Backlight source and liquid crystal display (LCD)

Abstract

The invention discloses a backlight source and a liquid crystal display (LCD) and relates to the field of manufacture of LCDs, and the backlight source and the LCD are used for achieving the aim of improving the backlight uniformity. The backlight source comprises a light source, light guide plates and diffusion sheets, wherein the light guide plates comprise at least two light guide plate units, the shapes of the diffusion sheets are of linear bulges at positions corresponding to joint seams between every two adjacent light guide plate units, and the directions of the linear bulges are consistent with that of emergent light of the light guide plates. The scheme disclosed by the invention is applicable to the production and manufacture of the backlight source and the LCD.

Description

technical field [0001] The invention relates to the field of liquid crystal display manufacture, in particular to a backlight source and a liquid crystal display. Background technique [0002] In the process of realizing high-quality picture display of liquid crystal displays, the design of the backlight source is particularly important. The backlight source includes: a light source (point light source or line light source, etc.), a light guide plate, and a diffuser. Wherein, the light emitted by the light source enters the light guide plate, and forms a relatively uniform surface light source under the action of the light guide plate; the diffusion sheet can make the light transmitted from the light guide plate more uniform. The backlight emits the adjusted relatively uniform backlight into the display screen to achieve the purpose of display. At present, in order to realize local dimming, the light guide plate is usually divided into several light guide plate units, so t...

AI Technical Summary

Problems solved by technology

[0003] However, this light guide plate applied to local dimming, such as figure 1 As shown, there will be seams 10 between every two adjacent light guide plate units, resulting in irregular light paths, although the diffusion sheet in the prior art can reduce the brightness of the display screen caused by irregular light paths to a certain extent. Even, but due to the limited effect of the diffuser, the uneven brightness and darkness of the display is still serious, which affects the performance of the entire liquid crystal display

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