Brightness Improvement of Color LCD Systems Using White Sub-pixel Structure and Fuzzy Mapping Algorithm

This paper presents three novel color filter structures and a fuzzy mapping algorithm for improving brightness of color LCD systems. On the basis of human vision discrimination, the three color filter structures with white sub-pixels are presented to enhance brightness of conventional stripe, Delta and PenTile color filter architectures without loss of their original color saturation and resolution. A new fuzzy mapping algorithm using RGB sub-pixel data around white sub-pixels is proposed to obtain better image quality. Numerous simulation and experimental results are provided to show the efficacy of the proposed structures and mapping method. The proposed techniques can be expected to be pragmatic and effective in designing color LCD display systems for electronic consumer products, such as notebooks, personal digital assistants, mobile phones and etc.