Backlight assembly and display apparatus

Patent metadata

Field	Value
Publication number	US-10557985-B2
Application number	US-201615324696-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	Nov 5, 2015
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

A backlight assembly includes: a frame with at least one support bar configured to support a display panel; a light guide plate with at least one support portion protruding from at least one side of the light guide plate; and a film assembly including an optical film between the at least one support bar and the light guide plate, wherein the optical film is provided with at least one flange protruding from at least one side of the optical film assembly and over the at least one support portion on a surface of the at least one support portion facing the at least one support bar.

First claim

The invention claimed is:

1. A backlight assembly, comprising:
a frame with at least one support bar configured to support a display panel;
a light guide plate with at least one support portion protruding from at least one side of the light guide plate; and
a film assembly comprising an optical film between the at least one support bar and the light guide plate, wherein the optical film is provided with at least one flange protruding from at least one side of the optical film assembly and over the at least one support portion of the light guide plate on a surface of the at least one support portion of the light guide plate facing the at least one support bar;
wherein the at least one flange has a side aligned with a side of the at least one support portion; and
wherein the at least one support bar is integrally formed with the frame.

2. The backlight assembly of claim 1 , further comprising:
a backplane with a bottom plate and at least one side plate surrounding the bottom plate;
wherein each of the at least one side plate of the backplane comprises at least one slot configured to hold the at least one support portion and the at least one flange.

3. The backlight assembly of claim 2 , wherein:
the backplane has a U-shaped cross section; and
the at least one support portion is over the at least one side plate of the backplane at an end surface facing the at least one support bar.

4. The backlight assembly of claim 3 , wherein a side surface of a protruding end of the at least one support portion is aligned with an outer wall of the at least one side plate of the backplane.

5. The backlight assembly of claim 4 , wherein the at least one support portion is mounted over the at least one side plate of the backplane via adhesive bonding.

6. The backlight assembly of claim 2 , wherein the backplane and the frame are coupled via adhesive bonding.

7. The backlight assembly of claim 6 , wherein the backplane and the frame are coupled via a double-sided adhesive tape.

8. The backlight assembly of claim 2 , wherein the backplane and the frame are coupled via snap-fit connection.

9. The backlight assembly of claim 2 , wherein the backplane and the frame are integrally formed.

10. The backlight assembly of claim 9 , wherein the frame is formed by injection molding on the backplane.

11. The backlight assembly of claim 2 , wherein the at least one slot has a shape configured to fit with the at least one flange and the at least one support portion.

12. The backlight assembly of claim 11 , wherein the shape of the at least one slot is rectangular.

13. The backlight assembly of claim 1 , wherein the at least one flange of the optical film is over the at least one support portion via at least one shading tape.

14. The backlight assembly of claim 1 , wherein each flange corresponds to one support portion of the light guide plate, and has a side aligned with a side of the corresponding support portion.

15. The backlight assembly of claim 1 , wherein a surface area of the support portion is no less than a surface area of the flange.

16. The backlight assembly of claim 15 , wherein the surface area of the support portion equals the surface area of the flange.

17. The backlight assembly of claim 1 , wherein the at least one flange and the at least one support portion both have a substantially same shape.

18. The backlight assembly of claim 17 , wherein the shape is one of rectangle, square, semicircle, or trapezoid.

19. The backlight assembly of claim 1 , wherein the at least one support portion of the light guide plate is evenly spaced along each of the at least one side of the light guide plate.

20. A display apparatus, comprising a backlight assembly, wherein the backlight assembly comprises:
a frame with at least one support bar configured to support a display panel;
a light guide plate with at least one support portion protruding from at least one side of the light guide plate; and
a film assembly comprising an optical film between the at least one support bar and the light guide plate, wherein the optical film is provided with at least one flange protruding from at least one side of the optical film assembly and over the at least one support portion of the light guide plate on a surface of the at least one support portion of the light guide plate facing the at least one support bar;
wherein the at least one flange has a side aligned with a side of the at least one support portion; and
wherein the at least one support bar is integrally formed with the frame.

Assignees

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

Inventors

• Chen Huafeng
• Wu Chunming

Classifications

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133603

  with LEDs · CPC title

• G02F2201/46

  Fixing elements · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title

• G02B6/0073 Primary

  Light emitting diode [LED] · CPC title