US4812387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming functional films on fine transparent electric conductive circuit pattern and spaces thereof
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1987-04-14
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Granted: 1989-03-14
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Expires: 2007-04-14
Abstract
Abstract The present invention is for a method of forming a coating film used for filling the space between the color stripes for a color filter which is used for colorization of a liquid crystal display. In particular, the light-shielding electrodeposition coating is first formed in a transparent electric conductive circuit pattern so as to suppress the reaction of a photo-setting material against light which is to be applied to the electrodeposition coating.
Inventors
- 👤 Tameyuki Suzuki
- 👤 Junichi Yasukawa
- 👤 Toyokazu Nomura
- 👤 Kazuo Toda
- 👤 Takuro Kamakura
- 👤 Toshiaki Ota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:51
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
A method of forming a first functional film on an electroconductive circuit pattern on a transparent base board, said base board having said pattern on one surface thereof, and a second functional film covering the spaces about the pattern which comprises: forming a thin light-shielding first functional film on the pattern and curing the film by high polymer electrode deposition coating, said film functioning as a color filter; applying a photo-curable, light-shielding, second functional film to the surface of the transparent base board having the first functional film thereon; exposing the surface of the transparent base board opposite to that having the functional films coated thereon to light and curing the portions of the photo-curable, second functional film covering the spaces about the pattern; and removing the uncured portions of the second functional film over the light-shielding, first functional film.
Claim 2
Independent Claim
140 words
A method of forming a first functional film on an electroconductive circuit pattern on a transparent base board, said base board having said pattern on one surface thereof, and a second functional film covering the spaces about the pattern which comprises: forming a thin light-shielding first functional film on the pattern and curing the film by high polymer electrode deposition coating, said film functioning as a color filter; applying a photo-curable, light-shielding, second functional film to the surface of the transparent base board having the first functional film thereon; exposing the surface of the transparent base board opposite to that having the functional films coated thereon to light and curing the portions of the photo-curable, second functional film covering the spaces about the pattern; and removing the uncured portions of the second functional film over the light-shielding, first functional film.
Claim 3
Dependent Claim
66 words
A method according to claim 1 wherein the cured, light-shielding first functional film on the pattern shields not less than 70% of the light to which it is exposed when the surface of the transparent base board opposite to that having the functional films coated thereon is exposed to light to cure the portions of the photocurable, second functional film covering the spaces about the pattern.
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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |