Backlight module, control method thereof and display device

Abstract

The invention discloses a backlight module, a control method thereof and a display device. The backlight module comprises a backlight source composed of a plurality of light emitting devices arranged in a matrix mode. The backlight source comprises a plurality of light emitting regions. A display panel comprises a plurality of display regions. The display regions correspond to the light emitting regions one to one; the backlight module further comprises a backlight control module; when the backlight control module is scanned at the display regions of the display panel, light emitting devices inside the light emitting regions corresponding to the display regions are controlled to emit light. By dividing the backlight source, time-sharing driving is performed, in other words, when the regions, corresponding to the light emitting regions, of the display panel are scanned, the light emitting devices inside the light emitting regions are controlled to emit light, and the light emitting regions corresponding to the regions, not scanned, in the display panel do not emit light, so that the light emitting time of each light emitting device in the backlight source is greatly shortened, a large amount of electric energy is saved, and due to time-sharing driving of the light emitting regions, crosstalk between the left and right eyes can be reduced during 3D scanning.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, its control method and a display device. Background technique [0002] Liquid crystal display panel (LCD, Liquid Crystal Display) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen etc. The structure of the liquid crystal display panel is mainly composed of a thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate), an opposite substrate, a common electrode layer located on the opposite substrate side, and a liquid crystal layer (Liquid Crystal) disposed between the two substrates. Layer), wherein the array substrate is provided with pixel electrodes, data lines and gate lines, and its working principle is to control the rotation of liquid crystal molecules in th...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the driving mode of the backlight module is a driving mode in which the entire backlight is turned on and off at the same time, and in the process of image display, the backlight is always on, and the power consumption in this mode is relatively large , which is not conducive to energy saving, especially for large-size LCD image display systems. In order to meet the display requirements, a large-size backlight module needs to be equipped, resulting in greater power consumption

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