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Transparent conductive film

  • US 4,419,399 A
  • Filed: 07/06/1981
  • Issued: 12/06/1983
  • Est. Priority Date: 07/06/1981
  • Status: Expired due to Term
First Claim
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1. A transparent conductive film comprising a polymeric supporting substrate in the form of a film or sheet having a transparent conductive layer formed on one surface of said substrate wherein said substrate is optically isotropic, has a thickness of 5 to 1000 microns, a retardation value of not more than 30 millimicrons, a heat distortion temperature of not lower than 80°

  • C., an average visible light transmittance of not less than 75%, a water vapor permeability of not higher than 30 g/24 hr·

    m2, an Izod impact strength of not less than 1.5 kg·

    cm/cm and the degree of swelling on a surface having the transparent layer thereon of not more than 0.5% in a solvent.

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