Method and system for improving contrast ratio of OLED display panel

摘要

A method of raising contrast of an OLED display panel converts an original RGB signal into a HSI color space constructed by a hue component, a saturation component and an intensity component, and implements histogram statistics to the intensity component to obtain a histogram of the intensity component, and obtains a conversion parameter according to the histogram of the intensity component, and obtains the new low driving voltage with calculation of the conversion parameter in combination with the original low driving voltage, and meanwhile, keeps the hue component and the saturation component unchanged, and implements enhancement treatment to the intensity component to obtain a new intensity component, and then, converts the hue component, the saturation component and the new intensity component into a RGB color space to obtain a new R′G′B′ signal supplied to a pixel driving circuit.