Backlight model block

Abstract

The invention discloses a spliced side light backlight module, which is provided with a plurality of light guide plates, a plurality of luminous modules and a plurality of luminous control units. The plurality of the luminous control units independently control corresponding luminous modules respectively, and the luminous modules are arranged on the incident surface sides of the light guide plates. Each luminous module simultaneously corresponds to two adjacent light guide plates, so that each luminous control unit can control the luminous module to simultaneously provide light for the two adjacent light guide plates; and while starting the local darkening function, the backlight module can further retard the edge faultage between the light guide plates beside achieving the effects of saving electricity and increasing the contract.

Description

technical field [0001] The invention relates to a backlight module, in particular to a spliced ​​side-light backlight module in which light-emitting light sources and light guide plates are alternately arranged. Background technique [0002] The light source of the traditional edge-lit backlight module receives light from the side, and at the same time adjusts the uniformity of light on the plane of the light guide plate. However, it is quite difficult to control the uniformity of the light emitted by the backlight module when the size of such a structure is larger. Therefore, the current backlight module uses a splicing method to splice many smaller-sized light guide plates together, and provides light sources for each light guide plate through each light-emitting module, so that the luminance of each block of the large-sized edge-lit backlight module can be increased. And the light uniformity reaches a certain level or above. [0003] However, compared with a single larg...

AI Technical Summary

Problems solved by technology

Please refer to figure 1 , which is a spliced ​​backlight module using light-emitting diodes as the light source in the prior art. When the partial dimming function is turned on, the partial display effect of the display panel 10 is shown. When the partial dimming is applied to the edge-lit backlight module, due to Due to the one-to-one configuration of the light guide plate and the light source, local darkening will cause the boundary between the light source off block 12 and the light source on block 11 to be more obvious in the display screen, thus affecting the display quality of the display

In comparison, although the direct-lit backlight module has a better performance in local dimming, its thickness is thicker than that of the edge-lit backlight module, and it is less competitive in thinner products. Therefore, it is necessary to develop a more Edge-lit backlight module with best local dimming performance

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