US4315978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state color imaging device having a color filter array using a photocrosslinkable barrier
Assignee: Eastman Kodak Co
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Filing: 1980-03-06
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Granted: 1982-02-16
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Expires: 2000-03-06
Abstract
Abstract A color filter array for a solid-state imaging device is disclosed. The color filter array is of the "wash-off" type wherein the individual filter elements are formed by dyeing tiny islands of a dyeable composition. As a barrier layer, the color filter array of the present disclosure uses a photocrosslinkable dye-impermeable polymer. The barrier is coated over a set of filter elements. A method of making the described solid-state device is also disclosed.
Inventors
- 👤 Susan E. Hartman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; H; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/331
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
129 words
A solid-state color imaging device comprising a support having a surface comprising solid-state radiation-sensitive elements and bonding pad areas and, superimposed on said radiation-sensitive elements, in microregistration, a color filter array having at least three sets of filter elements, each filter element being a dyed island of a dyeable composition having an area less than about 1.0×10 -8 m 2 , said color filter array comprising: a first set of filter elements on the surface of said device, a second set of filter elements separated from said surface by a layer of a crosslinked dye-impermeable polymer and a third set of filter elements separated from the surface of the device by two layers of a cross-linked dye-impermeable polymer, said bonding pad areas being substantially free from said dye-impermeable polymer.
Claim 2
Dependent Claim
129 words
A solid-state color imaging device comprising a support having a surface comprising solid-state radiation-sensitive elements and bonding pad areas and, superimposed on said radiation-sensitive elements, in microregistration, a color filter array having at least three sets of filter elements, each filter element being a dyed island of a dyeable composition having an area less than about 1.0×10 -8 m 2 , said color filter array comprising: a first set of filter elements on the surface of said device, a second set of filter elements separated from said surface by a layer of a crosslinked dye-impermeable polymer and a third set of filter elements separated from the surface of the device by two layers of a cross-linked dye-impermeable polymer, said bonding pad areas being substantially free from said dye-impermeable polymer.
Claim 3
Dependent Claim
13 words
The device of claim 1 wherein said crosslinked dye-impermeable polymer is a polyester-ionomer.
Claim 4
Dependent Claim
60 words
The device of claim 1 wherein said crosslinked dye-impermeable polymer is a polyester-ionomer comprising, based on the total acid units of the polyester: from about 30-90 mole percent of a dicarboxylic acid-derived crosslinked repeating unit, from about 5-50 mole percent of a dicarboxylic acid-derived hydrophobic repeating unit and from about 2-40 mole percent of a dicarboxylic acid-derived ionic repeating unit.
Claim 5
Dependent Claim
47 words
The device according to claim 3 wherein: said crosslinked repeating unit is derived from a unit containing nonaromatic ethylenic unsaturation and said ionic repeating unit is derived from a unit containing an alkali metal sulfonate or an iminodisulfonyl unit containing monovalent cations as imido nitrogen atom substituents.
Claim 6
Dependent Claim
40 words
The device according to claim 4 wherein: said crosslinked repeating unit is selected from the group consisting of phenylenediacrylate, cinnamylidenemalonate, cyclohexylenedicarboxylate, cyclohexadienedicarboxylate and 1,2-diphenylcyclopropen-3-ylcarboxylate, and said ionic repeating unit is selected from the group consisting of 3,3'-sodioiminodisulfonyldibenzoate and 5-[N-(4-tolylsulfonyl)-N-potassiosulfamyl]- 1,3-benzenedicarboxylate.
Claim 7
Dependent Claim
23 words
The device according to claim 1 wherein said crosslinked dye-impermeable polymer is selected from the group consisting of poly[ethylene-co-1,4-cyclohexylenedimethylene(70:30)-1,1,3-trimethyl-3-phenyl-5,4'-indandicarboxylate-co-3,3'-(1,4-phenylene)diacrylate-co-3,3'-sodioiminodisulfonyldibenzoate(45:50:5)], poly[ethylene-co-1,4-cyclohexylenedimethylene(70:30)-1,1,3-trimethyl-3-phenyl-5,4'- indandicarboxylate-co-3,3'-(1,4-phenylene)diacrylate-co-5-(4-sodiosulfophenoxy)-1,3-benzenedicarboxylate(45:50:5)], and poly[1,4-cyclohexylenebis(oxyethylene)-co-3,3'-(1,4-phenylene)diacrylate-co-3,3'-sodioiminodisulfonyldibenzoate(95:5)].
Claim 8
Dependent Claim
23 words
A device according to claim 1 wherein said dyeable composition comprises a water-soluble, light-sensitive diazo resin and a mordant for an anionic dye.
Claim 9
Dependent Claim
38 words
A device according to claim 7 wherein said diazo resin comprises a repeating unit of the formula: ##STR3## wherein: J represents the atoms necessary to form a recurring unit in a polymer backbone and X.sup.⊖ is an anion.
Claim 10
Dependent Claim
108 words
A device according to claim 7 wherein said mordant is a vinylbenzyl quaternary ammonium polymeric mordant which comprises a repeating unit of the formula: ##STR4## wherein: R 1 and R 2 are the same or different and are aryl, aralkyl or alkaryl having from 6 to about 20 carbon atoms or an alkyl group having from 1 to about 10 carbon atoms; R 3 and R 4 are either both hydrogen or, together with the carbon atom to which they are attached, form a saturated, unsaturated or aromatic ring or ring system containing from 5-10 carbon atoms; X.sup.⊖ is an anion; and n is 0, 1 or 2.
Claim 11
Dependent Claim
18 words
A device according to claim 1 wherein the dye-impermeable polymeric layers are less than about 1500 angstroms thick.
Claim 12
Dependent Claim
17 words
A device according to claim 1 wherein said sets of filter elements are red, green and blue.
Claim 13
Dependent Claim
30 words
A device according to claim 1 further comprising a layer of crosslinked polymer overcoating said color filter array, wherein said bonding pad areas are substantially free from said overcoat layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |