Patent US4564280A successfully refreshed from Google Patents.
US4564280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for developing resist film including a movable nozzle arm
Assignee: Fujitsu Ltd
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Filing: 1983-10-25
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Granted: 1986-01-14
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Expires: 2003-10-25
Abstract
Abstract An apparatus for developing a resist film coated on a rotatable base plate, comprising means for supporting and rotating the base plate and nozzle means for feeding a developer onto the resist film. The nozzle means comprises a nozzle arm extending over the base plate and having a plurality of nozzles arranged along the length of the nozzle arm. Disclosed also is a method for developing a resist film coated on a rotatable base plate with a developer fed from a plurality of nozzles arranged on a nozzle arm along the length of the nozzle arm. The method comprises feeding the developer from th respective nozzles onto the resist film while rotating the base plate and while scanning the nozzle arm over the resist film.
Inventors
- 👤 Yuji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:29
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3021; Y; Y10; Y10S; Y10S134/00; Y10S134/902
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
109 words
A method for developing a resist film coated on a rotatable base plate with a developer which is fed from a plurality of nozzles arranged on a nozzle arm along the length of the nozzle arm, said nozzle arm extending over the resist film, comprising feeding the developer from the respective nozzles onto the resist film while rotating the base plate and while scanning the nozzle arm in a plane parallel to the base plate, over the resist film so that the scan covers at least the surface area of the resist film between the axis of rotation of the base plate and the periphery of the resist film.
Claim 2
Independent Claim
109 words
A method for developing a resist film coated on a rotatable base plate with a developer which is fed from a plurality of nozzles arranged on a nozzle arm along the length of the nozzle arm, said nozzle arm extending over the resist film, comprising feeding the developer from the respective nozzles onto the resist film while rotating the base plate and while scanning the nozzle arm in a plane parallel to the base plate, over the resist film so that the scan covers at least the surface area of the resist film between the axis of rotation of the base plate and the periphery of the resist film.
Claim 3
Dependent Claim
19 words
A method according to claim 1, further comprising independently controlling the amount of developer fed from the respective nozzles.
Claim 4
Independent Claim
139 words
An apparatus for developing a resist film coated on a base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating said base plate, and a nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm means which extends over the base plate and a plurality of nozzles arranged along the length of said nozzle arm means, said nozzle arm means being movable over said base plate in a plane substantially parallel to the surface of the said base plate between a first position extending along the periphery of said base plate and a second position extending over the center of said base plate, wherein said plurality of nozzles feeds a developer onto said base plate as said nozzle arm means moves between the first and second positions.
Claim 5
Independent Claim
139 words
An apparatus for developing a resist film coated on a base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating said base plate, and a nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm means which extends over the base plate and a plurality of nozzles arranged along the length of said nozzle arm means, said nozzle arm means being movable over said base plate in a plane substantially parallel to the surface of the said base plate between a first position extending along the periphery of said base plate and a second position extending over the center of said base plate, wherein said plurality of nozzles feeds a developer onto said base plate as said nozzle arm means moves between the first and second positions.
Claim 6
Dependent Claim
28 words
An apparatus according to claim 3, further comprising means for moving the nozzle arm means between the axis of rotation of the base plate and the periphery thereof.
Claim 7
Dependent Claim
21 words
An apparatus according to claim 3, further comprising means for independently controlling the amount of developer fed from the respective nozzles.
Claim 8
Dependent Claim
20 words
An apparatus according to claim 3, wherein said nozzles are arranged equidistantly along the length of the nozzle arm means.
Claim 9
Dependent Claim
32 words
An apparatus according to claim 3, wherein said nozzles are arranged so that the distance between adjacent nozzles is less the nearer these nozzles are to the periphery of the resist film.
Claim 10
Dependent Claim
12 words
An apparatus according to claim 3, said nozzles comprising indentical developer-dropping nozzles.
Claim 11
Dependent Claim
15 words
An apparatus according to claim 3, wherein said nozzles comprise at least one spray nozzle.
Claim 12
Independent Claim
81 words
An apparatus for developing a resist film coated on a rotatable base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating the base plate, nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm which extends over the base plate and which has a plurality of nozzles arranged along the length of the nozzle arm, and means for independently controlling the amount of developer fed from the respective nozzles.
Claim 13
Independent Claim
81 words
An apparatus for developing a resist film coated on a rotatable base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating the base plate, nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm which extends over the base plate and which has a plurality of nozzles arranged along the length of the nozzle arm, and means for independently controlling the amount of developer fed from the respective nozzles.
Claim 14
Independent Claim
94 words
An apparatus for developing a resist film coated on a rotatable base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating the base plate, and nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm which extends over the base plate and which has a plurality of nozzles arranged along the length of the nozzle arm, wherein said nozzles are arranged so that the distance between adjacent nozzles is less the nearer these nozzles are to the periphery of the resist film.
Claim 15
Independent Claim
94 words
An apparatus for developing a resist film coated on a rotatable base plate, the apparatus comprising means for rotatably supporting the base plate, means for rotating the base plate, and nozzle means for feeding a developer onto the resist film, said nozzle means comprising a nozzle arm which extends over the base plate and which has a plurality of nozzles arranged along the length of the nozzle arm, wherein said nozzles are arranged so that the distance between adjacent nozzles is less the nearer these nozzles are to the periphery of the resist film.
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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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |