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Backlight module and display device with same

A backlight module and display device technology, which is applied in lighting devices, fixed lighting devices, optics, etc., can solve the problems of reduced light uniformity of the backlight module, and achieve the effect of improving the uniformity of light output

Inactive Publication Date: 2015-02-25
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of thinner liquid crystal displays and narrower borders, the distance between the point light source and the light incident surface is further reduced, which reduces the light uniformity of the backlight module.

Method used

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  • Backlight module and display device with same
  • Backlight module and display device with same
  • Backlight module and display device with same

Examples

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Effect test

Embodiment Construction

[0015] see figure 1 with figure 2 , the backlight module 100 according to the first embodiment of the present invention is applied to a display device (not shown in the figure), so as to provide a backlight for the display device. The backlight module 100 includes a light guide plate 10 and several point light sources 20 . In the first embodiment, the point light source 20 is a light emitting diode (Light Emitting Diode, LED).

[0016] The light guide plate 10 is substantially in the shape of a cuboid plate, and includes a first surface 11 opposite to the point light source 20 and a plurality of protrusions 12 protruding outward from the first surface 11 . Several protruding parts 12 are arranged at equal intervals, and each protruding part 12 is arranged opposite to one point light source 20 . The protrusion 12 includes a second surface 121 opposite to the point light source 20 . The width of the second surface 121 is larger than the width of the point light source 20 . ...

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PUM

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Abstract

A backlight module comprises a light guide plate and a plurality of point light sources. The light guide plate comprises a first surface facing the point light sources and a plurality of protrusions arranged on the first surface. The protrusions correspond to the point light sources. Each protrusion comprises a second surface facing the point light sources; the second surface is provided with a plurality of microstructures, and thus, light emitted by the point light sources enter the light guide plate through the second surface, at a larger divergence angle. In addition, the invention further provides a display device with the backlight module.

Description

technical field [0001] The invention relates to a backlight module and a display device with the backlight module. Background technique [0002] A backlight module in a liquid crystal display usually includes a light guide plate and several point light sources. Several point light sources are arranged correspondingly to the light incident surface of the light guide plate. Usually, there is a certain distance between the point light source and the light incident surface, so as to improve the uniformity of light output of the backlight module. However, with the development of thinner liquid crystal displays and narrower borders, the distance between the point light source and the light incident surface is further reduced, which reduces the uniformity of light output from the backlight module. Contents of the invention [0003] In view of this, it is necessary to provide a backlight module capable of improving light uniformity. [0004] In addition, it is also necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V8/00G02F1/13357F21Y101/02
CPCG02B6/0018G02B6/0068G02F1/133606G02F1/133607
Inventor 李政纬
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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