US4258265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam exposing apparatus
Assignee: Toshiba Corp
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Filing: 1979-01-22
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Granted: 1981-03-24
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Expires: 1999-01-22
Abstract
Abstract Electron beam exposing apparatus includes first and second apertures to pass an electron beam and, a deflection device to change the incident position of the electron beam onto the second aperture to control a projected pattern configuration.
Inventors
- 👤 Masahiko Sumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:30
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/147; H01J37/1471; H01J37/30; H01J37/3002; H01J37/3007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
183 words
An electronic beam exposing apparatus comprising: a beam source for emitting electron beams; first beam shaping means for shaping said electron beams into a first pattern, said first beam shaping means comprising a first beam restricting aperture and first means for passing said electron beams through said first aperture such that said first pattern is defined by the beams passing through said first aperture; second beam-shaping means for shaping said first pattern of electron beams into a second pattern, said second beam-shaping means comprising a second beam restricting aperture and second means for projecting an image of said first pattern against said second aperture, such that said second pattern is defined by the beams passing through said first and second apertures; drive means for moving a beam incident position relative to the second aperture of the second beam-shaping means to permit the second beam pattern to be regulated by the second aperture; and; means for illuminating focusing the second beam pattern from the second aperture onto an object to be exposed; wherein said first and second beam-shaping means, each, are an L-shaped plate.
Claim 2
Dependent Claim
183 words
An electronic beam exposing apparatus comprising: a beam source for emitting electron beams; first beam shaping means for shaping said electron beams into a first pattern, said first beam shaping means comprising a first beam restricting aperture and first means for passing said electron beams through said first aperture such that said first pattern is defined by the beams passing through said first aperture; second beam-shaping means for shaping said first pattern of electron beams into a second pattern, said second beam-shaping means comprising a second beam restricting aperture and second means for projecting an image of said first pattern against said second aperture, such that said second pattern is defined by the beams passing through said first and second apertures; drive means for moving a beam incident position relative to the second aperture of the second beam-shaping means to permit the second beam pattern to be regulated by the second aperture; and; means for illuminating focusing the second beam pattern from the second aperture onto an object to be exposed; wherein said first and second beam-shaping means, each, are an L-shaped plate.
Claim 3
Dependent Claim
22 words
An electronic beam exposing apparatus according to claim 1 in which said drive means is deflection means for permitting a beam deflection.
Claim 4
Dependent Claim
57 words
An electronic beam exposing apparatus according to claim 2, in which said deflection means includes a first deflection device disposed between the first and second beam-shaping means to deflect the beam in a first direction, and a second deflection device disposed to permit the beam to be deflected in a second direction normal to said first direction.
References Cited (Backward Citations)
US3876883A
Cited
US4145597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |