DIFFRACTIVE TECHNOLOGY BASED METHOD AND SYSTEM FOR DYNAMIC CONTRAST MANIPULATION IN DISPLAY SYSTEMS

摘要

The present invention is related to a method and system providing dynamic contrast control in scanning line color display systems, and particularly to a method and system comprising at least two modulator units, one for modulating pixel information in a line to be displayed while the other one provides illumination intensity control over different pixel areas or clusters of pixels of said same line to be displayed, by using a tunable diffractive grating element (TDG) in the illumination path to provide image source dependent active brightness level control, i.e. 'dynamic contrast', as well as a shutter function for pixels off transition periods.