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Liquid crystal display, backlight module and its assembly method and process

2020-02-18

The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display, a backlight module and an assembly method thereof.


Background technology:

With the development of liquid crystal display technology, graphic display device has been widely used in various fields, especially in liquid crystal display device, because of its lightweight, save electricity and save space, and other advantages replace the traditional CRT display device, but as a kind of passive displays, liquid crystal display (LCD) need the light through the liquid crystal layer, the human eye can be observed that the liquid crystal layer image character information, therefore, need a backlight module to provide light for liquid crystal display device.Existing backlight modules generally include light guide plate, plastic frame, reflector, optical diaphragm group, light source and back plate.


Technical realization elements:

In order to solve the deficiency of existing technology, the invention provides a liquid crystal display, a backlight module and an assembly method. The backlight module has a simple structure and can reduce the weight and the time required for assembly.

This invention put forward the specific technical solution is: to provide a backlight module and a backlight module including the back, the guide plate and light source, optical diaphragm group, described the back including backplane, described in the guide plate, optical film set from the bottom up, in turn, described in floor, light source, including multiple leds, multiple LED lights on the backplane described described described and compared with guide plate into the smooth relative Settings, described in the floor toward the side of guide plate is coated with reflective materials.

Further, the back plate also includes a side plate that is bent upward and extended from the bottom plate, and the side of the side away from the light inlet surface of the light guide plate is open-shaped.

Further, the back plate also comprises a roof plate bent and extended from the side plate toward the optical diaphragm group, which extends to the edge of the optical diaphragm group and adheres to the upper surface of the optical diaphragm group.

Further, one side of the side plate and the roof facing the light guide plate is coated with a shading material.

Further, the backlight module also comprises an adhesive strip arranged on the bottom plate, and the adhesive strip and the light source are located on opposite sides of the light guide plate.

Further, the rubber strip comprises a vertical portion perpendicular to the bottom plate and a horizontal portion bent and extended by the vertical portion toward the optical diaphragm group, which extends to the edge of the optical diaphragm group and adheres to the upper surface of the optical diaphragm group.

Further, the side plate is provided with a fixed hole, and the vertical part is provided with a convex block corresponding to the fixed hole. The rubber strip and the side plate are fixed through the convex block and the fixed hole.

Further, a plurality of baffles are arranged on the light inlet surface of the light guide plate, and the plurality of baffles are enclosed with the side plate to form a plurality of placement slots. The plurality of LED lights are accommodated in the plurality of placement slots one by one.

The invention also provides an assembly method for a backlight module as described above, which includes:

The light source and the optical diaphragm group are attached to the light guide plate respectively to form a first assembly;

The first component is inserted into the backplane from an open-shaped side of the backplane to form the backlight module.

The invention also provides a liquid crystal display comprising a display module and a backlight module as described above, which is located above the optical diaphragm group.

The backlight module of the invention comprises a back plate, a light guide plate, an optical diaphragm group and a light source.The backlight module in the invention replaces the reflector in the traditional backlight module by coating the surface of the bottom plate with reflective material, thus simplifying the structure, reducing the weight and shortening the assembly time.

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