Prevention of charge accumulation in micromirror devices...

Details Prevention of charge accumulation in micromirror devices... Prevention of charge accumulation in micromirror devices...

2007-09-25

2007-09-25

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S108000, C345S204000, C345S205000, C359S251000

Reexamination Certificate

active

10607687

ABSTRACT:
Methods and apparatus are provided for preventing charge accumulation in microelectromechanical systems, especially in micromirror array devices having a plurality of micromirrors. Voltages are applied to the micromirrors for actuating the micromirrors. Polarities of the voltage differences between mirror plates and electrodes are inverted so as to prevent charge accumulation.

REFERENCES:
patent: 4441791 (1984-04-01), Hornbeck
patent: 6046840 (2000-04-01), Huibers
patent: 6724379 (2004-04-01), Markis
patent: 2004/0190716 (2004-09-01), Nelson

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