Backlight module and a liquid crystal display using the same

Patent metadata

Field	Value
Publication number	US-2016341885-A1
Application number	US-201514423102-A
Country	US
Kind code	A1
Filing date	Jan 14, 2015
Priority date	Dec 31, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

The present invention discloses a backlight module, comprising: a light guide plate, a glue frame, and a reflective film, the light guide plate comprises a side face and a bottom face, a bottom of the glue frame faces toward the side face and extends to match between the side face and the bottom face, the reflective film is disposed under the light guide plate and the glue frame, and the reflective film is adhered to a bottom surface of the glue frame. The present invention further discloses a Liquid Crystal Display with the backlight module. In the present invention, an area of the bottom surface of the glue frame can be enlarged by extending the bottom of the glue frame toward the side face of the light guide plate, and then have an adhered area between the reflective film and the bottom surface of the glue frame to further improve the adhered fastening degree and increase reliabilities.

First claim

1 . A backlight module, wherein, comprising a light guide plate, a glue frame, and a reflective film, the light guide plate comprises a side face and a bottom face, a bottom of the glue frame faces toward the side face and extends to match between the side face and the bottom face, the reflective film is disposed under the light guide plate and the glue frame, and the reflective film is adhered to a bottom surface of the glue frame.

2 . The backlight module of claim 1 , wherein, a receiving groove is formed between the side face and the bottom face, the bottom of the glue frame extends an extension portion toward the side face, and the extension portion is received correspondingly within the receiving groove.

3 . The backlight module of claim 1 , wherein, an inclined surface is disposed between the side face and the bottom face, a slanting surface is disposed between an inner side face and the bottom surface of the glue frame, and the slanting surface and the inclined surface are matching correspondingly.

4 . The backlight module of claim 3 , wherein, an included angle between the inclined surface and the side face is an obtuse angle, and an included angle between the inclined surface and the bottom face is an obtuse angle.

5 . The backlight module of claim 1 , wherein, a first arc is disposed between the side face and the bottom face, a second arc is disposed between a inner side face and the bottom surface of the glue frame, and the first arc and the sec and arc are matching correspondingly.

6 . The backlight module of claim 5 , wherein, the first arc is convex toward the inner side face of the glue frame, and the second arc is convex toward an outer side face of the glue frame.

7 . The backlight module of claim 1 , wherein, the reflective film is adhered to the bottom surface of the glue frame by a double-sided tape.

8 . The backlight module of claim 1 , wherein, the backlight module further comprises: a light shielding portion and several optical films, the several optical films are disposed on the light guide plate, and the light shielding portion is disposed on the several optical films and the glue frame.

9 . The backlight module of claim 8 , wherein, the light shielding portion is a light shielding tape.

10 . A liquid crystal display comprises a liquid crystal display panel and a backlight module disposed correspondingly to the liquid crystal display panel, wherein, the backlight module comprises, a light guide plate, a glue frame and a reflective film, the light guide plate comprises a side face and a bottom face, a bottom of the glue frame faces toward the side face and extends to match between the side face and the bottom face, the reflective film is disposed under the light guide plate and the glue frame, and the reflective film is adhered to a bottom surface of the glue frame.

11 . The liquid crystal display according to claim 10 , wherein, a receiving groove is formed between the side face and the bottom face, the bottom of the glue frame extends a extension portion toward the side face, and the extension portion is received correspondingly within the receiving groove.

12 . The liquid crystal display according to claim 10 , wherein, an inclined surface is disposed between the side face and the bottom face, a slanting surface is disposed between an inner side face and the bottom surface of the glue frame, and the slanting surface and the inclined surface are matching correspondingly.

13 . The liquid crystal display according to claim 12 , wherein, an included angle between the inclined surface and the side face is an obtuse angle, and an included angle between the inclined surface and the bottom face is an obtuse angle.

14 . The liquid crystal display according to claim 10 , wherein, a first arc is disposed between the side face and the bottom face, a second arc is disposed between a inner side face and the bottom surface of the glue frame, and the first arc and the second arc are matching correspondingly.

15 . The liquid crystal display according to claim 14 , wherein, the first arc is convex toward the inner side face of the glue frame, and the second arc is convex toward an outer side face of the glue frame.

16 . The liquid crystal display according to claim 10 , wherein, the reflective film is adhered to the bottom surface of the glue frame by a double-sided tape.

17 . The liquid crystal display according to claim 10 , wherein, the backlight module further comprises: a light shielding portion and several optical films, the several optical films are disposed on the light guide plate, and the light shielding portion is disposed on the several optical films and the glue frame.

18 . The liquid crystal display according to claim 17 , wherein, the light shielding portion is a light shielding tape.

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelect

Inventors

• Xie Chen
• Liu Zhongjie

Classifications

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02B6/0055

  Reflecting element, sheet or layer · CPC title

• G02B6/0088 Primary

  of the light guide or other optical sheets in the package · CPC title

• G02B6/005

  provided by one optical element, or plurality thereof, placed on the light output side of the light guide · CPC title