Scanner, electro-optical panel, electro-optical display device and electronic apparatus

摘要

A scanner includes a plurality of unit circuits configured with transistors of a same conductivity type. In the scanner, the unit circuit constituting the scanner includes an output transistor that selectively outputs, to an output terminal of the unit circuit, a signal given from an outside. A gate electrode of the output transistor is connected to one end of a voltage limiting transistor, and a gate electrode of the voltage limiting transistor is supplied with a first power supply potential.

主权项

1. A scanner comprising a plurality of unit circuits, wherein
a unit circuit of the plurality of unit circuits includes
a first transistor having a drain electrode to which a signal is input, a source electrode coupled to a scan line, and a gate electrode coupled to a bootstrap note,a capacitor coupled between the bootstrap node and the source electrode of the first transistor,a second transistor having a source electrode to which a second power supply potential is input, a drain electrode coupled to the scan line, and a gate electrode to which another signal whose phase is reverse of the signal input to the drain electrode of the first transistor is input, anda third transistor having a source electrode coupled to the bootstrap node, and a gate electrode to which a first power supply potential is input, wherein the unit circuit includes a cutoff switch that turns to a conductive state by an output signal from another unit circuit of the plurality of the unit circuits and writes the second power supply potential into the gate electrode of the first transistor to cut off the first transistor, and wherein the cutoff switch is coupled to a drain electrode of the third transistor.