Side-light type backlight module and liquid crystal display device

Abstract

An edge-lit backlight module and a liquid crystal display device. The edge-lit backlight module comprises a light guide panel (1) and a positioning component (2) for positioning the light guide panel. The light guide panel (1) is rigidly positioned in a direction facing a light source, and is buffer-positioned in all the other directions. The edge-lit backlight module and the liquid crystal display device in the present invention use a new light guide panel positioning structure. Because the light guide panel (1) is rigidly positioned in the direction facing the light source, the light coupling distance between the light guide panel (1) and the edge-lit backlight module can be controlled to obtain a better light guide effect. The light guide panel is buffer positioned in all the other directions to absorb the expansion or contraction amount of the light guide panel (1), so that warpage or deformation of the light guide panel (1) can be avoided, and at the same time, the phenomenon that the light guide panel (1) is fractured when impacted because the light guide panel (1) is in rigid contact with the positioning structure can also be avoided.

Description

technical field [0001] The invention belongs to the field of liquid crystal display, and more specifically relates to a side-light type backlight module and a liquid crystal display device. Background technique [0002] The current mass-produced edge-lit backlight modules need to use a light guide panel (Light Guide Panel). Since the light coupling distance between the light source of the backlight module and the light guide panel is relatively accurate, the installation of the light guide panel tends to be rigid. The positioning column or the right-angle positioning edge, however, the light source of the backlight module will emit heat when it is working, which will heat up the light guide plate and heat up. Since the positioning column and the right-angle positioning edge are made of rigid materials and have no cushioning properties, it may cause The following problems: first, the expansion and contraction of the light guide plate cannot be fully absorbed, which may easily...

AI Technical Summary

Problems solved by technology

[0002] The current mass-produced edge-lit backlight modules need to use a light guide panel (Light Guide Panel). Since the light coupling distance between the light source of the backlight module and the light guide panel is relatively accurate, the installation of the light guide panel tends to be rigid. The positioning column or the right-angle positioning edge, however, the light source of the backlight module will emit heat when it is working, which will heat up the light guide plate and heat up. Since the positioning column and the right-angle positioning edge are made of rigid materials and have no cushioning properties, it may cause The following problems: First, the expansion and contraction of the light guide plate cannot be fully absorbed, which may easily cause warping and deformation of the light guide plate; second, the light guide plate is in rigid contact with the positioning structure, and it is easy to cause the light guide plate to break when it is hit

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