Light guide plate compressing structure and backlight module

Abstract

The invention relates to the technical field of displays, in particular to a light guide plate compressing structure and a backlight module. The light guide plate compressing structure comprises a plastic frame, a rolling component and a compressing member, a protruding portion of the plastic frame is positioned between a display screen panel and a light guide plate, the lower portion of the protruding portion is provided with a deboss matched with the rolling component, the rolling component is positioned in the deboss and compressed by the compressing member arranged in the protruding portion, and the bottom of the rolling component is extended out of the protruding portion and contacts with the light guide plate to slightly press on the light guide plate. When the light guide plate expands in a high-temperature high-pressure experiment, the bottom of the rolling component and the light guide plate are in rolling friction, and the light guide plate moves and extends horizontally and does not deform due to expanding and being limited, so that reliability risk of the light guide plate is lowered.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a pressing structure of a light guide plate and a backlight module. Background technique [0002] In the display backlight module, in order to prevent the LGP (light guide plate) from moving up and down (Z axis), the traditional large-size module generally uses a rubber frame and adds a rubber gasket 8 between the rubber frame and the light guide plate to seal the light guide plate. Slight compression, but when the structure is subjected to high-temperature and high-humidity experiments, due to the expansion of the light guide plate, sliding friction will be generated at the compression, and the resistance to LGP expansion will be too large, which will affect its reliability. [0003] Specifically, as figure 1 As shown, a traditional large-size module consists of a backplane 1, a plastic frame 2, a rubber gasket 8, and a light guide plate 4. The protruding part is located betwe...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a light guide plate compression structure and a backlight module to solve the problem that the existing light guide plate compression method has too much resistance when the light guide plate expands, and the reliability of the light guide plate is affected due to easy deformation.

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