Display panel, display apparatus and manufacturing method of display panel

Patent metadata

Field	Value
Publication number	US-10281763-B2
Application number	US-201715678086-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Sep 21, 2016
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

The present disclosure relates to a display panel, a display apparatus and a manufacturing method of a display panel. The display panel comprises a first substrate and a second substrate provided oppositely, wherein the second substrate has a light-transmitting zone and a light-shielding zone adjacent to the light-transmitting zone, wherein the display panel further comprises: an optical element provided on a light entrance side, which is away from the second substrate, of the first substrate, wherein a projection of the optical element on the first substrate and a projection of the light-shielding zone on the first substrate at least partly overlap, and the optical element is configured to deflect a light, which enters from the light entrance side of the first substrate and goes towards the light-shielding zone, to the light-transmitting zone.

First claim

What is claimed is:

1. A display panel, comprising a first substrate and a second substrate provided oppositely, wherein the second substrate has a light-transmitting zone and a light-shielding zone adjacent to the light-transmitting zone, wherein the display panel further comprises:
an optical element provided on a light entrance side, which is away from the second substrate, of the first substrate, wherein a projection of the optical element on the first substrate and a projection of the light-shielding zone on the first substrate at least partly overlap, and the optical element is configured to deflect a light, which enters from the light entrance side of the first substrate and goes towards the light-shielding zone, to the light-transmitting zone,
wherein the optical element consists of one deflecting layer having a shape of a concave lens and one flatting layer, which has a shape complementary to the deflecting layer to flat a concave surface of the deflecting layer,
wherein the deflecting layer has a width equal to that of the light-shielding zone of the second substrate, and the deflecting layer has a curvature radius larger than half of the width of the deflecting layer.

2. The display panel according to claim 1 , wherein the concave surface of the deflecting layer is away from the first substrate, and the deflecting layer is positioned between the flatting layer and the first substrate.

3. The display panel according to claim 1 , wherein the concave surface of the deflecting layer faces the first substrate, and the flatting layer is positioned between the deflecting layer and the first substrate.

4. The display panel according to claim 1 , wherein the deflecting layer has a refractive index larger than that of the flatting layer.

5. The display panel according to claim 4 , wherein the refractive index of the deflecting layer and that of the flatting layer have a difference ranging from 2 to 3.

6. The display panel according to claim 2 , wherein a distance between the deflecting layer and the light-shielding zone of the second substrate ranges from 135 to 185 μm.

7. The display panel according to claim 1 , wherein the deflecting layer comprises silicon nitride and silica, and the flatting layer comprises a resin.

8. A display apparatus comprising the display panel according to claim 1 .

9. A manufacturing method of the display panel according to claim 1 , comprising:
providing a first substrate;
forming an optical element on the first substrate;
providing a second substrate having a light-transmitting zone and a light-shielding zone adjacent to the light-transmitting zone; and
subjecting the first substrate and the second substrate to cell assembly via an alignment mark on the first substrate and an alignment mark on the second substrate, so that after the cell assembly has been performed, the first substrate and the second substrate are provided oppositely and the optical element is positioned on a light entrance side, which is away from the second substrate, of the first substrate,
wherein a projection of the optical element on the first substrate and a projection of the light-shielding zone on the first substrate at least partly overlap, and the optical element is configured to deflect a light, which enters from the light entrance side of the first substrate and goes towards the light-shielding zone, to the light-transmitting zone.

10. The manufacturing method of a display panel according to claim 9 , wherein forming an optical element on the first substrate comprises:
forming a deflecting layer, wherein the deflecting layer has a shape of a concave lens.

11. The manufacturing method of a display panel according to claim 10 , wherein forming an optical element on the first substrate further comprises:
forming a flatting layer, wherein the flatting layer has a shape complementary to the deflecting layer, to flat a concave surface of the deflecting layer.

12. The manufacturing method of a display panel according to claim 11 , wherein forming the optical element comprises:
forming the deflecting layer on the first substrate; and
forming the flatting layer on the deflecting layer.

13. The manufacturing method of a display panel according to claim 12 , wherein forming the deflecting layer on the first substrate comprises forming a deflecting material layer and patterning the deflecting material layer to form the deflecting layer having the shape of the concave lens, wherein patterning the deflecting material layer comprises:
forming a photoresist layer on the deflecting material layer,
subjecting the photoresist layer to uneven exposure;
developing the photoresist layer, so that the photoresist layer has a shape of a concave surface conforming to the shape of the concave lens;
etching the photoresist layer and the deflecting material layer by an ion beam etching process, to form the deflecting layer having the shape of the concave lens; and
removing the photoresist layer.

14. The manufacturing method of a display panel according to claim 11 , wherein forming an optical element comprises:
forming the flatting layer on the first substrate; and
forming the deflecting layer on the flatting layer.

15. The manufacturing method of a display panel according to claim 14 , wherein forming the flatting layer on the first substrate comprises: depositing a flatting material layer on the first substrate and patterning the flatting material layer to form the flatting layer having a shape complementary to the shape of the concave lens of the deflecting layer.

16. The manufacturing method of a display panel according to claim 15 , wherein patterning the flatting material layer comprises:
forming an upper surface of the flatting material layer by using a photosensitive resin;
subjecting the photosensitive resin to uneven exposure; and
developing the photosensitive resin, so that the photosensitive resin has a shape of convex surface complementary to the shape of the concave lens.

17. The manufacturing method of a display panel according to claim 15 , wherein patterning the flatting material layer comprises:
etching the flatting material layer by an ion beam etching process, so that the flatting material layer has a shape of convex surface complementary to the shape of the concave lens.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Tian Yunyun
• Choi Hyunsic

Classifications

• G02F1/133526 Primary

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

• G02F1/133512

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