Color Correction in Color Sequential LCDs

Color sequential LCDs benefit from high efficiency and high resolution, but suffer from annoying color breakup. Various methods have recently been proposed to suppress color breakup, e.g., the stencil color sequential and local primary desaturation methods. Most of these approaches apply dimmable and multi-color LED matrix backlights to adjust the intensity and chromaticity of the display in both the spatial and temporal domains. In this paper we summarize the factors for luminance and color control in a color sequential LCD with minimized color breakup. Taking into account the properties of the backlight, LC-panel transmission and LC response, a general algorithm for color rendering in a color sequential LCD is proposed. Specially, the effect of the LC response delay on the luminance and color reproduction accuracy is investigated and a compensation method is proposed.