Backlight module and liquid crystal display device

Abstract

The embodiment of the invention provides a backlight module. The backlight module comprises a light source and a dye liquid crystal panel, and the light source is used for providing light for the dye liquid crystal panel; the dye liquid crystal panel comprises a dye liquid crystal layer, the dye liquid crystal layer comprises a plurality of dye liquid crystal units, each dye liquid crystal unit comprises a plurality of liquid crystal molecules and a plurality of dye molecules, and when the dye liquid crystal units are in a first state, incident light rays can pass through the dye liquid crystal units; and when in the second state, the control module regulates and controls light rays entering the control module. The backlight module provided by the embodiment of the invention is applied to the liquid crystal display device, and the backlight module can control the brightness of each sub-pixel unit in the liquid crystal display panel by controlling the state of each dye liquid crystal unit in the dye liquid crystal panel, so that the pixel-level backlight partition regulation and control are realized, and contrast of the liquid crystal display device is improved. The embodiment of the invention further provides a liquid crystal display device comprising the backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a liquid crystal display device. Background technique [0002] The contrast ratio of the display device is very critical to the effect of the display effect. Generally speaking, the higher the contrast ratio, the clearer and eye-catching the image displayed by the display device, and the brighter and brighter the color. For a liquid crystal display device, in order to improve the contrast of the liquid crystal display device, a partitioned backlight module based on a plurality of mini light-emitting diodes is usually used as the backlight module of the liquid crystal display device, through which the partition control of the backlight can be realized, Therefore, the contrast ratio of the liquid crystal display device is improved. [0003] However, due to the volume limitation of the mini LEDs, it is difficult to realize pixel-level backlight partition reg...

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to provide a backlight module and a liquid crystal display device to solve the problem of low contrast of the existing liquid crystal display devices

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