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Light guide plate, backlight source and liquid crystal display device

A technology of liquid crystal display device and light guide plate, which is applied in the field of backlight source, can solve the problems that cannot be further improved, the brightness and uniformity of the light guide plate are limited, and the density of dots is limited, so as to reduce production costs and increase brightness and uniformity , Improve the effect of light guide efficiency

Inactive Publication Date: 2010-02-24
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The defect of the prior art is that, since only the bottom of the light guide plate is provided with microstructures, the density of dots in the microstructures is limited, resulting in limited brightness and uniformity of the entire light guide plate when the energy of the light source remains constant. no further improvement

Method used

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  • Light guide plate, backlight source and liquid crystal display device
  • Light guide plate, backlight source and liquid crystal display device
  • Light guide plate, backlight source and liquid crystal display device

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Embodiment Construction

[0018] The light guide plate according to the embodiment of the present invention includes a top surface and a bottom surface, both of which are provided with microstructures. The dots of the microstructure can be truncated conical protrusions, ellipsoids, triangular pyramids, pyramids, V-shaped protrusions or grooves. The dots in these microstructures can be randomly arranged, or arranged in the order of density or gradually darker or shallower, or arranged in the order of density or gradually darker or shallower as a whole, and can be set randomly locally. Wherein, the randomly arranged positions are obtained through computer random algorithm calculation.

[0019] In this embodiment, the microstructure provided on the top surface of the light guide plate makes up for the lack of uniformity and brightness of the overall light guide plate by the microstructure on the bottom surface, thereby increasing the overall brightness, improving the efficacy of the overall uniformity and...

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Abstract

The invention relates to a light guide plate, a backlight source and a liquid crystal display device. The light guide plate comprises a top surface and a bottom surface, and the top surface and the bottom surface are provided with a microstructure respectively; the backlight source comprises any light guide plate provided by the technical scheme; and the liquid crystal display device comprises thebacklight source provided by the technical scheme. The top surface and the bottom surface of the light guide plate are provided with the microstructures, and the microstructure arranged on the top surface makes up the deficient overall evenness and brightness to the light guide plate by the microstructure on the bottom surface, thereby increasing the overall brightness and evenness, improving theeffect on overall evenness and the light guide efficiency of a light-emitting diode, and reducing the production cost of products.

Description

technical field [0001] The invention relates to backlight source technology, in particular to a light guide plate capable of improving the overall brightness and uniformity of the light guide plate, a backlight source and a liquid crystal display device. Background technique [0002] With the rapid development of liquid crystal display technology, the application of light emitting diode (light emitting diode, referred to as LED) backlight has gradually expanded from telephones, game consoles and mobile phones to portable products, audio and video players, and even larger TVs and monitors. Among them, the demand for ultra-thin LED backlight is increasing, its development is also faster, and its application is more common. [0003] The light guide plate is an important component of the LED backlight. It is generally made by injection molding. The material is mostly polymethyl methacrylate (PMMA for short) and polycarbon fiber (PC for short). [0004] In the prior art, light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357
Inventor 万丽芳王庆江赵星星张凯亮张丽蕾王刚邵喜斌
Owner BOE TECH GRP CO LTD
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