US5453394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing semiconductor substrate by bringing first and second substrates in contact
Assignee: Canon Inc
•
Filing: 1993-01-28
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Granted: 1995-09-26
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Expires: 2013-01-28
Abstract
Abstract A process for preparing a semiconductor substrate comprises bringing a first substrate provided with at least one of boron and phosphorus on the surface of an insulating layer formed on the surface of the substrate in contact with a second substrate, and integrating both of the substrates by a heat treatment.
Inventors
- 👤 Takao Yonehara
- 👤 Kenji Yamagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:05
CPC Classifications
H; H10; H10P; H10P50/00; H10P50/60; H10P50/64; H10P50/642; H10P90/00; H10P90/19; H10P90/1904; H10P90/1906; H10P90/1914; H10P90/1922; H10W; H10W10/00; H10W10/10; H10W10/181; Y; Y10; Y10S; Y10S148/00; Y10S148/012; Y10S438/00; Y10S438/96
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A process for preparing a semiconductor substrate comprising: providing a first substrate having a semiconductor layer and an insulating layer; forming a first layer comprising an element constituting said insulating layer and at least one of boron and phosphorus on the surface of said insulating layer; contacting the first layer with a second substrate; and integrating both of the substrates by a heat treatment to form the semiconductor substrate, wherein the boron and/or the phosphorus are provided on the surface of the insulating layer by ion implantation.
Claim 2
Dependent Claim
87 words
A process for preparing a semiconductor substrate comprising: providing a first substrate having a semiconductor layer and an insulating layer; forming a first layer comprising an element constituting said insulating layer and at least one of boron and phosphorus on the surface of said insulating layer; contacting the first layer with a second substrate; and integrating both of the substrates by a heat treatment to form the semiconductor substrate, wherein the boron and/or the phosphorus are provided on the surface of the insulating layer by ion implantation.
Claim 3
Dependent Claim
84 words
A process for preparing a semiconductor substrate which comprises bringing a first substrate and a second substrate each provided with at least one of boron and phosphorus on the surface of an insulating layer on the surface of the substrate in contact with each other so that the insulating layers are in contact with each other, and integrating both of the substrates by a heat treatment, wherein the boron and/or the phosphorus are provided on the surface of the insulating layer by ion implantation.
Claim 4
Dependent Claim
84 words
A process for preparing a semiconductor substrate which comprises bringing a first substrate and a second substrate each provided with at least one of boron and phosphorus on the surface of an insulating layer on the surface of the substrate in contact with each other so that the insulating layers are in contact with each other, and integrating both of the substrates by a heat treatment, wherein the boron and/or the phosphorus are provided on the surface of the insulating layer by ion implantation.
Claim 5
Dependent Claim
32 words
A process according to claims 1 or 2, wherein the first substrate and the second substrate are single element semiconductors, compound semiconductors or one of the first and second substrates is glass.
Claim 6
Dependent Claim
23 words
A process according to claim 1, wherein the thickness of said first layer is in a range of from 0.1 to 1.0 μm.
Claim 7
Dependent Claim
30 words
A process according to claim 1 or 2, wherein the boron and/or the phosphorus are ion implanted in an amount ranging from 1×10 20 to 5×10 21 cm -3 .
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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) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |