Decoder circuit

Details Decoder circuit Decoder circuit

2008-07-22

2008-07-22

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

07403146

ABSTRACT:
A decoder circuit that selects a grayscale voltage responsive to digital input includes a first transistor circuit that selects grayscale voltages greater than a certain voltage and a second transistor circuit that selects grayscale voltages less than the certain voltage. The two transistor circuits are formed in separate substrates, one substrate being a well formed in the other substrate, or both substrates being wells formed in a third substrate. The substrate of the first transistor circuit is biased at a higher potential than the substrate of the second transistor circuit. This biasing scheme enables all selected grayscale voltages to propagate quickly through the decoder circuit.

REFERENCES:
patent: 6417827 (2002-07-01), Nagao et al.
patent: 6864869 (2005-03-01), Udo et al.
patent: 7126518 (2006-10-01), Tsuchi
patent: 7161517 (2007-01-01), Yen et al.
patent: 7327299 (2008-02-01), Yen et al.
patent: 2000-183747 (2000-06-01), None

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