Backlight module and LCD (liquid crystal display)

A backlight module and light source technology, applied in instruments, optics, light guides, etc., can solve the problems that affect the coupling efficiency, and the minimum coupling distance between the light source and the light guide plate cannot be guaranteed, and achieve the effect of ensuring the coupling efficiency.

Inactive Publication Date: 2014-05-21
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] An object of the present invention is to provide a backlight module to solve the problem in the prior art when the light guide plate changes along the gravity direction because the gravity direction of the light guide plate is perpendicular to the light coupling distance direction in the single short side light incident mode. , leading to the technical problem that the minimum light coupling distance between the light source and the light guide plate cannot be guaranteed, which in turn affects the light coupling efficiency

Method used

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  • Backlight module and LCD (liquid crystal display)
  • Backlight module and LCD (liquid crystal display)
  • Backlight module and LCD (liquid crystal display)

Examples

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Embodiment Construction

[0039] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced.

[0040] see image 3 , image 3 It is a structural schematic diagram of the first preferred embodiment of the backlight module in the present invention, Figure 4 for image 3 top view. The backlight module includes a light source 21 , a light guide plate 22 , a positioning column 23 and a supporting column 24 .

[0041] The light guide plate 22 includes a reflective surface 221 and a light-emitting surface 222, between which the reflective surface 221 and the light-emitting surface 222 include an upper bottom surface 223 and a supporting bottom surface 224, and also includes a left side 225 and a right side 226, wherein, The length of the upper bottom surface 223 or the supporting bottom surface 224 is greater than the length of the left side 225 or the right side 226 .

[0042]The support bot...

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Abstract

A backlight module. A reflection surface (221) and a light emergence surface (222) of a light guide plate (22) include two bottom surfaces therebetween, and the two bottom surfaces comprise one support bottom surface (224). The backlight module also includes support columns (24). The support bottom surface (224) is provided with inclined contact surfaces (227). The support columns (24) are attached to the inclined contact surfaces (227). The direction of gravity is parallel to the light source length direction, so when the light guide plate (22) moves along the gravity direction thereof, the action of a force is generated between same and the support columns (24). Also disclosed is a liquid crystal display having a backlight module.

Description

【Technical field】 [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display. 【Background technique】 [0002] The single-side incident light mode in the backlight module is becoming more and more popular. Among them, the single-side light input mode only needs to set the light source on one side of the light guide plate, so it can reduce the number of printed circuit boards, the number of heat sinks for light sources (such as LEDs), the number of light sources, the number of light source drive boards, and components. Quantity, number of channels, number of wires, and number of connectors, etc., and easy to assemble. [0003] see figure 1 , figure 1 It is a top-view structure schematic diagram of a backlight module with a single-side light incident mode in the prior art, and more specifically, the single-side light incident mode is a single long-side light incident mode. [0004] The back...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357F21S8/00F21V17/00
CPCG02B6/0091G02B6/0088G02B6/00G02B6/0046
Inventor 张光耀
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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