US 12,332,118 B2
System and method for determining a color mix on a three color display device with low luminance or illuminance
Steven T. Beetz, St. Louis, MO (US)
Assigned to THE BOEING COMPANY, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Apr. 5, 2022, as Appl. No. 17/657,956.
Prior Publication US 2023/0314222 A1, Oct. 5, 2023
Int. Cl. G01J 3/50 (2006.01); G01J 3/46 (2006.01); G09G 3/00 (2006.01)
CPC G01J 3/506 (2013.01) [G01J 3/462 (2013.01); G09G 3/006 (2013.01); G09G 2340/06 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for achieving a target white chromaticity value and a target white light output value on a display device, the method comprising:
measuring a chromaticity value of a first primary color, a chromaticity value of a first secondary color, and a chromaticity value of a second secondary color on the display device using a photometer;
measuring a current white chromaticity value and a current white light output value on the display device using the photometer;
generating a plot of a color gamut triangle based at least partially upon the measured chromaticity value of the first primary color, the measured chromaticity value of the first secondary color, the measured chromaticity value of the second secondary color, and the measured current white chromaticity value;
determining a chromaticity value of a second primary color on the color gamut triangle based at least partially upon the measured chromaticity value of the first primary color, the measured chromaticity value of the first secondary color, the measured chromaticity value of the second secondary color, and the measured current white chromaticity value;
determining a chromaticity value of a third primary color on the color gamut triangle based at least partially upon the measured chromaticity value of the first primary color, the measured chromaticity value of the first secondary color, the measured chromaticity value of the second secondary color, and the measured current white chromaticity value;
determining a target chromaticity value of the first secondary color based at least partially upon the chromaticity value of the third primary color and the target white chromaticity value;
determining a target chromaticity value of the second secondary color based at least partially upon the chromaticity value of the second primary color and the target white chromaticity value; and
modifying a light output value of the primary colors based at least partially upon the chromaticity value of the second primary color, the chromaticity value of the third primary color, the target chromaticity value of the first secondary color, and the target chromaticity value of the second secondary color to produce a modified white chromaticity value and a modified white light output value on the display device.