Since there are great numbers of combinations of BLU/LC/CF/ITO/OC for LCD, an automatic calculation system based on Big Data strategy, was established to acquire optimal transmittance and color gamut. Using this system, 102 million combinations were calculated and nearly 15% increase of transmittance compare to that by normal method was achieved, under same condition of color gamut (NTSC85%) for our recent 75″8K product.