US4847178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive photosensitive o-quinone diazide composition with benzotriazole carboxylic acid or alkyl ester
Assignee: Tokyo Ohka Kogyo Co Ltd
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Filing: 1987-04-30
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Granted: 1989-07-11
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Expires: 2007-04-30
Abstract
Abstract A positive type photosensitive composition capable of improving the drawback in the conventional positive type photosensitive resin composition, improving adhesion between the positive type photoresist and the substrate and improving developability is provided by incorporating benzotriazole carboxylic acids in the positive type photoresist.
Inventors
- 👤 Hiroshi Komano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:11
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/085; G03C; G03C1/00; G03C1/72; G03F7/022; G03F7/0226; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0076
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A positive type photosensitive resin composition, comprising a material comprising a photosensitive amount of an o-quinone diazide group-containing compound wherein the o-quinone diazide group decomposes when subjected to irradiation with actinic rays; and about 0.05 to 5 wt % with respect to the total solid content of the composition of a benzotriazole carboxylic acid or aliphatic ester compound of the formula ##STR3## wherein R is H or a (C 1 -C 3 ) aliphatic hydrocarbon residue.
Claim 2
Dependent Claim
76 words
A positive type photosensitive resin composition, comprising a material comprising a photosensitive amount of an o-quinone diazide group-containing compound wherein the o-quinone diazide group decomposes when subjected to irradiation with actinic rays; and about 0.05 to 5 wt % with respect to the total solid content of the composition of a benzotriazole carboxylic acid or aliphatic ester compound of the formula ##STR3## wherein R is H or a (C 1 -C 3 ) aliphatic hydrocarbon residue.
Claim 3
Dependent Claim
34 words
The resin composition of claim 1, wherein the benzotriazole carboxylic acid compound is present in an amount of about 0.2 to 2 wt % with respect to the total solid content of the composition.
Claim 4
Dependent Claim
26 words
The resin composition of claim 1, wherein the benzotriazole carboxylic acid compound is selected from the group consisting of 4-benzotriazole carboxylic acid and 5-benzotriazole carboxylic acid.
Claim 5
Dependent Claim
20 words
The resin composition of claim 1, wherein the benzotriazole carboxylic acid compound is an ester of a benzotriazole carboxylic acid.
Claim 6
Dependent Claim
27 words
The resin composition of claim 4, wherein the ester of the benzotriazole carboxylic acid is a (C 1 -C 3 ) alkyl ester of benzotriazole carboxylic acid.
Claim 7
Dependent Claim
28 words
The resin composition of claim 1, wherein the o-quinone diazide group-containing compound is selected from the group consisting of o-naphthoquinonediazide sulfonic acid ester and o-naphthoquinonediazide sulfonic acid amide.
Claim 8
Dependent Claim
30 words
The resin composition of claim 6, wherein the o-naphthoquinonediazide sulfonic acid ester is the esterification product of a compound having at least one phenolic hydroxyl group and o-naphthoquinonediazide sulfonic acid.
Claim 9
Dependent Claim
58 words
The resin composition of claim 7, wherein the compound having a phenolic hydroxyl group is selected from the group consisting of Novolak resin, alkyl esters of gallic acid, homopolymers of p-hydroxystyrene, condensates of pyrogallol and acetone, tetrahydroxybenzophenone, trihydroxybenzene, monoethers of trihydroxybenzene, 2,2',4,4'-tetrahydroxydiphenylmethane, 4,4'-dihydroxydiphenylpropane, 2,2'-dihydroxydinaphthylmethane, 4,4'-dihydroxydiphenyl sulfonfic acid, 2-hydroxyfluorene, 2-hydroxyphenanthrene, polyhydroxyanthraquinone, purpurogalline, purpurogallines and phenyl esters of 2,4,6-trihydroxybnezoic acid.
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) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |