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Metallic printed board

  • US 5,316,831 A
  • Filed: 05/06/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 05/08/1991
  • Status: Expired due to Fees
First Claim
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1. A metallic printed board having layers including a metallic plate, an electric insulating layer and a metallic film, comprising:

  • a plurality of insulating regions in said electric insulating layer, said plurality of insulating regions being formed respectively of a plurality of electric insulating materials, one of said plurality of electric insulating materials having a dielectric constant which is less than or equal to 5.0, another of said plurality of electric insulating materials having a thermal resistance which is less than or equal to 2.2°

    C/W said plurality of insulating regions being arranged on an identical plane surface of said metallic plate.

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