Liquid crystal display device and backlight module thereof

Abstract

The invention relates to a liquid crystal display device and a backlight module thereof. The backlight module comprises a light guide panel, a light emitting module and a plurality of elastic elements, wherein the light emitting module comprises a plurality of light emitting diodes; the light emitting diodes emit light towards a light incident surface on the lateral side of the light guide panel; and both ends of each elastic element are respectively connected with the light guide panel and the light emitting module, so that the light guide panel abuts against the light emitting diodes. The liquid crystal display device and the backlight module thereof in the invention can reduce the clearance between the lateral side of the light guide panel and the light source as much as possible, and even achieve zero clearance to realize ideal light emergent efficiency of the light guide panel, thereby providing sufficient illuminating rays for the display panel.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a liquid crystal display and a backlight module thereof. Background technique [0002] The Back Light Module (BLM) is a key component of a Liquid Crystal Display (LCD). The backlight module supplies a light source with sufficient brightness and uniformity to enable the Liquid Crystal Panel (LCP) to display images. The backlight module can be roughly divided into "side-light" and "direct-light" designs according to the position of the light source. The "side-light" design of the backlight module is to place the light source on the side of the light guide plate, and then use the light guide plate to control the direction of the light beam. To provide a uniform light source for the LCD panel. [0003] However, when the liquid crystal display is being tested or transported, there is often an unexpected gap between the side of the light guide plate and the light source, so that...

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Problems solved by technology

[0003] However, when the liquid crystal display is being tested or transported, there is often an unexpected gap between the side of the light guide plate and the light source, so that the light extraction efficiency of the light beam provided by the light guide plate will decrease rapidly as the gap between the two increases.

[0004] In addition, due to environmental temperature changes, when the ambient temperature rises, the light guide plate will expand, and when the temperature drops, the light guide plate will shrink. After several times of thermal expansion and contraction, the position of the light guide plate will shift, and Change the gap between the light guide plate and the light source, thereby attenuating the light extraction efficiency of the light guide plate

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