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Display panel and display panel driving method

  • US 7,317,429 B2
  • Filed: 12/12/2002
  • Issued: 01/08/2008
  • Est. Priority Date: 12/28/2001
  • Status: Active Grant
First Claim
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1. A display panel comprising:

  • at least one optical element which has a pair of electrodes and exhibits an optical operation corresponding to an electric current flowing between the pair of electrodes;

    at least one current line;

    at least one switch circuit which supplies a memory current having a predetermined current value to the current line during a selection period, and which stops supply of the current to the current line during a non-selection period; and

    at least one current memory circuit which stores current data corresponding to the current value of the memory current flowing through the current line during the selection period and, in accordance with the current data stored during the selection period, supplies a display current having a current value substantially equal to the current value of the memory current to the optical element during the non-selection period;

    wherein the current memory circuit comprises a current control transistor connected in series with the optical element.

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