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A backlight module

A backlight module and light guide plate technology, applied in optics, light guides, light sources, etc., can solve the problems of reducing the brightness of the surface light source of the backlight module, the loss of incident light energy of the LED light bar, and affecting the display effect of the liquid crystal display, etc., to improve the display effect , Improve the effect of brightness

Inactive Publication Date: 2009-12-16
COMP APPL TECH INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the backlight module of liquid crystal display usually adopts side cold cathode fluorescent tube type backlight module and LED backlight module. There are no reflective sheets on the upper and lower end faces. The setting of this reflective sheet will cause the incident light entering the light guide plate from the LED light bar to leave the light guide plate from the other side of the light incident surface of the light guide plate, thus causing the incident light of the LED light bar The energy loss of light reduces the brightness of the surface light source provided by the backlight module and affects the display effect of the liquid crystal display

Method used

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Examples

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Embodiment Construction

[0011] The preferred embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] Such as figure 1 , 2 As shown in , 3 , a backlight module includes a light guide plate 1 , an LED light bar 2 , a reflection sheet 3 and a metal frame 4 . The metal frame 4 is used to clamp and position the light guide plate 1, the LED light bar 2 and the reflector 3; the LED light bar 2 is arranged on the upper and lower sides of the light guide plate 1 to provide the required light source for the liquid crystal display; the reflector 3 is a rectangular structure with two-sided bends, such as Figure 4 As shown, it is arranged on the back surface and the left and right end surfaces of the light guide plate 1, Figure 4 The dotted line in is the bending line of the reflection sheet 3 . A reflective block 5 is set between the LED arrays of the LED light bar 2. The shape of the reflective block 5 is determined according to the speci...

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PUM

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Abstract

The invention belongs to the technical field of liquid crystal display, specially relates to a backlight module. The backlight module includes a light guidance board, an LED lamp strip, a reflection sheet, and a metal frame which is used to hold and fix the light guidance board, the LED lamp strip, and the reflection sheet. The LED lamp strip is disposed on the upper and lower side of the light guidance board. The reflection sheet is in a rectangular structure having bending on both side, which is disposed on the back surface and two end surfaces on the left and right. A reflection block is disposed between the LED lamp strip and the LED array The invention enhances brightness of the surface light source provided by the backlight module, and improves the display effect for the liquid crystal display.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal displays, and in particular relates to a backlight module. Background technique [0002] The backlight module is an important part of the liquid crystal display, which is arranged at the back end of the liquid crystal display to provide the required light source for the liquid crystal display. At present, the backlight module of liquid crystal display usually adopts side cold cathode fluorescent tube type backlight module and LED backlight module. There are no reflective sheets on the upper and lower end faces. The setting of this reflective sheet will cause the incident light entering the light guide plate from the LED light bar to leave the light guide plate from the other side of the light incident surface of the light guide plate, thus causing the incident light of the LED light bar The energy loss of light reduces the brightness of the surface light source provided by the backlight mo...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V7/04F21V7/22F21V8/00F21V17/10G02F1/13357F21Y101/02F21Y115/10G02F1/1335
Inventor 吴涛商福亮陈旭升张芳董欣钱毅李涛杨松龄
Owner COMP APPL TECH INST OF CHINA NORTH IND GRP
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