Patent ID: 11862120
Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for calculating a chromaticity value of a white screen of a display device, comprising:
acquiring initial spectrum values of a first sub-pixel, a second sub-pixel, a third sub-pixel, and a backlight source of an initial display device, and calculating an initial transmittance spectrum value of a white screen of a display panel of the initial display device by dividing a sum of the initial spectrum value of the first sub-pixel, the initial spectrum value of the second sub-pixel, and the initial spectrum value of the third sub-pixel by the initial spectrum value of the backlight source;
acquiring initial aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel of the initial display device, presetting test aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel of a test display device, and calculating relative variations of the test aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel relative to the initial aperture ratios of the first sub-pixel, the second sub-pixel, and the third sub-pixel, respectively;
calculating a test transmittance spectrum value of a white screen of a display panel of the test display device according to the initial transmittance spectrum value and the relative variations of the test aperture ratios relative to the initial aperture ratios;
calculating tristimulus values of the test display device according to the test transmittance spectrum value; and
calculating the chromaticity value of the white screen of the test display device according to the tri stimulus values.