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Backlight module and display device using the backlight module

A technology of backlight module and light source device, which is applied in the direction of lighting devices, fixed lighting devices, parts of lighting devices, etc., which can solve the problems of increasing the overall power consumption and price of the backlight module, increasing the overall thickness of the display device, and not meeting the energy saving requirements. Requirements and other issues to achieve the effect of improving display quality, enhancing uniformity, and reducing the number of pixels

Inactive Publication Date: 2016-03-30
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are certain defects in each of the above three methods: increasing the number of LED lamps 2' will inevitably increase the overall power consumption and price of the backlight module, which does not meet the requirements for energy saving; increasing the light mixing distance will increase the thickness of the backlight module accordingly, resulting in increased The overall thickness of the display device using this backlight module does not meet the requirements of lightness and thinness; the third method is to increase the light-emitting angle of LEDs, which is the most common and effective method currently used in direct-lit backlight modules.
However, this method requires an additional optical lens 4', which will also increase the cost of the backlight module

Method used

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  • Backlight module and display device using the backlight module
  • Backlight module and display device using the backlight module
  • Backlight module and display device using the backlight module

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 2 , image 3 As shown, the embodiment of the backlight module of the present invention includes a diffuser plate 1 and a light source device 2 and a first reflector 3 that are both arranged on the back side of the diffuser plate 1 . The light source device 2 is disposed between the diffuser plate 1 and the first reflection plate 3 for providing light to the diffuser plate 1 . The light emitting surface of the light source device 2 faces the first reflector 3 , and the first reflector 3 reflects the light emitted by the light source device 2 to the diffusion plate 1 . The back plate 6 is disposed on the back of the first reflection plate 3 for enhancing the overall strength of the backlight module. image 3 The hollow arrows in show the light propagation path.

[0031] In the embodiment of the backlight module of the present invention, the light emitted by the light source device in the direct type backlight module does not directly enter the diffusion...

Embodiment 2

[0042] combine Figure 5 As shown, the difference between the embodiment of the backlight module of the present invention and the first embodiment lies in the arrangement of the light source 5 in the light source device 2 .

[0043] In the embodiment of the backlight module of the present invention, the light source 5 is fixed on the inner surface of the first board 11 . The light emitted by the light source 5 is reflected by the second plate body 12 and the third plate body 13 to the first reflection plate 3 , and the first reflection plate 3 reflects the light to the diffuser plate 1 . Figure 5 The hollow arrows in show the light propagation path.

Embodiment 3

[0045] combine Image 6 As shown, the difference between the embodiment of the backlight module of the present invention and Embodiment 1 and Embodiment 2 lies in the arrangement of the light sources 5 in the light source device 2 .

[0046] In the embodiment of the backlight module of the present invention, the light source 5 is fixed on the surface of the second plate 12 facing the first reflector 3 and the inner surface of the first plate 11 . The light emitted by the light source 5 is either reflected by the second board 12 and the third board 13 to the first reflector 3 , or directly hits the first reflector 3 , and the first reflector 3 reflects the light to the diffuser 1 .

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Abstract

The invention provides a backlight module and a display device utilizing the same. The backlight module comprises a diffusion plate as well as a light source device and a first reflection plate, wherein the light source device is arranged between the diffusion plate and the first reflection plate, a light emitting surface of the light source device faces towards the first reflection plate, and the light transmitted by the light source device is reflected by the first reflection plate to the diffusion plate. The display device utilizing the backlight module comprises the backlight module. Due to the adoption of the backlight module, light spots with non-uniformity in brightness can be prevented from being formed on the front surface of the diffusion plate, so that the quantity of light emitting diode (LED) lamps used in the traditional direct-type backlight module can be reduced, or the overall thickness of the backlight module can be reduced, and an effect for utilizing an optical lens in the traditional direct-type backlight module can be realized under the situation that no optical lens is used. The display device utilizes the backlight module, so that the display quality is greatly improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device using the backlight module. Background technique [0002] The backlight module is one of the important components of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and evenly distributed light source, so that the liquid crystal display can display images normally. At present, the display technology of liquid crystal display has become mature, especially in the design of the backlight module. In addition to being used in liquid crystal display devices such as liquid crystal displays and liquid crystal televisions, backlight modules can also provide light sources for display devices such as digital photo frames, electronic paper, and mobile phones. [0003] The backlight module is divided into an edge-type backlight module and a direct-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V13/04F21V17/00G02F1/13357F21Y101/02F21Y115/10
Inventor 雷嗣军马青尹大根尚飞
Owner BOE TECH GRP CO LTD
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