Backlight module and LCD using the same

Abstract

The invention discloses a backlight module and a liquid crystal display using the backlight module. The backlight module at least comprises a backboard, a light guide board and a light source; wherein, the backboard is provided with at least one concave part stretching across the backboard and comprises a first marginal zone and a second marginal zone respectively at the two sides of the concave part; the light guide board is arranged above the backboard and the bottom surface of the light guide board is provided with a first side zone, a second side zone and a central zone positioned betweenthe first side zone and the second side zone, the first side zone and the second side zone are respectively pressed against the first marginal zone and the second marginal zone of the backboard, and the central zone is suspended over the backboard; and the light source is arranged at one side of the light guide board and is close to the first side zone of the bottom surface. The invention can prevent the surface structure of the light guide board from being pressed and damaged due to compressed backboard.

Description

technical field [0001] The invention relates to a flat display, and in particular to a backlight module and a liquid crystal display (LCD) using the same. Background technique [0002] Since the liquid crystal display itself cannot emit light, it is necessary to provide a sufficient and uniform light source for the liquid crystal display panel through the backlight module, so that the liquid crystal display panel can display images. Because of this, the backlight module is a very critical component in the liquid crystal display. Backlight modules can be divided into direct-lit backlight modules and side-lit backlight modules according to the position of the light source. In order to achieve lightness and thinness for easy portability, the displays of portable devices such as notebook computers mostly use side-illuminated backlight modules. [0003] Please refer to figure 1 , which shows a schematic cross-sectional view of the structure of a conventional backlight module. ...

AI Technical Summary

Problems solved by technology

[0006] However, the light guide plate with V-Cut structure will face some problems in application

The common problem is mainly that the notebook computer using the light guide plate of the V-Cut structure, when performing vibration and impact tests, such as when applying back pressure to the back plate of the backlight module, the pressed back plate will further compress As a result, the V-Cut structure on the surface of the light guide plate is easily damaged due to pressure, so it is very easy to cause white spots (White Spot) on the display screen, seriously affecting the display quality of the liquid crystal display device, and causing Product reliability drops

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