Mobile device and liquid crystal screen backlight module

Patent metadata

Field	Value
Publication number	US-12379624-B2
Application number	US-202218574758-A
Country	US
Kind code	B2
Filing date	May 7, 2022
Priority date	Jul 2, 2021
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

Disclosed in the present application is a liquid crystal screen backlight module. The liquid crystal screen backlight module comprises: a light emitting assembly; a light guide plate, one end face of the light guide plate being in full lamination with the light emitting assembly, and the other end face of the light guide plate being provided with a plurality of recessed dots; a touch panel, disposed on the end face of the light guide plate away from the light emitting assembly; and a transparent photoconductive member, one end face of the transparent photoconductive member being in frame lamination with the light guide plate, and the other end surface of the transparent photoconductive member being in full lamination with the touch panel.

First claim

What is claimed is:

1. A liquid crystal screen backlight module, comprising:
a light emitting assembly;
a light guide plate, wherein one end face of the light guide plate is connected to the light emitting assembly in a full lamination, and another end face of the light guide plate is provided with a plurality of concave mesh points;
a touch panel disposed on an end face of the light guide plate away from the light emitting assembly; and
a transparent light conducting member, wherein one end face of the transparent light conducting member is connected to the light guide plate in a frame lamination, and another end face of the transparent light conducting member is connected to the touch panel in the full lamination.

2. The liquid crystal screen backlight module of claim 1 , wherein the light guide plate is connected to the light emitting assembly by a transparent adhesive layer; and
the end surfaces of the transparent light conducting member are connected to the light guide plate and the touch panel through the transparent adhesive layer, respectively.

3. The liquid crystal screen backlight module of claim 2 , wherein the transparent adhesive layer comprises a transparent optical resin adhesive.

4. The liquid crystal screen backlight module of claim 3 , wherein the transparent optical resin adhesive includes an Optically Clear Adhesive (OCA) or an Optical Clear Resin (OCR).

5. The liquid crystal screen backlight module of claim 2 , wherein the transparent adhesive layer is distributed between two opposite end faces of the transparent light conducting member and the light guide plate in a shape of a rectangle.

6. The liquid crystal screen backlight module of claim 2 , wherein an edge of one end surface of the light guide plate close to the transparent light conducting member is recessed downward to form a stepped surface, and the transparent adhesive layer is disposed between the stepped surface and the transparent light conducting member.

7. The liquid crystal screen backlight module of claim 1 , wherein vacuum extraction is performed between the transparent light conducting member and the light guide plate to enable the transparent light conducting member to closely laminate the light guide plate.

8. The liquid crystal screen backlight module of claim 1 , wherein the light emitting assembly comprises:
Liquid Crystal Display (LCD) glass;
a flexible circuit board disposed on an end face of the LCD glass close to the light guide plate; and
Light Emitting Diode (LED) lamp beads electrically connected to the flexible circuit board to provide one or more line light sources.

9. The liquid crystal screen backlight module of claim 8 , wherein the LED lamp beads are distributed on the LCD glass in a direct-lit manner or an edge-lit manner.

10. The liquid crystal screen backlight module of claim 1 , wherein the transparent light conducting member comprises a Polyester Film (PET) transparent film transparent film or a Polyimide Film (PI) transparent film.

11. A mobile device, comprising a liquid crystal screen backlight module, wherein the liquid crystal screen backlight module comprises:
a light emitting assembly;
a light guide plate, wherein one end face of the light guide plate is connected to the light emitting assembly in a full lamination, and another end face of the light guide plate is provided with a plurality of concave mesh points;
a touch panel disposed on an end face of the light guide plate away from the light emitting assembly; and
a transparent light conducting member, wherein one end face of the transparent light conducting member is connected to the light guide plate in a frame lamination, and another end face of the transparent light conducting member is connected to the touch panel in the full lamination.

12. The mobile device of claim 11 , wherein the light guide plate is connected to the light emitting assembly by a transparent adhesive layer; and
the end surfaces of the transparent light conducting member are respectively connected to the light guide plate and the touch panel through the transparent adhesive layer.

13. The mobile device of claim 12 , wherein the transparent adhesive layer comprises a transparent optical resin adhesive.

14. The mobile device of claim 13 , wherein the transparent optical resin adhesive includes an Optically Clear Adhesive (OCA) or an Optical Clear Resin (OCR).

15. The mobile device of claim 12 , wherein the transparent adhesive layer is distributed between two opposite end faces of the transparent light conducting member and the light guide plate in a shape of a rectangle.

16. The mobile device of claim 12 , wherein an edge of one end surface of the light guide plate close to the transparent light conducting member is recessed downward to form a stepped surface, and the transparent adhesive layer is disposed between the stepped surface and the transparent light conducting member.

17. The mobile device of claim 11 , wherein vacuum extraction is performed between the transparent light conducting member and the light guide plate to enable the transparent light conducting member to closely laminate the light guide plate.

18. The mobile device of claim 11 , wherein the light emitting assembly comprises:
Liquid Crystal Display (LCD) glass;
a flexible circuit board disposed on an end face of the LCD glass close to the light guide plate; and
Light Emitting Diode (LED) lamp beads electrically connected to the flexible circuit board to provide one or more line light sources.

19. The mobile device of claim 18 , wherein the LED lamp beads are distributed on the LCD glass in a direct-lit manner or an edge-lit manner.

20. The mobile device of claim 11 , wherein the transparent light conducting member comprises a Polyester Film (PET) transparent film transparent film or a Polyimide Film (PI) transparent film.

Assignees

• Jrd Communication Shenzhen Ltd

Inventors

• Ma Jitao
• Yu Yang
• Lin Ke

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G02B6/0073

  Light emitting diode [LED] · CPC title

• G02F1/133612 Primary

  Electrical details · CPC title