Backlight module, liquid crystal module and display device

Abstract

The invention provides a backlight module, a liquid crystal module and a display device. The backlight module comprises a back plate, a middle frame, a lamp panel and an optical film material; the back plate and the optical film material are connected to the two sides of the middle frame respectively, a lamp cavity is defined by the back plate, the middle frame and the optical film material, the lamp plate is located in the lamp cavity, the middle frame comprises an upper frame and a lower frame which are oppositely arranged, the upper frame and the lower frame are of a hollow structure, and at least one fan is arranged in the upper frame; the hollow structure comprises an outer wall, a first inner wall and a second inner wall, ventilation grids are arranged on the outer wall, the first inner wall and the second inner wall extend oppositely, arcs with opposite bending directions are arranged at the ends of the first inner wall and the second inner wall, a ventilation opening is formed between the first inner wall and the second inner wall, and projections of the ends of the first inner wall and the second inner wall on the outer wall at least partially coincide. The invention provides a backlight module, a liquid crystal module and a display device. The heat dissipation requirement of the high-power backlight module can be met.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module, a liquid crystal module and a display device. Background technique [0002] The backlight module is an important part of the display device. The working principle of the backlight module is to convert the point light source or line light source into a surface light source with uniform brightness through an optical film, and provide it to the non-self-emitting liquid crystal panel to realize image display. [0003] The backlight module can include optical components and structural components, wherein the optical components include backlight, light guide plate, diffusion plate, reflection sheet, diffusion sheet, etc., and the structural components include frames, backplanes and other structures. In the prior art, the backlight module is a sealed cavity, and the lamp board in the cavity is the main heating component, and the sealed cavity only reli...

AI Technical Summary

Problems solved by technology

[0004] For high-brightness and high-power backlight modules, only the backplane is used for heat dissipation, and the heat cannot be exported from the sealed cavity in time, which will cause the temperature in the cavity of the backlight module to be too high. High temperature may cause thermal deformation of optical components. And the LCD panel exceeds the maximum operating temperature, resulting in damage to the display device

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