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An integrated low-power high-voltage driving circuit for Digital Micromirror Devices (DMD™)

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4 Author(s)
Jianbai Wang ; Pixel Development, Digital Light Processing (DLP¿), Texas Instruments Inc., USA ; James Huffman ; Paulo Pinheiro ; James Hall

A digital miromirror device (DMDtrade) is a micromachined high-density light-modulating system widely used in front projectors, high-definition TVs and digital cinemas. Although the high-speed memory and digital control electronics have long been integrated underneath the micromirror array, high-voltage reset waveforms had been provided separately and synchronized with the DMD chip to actuate the micromirrors. In this work, using drain-extended transistors, the high-voltage driver electronics are successfully integrated on DMDs to generate local reset waveforms having voltage variations up to 30 V at a fast slew rate. At fast charging/discharging rates, the transistor reliability requirements are still satisfied and the driver electronics maintain low average current consumption.

Published in:

2009 Digest of Technical Papers International Conference on Consumer Electronics

Date of Conference:

10-14 Jan. 2009