape, a truncated semi-sphere shape, a truncated oval shape or a truncated elliptical shape.

16. A method for producing a flat panel display device, comprising:
producing a black matrix on a first substrate by the method according to claim 10 ;
producing an organic light emitting diode on a second substrate; and
aligning and assembling the first substrate with the black matrix and the second substrate with the organic light emitting diode with each other.

17. A method for producing a flat panel display device, comprising:
producing a black matrix on a first substrate by the method according to claim 11 ;
producing an organic light emitting diode on a second substrate; and
aligning and assembling the first substrate with the black matrix and the second substrate with the organic light emitting diode with each other.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Hsu Minghung

Classifications

• H01L51/56

  Electricity · mapped topic

• G02B5/00

  Optical elements other than lenses (light guides G02B6/00; optical logic elements G02F3/00) · CPC title

• H01L27/32

  Electricity · mapped topic

• G02B5/0808

  having a single reflecting layer (G02B5/0883, G02B5/0891 take precedence) · CPC title

• H01L51/5284

  Electricity · mapped topic