Case: Accurate color measurement over whole display active area
Challenge:
One of our clients needed a turn key solution for measurement system, which can perform accurate color measurement over the whole display active area. Usually accurate color measurement devices measure only a spot on the display, but the possible color uniformity issues cannot be observed. Another way to measure color is to use imaging colorimeter, which requires multiple images to achieve color data. Either of these were suitable for our client. Accurate color measurement requires a minimum accuracy of ±4% in luminance and ±0.002 in CIE1931 x y color space.
Solution:
Standard bayer matrix based RGB color cameras do not have enough color resolution to reach desired accuracy, so a novel 3CMOS camera were chosen to perform color measurement. To ensure the accuracy, an ASTM E1336-11 and ISO-13655:2009 compatible spectrometer was selected to perform spot measurement, which results were used to correlate 3CMOS camera result for whole display active area. The delivery contained an efficient and accurate color measurement system, which supports multiple display types and sizes, suitable for both lab and manufacturing use.
Status: Accomplished
