US5154333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jaw cleaving device
Assignee: International Business Machines Corp
•
Filing: 1991-10-30
•
Granted: 1992-10-13
•
Expires: 2011-10-30
Abstract
Abstract An apparatus and method for cleaving GaAs laser bars from a cell utilizes a first jaw applied to one end of a laser bar to propagate a cleavage and a second jaw applied to an opposite end which provides a biasing force that assures separation of the bar from the cell along the same crystallographic plane. The apparatus may be used in an ultra-high vacuum environment and allows handling of the bars without contacting the vital areas of the top surfaces or facet faces. The apparatus precisely locates bars after cleavage so that they may be further processed.
Inventors
- 👤 Tibor L. Bauer
- 👤 William A. Cavaliere
- 👤 David C. Linnell
- 👤 Raymond R. Ruckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
B; B28; B28D; B28D5/00; B28D5/0005; B28D5/0011; B28D5/0017; H; H01; H01S; H01S5/00; H01S5/02; H01S5/0201; H01S5/0202; H01S5/028; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325; Y10T225/35; Y10T225/357
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
A method of cleaving a semiconductor bar from a cell, comprising: positioning a cell underneath a pair of jaws which are spaced apart to contact said cell in non-vital contact areas on a first side of said cell, a first of said pair of jaws being fixed and a second of said pair of jaws being slidable and biased by a weight; supporting a bar section to be cleaved from a cell at a position in line with said pair of jaws and spaced therefrom; placing said pair of jaws in contact with said non-vital contact areas on said cell; and pivoting a remainder section of said cell relative to said bar section of said cell when said jaws are in contact with said bar section.
Claim 2
Independent Claim
126 words
A method of cleaving a semiconductor bar from a cell, comprising: positioning a cell underneath a pair of jaws which are spaced apart to contact said cell in non-vital contact areas on a first side of said cell, a first of said pair of jaws being fixed and a second of said pair of jaws being slidable and biased by a weight; supporting a bar section to be cleaved from a cell at a position in line with said pair of jaws and spaced therefrom; placing said pair of jaws in contact with said non-vital contact areas on said cell; and pivoting a remainder section of said cell relative to said bar section of said cell when said jaws are in contact with said bar section.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein said steps of positioning, supporting, placing and pivoting are all performed in an ultra-high vacuum environment.
Claim 4
Dependent Claim
32 words
The method of claim 1 further comprising the steps of scribing a cell in a non-vital contact area with a scribe line, said scribe line defining an area for initiating a cleavage.
Claim 5
Dependent Claim
29 words
The method of claim 1 wherein said steps of positioning and supporting precisely locate said bar section of said cell at a known location after said step of pivoting.
Claim 6
Dependent Claim
28 words
The method of claim 4 further comprising the steps of retrieving said bar section from said known location and applying an antioxidant barrier layer to said bar section.
Claim 7
Independent Claim
152 words
An apparatus for cleaving a semiconductor bar from a cell, comprising: positioning means for positioning a cell underneath a pair of jaws, said pair of jaws being spaced apart to contact said cell in non-vital contact areas on a first side of said cell; supporting means for supporting a bar section to be cleaved from a cell positioned in line with said pair of jaws and spaced therefrom; placing means for placing said pair of jaws in contact with said non-vital contact areas, a first of said pair of jaws being fixed relative to said placing means, a second of said pair of jaws being movable relative to said placing means, said second of said pair of jaws being biased by a weight; and pivoting means for pivoting a remainder section of a cell relative to a bar section of said cell after said jaws are in contact with said bar section.
Claim 8
Independent Claim
152 words
An apparatus for cleaving a semiconductor bar from a cell, comprising: positioning means for positioning a cell underneath a pair of jaws, said pair of jaws being spaced apart to contact said cell in non-vital contact areas on a first side of said cell; supporting means for supporting a bar section to be cleaved from a cell positioned in line with said pair of jaws and spaced therefrom; placing means for placing said pair of jaws in contact with said non-vital contact areas, a first of said pair of jaws being fixed relative to said placing means, a second of said pair of jaws being movable relative to said placing means, said second of said pair of jaws being biased by a weight; and pivoting means for pivoting a remainder section of a cell relative to a bar section of said cell after said jaws are in contact with said bar section.
Claim 9
Dependent Claim
36 words
An apparatus as recited in claim 6 further comprising a weight for holding a cell in position, said weight having an opening which prevents contact with vital contact areas on a first side of said cell.
Claim 10
Dependent Claim
20 words
An apparatus as recited in claim 6 further comprising a means for preventing lateral movement of said pair of jaws.
Claim 11
Dependent Claim
25 words
An apparatus as recited in claim 6 wherein said second of said pair of jaws is longer than said first of said pair of jaws.
Claim 12
Dependent Claim
20 words
An apparatus as recited in claim 6 wherein said positioning means operates on a platform connected to said pivoting means.
Claim 13
Dependent Claim
25 words
An apparatus as recited in claim 6 wherein said positioning means and said supporting means serve to precisely locate a cleaved bar from a cell.
References Cited (Backward Citations)
US3687345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |