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Personal digital assistant

  • US 8,346,316 B2
  • Filed: 04/02/2009
  • Issued: 01/01/2013
  • Est. Priority Date: 08/22/2008
  • Status: Active Grant
First Claim
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1. A personal digital assistant, comprising:

  • a body comprising a display screen; and

    a touch panel located on a surface of the display screen, the touch panel being a resistance-type touch panel, and comprising;

    a first electrode plate comprising;

    a first substrate, a first transparent conductive layer located on a first surface of the first substrate, the first transparent conductive layer comprising a plurality of carbon nanotubes, which are arranged primarily along a first direction, andtwo first electrodes that are connected to the first transparent conductive layer; and

    a second electrode plate separated from the first electrode plate, and comprising;

    a second substrate located adjacent to the display screen;

    a second transparent conductive layer located on the second substrate opposite to the first surface;

    the second transparent conductive layer comprising a plurality of carbon nanotubes, which are arranged primarily along a second direction, the first direction being perpendicular to the second direction; and

    two second electrodes that are electrically connected to the second transparent conductive layer.

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