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Keypad illuminating system for a data processing device

  • US 6,834,975 B2
  • Filed: 12/11/2002
  • Issued: 12/28/2004
  • Est. Priority Date: 09/26/2002
  • Status: Active Grant
First Claim
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1. A keypad illuminating system for a data processing device, comprising:

  • a keypad;

    a light source adapted to be mounted on the data processing device for directing non-visible light toward said keypad; and

    a photoluminescent substance associated with said keypad for emitting visible light in response to said non-visible light emitted from said light source.

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