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Current drive circuit and display device using same pixel circuit, and drive method

  • US 7,379,039 B2
  • Filed: 02/24/2004
  • Issued: 05/27/2008
  • Est. Priority Date: 07/14/1999
  • Status: Expired due to Fees
First Claim
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1. A current drive circuit for supplying a drive current to a driven object, including:

  • a control line,a signal line to which a signal current having a current level in accordance with information is supplied,a receiving part for fetching the signal current from the signal line when the control line selected,a converting part for converting a current level of the fetched signal current to a voltage level and holding the same, anda drive part for converting the held voltage signal to a current signal and outputting the drive current, whereinthe receiving part includes a fetch use insulating gate type field effect transistor having a control terminal, a first terminal, and a second terminal, the first terminal connected to a first terminal of the conversion use transistor the second terminal connected to the signal line, and the control terminal connected to the control line, andthe converting part includes a switch use transistor inserted between the first terminal and control terminal of the conversion use transistor.

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