US4425416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color filter and method for manufacturing the same
Assignee: Panasonic Holdings Corp
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Filing: 1982-04-13
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Granted: 1984-01-10
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Expires: 2002-04-13
Abstract
Abstract The invention provides a novel color filter used for an image pickup device for a color TV receiver and a method for manufacturing the color filter. More particularly, transparent layers to adhere color pattern layers to each other are not formed below second and third color pattern layers. Meanwhile, the surfaces of the precolored resin layers are exposed to a plasma atmosphere so that surfaces of color pattern layers are polymerized to form intermediate polymerized layers to separate the precolored resin layers. Therefore, blurs are eliminated from the second and third color pattern layers. Further, adhesion of the precolored resin layers is great.
Inventors
- 👤 Kazufumi Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/0035; G03F7/0005; G03F7/0007; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
96 words
A color filter having different discrete adjacent colored areas formed on a substrate to form color patterns on the substrate comprising a first pattern of a dyed resist formed on said substrate with a surface layer only of said dyed resist having been formed into a polymeric film by exposing to a plasma gas, and a second and subsequent patterns of a number equal to the number of colors used of dyed resists serially formed on said substrate and each having a surface layer only formed into a polymeric film by exposing to a plasma gas.
Claim 2
Dependent Claim
96 words
A color filter having different discrete adjacent colored areas formed on a substrate to form color patterns on the substrate comprising a first pattern of a dyed resist formed on said substrate with a surface layer only of said dyed resist having been formed into a polymeric film by exposing to a plasma gas, and a second and subsequent patterns of a number equal to the number of colors used of dyed resists serially formed on said substrate and each having a surface layer only formed into a polymeric film by exposing to a plasma gas.
Claim 3
Dependent Claim
14 words
A color filter according to claim 1, wherein said substrate comprises a transparent plate.
Claim 4
Dependent Claim
17 words
A color filter according to claim 1, wherein said substrate comprises a solid state image pickup element.
Claim 5
Dependent Claim
15 words
A color filter according to claim 1, wherein each of said polymeric films is transparent.
Claim 6
Dependent Claim
20 words
A color filter according to claim 1, wherein a black line is drawn between color regions of said color patterns.
Claim 7
Independent Claim
112 words
A method for manufacturing a color filter comprising: a first step of coating a sensitizer on a substrate to form a sensitizer film, exposing said sensitizer film to light using a mask, developing said sensitizer film, and forming a first pattern of said sensitizer film; a second step of dyeing said first pattern by a predetermined dye; a third step of exposing said first pattern dyed by said predetermined dye to a plasma gas to form a polymeric film by a chemical reaction on a surface layer of said first pattern; and a fourth step of repeating a plurality of times the first to third steps and forming desired subsequent color patterns.
Claim 8
Independent Claim
112 words
A method for manufacturing a color filter comprising: a first step of coating a sensitizer on a substrate to form a sensitizer film, exposing said sensitizer film to light using a mask, developing said sensitizer film, and forming a first pattern of said sensitizer film; a second step of dyeing said first pattern by a predetermined dye; a third step of exposing said first pattern dyed by said predetermined dye to a plasma gas to form a polymeric film by a chemical reaction on a surface layer of said first pattern; and a fourth step of repeating a plurality of times the first to third steps and forming desired subsequent color patterns.
Claim 9
Dependent Claim
13 words
A method according to claim 6, wherein said substrate comprises a transparent plate.
Claim 10
Dependent Claim
16 words
A method according to claim 6, wherein said substrate comprises a solid state image pickup element.
Claim 11
Dependent Claim
14 words
A method according to claim 1, wherein the chemical reaction is a polymerization reaction.
Claim 12
Dependent Claim
24 words
A method according to claim 6, wherein the plasma gas is formed by ionizing at least one of a fluorocarbon and an inert gas.
Claim 13
Dependent Claim
25 words
A method according to claim 6, wherein a black line is drawn between color regions of the color patterns of said first and subsequent patterns.
Claim 14
Dependent Claim
15 words
A color filter according to claim 1, wherein the number of colors used is three.
Claim 15
Dependent Claim
19 words
A color filter according to claim 1, wherein the plasma gas is a fluorocarbon gas or an inert gas.
Claim 16
Dependent Claim
23 words
A color filter according to claim 1, further comprising a protective layer of a polymeric film formed over all of said color patterns.
Claim 17
Dependent Claim
24 words
A method according to claim 6, wherein said first to third steps are repeated twice to form a total of three desired color patterns.
Claim 18
Dependent Claim
18 words
A method according to claim 6, wherein said plasma gas is a fluorocarbon gas or an inert gas.
Claim 19
Dependent Claim
22 words
A method according to claim 6, further comprising a fifth step of forming a protective layer over all of the color patterns.
Claim 20
Dependent Claim
20 words
A color filter according to claim 1, wherein said first and second subsequent patterns are formed directly on said substrate.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |