Sony Corp is sufficient impressed with the new Texas Instruments Inc digital micromirror display (CI No 2,101) that it has decided to work with Texas to put the thing into production, the Nippon Keizai Shimbun reported. The projection display was conceived for the high definition television market and consists of 400,000 tiny mirrors mounted on static RAM cells. The mirrors are made from a highly reflection aluminium alloy and each is 17 microns square. Each is mounted on a pair of 2 micron aluminium pillars at diagonal corners above the statics, which provide a drive signal to make it rotate by electrostatic attraction, effectively switching it on and off. A white light source is passed through a condenser lens and motor-driven red, green, and blue colour filters and onto the chip surface.
