Patent US3754170A successfully refreshed from Google Patents.
US3754170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit device having monolithic rf shields
Assignee: Sony Corp
•
Filing: 1972-08-22
•
Granted: 1973-08-21
•
Expires: 1992-08-22
Abstract
Abstract A monolithic, multiple integrated circuit device for use in the radio frequency (RF) stages in a television receiver in which monolithic RF shields are provided to isolate the multiple circuits on the same integrated circuit chip.
Inventors
- 👤 Y Tsuda
- 👤 S Matsumoto
- 👤 T Tsuyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:57
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10D; H10D99/00; H10W44/00; H10W44/20; H10W72/00; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; H10W72/07251; H10W72/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
An integrated circuit device as recited in claim 1 comprising a plurality of radio frequency shields for shielding at least one of the circuits from external radio frequency fields and from radio frequency fields generated in another of the circuits.
Claim 2
Dependent Claim
84 words
An integrated circuit device comprising a body of semiconductor material which incorporates a plurality of integrated circuits, the semiconductor body having at least one planar surface, each of the circuits having a plurality of separate leads which terminate at the planar surface of the semiconductor body, first means integral with the planar surface of the semiconductor body for shielding at least one of the integrated circuits from radio frequency fields generated in another of the integrated circuits and means for mounting the semiconductor body.
Claim 3
Dependent Claim
79 words
An integrated circuit device as recited in claim 3 wherein each of the plurality of leads for each of the integrated circuits projects outwardly from the planar surface by a predetermined distance and the first means for shielding include parallel members of electrically conductive material which project outwardly from the planar surface of the semiconductor body by an amount which is at least equal to the distance of projection of the terminals of the leads to the integrated circuits.
Claim 4
Dependent Claim
87 words
An integrated circuit device as recited in claim 3 wherein the means for mounting the semiconductor body includes a substrate of material having at least one planar surface and second means for shielding at least select ones of the plurality of integrated circuits from the radio frequency fields generated in others of the plurality of integrated circuits, the second means for shielding including members made of conductive material which are integral with the planar surface of the mounting substrate and project from it by a predetermined distance.
Claim 5
Dependent Claim
85 words
An integrated circuit device as recited in claim 3 wherein the semiconductor body includes a first layer of semiconductive material of a first polarity type, a second layer of semiconductive material of a second polarity type which is adjacent to the first layer, and the first means for shielding further includes a first and a second portion of the second polarity type which extend from the planar surface of the semiconductor body through the first layer of material to contact the second layer of material.
Claim 6
Dependent Claim
67 words
An integrated circuit device as recited in claim 3 wherein the first means for shielding include a plurality of individual members of conductive material which are integral with the planar surface of the semiconductor body and which project from it by a predetermined amount, each of the plurality of shielding members being located between a separate pair of the plurality of lead terminals of the integrated circuits.
Claim 7
Dependent Claim
46 words
An integrated circuit device as recited in claim 7 wherein the mounting means includes a plurality of shielding members located on its planar surface to coincide with the plurality of shielding members on the semiconductor body when the semiconductor body is mounted on the mounting means.
Claim 8
Dependent Claim
69 words
An integrated circuit as recited in claim 3 wherein the first shielding means includes an additional member which is integral with the planar surface of the semiconductor body and projects from it by the predetermined distance, is perpendicular to at least two of the plurality of members, and shields a first one of the integrated circuits from the radio frequency fields generated in a second of the integrated circuits.
References Cited (Backward Citations)
US3373323A
Cited
US3518494A
Cited
US3381182A
Cited
US3465210A
Cited
GB1204805A
Cited
US3611071A
Cited
US3614546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |