Liquid crystal displays having improved hermetic seal

  • US 4,418,102 A
  • Filed: 05/14/1981
  • Issued: 11/29/1983
  • Est. Priority Date: 05/14/1981
  • Status: Expired due to Fees
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First Claim
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1. A hermetically sealed liquid crystal display comprising a liquid crystal layer enclosed between a pair of parallel plates of which at least one plate is transparent, said plates chemically bonded together by means of an electrically insulative sealant material disposed between the plates and surrounding the liquid crystal layer, said display having improved resistance to vapor penetration provided by said sealant material being a crosslinked thermoset product of an initially uncrosslinked composition comprising a mixture of at least one phenoxy resin and at least one epoxy resin in conjunction with a crosslinking agent, said composition adapted to be sufficiently flowable before crosslinking to enable the composition to be disposed as said sealant material between said plates, and said composition containing an amount of said crosslinking agent sufficient to insure that said composition is sufficiently crosslinked to provide said sealant material with improved resistance to vapor penetration after said composition has been disposed as said sealant material between the plates.

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