Bistable DMD addressing circuit and method

Details Bistable DMD addressing circuit and method Bistable DMD addressing circuit and method

1990-06-29

1992-08-25

Moskowitz, Nelson

Optical: systems and elements

Deflection using a moving element

Pivotal or rotational element

359198, 359212, G02F 129, G02B 2608, H01J 3124

Patent

active

051424053

ABSTRACT:
Bidirectional operation of the bistable DMD is preferred over unidirectional operation because it eliminates contrast degradation caused by duty-factor effects and permits lower voltage operation. However, bidirectional addressing requires either two drain lines and two transistors per pixel or one drain line and three transistors per pixel. An addressing scheme for bidirectional operation is disclosed that requires only a single drain line and one transistor per pixel. For megapixel DMDs used for high-definition television applications, this addressing scheme dramatically lowers the transistor count, with expected improvements in chip yield and cost.

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