Light conducting board and back light module

Abstract

The present invention relates to a light-conducting plate, including a light-incoming plane, a light-outcoming plane adjacent to said light-incoming plane and a background plane opposite to said light-outcoming plane. On said light-outcoming plane the concentric channels whose spacing distances are changed are set.

Description

【Technical field】 [0001] The invention relates to a light guide plate and a backlight module using the light guide plate. 【Background technique】 [0002] Liquid crystal display devices are mainly used in various information, communication, and consumer products, such as personal computers, LCD TVs, mobile phones, video phones, and PDAs. Because the liquid crystal display panel itself cannot emit light, it needs a backlight module to provide it with uniform plane light, so as to obtain a good visual effect. [0003] see figure 1 , is a prior art backlight module disclosed in US Patent No. 5,548,670 published on August 20, 1996. The backlight module 1 includes light sources 101 and 102 arranged parallel to each other, a light guide plate 12 arranged between the light sources 101 and 102, a reflector 13 arranged below the light guide plate 12, and a prism located above the light guide plate 12. slice 14. In the backlight module 1 , since the light guide plate 12 does not ha...

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Problems solved by technology

[0004] In order to overcome the disadvantages of high cost and low light utilization rate of the prior art light guide plate, the present invention provides a light guide plate with low cost and high light utilization rate

[0005] In order to overcome the shortcomings of high cost and low light utilization rate of the prior art backlight module, the present invention provides a backlight module with low cost and high light utilization rate

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