Principles and applications of the digital micromirror device in projection displays

The fabrication techniques, control strategy, and electromechanical modeling and performance of digital micromirror devices (DMD) are discussed. Some of the potential artifacts inherent in a pulse-width-modulated display and their amelioration in digital light processing (DLP) systems are described. DLP is a revolutionary way to project and display images. The key elements of the technique include the signal source - generally computer graphics or video, coupled with memory and signal processing in the front end of the system, a light source, color filters, optical elements to couple the light from the source onto the device and from the device to the viewing screen, and the DMD.