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Drive circuit for el display panel

  • US 20050180083A1
  • Filed: 03/05/2003
  • Published: 08/18/2005
  • Est. Priority Date: 04/26/2002
  • Status: Abandoned Application
First Claim
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1. A driver circuit for an EL display panel comprising:

  • reference current generating means of generating a reference current;

    a first current source which is fed the reference current from the reference current generating means and outputs a first current which corresponds to the reference current to a plurality of second current sources;

    the second current sources which are fed the first current outputted from the first current source and output a second current which corresponds to the first current to a plurality of third current sources; and

    the third current sources which are fed the second current outputted from the second current sources and output a third current which corresponds to the second current to a plurality of fourth current sources, characterize in that among the fourth current sources, an appropriate number of unit current sources are selected according to input image data.

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