US 12,230,226 B2
Power dissipation for full area local dimming (FALD) display
Paul Fredrick Luther Weindorf, Novi, MI (US); Brian John Hayden, Royal Oak, MI (US); and Danail Krasimirov Totev, Sofia (BG)
Assigned to Visteon Global Technologies, Inc., Van Buren Township, MI (US)
Filed by VISTEON GLOBAL TECHNOLOGIES, INC., Van Buren Township, MI (US)
Filed on Mar. 5, 2024, as Appl. No. 18/595,997.
Claims priority of provisional application 63/488,843, filed on Mar. 7, 2023.
Prior Publication US 2024/0304158 A1, Sep. 12, 2024
Int. Cl. G09G 3/34 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01)
CPC G09G 3/3426 (2013.01) [G09G 3/2007 (2013.01); G09G 3/36 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/021 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A full area local dimming (FALD) display, comprising:
a liquid crystal display (LCD);
a backlight having a plurality of light emitting diodes (LEDs) configured for backlighting the LCD, the LEDs arrayed according to a plurality of illumination zones;
a display controller configured for:
identifying an image to be displayed with the LCD;
determining an input grayscale value for each of a plurality of pixels comprising the image;
remapping the input grayscale values to output grayscale values; and
controlling the LCD to display the image according to the output grayscale values;
a backlight controller configured for:
determining a maximum grayscale value for each of the illumination zones, the maximum grayscale value for each illumination zone corresponding with a greatest one of the input grayscale values therein; and
controlling a normalized backlight luminance for each illumination zone according to the maximum grayscale value determined therefor.