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Backlight module

A backlight module and light source technology, applied in optics, light guides, light sources, etc., can solve the problems of reduced light efficiency of the backlight module and unusable light

Inactive Publication Date: 2017-02-08
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

The plurality of light emitting diode light sources are arranged horizontally, so that part of the light parallel to the top surface of the light guide plate cannot be guided out from the top surface of the light guide plate after entering the light guide plate, but directly from the side of the light guide plate away from the light emitting diode light source In this way, this part of the light cannot be used, thus reducing the light efficiency of the backlight module

Method used

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Embodiment Construction

[0013] like figure 1 and figure 2 As shown, a backlight module 1 provided by a preferred embodiment of the present invention includes a light guide plate 10 and a plurality of LED light sources 20 arranged on the side of the light guide plate 10 .

[0014] The light guide plate 10 is roughly a rectangular plate body, and the critical angle of total reflection when the light inside it strikes the air is β. The light guide plate 10 has a top surface 11 and a bottom surface 12 opposite to the top surface 11 , and a front side 13 , a rear side 14 , a left side 15 and a right side 16 connecting the top surface 11 and the bottom surface 12 .

[0015] The top surface 11 is smooth and flat, and the bottom surface 12 is provided with a plurality of protruding strips 121 arranged adjacently and continuously, and a reflective layer is provided thereon. The protrusions 121 extend from the left side 15 to the right side 16 of the light guide plate 10 and are arranged parallel to each ot...

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Abstract

A backlight module comprises a light guide plate and a plurality of light-emitting diode light sources arranged in the side direction of the light guide plate. The light guide plate is provided with a top surface and a bottom surface opposite to the top surface. A groove sunken in the direction far away from the light-emitting diode light sources is formed in one side, close to the light-emitting diode light sources, of the light guide plate. The extension direction of the groove and the arrangement direction of the light-emitting diode light sources are the same. The groove enables external light shining on the groove to be refracted, and then the original direction of the light is changed. A reflection layer is arranged on the bottom surface.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module which improves the utilization rate of light. Background technique [0002] Compared with traditional light sources, light emitting diodes (Light Emitting Diode, LED) have the advantages of light weight, small size, low pollution, long life, etc. As a new type of light source, it has been increasingly used in in various fields. [0003] However, the backlight module of the liquid crystal panel generally includes a light guide plate and a plurality of light emitting diode light sources disposed on the side of the light guide plate. The plurality of light emitting diode light sources are arranged horizontally, so that part of the light parallel to the top surface of the light guide plate cannot be guided out from the top surface of the light guide plate after entering the light guide plate, but directly from the side of the light guide plate away from the light emitting dio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V8/00F21Y115/10
Inventor 陈柏洲
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD