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Backlight module capable of reducing required usage quantity of LEDs

A technology of backlight module and quantity, which is applied in the field of backlight module, can solve the problems of increasing production cost, fully utilizing the backlight source, and low light utilization rate of the backlight source, and achieves the effect of simple structure and low production cost

Inactive Publication Date: 2018-02-23
星星显示科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The backlight module in the prior art does not make full use of the backlight source in terms of structural design, resulting in a low light utilization rate of the backlight source, and then it is necessary to increase the number of LEDs required to achieve a certain light effect. increased production costs

Method used

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  • Backlight module capable of reducing required usage quantity of LEDs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A backlight module that can reduce the number of LEDs required in this embodiment, such as figure 1 As shown, it includes a back frame 1, a backlight 2 arranged in the back frame 1 and composed of a plurality of light emitting sources, a light guide plate 3 arranged on one side of the backlight 2, and a diffusion plate 4 arranged on the light guide plate 3 The side of the light guide plate 3 incident on the backlight 2 is provided with a light effect enhancing medium 9, the side of the light guide plate 3 opposite to the backlight 2 is provided with a first reflective film 10, and the side of the light guide plate 3 opposite to the diffusion plate 4 is provided with a second Two reflective films 11, the reflective surface of the first reflective film 10 faces the backlight 2, the reflective surface of the second reflective film 11 faces the diffuser plate 4; both ends of the side of the light guide plate 3 facing the backlight 2 are provided with chamfers 31; the backli...

Embodiment 2

[0049] Embodiment 2 of the backlight module of the present invention that can reduce the number of LEDs required is different from Embodiment 1 in that, in this embodiment, the angle of the chamfer 31 is set to 40 degrees. The chamfer 31 at this angle can increase the light incident area of ​​the light guide plate 3 , thereby reducing the number of LEDs required to be used. In this embodiment, the included angle between the first reflector 5 and the second reflector 6 relative to the horizontal line is set to be 10 degrees. The angle makes it possible to greatly increase the amount of light entering the light guide plate 3 through the first reflector 5 and the second reflector 6 , thereby increasing the utilization rate of light and reducing the required number of LEDs. In this embodiment, the radius of the semicircle is set to 0.5mm, and the spliced ​​corrugated surface of the semicircle of this radius enables the light to enter the diffuser plate 4 to undergo diffraction at ...

Embodiment 3

[0051] Embodiment 3 of a backlight module capable of reducing the required number of LEDs of the present invention is different from Embodiment 1 in that, in this embodiment, the angle of the chamfer 31 is set to 60 degrees. The chamfer 31 at this angle can increase the light incident area of ​​the light guide plate 3 , thereby reducing the number of LEDs required to be used. In this embodiment, the included angle between the first reflector 5 and the second reflector 6 relative to the horizontal line is set to be 30 degrees. The angle makes it possible to greatly increase the amount of light entering the light guide plate 3 through the first reflector 5 and the second reflector 6 , thereby increasing the utilization rate of light and reducing the required number of LEDs. In this embodiment, the radius of the semicircle is set to 0.01mm, and the spliced ​​corrugated surface of the semicircle of this radius enables the light to enter the diffuser plate 4 to undergo diffraction ...

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Abstract

The invention relates to the technical field of backlight modules, in particular to a backlight module capable of reducing the required usage quantity of LEDs. The backlight module comprises a back frame, a backlight source, a light guide plate and a diffusion plate, and a light effect enhancing medium is arranged on the side, where the backlight source enters, of the light guide plate; a first reflecting film is arranged on the side, opposite to the backlight source, of the light guide plate, and a second reflecting film is arranged on the side, opposite to the diffusion plate, of the light guide plate; the reflecting surface of the first reflecting film faces the backlight source, and the reflecting surface of the second reflecting film faces the diffusion plate; chamfers are arranged atthe two ends of the side, facing the backlight source, of the light guide plate; a first reflector is arranged on the lower portion, close to the light guide plate, of the backlight source; a secondreflector is arranged on the upper portion, close to the light guide plate, of the backlight source; the diffusion plate comprises a light-in surface and a light-out surface, the light-out surface ofthe diffusion plate is arranged to be a corrugated surface, the corrugated surface is formed by splicing a plurality of arc-shaped convex surfaces and a plurality of arc-shaped concave surfaces, and the concave faces and the convex surfaces are identical in shape. The backlight module can reduce the required usage quantity of the LEDs.

Description

technical field [0001] The invention relates to the technical field of backlight modules, in particular to a backlight module capable of reducing the number of LEDs required to be used. Background technique [0002] The structure of the liquid crystal display device includes a liquid crystal panel and a backlight module. The liquid crystal panel itself does not emit light, and needs the light source provided by the backlight module to display images normally. Therefore, the backlight module becomes one of the key components of the liquid crystal display device. According to different incidence modes of the light source, the backlight module can be divided into a direct-type backlight module and an edge-type backlight module. Among them, the side-type backlight module is to install the backlight LED strip on the edge of the back panel behind the liquid crystal panel. The light emitted by the LED strip enters the light guide plate from the light incident surface on one side o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00
CPCG02F1/133605G02B6/002G02F1/133606G02F1/133615
Inventor 王先玉王芳黎世林
Owner 星星显示科技(东莞)有限公司
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