US4687930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion beam apparatus
Assignee: Hitachi Ltd
•
Filing: 1985-05-20
•
Granted: 1987-08-18
•
Expires: 2005-05-20
Abstract
Abstract The surface of a specimen such as a semiconductor wafer is processed and analyzed by the irradiator of the surface with an ion beam. The zone of the specimen to be processed and analyzed is kept by heating at a temperature higher than the melting point of an element or compound forming the ion species used for the irradiation. The means used for this heating may be an electron beam source, a light source, a resistance heating source, or a high-frequency heating source.
Inventors
- 👤 Hifumi Tamura
- 👤 Shigehiko Yamamoto
- 👤 Hiroyasu Shichi
- 👤 Toru Ishitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/3002; H01J37/02; H01J49/00; H01J49/02; H01J49/10; H01J49/14; H01J49/142
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
An ion beam apparatus for at least one of processing and analyzing a specimen comprising, ion beam generating means for generating an ion beam and for irradiating the specimen with the ion beam, and means for heating the specimen to at least a predetermined temperature above the melting point of one of an element and compound forming the ion beam, whereby the heating of the specimen to at least the predetermined temperature enables prevention of a deposition of an ion species of the ion beam on a surface of the specimen and enables high accuracy of at least one of processing and analysis of the specimen.
Claim 2
Dependent Claim
106 words
An ion beam apparatus for at least one of processing and analyzing a specimen comprising, ion beam generating means for generating an ion beam and for irradiating the specimen with the ion beam, and means for heating the specimen to at least a predetermined temperature above the melting point of one of an element and compound forming the ion beam, whereby the heating of the specimen to at least the predetermined temperature enables prevention of a deposition of an ion species of the ion beam on a surface of the specimen and enables high accuracy of at least one of processing and analysis of the specimen.
Claim 3
Dependent Claim
27 words
An ion beam apparatus according to claim 1, wherein the heating means includes an electron beam source for irradiating the specimen so as to heat the specimen.
Claim 4
Dependent Claim
21 words
An ion beam apparatus according to claim 1, wherein the heating means includes a resistance heating means for heating the specimen.
Claim 5
Dependent Claim
22 words
An ion beam apparatus according to claim 1, further comprising means for introducing an activated gas into the region of the specimen.
Claim 6
Dependent Claim
82 words
An ion beam apparatus according to claim 1, wherein the ion beam generating means generates a beam of any one ion selected from the group consisting of Ga+, Cs+, and Ba+ as the ion beam, and further comprising means for introducing a gas into the region of the specimen, the gas introducing means introducing any one gas selected from the group consisting of O 2 , N 2 , Cl 2 , F 2 , and compounds thereof as the one gas.
Claim 7
Dependent Claim
23 words
An ion beam apparatus according to claim 1, further comprising analyzing means for analyzing at least the secondary ions emitted from the specimen.
References Cited (Backward Citations)
US3930155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |