Capacitive touchpad integrated with key and handwriting functions

  • US 7,274,353 B2
  • Filed: 09/24/2003
  • Issued: 09/25/2007
  • Est. Priority Date: 04/02/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A capacitive touchpad integrated with key and handwriting functions, comprising:

  • a panel for touch inputting;

    a first pattern on said panel for representing a mode switch to switch said touchpad between a key mode and a handwriting mode;

    a plurality of regions defined on said panel; and

    a plurality of second patterns on said plurality of regions for operation in said key and handwriting modes;

    wherein said panel comprises;

    a substrate selected from the group consisting of PCB, membrane and transparent plate;

    a conductor wiring on said substrate; and

    an insulator covered on said conductor wiring.

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