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US5085973A Expired / Lapsed US ⏱️ 0.0 years remaining

Colored filter element containing layers of polymerizable composition

Assignee: Panasonic Holdings Corp
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Filing: 1991-06-13
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Granted: 1992-02-04
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Expires: 2011-06-13
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Abstract

Abstract Herein is provided a color filter prepared by providing red, green and blue image elements, comprising as photosensitive resin and a pigment, and a black matrix on a transparent substrate and further providing thereon a transparent electrode layer, wherein said photosensitive resin is so formulated that it comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator comprising a 2-mercapto-5-substituted thiadiazole compound represented by general formulas (I) and/or general formulas (II), a phenyl ketone compound represented by general formulas (III) and 2,4,5-triphenylimidazolyl dimer composed of two lophine residues combined to each other through intermediation of a single covalent bond. A pattern having a high precision and a good surface smoothness can be obtained owing to the photosensitive resin, and a color filter having a good environmental resistance can be obtained owning to the pigment.

Inventors

  • 👤 Tokihiko Shimizu
  • 👤 Kesanao Kobayashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 08:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516; G03C7/00; G03C7/04; G03C7/06; G03C7/10; G03C7/12; G03F7/0005; G03F7/0007

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 241 words
A color filter prepared by providing red, green and blue image elements, comprising a photosensitive resin and a pigment, and a black matrix on a transparent substrate and further providing a transparent electrode layer either on the image elements thus formed or on said transparent substrate, said photosensitive resin comprising a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator, said photopolymerization initiator consisting of at least one member selected from the 2-mercapto-5-substituted thiadiazole compounds represented by the following general formula (I) and/or general formula (II), a phenyl ketone compound represented by the following general formula (III), and a 2,4,5-triphenylimidazolyl dimer composed of two lophine residues combined to each other through intermediation of a single covalent bond: ##STR7## wherein R 1 represents alkyl group, alkylthio group or aralkylthio group, and R 2 represents substituted or unsubstituted alkylene group; ##STR8## wherein X 1 , identical or different, represents hydrogen atom, alkyl group having 1 to 6 carbon atoms, alkoxycarboxy group having 1 to 6 carbon atoms, alkoxycarbonyl group having 1 to 6 carbon atoms, alkyl-disubstituted-amino group having 1 to 6 carbon atoms or halogen atom, and R 3 represents hydrogen atom or a group represented by the following general formula (IV): ##STR9## wherein Y represents single bond or a group of the following formula ##STR10## wherein R 4 represents hydrogen atom or OR 5 , and R 5 represents hydrogen atom or alkyl group having 1 to 6 carbon atoms.
Claim 2
Dependent Claim 241 words
A color filter prepared by providing red, green and blue image elements, comprising a photosensitive resin and a pigment, and a black matrix on a transparent substrate and further providing a transparent electrode layer either on the image elements thus formed or on said transparent substrate, said photosensitive resin comprising a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator, said photopolymerization initiator consisting of at least one member selected from the 2-mercapto-5-substituted thiadiazole compounds represented by the following general formula (I) and/or general formula (II), a phenyl ketone compound represented by the following general formula (III), and a 2,4,5-triphenylimidazolyl dimer composed of two lophine residues combined to each other through intermediation of a single covalent bond: ##STR7## wherein R 1 represents alkyl group, alkylthio group or aralkylthio group, and R 2 represents substituted or unsubstituted alkylene group; ##STR8## wherein X 1 , identical or different, represents hydrogen atom, alkyl group having 1 to 6 carbon atoms, alkoxycarboxy group having 1 to 6 carbon atoms, alkoxycarbonyl group having 1 to 6 carbon atoms, alkyl-disubstituted-amino group having 1 to 6 carbon atoms or halogen atom, and R 3 represents hydrogen atom or a group represented by the following general formula (IV): ##STR9## wherein Y represents single bond or a group of the following formula ##STR10## wherein R 4 represents hydrogen atom or OR 5 , and R 5 represents hydrogen atom or alkyl group having 1 to 6 carbon atoms.

References Cited (Backward Citations)

US3041172A Cited
US3202508A Cited
US3615448A Cited
US4042476A Cited
US4341860A Cited
US4477327A Cited
US4934791A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-02-03 1995-08-05 1996-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-02-03 1999-08-05 2000-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-02-03 2003-08-05 2004-02-04 $7700.00 Window Closed / Lapsed

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