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Backlight module

A technology of backlight module and light guide module, which is applied in the direction of light guides, optics, optical components, etc., can solve the problems of unfavorable light, reduce the light incident rate of the light guide plate, and reduce the light incident efficiency of the light guide plate, so as to reduce the amount of light leakage, The effect of improving the utilization rate and improving the brightness of the light

Inactive Publication Date: 2015-06-17
FUTAIHUA PRECISION ELECTRONICS ZHENGZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the wide beam angle of the light source, no matter how the light guide is designed, some of the light cannot be fully reflected in the light guide and form light leakage, thereby reducing the amount of light entering the light guide plate
In addition, due to assembly and other reasons, the light guide and the light guide plate are not completely tightly fitted, and air gaps may be formed on the interface between the light guide and the light guide plate, which is not conducive to light entering the light guide plate from the light guide, thus making it difficult to enter the light guide plate. The light incident efficiency of the light board is greatly reduced
Therefore, the light output brightness of this backlight module is not high enough

Method used

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Embodiment Construction

[0016] The backlight module provided by the present invention will be further described in detail below with reference to the drawings and embodiments.

[0017] Please refer to figure 1 , the backlight module 100 provided by the embodiment of the present invention includes a light guide module 10 and a light source module 20 optically coupled with the light guide module 10 .

[0018] Please also refer to figure 2 and image 3 The light guide module 10 includes a back cover 11, a reflector 12, a light guide plate 13 fixed on the back cover 11, an optical film set 14 and an edge of the light guide plate 13 for holding the light guide plate 13 on the light guide plate 13. The plastic frame 15 on the back cover 11. The plastic frame 15 is connected to the top of the back cover 11 and closed with the back cover 11 to accommodate the light guide plate 13 and the optical film group 14 therein.

[0019] The rear cover 11 is integrally formed of metal material and has a rectangula...

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PUM

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Abstract

A direct-light type backlight module includes a light guide module, and a light source module configured for optical coupling to the light guide module. The light guide module includes a back cover and a light guide plate fixed on the back cover. The back cover includes a first light hole engaged with the light source module. The light source module includes a housing, a pair of light source panels, and a lens. The light source panels and the lens are received in the housing. The lens includes a first spotlight portion and a second spotlight portion attached to the corresponding light source panels, and a light-emitting portion configured for optically coupling to the first light-incoming hole.

Description

technical field [0001] The invention relates to a backlight module, in particular to a direct type backlight module. Background technique [0002] With the rapid development of the liquid crystal display industry, the application of various liquid crystal display panels continues to increase, and lighter and thinner products are constantly being introduced. However, since the liquid crystal panel of the liquid crystal display device cannot emit light, a backlight module needs to provide a light source to realize image display on the liquid crystal panel. However, with the continuous and rapid development of liquid crystal display devices, the backlight modules used in liquid crystal display devices increasingly need narrow borders and thinner profiles. [0003] A backlight module includes an optical film, a diffusion plate, a light guide plate, a light guide and a light source. The optical film is arranged above the diffuser plate, and the diffuser plate is arranged above ...

Claims

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Application Information

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IPC IPC(8): F21V8/00G02F1/13357
CPCG02F1/133603G02F1/133605G02F1/133606
Inventor 章绍汉
Owner FUTAIHUA PRECISION ELECTRONICS ZHENGZHOU