Backlight module and liquid crystal display device

Abstract

The invention relates to a backlight module and a liquid crystal display device with the backlight module. The backlight module comprises a light guide plate and a frame containing the light guide plate. The light guide plate is arranged in the frame and comprises a light emitting plane, a bottom face and a plurality of side faces, wherein the light emitting plane is opposite to the bottom face, and the side faces are intersected with the light emitting plane and the bottom face. The size of the bottom face is larger than that of the light emitting plane, so that the bottom face connected with at least one side face protrudes out of the light emitting plane connected with the side face, and a notch is defined in one side of the light emitting plane of the light guide plate. The notch extends in the length direction of the side face and penetrates through the side face. The frame comprises at least one protrusion, and the protrusion is matched with the notch to position the light guide plate.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device using the backlight module. Background technique [0002] Since the liquid crystal in the LCD panel itself does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide a light source device for the LCD panel to realize the display function, such as a backlight module, whose function is to provide the LCD panel with sufficient brightness and uniform distribution. surface light source. [0003] Generally, a backlight module mainly includes a light source, a light guide plate and a frame. The light source is set relative to the light incident surface of the light guide plate. The light guide plate guides the transmission direction of the light beam emitted from the light source, and converts the light beam emitted by the line light source or point light source into a relatively uniform plane light to illuminate the liquid cr...

AI Technical Summary

Problems solved by technology

The light guide plate and the frame of the backlight module are usually positioned by the cooperation between the protrusions on the light guide plate and the slots on the frame. If the groove thickness is increased, the thickness of the frame will be increased, thereby increasing the thickness of the backlight module, which is not conducive to the development of thinner display devices.

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