US3601296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for breaking scribed slices of semiconductor material
Assignee: Texas Instruments Inc
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Filing: 1968-12-30
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Granted: 1971-08-24
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Expires: 1988-12-30
Abstract
Abstract A device for breaking scribed slices of semiconductor material to produce individual bars of the semiconductor material by moving a force applying member, the force exerted by which is predetermined, such as an adjustable spring biased roller, over a scribed slice of semiconductor material supported by a platen which preferably is covered with an elastomeric pad.
Inventors
- 👤 Eric G Pick
- 👤 Jerry B Medders
- 👤 Lawrence T Loftus Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:32
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0428; H10P95/00; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325; Y10T225/371; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
38 words
The device of claim 1 wherein said slice supporting member is a platen having a top planar surface; and said force applying element is a roller having a longitudinal axis parallel to the top surface of said platen.
Claim 2
Dependent Claim
45 words
The device of claim 2, including: means permitting upward movement of said roller when a force is exerted against the bottom thereof; and means for applying a biasing force against said roller tending to force said roller back to a predetermined distance above said platen.
Claim 3
Dependent Claim
18 words
The device of claim 2, including: a layer of resilient material positioned between the platen and the roller.
Claim 4
Dependent Claim
38 words
The device of claim 2, including: a layer of resilient material affixed to the platen to provide a planar surface parallel to the longitudinal axis of the roller upon which a slice of semiconductor material can be positioned.
Claim 5
Dependent Claim
51 words
The device of claim 2, including: means for sensing an externally applied downward force on the platen and generating a signal proportional to the magnitude; and means responsive to the signal generated by said sensing means for displaying visual indication of the magnitude of the force being applied to the platen.
Claim 6
Dependent Claim
51 words
The device of claim 2, including: means permitting upward movement of said roller when a force is exerted against the bottom thereof; means of applying a biasing force tending to force said roller back to the predetermined distance above said platen; and means for adjusting the magnitude of the biasing force.
Claim 7
Dependent Claim
45 words
The device of claim 7, including: means for sensing an externally applied downward force on the platen and generating a signal proportional to the magnitude thereto; and means responsive to the signal generated by said sensing means for displaying visual indication of the magnitude thereof.
Claim 8
Dependent Claim
57 words
The device of claim 2, including: means permitting upward movement of said roller when a force is exerted against the bottom thereof; means for applying a biasing force against said roller tending to force said roller back to a predetermined distance above said platen; and a layer of resilient material positioned between the platen and the roller.
Claim 9
Dependent Claim
48 words
The device of claim 9, including: means sensing any externally applied downward force on the platen and generating a signal proportional thereto; and means responsive to the signal generated by said sensing means for displaying visual indication of the magnitude of the force being applied to the platen.
Claim 10
Independent Claim
185 words
A device for breaking scribed slices of semiconductor material to produce individual bars of semiconductor material, which device comprises: a base; pedestals affixed to said base and positioned in a spaced apart relationship to define a gap Therebetween; a roller supported across the gap defined between the pedestals; means supported by each of said pedestals which rotatably support the ends of the roller; a semiconductor slice supporting platen positioned in said gap below said roller at a predetermined vertical distance therefrom and having a top planar surface which is parallel to the axis of the roller; means supported by said pedestals for adjusting the vertical height of each end of said roller relative to said platen; means for moving the platen relative to said roller so that a slice of semiconductor material supported by said platen will be broken along the lines scribed therein due to the compressive force applied thereto during movement of the roller relative to the platen; means permitting upward movement of said roller relative to said platen; and spring means urging said roller downwardly to the predetermined distance above said platen.
Claim 11
Dependent Claim
19 words
The device of claim 11, including: means for adjusting the force exerted by the spring means upon the roller.
Claim 12
Dependent Claim
33 words
The device of claim 12, including: an elastomeric pad supported on the top surface of said platen, the pad having a planar top surface which is parallel to the axis of said roller.
Claim 13
Dependent Claim
100 words
The device of claim 13, including: a strain gauge interposed between the top surface of said elastomeric pad and the top surface of said platen for sensing a force applied against the top surface of the pad and generating a signal proportioned to the force; means for amplifying the signal generated by the sensing means; means for comparing said amplified signal with predetermined maximum and predetermined minimum reference signals; and means for displaying a visual indication of the magnitude of the amplified signal when the sensing means exceeds the predetermined maximum signal or is less than the predetermined minimum signal.
Claim 14
Dependent Claim
139 words
The device of claim 14 wherein said strain gauge is so positioned between the top surface of said pad and said platen that the gauge generates a signal responsive to a force exerted on one half of said pad and said device includes: a second strain gauge interposed between the top surface of said elastomeric pad and the surface of said platen for sensing force exerted on the other half of said pad; means for amplifying the signal generated by the second sensing means; means for comparing said amplified signal generated by the second sensing means with a predetermined maximum and a predetermined minimum reference signal; and means for displaying a visual indication when the magnitude of the amplified signal from the second sensing means exceeds the predetermined maximum signal or is less than the predetermined minimum reference signal.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |