A Novel Method to Accurately Predict Color Information of Liquid Crystal Displays With Light Leakage From Black Pixels

• Published in: Journal of display technology Vol. 9; no. 3; pp. 162 - 169
• Main Authors: Kim, Jong-Man, Kim, Jongbin, Cho, Youngmin, Kim, Kwangjoon, Lee, Seung-Woo
• Format: Journal Article
• Language: English
• Published: IEEE 01-03-2013
• Subjects: Color matching function; color of liquid crystal display (LCD); Data mining; Image color analysis; light leakage; Liquid crystal displays; Mathematical model; Measurement uncertainty; Transfer functions; tri-stimulus values
• ISSN: 1551-319X; 1558-9323
• DOI: 10.1109/JDT.2012.2236535

This paper proposes a new method to predict color information of liquid crystal displays (LCDs) very accurately. Leaked light from black sub-pixels causes errors of the color prediction based on the individually measured RGB color information. We present a new method to remove the bad influence of the light leakage. We prove that this work can calculate the pure colorimetric information regardless of the shapes of opto-electronic transfer function (OETF) of LCDs. Without this technology, average errors of luminance (Δ Y ) and chromaticity coordinate (Δ xy ) over 30 colors were 0.58 cd/m 2 and 0.04, respectively. When we applied the proposed method, however, average errors of Δ Y and Δ xy were 0.03 cd/m 2 and 0.005, respectively. Experimental results show that our method can extract pure primary color information with extremely low errors.