US4383017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing method of stripe filter
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1981-07-01
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Granted: 1983-05-10
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Expires: 2001-07-01
Abstract
Abstract A method of manufacturing a stripe filter for optical usages, the method being based on a partially hardening of a liquid colored composition spread on a transparent base plate together with a partially eliminating of portions remaining soluble after the hardening operation, wherein a series of these operations is repeated with said compositions respectively assuming different colors.
Inventors
- 👤 Shimizu Hirofumi
- 👤 Yamano Akira
- 👤 Ikeuchi Shinzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:56
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; H; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/331
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
A method of manufacturing a stripe filter having a transparent base plate and fine stripes formed thereon and assuming different colors, said method comprising a repeated series of operations including (a) applying onto and drying on the base plate a liquid colored composition which contains at least a dyestuff assuming a predetermined color, a coating material, a dissolution accelerator for the dyestuff and a photo-sensitive hardener therefor, (b) exposing predetermined portions of said composition on the plate by means of a mask having a predetermined pattern of transmitting zones in such a degree as to harden said portions, thereby forming a group of unsoluble stripes assuming said predetermined color, (c) eliminating other portions remaining unhardened by means of a solvent for said coating material, thereby said unhardened portions being dissolved into said solvent, and repeating the series of operations for required times, each time using a different liquid composition assuming a different color being used and the number of times being determined in accordance with the number of said groups.
Claim 2
Independent Claim
170 words
A method of manufacturing a stripe filter having a transparent base plate and fine stripes formed thereon and assuming different colors, said method comprising a repeated series of operations including (a) applying onto and drying on the base plate a liquid colored composition which contains at least a dyestuff assuming a predetermined color, a coating material, a dissolution accelerator for the dyestuff and a photo-sensitive hardener therefor, (b) exposing predetermined portions of said composition on the plate by means of a mask having a predetermined pattern of transmitting zones in such a degree as to harden said portions, thereby forming a group of unsoluble stripes assuming said predetermined color, (c) eliminating other portions remaining unhardened by means of a solvent for said coating material, thereby said unhardened portions being dissolved into said solvent, and repeating the series of operations for required times, each time using a different liquid composition assuming a different color being used and the number of times being determined in accordance with the number of said groups.
Claim 3
Dependent Claim
43 words
A method of manufacturing a stripe filter according to claim 1, wherein each of said compositions assumes respectively one of three optical primary colors, and said repetition number is set three for arranging said stripes in parallel with and close to each other.
Claim 4
Dependent Claim
43 words
A method of manufacturing a stripe filter according to claim 1, wherein each of said compositions assumes respectively one of two colors which are mixed to assume another predetermined color, and said repetition number is set two for crossing said stripes each other.
Claim 5
Dependent Claim
24 words
A method of manufacturing a stripe filter according to claim 1, wherein a transparent intermediate layer is interposed between the groups of said stripes.
Claim 6
Dependent Claim
27 words
A method of manufacturing a stripe filter according to claim 4, wherein said stripes assuming different colors are arranged in parallel with and close to each other.
Claim 7
Dependent Claim
32 words
A method of manufacturing a stripe filter according to claim 4, wherein two groups of said stripes assuming different colors are crossed each other to assume another predetermined color at crossing portions.
Claim 8
Dependent Claim
27 words
A method of manufacturing a stripe filter according to claim 5, wherein said colors are red, blue and green which correspond to the three optical primary colors.
Claim 9
Dependent Claim
19 words
A method of manufacturing a stripe filter according to claim 5, wherein said colors are cyanic, green and magenta.
Claim 10
Dependent Claim
19 words
A method of manufacturing a stripe filter according to claim 5, wherein said colors are cyanic, green and colorless.
Claim 11
Dependent Claim
18 words
A method of manufacturing a stripe filter according to claim 6, wherein said colors are cyanic and yellow.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |