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 5:
6. The method for calculating the chromaticity value of the white screen of the display device of claim 1, wherein in the step S40, the tristimulus values comprise a red primary color tristimulus value X, a green primary color tristimulus value Y, and a blue primary color tristimulus value Z, and the red primary color tristimulus value X, the green primary color tristimulus value Y, and the blue primary color tristimulus value Z are calculated according to following formulas:

X=k∫λS(λ)·P(λ)·x(λ)dλ, 

Y=k∫λS(λ)·P(λ)·y(λ)dλ, 

Z=k∫λS(λ)·P(λ)·z(λ)dλ; 

wherein k is a tuning coefficient, λ is a wavelength, S(λ) is the initial spectrum value of the backlight source of the initial display device, P(λ) is the test transmittance spectrum value of the white screen of the display panel of the test display device, x(λ), y(λ), and z(λ) are respectively three spectrum tristimulus values of Standard Observer, and dλ represents a differential of the wavelength.