Middle frame of liquid crystal display device and liquid crystal display device

Abstract

The invention discloses a middle frame of a liquid crystal display device and the liquid crystal display device. The middle frame of the liquid crystal display device comprises a connecting portion and a buffer portion, wherein the connecting portion corresponds to an incidence side of the liquid crystal display device, and the buffer portion is fixedly connected with the connecting portion and corresponds to a non-incidence side of the liquid crystal display device. The connecting portion is made of a hard material, and the buffer portion is made of a soft material. The middle frame of the liquid crystal display device can be directly used for clamping a light guide plate and achieving positioning of the light guide plate. Besides, the connecting portion is made of a plastic material which has a certain hardness, the flatness of the whole middle frame can be maintained, the connecting portion corresponds to the position of a light source, and the plastic material has a certain high temperature resistance capability. An existing middle frame is ordinarily formed by plastic injection, the manufacturing cycle of a plastic injection die is long, and the cost of the plastic injection die is high. The connecting portion and the buffer portion can respectively undergo die sinking, a die structure is simplified, and the middle frame is favorable for cost reduction.

Description

technical field [0001] The invention relates to the field of liquid crystal display devices, and more specifically, to a middle frame of a liquid crystal display device and the liquid crystal display device. Background technique [0002] figure 1 It is an existing liquid crystal display device, which includes a panel 300 and a backlight module, and the panel 300 and the backlight module are fixed through the front frame 100 . The backlight module includes a frame body composed of a middle frame 200 and a backplane 700 , the backplane 700 supports a light guide plate 500 , and the light emitting surface of the light guide plate 500 is covered with an optical film 400 . There is a folded edge 710 around the back plate 700 , a light bar 600 is provided at the position corresponding to the folded edge 710 on the light incident surface of the light guide plate 500 , and a thermally conductive tape 610 is set between the light bar 600 and the folded edge 710 of the back plate 700...

AI Technical Summary

Problems solved by technology

The light guide plate 500 is mainly fixed by the rivet post 800 riveted on the back cover. In this way of fixing, the light guide plate 500 needs to be cut and processed to form a fixing groove to accommodate the rivet post 800 , resulting in processing costs; and due to the existence of the rivet post 800 , there are likely to be bright spots on the corresponding places on the screen, resulting in optical quality problems, especially in narrow bezel models, and it is difficult to solve; in addition, during the reliability test, the light guide plate 500 The place where the rivet column is 800 is prone to breakage

Images