US3802069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricating packages for use in integrated circuits
Assignee: GTE Sylvania Inc
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Filing: 1972-05-04
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Granted: 1974-04-09
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Expires: 1992-05-04
Abstract
Abstract There is disclosed an improvement to a process for fabricating packages suitable for use in integrated circuits wherein at least two connecting leads of an electrically conductive member are left affixed to the conductive member''s central pad during fabrication of the conductive member. This improved process substantially reduces possible pad misalignment and damage during these fabrication steps. Prior to ceramic encapsulation of major portions of these connecting leads as well as additional component leads, one of the connecting leads is severed from the pad and the pad is then offset.
Inventors
- 👤 D Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:49
CPC Classifications
H; H10; H10W; H10W95/00; H10W70/00; H10W70/40; H10W70/421; H10W76/00; H10W76/10; H10W76/12; H10W76/15; H10W76/157; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
In a process for fabricating a package suitable for use in integrated circuits wherein said package comprises an electrically conductive member comprising a frame portion extending around the perimeter of said package, a central pad, a plurality of individual component leads spaced apart from said pad and joined to said frame portion, and at least one connecting lead joined at one end to said central pad and at another end to said frame portion, and a ceramic portion serving as a hermetic seal about a major portion of each of said component leads and said connecting lead, the improvement comprising: fabricating said electrically conductive member having only two of said connecting leads affixed to said central pad in an opposing relationship to thereby assure alignment of said central pad; severing one of said connecting leads from said central pad and offsetting said pad; and encapsulating said major portions of said leads in said ceramic portion.
Claim 2
Dependent Claim
155 words
In a process for fabricating a package suitable for use in integrated circuits wherein said package comprises an electrically conductive member comprising a frame portion extending around the perimeter of said package, a central pad, a plurality of individual component leads spaced apart from said pad and joined to said frame portion, and at least one connecting lead joined at one end to said central pad and at another end to said frame portion, and a ceramic portion serving as a hermetic seal about a major portion of each of said component leads and said connecting lead, the improvement comprising: fabricating said electrically conductive member having only two of said connecting leads affixed to said central pad in an opposing relationship to thereby assure alignment of said central pad; severing one of said connecting leads from said central pad and offsetting said pad; and encapsulating said major portions of said leads in said ceramic portion.
Claim 3
Dependent Claim
22 words
The improvement according to claim 1 wherein severing one of said connecting leads from said pad is accomplished by a shearing operation.
Claim 4
Dependent Claim
22 words
The improvement according to claim 2 wherein the center-to-center spacing between said individual component leads at said frame is about 50 mils.
Claim 5
Dependent Claim
22 words
The improvement according to claim 2 wherein the center-to-center spacing between said individual component leads at said frame is about 100 mils.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |