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Backlight and display device

A display device and backlight technology, which is applied in the display field, can solve problems such as poor optics and the proximity of the light bar to the light guide plate, and achieve the effect of ensuring the uniformity of light mixing and improving the display quality

Active Publication Date: 2014-10-01
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a backlight source and a display device, which are used to solve the problem of poor optics caused by the light bar being too close to the light guide plate due to design or temperature reasons in the side-type backlight source

Method used

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Experimental program
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Embodiment Construction

[0035] In the side-lit backlight, a certain light mixing distance must be maintained between the light bar and the incident surface of the light guide plate (from which light from the light bar enters the light guide plate). When designing, if the distance between the light bar and the incident surface of the light guide plate is too close, the light will be mixed unevenly, resulting in firefly phenomenon. Moreover, when working, if the higher temperature causes the light guide plate to expand and deform, it will also cause optical defects such as light leakage and mura.

[0036] In order to solve the above technical problems, the present invention provides a backlight, the distance between the light bar and the incident surface of the light guide plate is not fixed, but adjustable, so that the distance between the light bar and the incident surface of the light guide plate When the distance is too short, a certain light mixing distance can be maintained between the light bar ...

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PUM

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Abstract

The invention relates to the field of display techniques and discloses a backlight and a display device. The backlight comprises at least one adjusting module and at least one limiting structure, the adjusting module is used for moving a light bar to adjust the distance between the light bar and the incident plane of a light guide plate, the limiting structure is used for maintaining the distance between the light bar and the incident plane of the light guide plate to be the adjusted value to ensure that certain light mixing distance can be maintained between the light bar and the incident plane of the light guide plate, and accordingly uniformity of light mixing of the backlight can be guaranteed and display quality of products can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight source and a display device. Background technique [0002] Since the liquid crystal itself does not emit light, in various liquid crystal display devices (Liquid Crystal Display, hereinafter referred to as "LCD") such as liquid crystal monitors and liquid crystal TVs, it is necessary to rely on an external backlight source to realize display. Backlights are divided into two types: side-lit and direct-lit according to the distribution position, and side-lit backlights are widely used in small and medium-sized LCDs because of the advantages of fewer light-emitting devices required, low cost, and thin thickness. [0003] figure 1 Shown is a partial cross-sectional view of an edge-lit backlight, which includes a backplane 1, a light guide plate 2 and an optical film 3 sequentially arranged above the backplane 1 from bottom to top, and also includes lights arranged adjac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V8/00F21V14/02G02F1/13357F21Y101/02F21Y115/10
Inventor 朱红丽孙文佳张亮朴仁镐
Owner BOE TECH GRP CO LTD