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Apparatus for driving light emitting element and system for driving light emitting element

  • US 20020122308A1
  • Filed: 03/05/2002
  • Published: 09/05/2002
  • Est. Priority Date: 03/05/2001
  • Status: Active Grant
First Claim
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1. An apparatus for driving a light emitting element in response to input data, the light emitting element caused to emit light by flowing a direct current, the apparatus comprising:

  • a voltage source; and

    a switching section disposed between the voltage source and the light emitting element and controlled on a basis of the input data, wherein a resistance value from an output end of the voltage source to a drive end of the light emitting element is smaller than an internal resistance value of the light emitting element; and

    wherein a current flowing into the voltage source is smaller than a current flowing into the light emitting element.

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