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A direct type backlight source and display device

A direct type, backlight technology, applied in the direction of electric light source, lighting device, fixed lighting device, etc., can solve the problems of increased thickness of backlight module and increased cost of backlight, so as to reduce the height of mixed light and facilitate thinning Effect

Inactive Publication Date: 2014-10-22
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adoption of the above two solutions will significantly increase the cost of the backlight source and increase the thickness of the backlight module, which is not an ideal solution.

Method used

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  • A direct type backlight source and display device
  • A direct type backlight source and display device
  • A direct type backlight source and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 2 As shown, the direct-lit backlight of this embodiment includes: a light source 1 and a light source bracket 9 for fixing the light source 1, the light source bracket 9 is fixed on the backplane 3, and the light source bracket 9 is arranged in a V-shaped structure, The light source 1 is fixed on the outer sides of the two wings of the light source bracket 9, so that the light emitted by the light source 1 is emitted obliquely downward; A second reflective film 11 is laid on the backboard 3 on both sides of the light source bracket 9 .

[0025] With the above structure, the light is emitted from the light source 1 to the second reflective film 11 and is reflected to the diffuser plate 4 by reflection, and reaches the optical film material 5 through the diffuser plate. A part of the light passes through the optical film material 5, and the other part is reflected back. The returned light propagates back and forth between the optical film material 5 and the ...

Embodiment 2

[0032] like Figure 5 As shown, the direct-lit backlight in this embodiment includes: a light source 1 and a light source bracket 9 for fixing the light source 1, the light source bracket 9 is fixed on the backplane 3, and the light source bracket 9 is set as a U-shaped structure, so The light source 1 is fixed on the outside of the two wings of the light source bracket 9 of the U-shaped structure, so that the light emitted by the light source 1 is emitted obliquely downward; a first reflection film 10 is attached to the inside of the two wings of the light source bracket 9, and the A second reflective film 11 is laid on the side of the back plate 3 where the light source bracket is provided.

[0033] With the above structure, the light is emitted from the light source 1 to the second reflective film 11 and is reflected to the diffuser plate 4 by reflection, and reaches the optical film material 5 through the diffuser plate. A part of the light passes through the optical film ...

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Abstract

The invention provides a backlight structure which is applied to liquid crystal displays. The backlight structure comprises a light source which is positioned at two sides of a light source bracket and used as a main light source of the backlight; the light source bracket is in a V-shaped or U-shaped structure and enables light to exit downwards; the light source bracket is connected with a back plate through a rotating shaft to adjust the angle between two wings of the light source bracket and the back plate; and the side of the light source bracket, opposite to a diffuser plate, is a first reflecting face, and the upper face of the back plate at two sides of the light source bracket is a second reflecting face. The reflecting faces are used for reflecting light, so that the light path is elongated, and the mixed light height is reduced, thereby being beneficial for forming thin backlight modules.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a direct-type backlight source structure. Background technique [0002] At present, the backlight source in the liquid crystal display device is divided into two technical camps, which are the direct-type backlight structure and the side-type backlight structure. [0003] Take LED (Light Emitting Diode, light emitting diode) backlight as an example, such as figure 1 Shown is a realization structure of a direct-type LED backlight; wherein, the LED lamp 1 is covered with a prism 2, and the prism 2 diffuses the light source emitted by the LED lamp to the diffusion plate 4 and the optical film material 5, and finally provides the liquid crystal panel 6 provides a light source. However, due to the low light mixing height, the light cannot fully cross, resulting in unevenness between the dark area 7 and the bright area 8 on the screen. [0004] In order to improve the uniformity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V13/00G02F1/13357
Inventor 朱红丽陈秀云
Owner BOE TECH GRP CO LTD