Backlight module, display module and display device

Patent metadata

Field	Value
Publication number	US-2016282540-A1
Application number	US-201514739371-A
Country	US
Kind code	A1
Filing date	Jun 15, 2015
Priority date	Mar 26, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

The present disclosure provides a backlight module, a display module and a display device. The backlight module includes a plurality of backlight components in connection. Each backlight component includes: a light guide plate; a plurality of light emitting diodes (LEDs) provided on a light entering side of the light guide plate; a deformable layer provided on a light exiting side of the light guide plate. A thickness of the deformable layer is changeable under a pressure so as to deflect original light rays from at least a portion of LEDs of the plurality of LEDs.

First claim

What is claimed is:

1 . A backlight module, comprising a plurality of backlight components in connection, wherein each backlight component comprises:
a light guide plate; a plurality of light emitting diodes (LEDs) provided on a light entering side of the light guide plate; a deformable layer provided on a light exiting side of the light guide plate, a thickness of the deformable layer being changeable under a pressure so as to deflect original light rays from at least a portion of LEDs of the plurality of LEDs.

2 . The backlight module according to claim 1 , wherein the deformable layer comprises:
a light deflection layer disposed on the light guide plate and a shell layer covering the light deflection layer; wherein the shell layer is deformable under an external pressure, a thickness of the light deflection layer is changed along with deformation of the shell layer, so as to deflect original light rays from at least a portion of LEDs of the plurality of LEDs.

3 . The backlight module according to claim 2 , wherein the shell layer is made of a transparent material; the light deflection layer is made of a transparent colorless liquid colloidal material.

4 . The backlight module according to claim 3 , wherein the liquid colloidal material is a silicone gel or an optical gel;
the shell layer is an organic substrate, a plastic substrate or a resin substrate.

5 . The backlight module according to claim 1 , wherein light rays are emitted from the plurality of LEDs along a predetermined direction; the predetermined direction is a direction substantially perpendicular to a light exiting surface of the light guide plate.

6 . The backlight module according to claim 1 , light rays emitted from the plurality of LEDs are parallel.

7 . The backlight module according to claim 2 , wherein light rays are emitted from the plurality of LEDs along a predetermined direction; the predetermined direction is a direction substantially perpendicular to a light exiting surface of the light guide plate.

8 . The backlight module according to claim 2 , light rays emitted from the plurality of LEDs are parallel.

9 . The backlight module according to claim 3 , wherein light rays are emitted from the plurality of LEDs along a predetermined direction; the predetermined direction is a direction substantially perpendicular to a light exiting surface of the light guide plate.

10 . The backlight module according to claim 3 , light rays emitted from the plurality of LEDs are parallel.

11 . The backlight module according to claim 4 , wherein light rays are emitted from the plurality of LEDs along a predetermined direction; the predetermined direction is a direction substantially perpendicular to a light exiting surface of the light guide plate.

12 . The backlight module according to claim 4 , light rays emitted from the plurality of LEDs are parallel.

13 . A display module, comprising a flexible display screen and a backlight module, wherein an air interlayer is provided between the flexible display screen and the backlight module; the backlight module comprises a plurality of backlight components in connection; each backlight component comprises:
a light guide plate; a plurality of light emitting diodes (LEDs) provided on a light entering side of the light guide plate; a deformable layer provided on a light exiting side of the light guide plate, a thickness of the deformable layer being changeable under a pressure so as to deflect original light rays from at least a portion of LEDs of the plurality of LEDs.

14 . The display module according to claim 13 , wherein the deformable layer comprises:
a light deflection layer disposed on the light guide plate and a shell layer covering the light deflection layer; wherein the shell layer is deformable under an external pressure; a thickness of the light deflection layer is changed along with deformation of the shell layer, so as to deflect original light rays from at least a portion of LEDs of the plurality of LEDs.

15 . The display module according to claim 14 , wherein the shell layer is made of a transparent material; the light deflection layer is made of a transparent colorless liquid colloidal material.

16 . The display module according to claim 15 , wherein the liquid colloidal material is a silicone gel or an optical gel;
the shell layer is an organic substrate, a plastic substrate or a resin substrate.

17 . The display module according to claim 13 , wherein light rays are emitted from the plurality of LEDs along a predetermined direction; the predetermined direction is a direction substantially perpendicular to a light exiting surface of the light guide plate.

18 . The display module according to claim 13 , light rays emitted from the plurality of LEDs are parallel.

19 . A display device, comprising the display module according to claim 13 .

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Shang
• Hu Chunjing

Classifications

• G02B6/0051 Primary

  Diffusing sheet or layer · CPC title

• G02B6/0068 Primary

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title

• G02B6/0078 Primary

  Side-by-side arrangements, e.g. for large area displays · CPC title

• G02B6/0053

  Prismatic sheet or layer; Brightness enhancement element, sheet or layer · CPC title

• G02F1/133611

  including means for improving the brightness uniformity · CPC title