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Circuit unit for timepiece and process for fabricating the same

  • US 4,796,239 A
  • Filed: 04/13/1987
  • Issued: 01/03/1989
  • Est. Priority Date: 05/08/1986
  • Status: Expired due to Term
First Claim
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1. In a circuit unit for a timepiece comprising a plurality of lead members constructed of individual metal sheets, the improvement comprising:

  • a lead frame to which an integrated circuit is die-bonded, said lead frame comprising a die-bonding lead member formed into a letter "H" and including a pair of parallel side portions and a connecting portion connecting said side portions and having said integrated circuit die-bonded to said connecting portion;

    other lead members comprising part of said lead frame and separated from said die-bonding lead member and arranged such that individual one end portions of said other lead members are positioned in the vicinity of said integrated circuit and electrically connected with said integrated circuit;

    both said die-bonding lead member and said individual one end portions of said other lead members being integrated with a potting resin for protecting said integrated circuit and/or an insulating plate backing said potting resin such that individual other end portions of said other lead members are exposed from the potting resin and are free of support by the insulating plate to define electrical contacts with external circuit elements; and

    both said parallel side portions being fixed on a holding member.

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