Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-12-05
2006-12-05
Chang, Kent (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C377S081000, C377S064000
Reexamination Certificate
active
07145545
ABSTRACT:
A shift register is provided, for example, for use in scan and data line drivers for an active matrix liquid crystal display. The shift register comprises X stages, where X is an integer greater than 3. A clock signal generator supplies Y-phase clock signals, where Y is greater than 2. Each of the stages comprises a flip-flop and logic circuit and receives a set enable signal from the immediately preceding stage output. Each stage is set by the leading edge of one of the clock phases in the pressure of the set enable signal and is reset by the trailing edge of the clock phase. In order to provide bi-directional operation, each intermediate stage also receives set enable signals from the immediately succeeding stage output. The clock signal generator supplies clock pulses in a first order for shift register operation in the forward direction and in the reverse order for shift register operation in the reverse direction.
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European Search Report corresponding to Application 04100244.5, dated May 27, 2004.
Walton Harry Garth
Zebedee Patrick A.
Chang Kent
Renner , Otto, Boisselle & Sklar, LLP
Sharp Kabushiki Kaisha
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