Materials for electrochromic display devices
First Claim
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1. In an electrochromic display device comprising a transparent front electrode, a back electrode in spaced relation to said front electrode, and an electrochromic solution contained between said electrodes, the improvement according to which the electrochromic solution comprises a para-substituted triphenylamine compound having the formula ##STR4## wherein R is lower alkoxy, lower alkyl or halogen.
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Abstract
A display device containing an electrochromic solution comprising a para substituted triphenylamine compound having the formula ##STR1## wherein R is lower alkoxy, lower alkyl or halogen.
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4 Claims
- 1. In an electrochromic display device comprising a transparent front electrode, a back electrode in spaced relation to said front electrode, and an electrochromic solution contained between said electrodes, the improvement according to which the electrochromic solution comprises a para-substituted triphenylamine compound having the formula ##STR4## wherein R is lower alkoxy, lower alkyl or halogen.
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