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Voltage selection circuit, electrophoretic display apparatus, and electronic device

  • US 8,400,376 B2
  • Filed: 02/05/2009
  • Issued: 03/19/2013
  • Est. Priority Date: 03/24/2008
  • Status: Active Grant
First Claim
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1. A voltage selection circuit for outputting a potential selected from a plurality of input potentials, the voltage selection circuit capable of selectively outputting a first high-level potential being a highest potential, a second high-level potential, or a third high-level potential being a lowest potential from an output terminal thereof, the voltage selection circuit comprising:

  • a first switching circuit that supplies the first high-level potential to the output terminal;

    a second switching circuit that supplies the second high-level potential to the output terminal; and

    a third switching circuit that supplies the third high-level potential to the output terminal,wherein the first switching circuit includes a high-voltage transistor and a first level shifter connected to a first gate terminal of the high-voltage transistor,wherein the second switching circuit includes a first low-voltage transistor, a second level shifter connected to a second gate terminal of the first low-voltage transistor, and a first diode disposed between the first low-voltage transistor and the output terminal, andwherein the third switching circuit includes a second low-voltage transistor and a second diode disposed between the second low-voltage transistor and the output terminal.

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