Electrochromic polymeric solid films, manufacturing electrochromic devices using such sold films, and processes for making such solid films and devices

  • US 6,954,300 B2
  • Filed: 04/17/2001
  • Issued: 10/11/2005
  • Est. Priority Date: 02/26/1993
  • Status: Expired due to Fees
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First Claim
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1. A variable transmission assembly suitable for use as a vehicular glazing or mirror:

  • a first substrate having a first transparent conductor coated surface;

    a second substrate having a second conductor coated surface, said second substrate positioned in substantially parallel spaced-apart relationship with said first substrate and with said first and second conductor coated surfaces facing each other;

    an electrochromic medium disposed between said first and second substrates whereby the transmission of light through said electrochromic medium is changed when an electrical potential is applied thereto and wherein said electrochromic medium comprises a plasticized, cross-linked polymeric solid film formed by curing an electrochromic monomer composition that includes at least one polyfunctional component capable of cross-linking, at least one anodic electrochromic compound, at least one cathodic electrochromic compound and a plasticizer, wherein said anodic electrochromic compound is an organic or organometallic compound and said cathodic electrochromic compound is an organic or organometallic compound; and

    wherein the spaced-apart distance between said first substrate and said second substrate is at least about 10 microns.

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