Light guide plate and backlight module comprising the light guide plate

Patent metadata

Field	Value
Publication number	US-2019383991-A1
Application number	US-201715565452-A
Country	US
Kind code	A1
Filing date	Jul 13, 2017
Priority date	Jun 19, 2017
Publication date	Dec 19, 2019
Grant date	—

Abstract

Disclosed are a light guide plate and a backlight module including the light guide plate. The light guide plate includes multiple light guide plate segments, each of which is linear, and the multiple light guide plate segments are connected with each other successively to form an entire light guide plate. The entire light guide plate extends in a curved shape along a length direction thereof, and the entire light guide plate includes a light exiting surface and a light entering surface which is arranged at a side of the light exiting surface. The backlight module includes a light source, a plurality of quantum dot glass tubes which are connected with each other successively, and a light guide plate. The light source and the light entering surface of the light guide plate are arranged corresponding to each other, and each of the quantum dot glass tubes is arranged between the light source and a light guide plate segment correspondingly. By means of the light guide plate and the backlight module including the light guide plate, light coupling efficiency of the light guide plate and the quantum dot glass tubes can be improved, and an application range of the quantum dot glass tubes can be enlarged.

First claim

1 . A light guide plate, wherein the light guide plate comprises multiple light guide plate segments, each of which is linear, and the multiple light guide plate segments are connected with each other successively to form an entire light guide plate, wherein the entire light guide plate extends in a curved shape along a length direction thereof and the entire light guide plate comprises a light exiting surface and a light entering surface which is arranged at a side of the light exiting surface.

2 . The light guide plate according to claim 1 , wherein the light exiting surface is arranged on a top surface of the entire light guide plate, and the light entering surface is arranged at a lateral surface of the entire light guide plate, wherein the light entering surface is arranged along a length direction of the entire light guide plate.

3 . The light guide plate according to claim 1 , wherein the entire light guide plate is formed by jointing the multiple light guide plate segments, and the multiple light guide plate segments are formed by performing a heat press molding to the entire light guide plate by a mould.

4 . The light guide plate according to claim 1 , wherein an angle between two adjacent light guide plate segments is an obtuse angle, and a curvature of the entire light guide plate is adjusted by adjusting the angle between two adjacent light guide plate segments.

5 . The light guide plate according to claim 1 , wherein the entire light guide plate is made of polymethyl methacrylate or copolymer of methyl methacrylate and styrene.

6 . A backlight module, wherein the backlight module comprises a light source, a plurality of quantum dot glass tubes which are connected with each other successively, and a light guide plate, wherein the light guide plate comprises multiple light guide plate segments, each of which is linear, and the multiple light guide plate segments are connected with each other successively to form an entire light guide plate, wherein the entire light guide plate extends in a curved shape along a length direction thereof and the entire light guide plate comprises a light exiting surface and a light entering surface which is arranged at a side of the light exiting surface, and wherein the light source and the light entering surface of the light guide plate are arranged corresponding to each other, and each of the quantum dot glass tubes is arranged between the light source and a light guide plate segment correspondingly.

7 . The backlight module according to claim 6 , wherein the light source comprises a plurality of light bars which are jointed successively, wherein each light bar is arranged parallel to a quantum dot glass tube, and each quantum dot glass tube is arranged parallel to a light guide plate segment; and
wherein each light bar is provided with a plurality of light emitting diode light beads which are spaced from one another, face the quantum dot glass tubes, and emit light in a monochrome waveband.

8 . The backlight module according to claim 6 , wherein respective quantum dot glass tubes are jointed with each other successively.

9 . The backlight module according to claim 7 , wherein respective quantum dot glass tubes are jointed with each other successively.

10 . The backlight module according to claim 6 , wherein each of the quantum dot glass tubes is a linear quantum dot glass tube.

11 . The backlight module according to claim 6 , wherein a cross section of each of the quantum dot glass tubes is oval.

12 . The backlight module according to claim wherein a cross section of each of the quantum dot glass tubes is oval.

Assignees

• Shenzhen China Star Optoelect

Inventors

• Que Chengwen

Classifications

• G02B6/0068

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

• G02B6/0065

  Manufacturing aspects; Material aspects · CPC title

• G02B6/0078 Primary

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

• G02B6/0026

  Wavelength selective element, sheet or layer, e.g. filter or grating · CPC title

• G02B6/009

  of the light source in the package (G02B6/0021 takes precedence) · CPC title