Integrated matrix display circuitry

Details Integrated matrix display circuitry Integrated matrix display circuitry

1988-02-01

1990-10-16

Moore, David K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340784, 340811, G09G 320

Patent

active

049638602

ABSTRACT:
A matrix display apparatus fabricated in low mobility material includes integrated commutating circuitry for applying data signals to the display elements. The commutating circuitry includes demultiplexing circuitry coupled to a first set of latch elements. These latch elements are coupled to a second set of latch elements via transmission gates, and the output terminals of the second set of latch elements are coupled to column buffers. The demultiplexing circuitry includes pass transistors to coupled display signals to respective ones of the first set of latches. The first set of latches are preconditioned by appropriate timing signals so that the demultiplexor pass transistors operate in a common source mode to shorten the overall switching time of the commutating circuitry.

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