Liquid crystal display brightness control method, device and liquid crystal display device
A technology for liquid crystal display and brightness control, which is applied in the fields of devices, liquid crystal display equipment, and liquid crystal display brightness control methods, can solve the problems of insufficient picture layering performance, affecting the picture display effect, etc., so as to enhance the picture display quality and improve the picture layering. Effect
Active Publication Date: 2019-09-17
HISENSE VISUAL TECH CO LTD
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However, in the above method, although the contrast between light and dark of the screen is enhanced, when the low-brightness screen is displayed, the layering of the screen is usually insufficient, which affects the display effect of the screen.
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[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0044] figure 1 It is a schematic diagram of a partial structure of a liquid crystal display device according to an embodiment of the present invention. In this paper, through the liquid crystal display brightness control device, different backlight adjustment rules are used for image signals with different gray scale value distribution forms, an...
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Embodiments of the present application provide a method and apparatus for controlling liquid crystal display brightness, and a liquid crystal display device. The method for controlling liquid crystal display brightness according to the present application determines a backlight adjustment rule according to a grayscale value distribution of an image signal and a first preset rule, adjusts a zoned backlight value corresponding to a zoned image data block according to the backlight adjustment rule, as well as drives and controls the backlight source brightness of the corresponding backlight zone by using the adjusted zoned backlight value, thereby adjusting the zoned backlight values for image signals of different grayscale value distributions by using different backlight adjustment rules, significantly improving the picture hierarchy of different image signals, and enhancing the displaying quality of the picture.
Description
technical field [0001] Embodiments of the present invention relate to liquid crystal display technology, in particular to a method and device for controlling brightness of a liquid crystal display, and a liquid crystal display device. Background technique [0002] A Liquid Crystal Display (LCD for short) usually uses a dynamic backlight modulation technology to control the brightness of the backlight, which can achieve image quality effects such as energy saving and improved picture contrast. Among them, the dynamic backlight modulation technology mainly includes multi-region dynamic backlight modulation and global backlight modulation. [0003] The multi-zone dynamic backlight modulation specifically divides the backlight module of the liquid crystal display into multiple backlight zones, and each backlight zone is provided with a backlight source, and the brightness of the backlight source in each backlight zone can be individually driven and controlled. In the multi-part...
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IPC IPC(8): G09G3/34G09G3/36
Inventor 张玉欣
Owner HISENSE VISUAL TECH CO LTD