Backlight module, back plate and liquid crystal display device

Abstract

The invention discloses a backlight module, a back plate and a liquid crystal display device. The backlight module comprises the back plate, a PCB (printed circuit board) and a locking accessory used for fixing the PCB onto the back plate, a chute is arranged on the surface of the back plate, and the locking accessory is mounted on the chute by the aid of a fixing structure arranged at the bottom of the locking accessory. A convex closure can be mounted on the chute disposed on the surface of the back plate and can be fixed to an optional position on the chute, accordingly, the chute can be disposed at the optional position on the chute according to the size of the PCB, the back plate can match with PCBs with different sizes, and universality of the back plate is improved. In addition, a corresponding amount of convex closures can be arranged according to needs of different quantities of components, the back plate is higher in universality, and production cost and processing cost of the back plate are reduced.

Description

technical field [0001] The invention relates to the field of liquid crystal display, and more specifically relates to a backlight module, a back plate and a liquid crystal display device. Background technique [0002] The backlight module is the light source providing device in the liquid crystal display device, which includes: backplane, light guide plate, optical film, LED light bar and other components; among them, most of the components are locked and fixed on the backplane, such as PCB Attached to the back panel by a cam lock. [0003] The convex hull is a structure set on the backplane to fix components such as the PCB board. The convex hull generally protrudes from the surface of the backplane. The PCB board is fixed on the convex hull by screws or other locking accessories, thereby preventing the PCB from coming into contact with the backplane. Direct contact of the board surface causes a short circuit. like figure 1 As shown in the existing backplane, the convex ...

AI Technical Summary

Problems solved by technology

like figure 1 As shown in the existing backplane, the convex hull 80 on the backplane is integrally stamped and formed on the backplane when the backplane is manufactured, so that the position of the convex hull 80 on the backplane is fixed, and it is difficult to adapt to PCBs of different sizes At the same time, for PCBs of different sizes and backlight modules with different component quantity requirements, it is necessary to re-open the mold to make the corresponding backplane. For PCB boards of different sizes, it is necessary to open the mold to make a new backplane, so its versatility is not Well, and the cost of production will be higher in this case

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