Side-light type backlight module and liquid crystal display device

Abstract

The invention belongs to the field of liquid crystal display, and particularly relates to a side-light type backlight module and a liquid crystal display device. The side-light type backlight module comprises a light guide plate and a positioning part for positioning the light guide plate, and the light guide plate is rigidly positioned in a direction facing a light source and is positioned in a cushioned manner in the rest directions. The side-light type backlight module and the liquid crystal display device use a novel light guide plate positioning structure, as the light guide plate is rigidly positioned in the direction facing the light source, the light coupling distance between the light guide plate and the light source of the side-light type backlight module can be controlled to obtain fine light guide effect, and the light guide plate is positioned in the cushioned manner in the rest directions, so that expansion and contraction of the light guide plate are absorbed to avoid warping and deformation of the light guide plate. Besides, the light guide plate can be prevented from breaking due to rigid contact of the light guide plate and the positioning structure in impact.

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 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...

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 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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