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Driver circuit, display device including the driver circuit, and electronic appliance including the display device

  • US 8,582,716 B2
  • Filed: 01/10/2013
  • Issued: 11/12/2013
  • Est. Priority Date: 09/24/2009
  • Status: Active Grant
First Claim
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1. A driver circuit comprising:

  • a shift register comprising an inverter circuit and a switch,wherein the inverter circuit comprises a first thin film transistor and a second thin film transistor,wherein the switch comprises a third thin film transistor,wherein the first to third thin film transistors each are depletion-mode transistors, andwherein an amplitude voltage of clock signals for driving the third thin film transistor is higher than a power supply voltage for driving the inverter circuit.

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