G - Physics – 11 – C
Patent
G - Physics
11
C
328/44
G11C 19/28 (2006.01) G11C 19/18 (2006.01)
Patent
CA 1249641
ABSTRACT SHIFT REGISTER STAGE A shift register stage responsive to a clock signal having first and second phases, the stage having an input and an output node (206 and 228) and comprising: capacitive storage means (208); switch means (202, 210) connected between the capacitive storage means and the input node of the stage and having a control electrode; and amplifier means (230) connected between the capacitive storage means and the output node of the stage, the switch means being conductive and non-conductive respectively during the first and second phases of the clock signal so that the capacitive storage means is charged during the first phase of the clock signal to a voltage representative of the voltage at the input node of the stage, and the amplifier means being operative during at least the second phase of the clock signal so that the amplifier means produces at the output node of the stage a voltage representative of the voltage on the capacitive storage means, wherein the voltage applied to the control electrode of the switch means is offset during the first phase of the clock signal by a first offset value from the voltage on the capacitive storage means and is offset during the second phase of the clock signal by a second offset value from the voltage on the capacitive storage means such that any charge removed from the capacitive storage means due to capacitive coupling effects between the capacitive storage means and the control electrode is independent of the voltage on the capacitive storage means.
470103
Gowling Lafleur Henderson Llp
Motorola Inc.
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