Backlight module group and liquid crystal display thereof

Abstract

The invention discloses a backlight module group and a liquid crystal display thereof. The backlight module group comprises a plurality of layers of light guide plates, a plurality of rows of LED light bars, and a controller. Every layer of the light guide plate is divided into a plurality of first backlight areas, which are provided with screen dots, and the screen dots of any two adjacent layers of the light guide plates are in a staggered arrangement. A plurality of rows of LED light bars are disposed on the side surfaces of the light guide plates, and every row of the LED light bars is disposed on the side surface of the corresponding light guide plate. Every row of the LED light bars is divided into a plurality of second backlight areas, which are opposite to the first backlight areas. The controller is used to control the light emitting of the LED light bars. The HDR effect of the lateral entrance type backlight module group is effectively improved, and a problem of conventional lateral entrance type backlight module groups of inability of realizing multi-subarea local dimming is solved; effective light isolation is realized, and the lights of the adjacent first backlight areas are prevented from mutual disturbance, and a light emitting effect is further improved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a backlight module and a liquid crystal display thereof. Background technique [0002] Currently, liquid crystal display HDR (high data rate, high-speed data transmission technology) technology has gradually become the mainstream of the market due to its advantages of higher dynamic contrast ratio and better image quality. The more partitions the LCD module has, the better the effect of local dimming, the higher the dynamic contrast, and the better the picture quality. When local dimming technology is introduced into the TV, the backlight of the TV is usually partitioned, with several lights in one area or one light in one area. The main board analyzes the brightness of each area in real time according to the brightness algorithm of the image signal, and converts the results to The form of the current value is transmitted to each area of ​​the backlight through SPI (Serial...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a backlight module and its liquid crystal display in view of the above defects of the prior art, aiming to solve the problem that the side-type backlight module in the prior art cannot realize multi-zone local dimming It not only meets the ultra-thin requirements, but also can effectively improve the HDR effect of side-lit backlight modules

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