Display panel and display device

Patent metadata

Field	Value
Publication number	US-10310163-B2
Application number	US-201615501275-A
Country	US
Kind code	B2
Filing date	May 31, 2016
Priority date	Mar 7, 2016
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A display panel and a display device are disclosed. The display panel comprises: a display substrate, an optical substrate, a light guide plate and a first frame; wherein: the optical substrate is arranged between the display substrate and the light guide plate, and the first frame is arranged on the same side edge of the display substrate, the optical substrate and the light guide plate; the light guide plate comprises a first portion and a second portion, wherein the second portion is formed by the first portion extending to the first frame from a side close the first frame, and the distance between the second portion and the first frame is smaller than the thickness of the light guide plate. Accordingly, the length of the light guide plate is increased, and the increased portion of the light guide plate extends into the first frame, enabling the light rays emitted from the backlight source to completely illuminate the display region after being reflected by the light guide plate, which improves the display effect.

First claim

The invention claimed is:

1. A display panel comprising: a display substrate, an optical substrate, a light guide plate and a first frame; wherein:
the optical substrate is arranged between the display substrate and the light guide plate, and the first frame is arranged on the same side edge of the display substrate, the optical substrate and the light guide plate;
the light guide plate comprises a first portion and a second portion, wherein the second portion is formed by the first portion extending to the first frame from a side close to the first frame, and the distance between the second portion and the first frame is smaller than the thickness of the light guide plate;
wherein the light guide plate further comprises a plurality of reflectors, the of reflectors being at least arranged on a side surface of the second portion close to the first frame and on a horizontal surface of the first portion.

2. The display panel according to claim 1 , wherein the shape of a cross-section of the second portion comprises a triangle, a rectangle, a trapezoid, or an arc.

3. The display panel according to claim 1 , wherein each of the plurality of reflectors comprises a conic reflector, a cylindrical reflector, a cubic reflector, a triangular reflector, a rectangular reflector, a trapezoidal reflector or a rhombic reflector.

4. The display panel according to claim 1 , wherein the optical substrate extends to the first frame, and the distance between the optical substrate and the first frame is smaller than the thickness of the optical substrate.

5. The display panel according to claim 1 , wherein the display panel further comprises a back plate, the back plate being arranged on a side of the light guide plate facing away from the optical substrate.

6. The display panel according to claim 5 , wherein the display panel further comprises a second frame, the second frame being arranged between the light guide plate and the back plate.

7. The display panel according to claim 6 , wherein the second frame surrounds the light guide plate, and the shape of the second frame matches that of the light guide plate.

8. The display panel according to claim 5 , wherein the back plate further comprises a convex portion, the convex portion being arranged between the first frame and the light guide plate.

9. A display device, comprising the display panel according to claim 1 .

10. The display device according to claim 9 , wherein the shape of a cross-section of the second portion comprises a triangle, a rectangle, a trapezoid, or an arc.

11. The display device according to claim 9 , wherein each of the plurality of reflectors comprises a conic reflector, a cylindrical reflector, a cubic reflector, a triangular reflector, a rectangular reflector, a trapezoidal reflector or a rhombic reflector.

12. The display device according to claim 9 , wherein the optical substrate extends to the first frame, and the distance between the optical substrate and the first frame is smaller than the thickness of the optical substrate.

13. The display device according to claim 9 , wherein the display panel further comprises a back plate, the back plate being arranged on a side of the light guide plate facing away from the optical substrate.

14. The display device according to claim 13 , wherein the display panel further comprises a second frame, the second frame being arranged between the light guide plate and the back plate.

15. The display device according to claim 14 , wherein the second frame surrounds the light guide plate, and the shape of the second frame matches that of the light guide plate.

16. The display device according to claim 13 , wherein the back plate further comprises a convex portion, the convex portion being arranged between the first frame and the light guide plate.

Assignees

• Boe Technology Group Co Ltd
• Boe Optical Science & Technology Co Ltd
• Boe Optical Science And Techonology Co Ltd

Inventors

• Wang Tao
• Wu Chunming

Classifications

• G02B6/0058

  varying in density, size, shape or depth along the light guide · CPC title

• G02B5/0231

  the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045) · CPC title

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• G02B6/0036 Primary

  2-D arrangement of prisms, protrusions, indentations or roughened surfaces · CPC title

• G02B5/30

  Polarising elements (light-modulating devices with active elements G02F1/00) · CPC title