Display device and backlight module thereof

Abstract

A display device includes a display panel and a backlight module disposed under the display panel. The display panel has a display area and a light shielding layer surrounding the display area. The backlight module includes a plurality of light sources, a reflective sheet corresponding to the plurality of light sources, an optical control film disposed above the plurality of light sources and thereflective sheet, a diffusion material layer interposed between the reflective sheet and the optical control film, and a diffusion plate disposed one side opposite to the diffusion material layer of the optical control film, wherein the optical control film has a plurality of light-emitting structures and is interposed between the diffusion plate and the diffusion material layer, and the diffusionmaterial layer has a transmittance of 65% to 85 %.

Description

Technical field [0001] The present invention generally relates to a display device and its backlight module. Specifically, the present invention relates to a display device and its backlight module with a thin design to reduce the possibility of deformation of the optical control film. Background technique [0002] As consumers’ preferences and demands increase, the thinning of display devices has become an inevitable trend, and the backlight module is one of the main thickness reduction targets when the display device is thinned. Because the backlight module requires light mixing space, it usually maintains an air gap greater than 1mm above and below the optical film. Poor heat dissipation or other reasons will cause the optical film to be partially deformed and bent, resulting in inconsistent display optical tastes. When the backlight module is thinned, the influence of local deformation and bending of the optical film is aggravated, which also severely limits the possibility o...

AI Technical Summary

Problems solved by technology

The backlight module usually maintains an air gap greater than 1mm above and below the optical film because of the need for light mixing space. When the heat dissipation is not good or other reasons, the optical film will be partially deformed and bent (waving), resulting in inconsistent display optical quality However, when the backlight module is thinned, the influence of local deformation and bending of the optical film is aggravated, which also seriously limits the possibility of thinning the backlight module.

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