Novel light guide plate, preparation method of diffusion layer of light guide plate and backlight module

Abstract

The invention provides a novel light guide plate, a preparation method of a diffusion layer of the light guide plate and a backlight module. A light guide plate of the backlight module comprises a light guide plate base layer, the bottom surface of the light guide plate base layer is provided with a reflecting layer, and the top surface of the light guide plate base layer is provided with a light-emitting surface which is provided with a diffusion layer; organic glass powder is attached to the light guide plate base layer to form the diffusion layer. After raw materials for preparing the light guide plate base layer are melted and leveled / leveled, organic glass powder is uniformly sprayed on the top surface of the light guide plate base layer by adopting a spraying mechanism and mold pressing is performed, vibration and demolding are performed after the raw materials of the light guide plate base layer are completely cured, and the diffusion layer attached to the light guide plate base layer is obtained after the abundant organic glass powder is removed. The light emitting uniformity and the light transmittance of the light guide plate are improved, the technical problem that cylindrical burrs are easily formed around holes in the surface (diffusion layer) of the light guide plate in the laser dotting process is solved, and the precision requirement for the surface of a mold, the mold cost and the machining difficulty of the diffusion layer of the light guide plate are greatly reduced.

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