Patent ID: 6630918
Filing Date: 2003-10-07
Classification: G09G,H04N

Abstract:
A compensation method for improving color purity and color temperature of a plasma display panel by adjusting the strength of input image signals, comprising the steps of:finding a brightness of a pixel, wherein said pixel is a combination of a red discharge cell, a green discharge cell, and a blue discharge cell, and wherein said brightness is a summation of a first brightness of said red discharge cell, a second brightness of said green discharge cell, and a third brightness of said blue discharge cell; expressing said brightness of said pixel as a summation of a first factor multiplied by a first brightness of a phosphor layer of said red discharge cell, a second factor multiplied by a second brightness of a phosphor layer of said green discharge cell, a third factor multiplied by a third brightness of a phosphor layer of said blue discharge cell, and an extra factor multiplied by an extra brightness of an orange red visible light generated during a gas discharging process, wherein said extra factor is a summation of said first factor, said second factor, and said third factor, and wherein said extra brightness is expressed as a fourth factor multiplied by said first brightness plus a fifth factor multiplied by said second brightness, plus a sixth factor multiplied by said third brightness; and adjusting said brightness of said pixel by subtracting a first term from said first brightness, subtracting a second term from said second brightness, and subtracting a third term from said third brightness, wherein said first term is a product of said fourth factor, said first brightness, and a common term, wherein said second term is a product of said fifth factor, said second brightness, and said common term, and wherein said third term is a product of said sixth factor, said third brightness, and said common term, and wherein said common term is a summation of said first factor, said second factor, and said third factor.