Backlight brightness adjusting method and device, electronic equipment and double-layer liquid crystal display screen

Abstract

The invention discloses a backlight brightness adjusting method and device, electronic equipment and a double-layer liquid crystal display screen, and belongs to the field of liquid crystal backlight control. Acquiring first data according to the original image; segmenting the original image according to the first data to obtain a second backlight signal and a second shading signal; the second shading signal is used for controlling the opening and closing state of the middle-layer liquid crystal panel; and controlling the light emitting state of the mini LED backlight panel by using the second backlight signal. According to the method, the image is segmented according to the original image, so that the mini LED backlight panel works at proper brightness, energy consumption and light leakage can be reduced, redundant light is shielded in combination with the middle-layer liquid crystal panel, the problems of light leakage and display halo of LED backlight display are effectively solved, the problem that liquid crystal is not closed completely is solved, and the display quality is improved. Halo between a black background and a display part in a display process is reduced, so that the difference between light and darkness of a picture is more obvious, and the impression is improved.

Description

technical field [0001] The invention relates to a backlight brightness adjustment method, device, electronic equipment and double-layer liquid crystal display, belonging to the field of liquid crystal backlight control. Background technique [0002] The backlight methods of liquid crystal displays are divided into direct-type backlight and side-type backlight. The side-type backlight cannot be controlled locally and needs to be turned on globally. The actual power consumption is relatively large, and the brightness provided by the side-type backlight is limited. The direct-type backlight can overcome these problems. question. Mini LED backlight technology is a transitional technology from LCD to LED display. The direct-lit backlight panels in the prior art are mainly white Mini LED arrays, such as figure 1 As shown, it includes an LED backlight array 910, a liquid crystal layer 920, and a color filter layer 930 from bottom to top, wherein the LED backlight array 910 consist...

AI Technical Summary

Problems solved by technology

When this kind of screen is working, the backlight is always on, and the function of the middle liquid crystal is to adjust the brightness. In this way, as long as the resolution of the middle liquid crystal is large enough, it is equivalent to having many very small backlight partitions. In fact, the middle liquid crystal cannot completely block light. This solution can reduce light leakage to a certain extent, but the darkest part of the display screen is not as deep as the darkest part of the display screen with Mini LED backlight technology, and the light and dark levels are not clear enough

Images