Electrochromic display device
First Claim
1. An electrochromic display device comprising a pair of electrodes which are disposed with a specified space therebetween, at least one of said electrodes being transparent, and a non-aqueous electrolytic solution filled in the space and comprised of a styryl-like compound and a supporting electrolyte dissolved in a solvent, said styryl-like compound being represented by the formula:
- ##STR37## in which Q represents a benzene ring with or without substituents and/or a condensed ring, R1 and R2 independently represent a lower alkyl group, a hydroxyalkyl group or an alkoxyalkyl group, R3 represents hydrogen, an alkyl group, an alkoxy group, a halogen, a nitrile group, an aromatic group or a phenoxy group, Y represents oxygen or sulfur, Z represents an alkylene group of 2 to 4 carbon atoms, with or without an alkyl substituents, required to complete a ring structure together with ##STR38## and A represents a residue resulting from a condensation reaction of the methyl group or methylene group in the 2-position of a precursor indoline derivative of the formula;
##STR39## where , R1, R2, R3, Y and Z have the same meanings as defined above, respectively, with a member selected from the group consisting of aromatic aldehydes, heterocyclic alcehydes, aromatic nitroso compounds and heterocyclic nitroso compounds.
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Abstract
An electrochromic display device comprising a pair of electrodes which are disposed with a specified space therebetween, at least one of the electrodes being transparent, and a non-aqueous electrolytic solution filled in the space and comprised of a styryl-like compound and a supporting electrolyte dissolved in a solvent, the styryl-like compound being represented by the formula: ##STR1## in which Q represents a benzene ring with or without substituents and/or a condensed ring, R1 and R2 independently represent a lower alkyl group, a hydroxyalkyl group or an alkoxyalkyl group, R3 represents hydrogen, an alkyl group, an alkoxy group, a halogen, a nitrile group, an aromatic group or a phenoxy group, Y represents oxygen or sulfur, Z represents an alkylene group of 2 to 4 carbon atoms, with or without an alkyl substituent, required to complete a ring structure together with ##STR2## and A represents a residue resulting from a condensation reaction of the methyl group of methylene group in the 2-position of a precursor indoline derivative of the formula: ##STR3## where Q, R1, R2, R3, Y and Z have the same meanings as defined above with a member selected from the group consisting of aromatic aldehydes, heterocyclic aldehydes, aromatic nitroso compounds and heterocyclic nitroso compounds.
18 Citations
8 Claims
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1. An electrochromic display device comprising a pair of electrodes which are disposed with a specified space therebetween, at least one of said electrodes being transparent, and a non-aqueous electrolytic solution filled in the space and comprised of a styryl-like compound and a supporting electrolyte dissolved in a solvent, said styryl-like compound being represented by the formula:
- ##STR37## in which Q represents a benzene ring with or without substituents and/or a condensed ring, R1 and R2 independently represent a lower alkyl group, a hydroxyalkyl group or an alkoxyalkyl group, R3 represents hydrogen, an alkyl group, an alkoxy group, a halogen, a nitrile group, an aromatic group or a phenoxy group, Y represents oxygen or sulfur, Z represents an alkylene group of 2 to 4 carbon atoms, with or without an alkyl substituents, required to complete a ring structure together with ##STR38## and A represents a residue resulting from a condensation reaction of the methyl group or methylene group in the 2-position of a precursor indoline derivative of the formula;
##STR39## where , R1, R2, R3, Y and Z have the same meanings as defined above, respectively, with a member selected from the group consisting of aromatic aldehydes, heterocyclic alcehydes, aromatic nitroso compounds and heterocyclic nitroso compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- ##STR37## in which Q represents a benzene ring with or without substituents and/or a condensed ring, R1 and R2 independently represent a lower alkyl group, a hydroxyalkyl group or an alkoxyalkyl group, R3 represents hydrogen, an alkyl group, an alkoxy group, a halogen, a nitrile group, an aromatic group or a phenoxy group, Y represents oxygen or sulfur, Z represents an alkylene group of 2 to 4 carbon atoms, with or without an alkyl substituents, required to complete a ring structure together with ##STR38## and A represents a residue resulting from a condensation reaction of the methyl group or methylene group in the 2-position of a precursor indoline derivative of the formula;
Specification
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- Resources
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Current AssigneeMatsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
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Original AssigneeMatsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
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InventorsYamashita, Akio, Asakawa, Shirow
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Primary Examiner(s)McCamish, Marion
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Application NumberUS06/197,328Time in Patent Office643 DaysField of Search428/1, 428/35, 428/411, 428/702, 350/160 LC, 350/330, 252/299US Class Current313/483CPC Class CodesC09K 19/3483 the heterocyclic ring being...C09K 19/54 Additives having no specifi...G02F 1/1503 caused by oxidation-reducti...
