A kind of liquid crystal screen backlight control device, liquid crystal television and mcu chip

Abstract

The invention discloses a liquid crystal screen backlight control device, a liquid crystal TV and an MCU chip. The main contents include: an FRC chip, an MCU chip connected to the FRC chip, and a backlight drive chip connected to the MCU chip; by calculating N image partitions of the current image frame The brightness data of the N image partitions are converted into the backlight values ​​of the N backlight partitions and sent to the microcontroller MCU chip; the N backlight partitions are divided into M backlight areas, and according to the content of each backlight area The average value of the backlight values ​​of the backlight partitions, and the preset gain curve, find the corresponding gain value of each backlight region, and adjust the backlight values ​​of the N backlight partitions with the found M gain values; thus, it can be aimed at Search for different gain values ​​in different backlight areas, realize different degrees of dimming control in different areas of backlight partitions, and improve the contrast between light and dark during the display process of video data and the layering of the display screen.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal screen backlight control device, a liquid crystal television and an MCU chip. Background technique [0002] 4K resolution is 4096×2160 pixel resolution, which is 4 times the resolution of 2K projectors and high-definition TVs, and belongs to ultra-high-definition resolution. 4K TV is a TV with 4K resolution. As a new generation of TV products, 4K TV uses a new generation of high-definition 4K technology and a super large screen to clearly and completely show every detail and close-up of the display screen to users. [0003] 4K LCD TVs in 4K TVs usually use Frame Rate Conversion (FRC) technology to achieve resolution and frame rate conversion. However, because the FRC chip is a video-specific processing chip, its function is relatively simple. Moreover, because the diversity of backlight models determines the diversity of LED drive circuits, if FRC...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a liquid crystal screen backlight control device and a liquid crystal television, which are used to solve the problems existing in the prior art that cannot improve the light and dark contrast of the backlight partition and the layering of the picture.

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