Patent US3177430A successfully refreshed from Google Patents.
US3755671A
Expired / Lapsed
US
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Method of providing a semiconductor body with piezoelectric properties
Assignee: RCA Corp
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Filing: 1972-09-29
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Granted: 1973-08-28
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Expires: 1992-09-29
Abstract
Abstract Semiconductor crystalline materials which lack a center of symmetry but which contain mobile carriers are provided with piezoelectric properties by bombarding the materials with electrons. A body of such semiconductor material can be bombarded with electrons on selected portions thereof so that the unbombarded portions of the body have semiconductor properties and the bombarded portions have piezoelectric properties.
Inventors
- 👤 H Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:54
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10D; H10D48/00; H10D48/50; H10N; H10N30/00; H10N30/01; H10N30/04; H10N39/00; H01; H01S; H01S5/00; H01S5/06; H01S5/0607; H01S5/10; H01S5/12; H01S5/1234; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
A method of providing piezoelectric properties in a body of a crystalline semiconductor material which lacks a center of symmetry but which contains screening mobile electrons said method comprising bombarding a portion of said body with electrons until the mobile electrons in the bombarded portion of the body are sufficiently compensated to stimulate the latent piezoelectricity in said portion of the body.
Claim 2
Independent Claim
62 words
A method of providing piezoelectric properties in a body of a crystalline semiconductor material which lacks a center of symmetry but which contains screening mobile electrons said method comprising bombarding a portion of said body with electrons until the mobile electrons in the bombarded portion of the body are sufficiently compensated to stimulate the latent piezoelectricity in said portion of the body.
Claim 3
Dependent Claim
22 words
The method in accordance with claim 1 in which the body is of a group III-V compound or mixture of said compounds.
Claim 4
Dependent Claim
15 words
The method in accordance with claim 2 in which the body contains a conductivity modifier.
Claim 5
Dependent Claim
31 words
The method in accordance with claim 1 wherein selected portions of the body are bombarded with electrons to provide a body having portions with semiconductive properties and portions with piezoelectric properties.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |