Method and apparatus for controlling liquid crystal display brightness, and liquid crystal display device
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United States of America Patent
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Sep 22, 2020
Grant Date -
Apr 11, 2019
app pub date -
Dec 4, 2018
filing date -
Oct 16, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
This disclosure provides a method, and a liquid crystal display device, where the method includes: determining grayscale values of pixels in a zone image data block under a predetermined rule according to a received image signal; pre-obtaining a zone backlight value corresponding to the zone image data block according to the grayscale values; calculating an adjusted backlight value of a backlight zone corresponding to the zone image data block, based on the zone backlight value, a backlight value gain variable, and an ambient luminance revision variable; outputting the adjusted backlight value to a driver circuit of a backlight source in the backlight zone; and driving the backlight source according to the adjusted backlight value to control brightness of the backlight source in the backlight zone.
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