Backlight module and liquid crystal display device

Abstract

The invention discloses a backlight module which comprises a back plate, a light guide plate and a middle frame, wherein the light guide plate and the middle frame are arranged on the back plate. A plurality of cushion blocks are assembled on the back plate, one side of each cushion block is connected with the side wall of the back plate, the opposite other side of each cushion block is connected with the light guide plate in an abutted manner, a clamping groove is formed in each cushion block, a fastening groove corresponding to each cushion block is formed in the side wall of the back plate and communicated with the clamping groove, the middle frame comprises a longitudinal support, the longitudinal support comprises a plurality of crossing bolts, each crossing bolt corresponds to one clamping groove, a fastening hook is arranged on the side wall of each crossing bolt, the middle frame is assembled in the clamping grooves, and the fastening hooks and the fastening grooves are mutually fastened. The invention further discloses a liquid crystal display device comprising the backlight module. By improving the fixed matching structure of the back plate and the middle frame, the border width of a liquid crystal display module is effectively decreased, and design of the liquid crystal display device with a narrow frame structure is facilitated.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, in particular to a backlight module and a liquid crystal display device including the backlight module. Background technique [0002] Liquid crystal display (LCD) has the advantages of thin body, low power consumption, and no radiation, and has been widely used, such as mobile phones, digital cameras, computers, TV screens, and the like. Most of the liquid crystal displays on the market are backlight liquid crystal displays, including a liquid crystal panel and a backlight module. The liquid crystal panel and the backlight module are arranged opposite to each other. In the increasingly competitive display market, differentiated design has become one of the important research directions for manufacturers to improve their product selling points. Among existing products, thin or narrow frame designs are common, and this design can obtain a more beautiful appearance. to attract consu...

AI Technical Summary

Problems solved by technology

In the backlight module with this structure, since the longitudinal support structure of the middle frame 5 includes an inner wall 6 and an outer wall 7, the existence of the outer wall 7 increases the frame width of the liquid crystal display module, which is not conducive to the design of a narrow frame structure

Moreover, in this structure, the middle frame 5 can limit the position of the light guide plate 3 in the longitudinal direction, but the limit of the light guide plate 3 in the transverse direction still needs another limit structure, which increases the complexity of the structure of the backlight module.

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