Light guide board and back light module unit using the same

Abstract

A light guide plate and a backlight module using the light guide plate belong to the liquid crystal display (LCD) field, and aims to effectively solve the problem that uniform luminous brightness is not easy to obtain when a LED is used as a backlight source. The invention discloses a light guide plate which comprises a light inlet surface, a light outlet surface opposite to the light inlet surface and a side face connecting the light inlet surface and the light outlet surface, wherein, each of the light inlet surface and the light outlet surface has a groove structure; each groove structure is formed after a rotary body is cut out from the light guide plate; the groove structure of the light inlet surface is called a first groove, while the groove structure of the light outlet surface is called a second groove; the rotary shafts of the first groove and the second groove pass through the centers of the light inlet surface and the light outlet surface of the light guide plate. The invention also discloses a backlight module using the light guide plate. The light outlet surface of the light guide plate has uniform luminous brightness; moreover, the backlight module, which adopts a plurality of combined light guide plates, not only can be used as a small-sized LCD device, but also can be used in a large-sized LCD device.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module using the light guide plate, belonging to the field of liquid crystal display. Background technique [0002] With the advent of the information age, the development of liquid crystal display (LCD) has advanced by leaps and bounds, and it is in a dominant position in the field of flat panel display. Liquid crystal display devices have the advantages of thinness, power saving, and low radiation. As the size of liquid crystal panels becomes larger and the product specifications become better and better, the market scope continues to expand. The backlight module is an important part of the liquid crystal display system, and its performance directly determines the main indicators such as brightness, color, and power consumption of the liquid crystal display. In recent years, the function and appearance requirements of liquid crystal display devices are getting higher and higher, and the pe...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a new light guide plate structure and a backlight module using the light guide plate, effectively solving the problem that it is difficult to obtain uniform luminous brightness when using LEDs as a backlight source

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