Patent US5403616A successfully refreshed from Google Patents.
US5403616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming patterned transparent conducting film
Assignee: Panasonic Holdings Corp
•
Filing: 1994-06-06
•
Granted: 1995-04-04
•
Expires: 2014-06-06
Abstract
Abstract Printing is conducted at the transparent conducting film unnecessary portion on a substrate 1 with a masking ink having a higher thermal decomposition temperature than that of the transparent conducting film forming composition, and the ink is dried and cured by heat or light to form a masking pattern 2. The portion where a transparent conducting film is to be formed is preferably subjected to ozone cleaning and then coated with a transparent conducting film forming composition comprising an indium compound and/or a tin compound and a solvent to form a transparent conducting film forming composition layer 3. The thus worked substrate is subjected to a heat treatment, causing thermal decomposition of the masking pattern 2 after formation of a transparent conducting film. Then the residues of the masking ink and the transparent conducting film are removed to finally obtain a desired patterned transparent conducting film 4.
Inventors
- 👤 Akiyoshi Hattori
- 👤 Yoshihiro Hori
- 👤 Akihiko Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:14
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1258; H05B; H05B3/00; H05B3/84; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439; H05B2203/00; H05B2203/017; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0166; H05K2201/03; H05K2201/032; H05K2201/0326; H05K2203/00; H05K2203/05; H05K2203/0562; H05K2203/0568; H05K2203/12; H05K2203/121; H05K3/105
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
132 words
A process for forming a patterned transparent conducting film comprising the steps of: (a) printing a masking ink on portions of a substrate at which no transparent conducting film forming composition is to be coated, said masking ink comprising at least a heat- or light-curing compound having a functional group, (b) curing the masking ink by heat or light so as to have, after curing, a higher decomposition temperature than that of the transparent conducting film forming composition, (c) coating the transparent conducting film forming composition on said substrate, said transparent conducting film forming composition comprising an indium compound, a tin compound, and a solvent, said tin compound being stannous oxalate, (d) subjecting said substrate to a heat treatment, and (e) removing residues of said masking ink and said transparent conducting film.
Claim 2
Dependent Claim
132 words
A process for forming a patterned transparent conducting film comprising the steps of: (a) printing a masking ink on portions of a substrate at which no transparent conducting film forming composition is to be coated, said masking ink comprising at least a heat- or light-curing compound having a functional group, (b) curing the masking ink by heat or light so as to have, after curing, a higher decomposition temperature than that of the transparent conducting film forming composition, (c) coating the transparent conducting film forming composition on said substrate, said transparent conducting film forming composition comprising an indium compound, a tin compound, and a solvent, said tin compound being stannous oxalate, (d) subjecting said substrate to a heat treatment, and (e) removing residues of said masking ink and said transparent conducting film.
Claim 3
Dependent Claim
24 words
The process according to claim 1, wherein the masking ink contains at least one of epoxy acrylate, epoxy methacrylate, urethane acrylate and urethane methacrylate.
Claim 4
Dependent Claim
26 words
The process according to claim 1, wherein the masking ink contains carbon powder selected from the group consisting of natural graphite, synthetic graphite and amorphous carbon.
Claim 5
Dependent Claim
21 words
The process according to claim 3, wherein the carbon powder content in the masking ink is 30 wt % or less.
Claim 6
Dependent Claim
20 words
The process according to claim 1, wherein the solvent in the transparent conducting film forming composition is an organic solvent.
Claim 7
Dependent Claim
36 words
The process according to claim 1, wherein step (d) is carried out at a temperature above the decomposition of the transparent conducting film forming composition and the cured masking ink and below a substrate deforming temperature.
Claim 8
Dependent Claim
15 words
The process according to claim 1, wherein step (e) is carried out by physical means.
Claim 9
Dependent Claim
139 words
A process for forming a patterned transparent conducting film comprising the steps of: (a) printing a masking ink on portions of a substrate at which no transparent conducting film forming composition is to be coated, said masking ink comprising at least a heat-or light-curing compound having a functional group, (b) curing the masking ink by heat or light so as to have, after curing, a higher decomposition temperature than that of the transparent conducting film forming composition, (c) subjecting the printed substrate to ozone cleaning, (d) coating the transparent conducting film forming composition on said substrate, said transparent conducting film forming composition comprising an indium compound, a tin compound, and a solvent, said tin compound being stannous oxalate, (e) subjecting said substrate to a heat treatment, and (f) removing residues of said masking ink and said transparent conducting film.
Claim 10
Dependent Claim
139 words
A process for forming a patterned transparent conducting film comprising the steps of: (a) printing a masking ink on portions of a substrate at which no transparent conducting film forming composition is to be coated, said masking ink comprising at least a heat-or light-curing compound having a functional group, (b) curing the masking ink by heat or light so as to have, after curing, a higher decomposition temperature than that of the transparent conducting film forming composition, (c) subjecting the printed substrate to ozone cleaning, (d) coating the transparent conducting film forming composition on said substrate, said transparent conducting film forming composition comprising an indium compound, a tin compound, and a solvent, said tin compound being stannous oxalate, (e) subjecting said substrate to a heat treatment, and (f) removing residues of said masking ink and said transparent conducting film.
Claim 11
Dependent Claim
27 words
The process according to claim 8, wherein step (b) comprises curing the masking ink by light and steps (b) and (c) are performed at the same time.
Claim 12
Dependent Claim
24 words
The process according to claim 8, wherein the masking ink contains at least one of epoxy acrylate, epoxy methacrylate, urethane acrylate and urethane methacrylate.
Claim 13
Dependent Claim
26 words
The process according to claim 8, wherein the masking ink contains carbon powder selected from the group consisting of natural graphite, synthetic graphite and amorphous carbon.
Claim 14
Dependent Claim
21 words
The process according to claim 11, wherein the carbon powder content in the masking ink is 30 wt % or less.
Claim 15
Dependent Claim
20 words
The process according to claim 8, wherein the solvent in the transparent conducting film forming composition is an organic solvent.
Claim 16
Dependent Claim
36 words
The process according to claim 8, wherein step (e) is carried out at a temperature above the decomposition of the transparent conducting film forming composition and the cured masking ink and below a substrate deforming temperature.
Claim 17
Dependent Claim
15 words
The process according to claim 8, wherein step (f) is carried out by physical means.
References Cited (Backward Citations)
US4187340A
Cited
FR2371241A1
Cited
GB2068834A
Cited
EP0050415A1
Cited
US4420500A
Cited
EP0106628A1
Cited
US4924800A
Cited
US4789620A
Cited
EP0395411A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |