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Flexible circuit wiring board and method of producing the same

  • US 5,444,188 A
  • Filed: 09/08/1993
  • Issued: 08/22/1995
  • Est. Priority Date: 01/14/1992
  • Status: Expired due to Term
First Claim
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1. A method of producing flexible circuit wiring boards comprising the steps of:

  • forming a circuit wiring pattern consisting of plural conductors on one surface of an insulating base member;

    adhering a surface protection layer to the exposed surface of said circuit wiring pattern, the surface protection layer defining at least a first cutaway portion at a location where conductors of said wiring pattern are to be terminated as projecting finger-like leads; and

    removing the insulating base member from areas where the leads are to be formed by projecting the beam of an excimer laser onto said base member.

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