Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2009-03-29
2011-11-01
Patel, Nitin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S087000
Reexamination Certificate
active
08049706
ABSTRACT:
A gate driving circuit capable of suppressing threshold voltage drift is disclosed for providing gate signals forwarded to gate lines. The gate driving circuit includes a plurality of shift register stages. Each shift register stage includes a pull-up unit, an energy-store unit, a buffer unit, a discharging unit, a pull-down unit, a control unit and a signal switching unit. The pull-up unit pulls up a gate signal according to a driving control voltage and a first clock. The energy-store unit provides the driving control voltage through performing a charging process based on an input signal received by the buffer unit. The pull-down unit pulls down the gate signal according to a control signal. The control unit generates the control signal based on the input signal and a second clock having a phase opposite to the first clock. The signal switching unit switches the control signal according to the first clock.
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Chunghwa Picture Tubes Ltd.
Hsu Winston
Margo Scott
Patel Nitin
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