Shift register
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Sep 27, 2013
filing date -
Oct 5, 2012
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Abstract
A shift register is realized having a simple construction with which it is possible to switch the scanning order of gate bus lines and the occurrence of an erroneous operation caused by a threshold voltage drop can be prevented. Unit circuits that make up the shift register are configured of: a thin film transistor in which a third clock is supplied to the gate terminal, the drain terminal is connected to a first node, and a first input signal (output signal of prior stage) is supplied to the source terminal; a thin film transistor in which a second clock is supplied to the gate terminal, the drain terminal is connected to the first node, and a second input signal (output signal of subsequent stage) is supplied to the source terminal; and a thin film transistor in which the gate terminal is connected to the first node, a first clock is supplied to the drain terminal, and the source terminal is connected to an output terminal. The shift direction is switched by changing the generation order of pulses of clock signals.
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