Optical diaphragm, light guide plate, combination method thereof and backlight module

Abstract

The invention discloses an optical diaphragm, a light guide plate, a combination method of the optical diaphragm and the light guide plate, and a backlight module provided with the optical diaphragm and the light guide plate, and relates to the field of display, aiming at solving the displacement or the wrinkle of the diaphragm caused by the overlarge size of the diaphragm, the bad assembly, the heating deformation and the vibration, effectively reducing the probability of the bad screen display quality, and improving the display effect. Some parts or all parts of at least one of surfaces of the optical diaphragm are provided with magnetic diaphragm layers; and the magnetic diaphragm layers have the magnetism, and are made from transparent magnetic materials. The surface of the light guide plate is further provided with the magnetic diaphragm layer. The combination method of the optical diaphragm and the light guide plate in the backlight module comprises the following steps of: respectively arranging the magnetic diaphragm layers on the light guide plate and the optical diaphragm; and gluing each optical diaphragm with each light guide plate due to the magnetic attraction of the magnetic diaphragm layers.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical film used in a backlight module, a light guide plate and a combination method thereof, and a backlight module provided with the optical film and the light guide plate. Background technique [0002] The backlight module is one of the key components of the liquid crystal display device. Since the liquid crystal itself does not emit light, the main function of the backlight module is to provide a uniform and high-brightness illuminant for the liquid crystal panel. The illuminant is converted into a surface luminous product with high brightness and uniform luminance through an effective light mechanism, so that the liquid crystal panel can display images normally. In addition to being used in LCD TVs and liquid crystal display devices, backlight modules can also be used in display devices that require backlights such as digital photo frames, electronic paper, and mobile p...

AI Technical Summary

Problems solved by technology

[0003] The backlight module generally includes: a light guide plate, a diffusion sheet, a prism sheet and other optical films (referred to as the film), the gap between the films (that is, between the light guide plate and the optical film, and between the optical films) The unevenness of the gap) will lead to poor picture display quality, and the larger the size of the TV, the more difficult it is to control the gap between the diaphragms. At present, the combination of the light guide plate and the diaphragm is still mechanically fixed. Too large, poor assembly, heat, vibration, easy to cause displacement or wrinkles between the diaphragms, resulting in poor picture quality and affecting the display effect of the display device

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