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US3864715A Expired / Lapsed US ⏱️ 0.0 years remaining

Diode array-forming electrical element

Assignee: EIDP Inc
•
Filing: 1972-12-22
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Granted: 1975-02-04
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Expires: 1992-12-22
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Abstract

Abstract A normally insulative layered element, useful in diode array preparation and comprising an electrically activatable electrode composition of metal particles dispersed in a polymeric binder, which composition contacts a semiconductor material.

Inventors

  • 👤 Sebastian Vito Roc Mastrangelo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 22:07
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/36; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/36; G11C17/00; G11C17/06; G11C17/14; G11C17/16; H10; H10D; H10D62/00; H10D62/40; H10D62/80; H10D62/82; H10D84/00; H10D84/201; H10D84/204; H10D84/221; H10P; H10P95/00; H10W; H10W20/00; H10W20/01; H10W20/031; H10W20/40; H10W20/41; H10W20/44; H10W20/4473; H10W20/45; H10W20/48

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 131 words
A LAYERED ELECTRICAL ELEMENT WHICH COMPRISES: A. AN ACTIVATABLE ELECTRODE COMPOSITION CONSISTING ESSENTIALLY OF AN INSULATING BINDER HAVING INSULATIVELY COATED METAL PARTICLES DISPERSED THEREIN, WITH THE PARTICLES AND BINDER TOGETHER CONSTITUTING AN INSULATOR IN THE UNACTIVATED STATE BUT BEING CAPABLE OF BECOMING ELECTRICALLY CONDUCTIVE ON EXPOSURE TO AN ACTIVATING POTENTIAL, AND B. A SEMICONDUCTOR COMPONENT DISPOSED IN AN INSULATING BINDER IN CONTACT WITH (A), SAID LAYERED ELEMENT PRESENTING A FIRST SURFACE AND A SECOND OPPOSING SURFACE AND A VOLUME THEREBETWEEN WHICH ARE NORMALLY NON-CONDUCTIVE, SAID ELEMENT BEING NORMALLY INSULATIVE BUT CAPABLE OF EXHIBITING RECTIFYING PROPERTIES WITH RESPECT TO CURRENT FLOW BETWEEN SAID SURFACES UPON ELECTRICAL ACTIVATION, SAID SURFACES BEING CAPABLE OF REMAINING LATERALLY NONCONDUCTIVE AND SAID VOLUME BEING CAPABLE OF BECOMING CONDUCTIVE BETWEEN SAID SURFACES ON EXPOSURE TO SAID ACTIVATING POTENTIAL.
Claim 2
Dependent Claim 131 words
A LAYERED ELECTRICAL ELEMENT WHICH COMPRISES: A. AN ACTIVATABLE ELECTRODE COMPOSITION CONSISTING ESSENTIALLY OF AN INSULATING BINDER HAVING INSULATIVELY COATED METAL PARTICLES DISPERSED THEREIN, WITH THE PARTICLES AND BINDER TOGETHER CONSTITUTING AN INSULATOR IN THE UNACTIVATED STATE BUT BEING CAPABLE OF BECOMING ELECTRICALLY CONDUCTIVE ON EXPOSURE TO AN ACTIVATING POTENTIAL, AND B. A SEMICONDUCTOR COMPONENT DISPOSED IN AN INSULATING BINDER IN CONTACT WITH (A), SAID LAYERED ELEMENT PRESENTING A FIRST SURFACE AND A SECOND OPPOSING SURFACE AND A VOLUME THEREBETWEEN WHICH ARE NORMALLY NON-CONDUCTIVE, SAID ELEMENT BEING NORMALLY INSULATIVE BUT CAPABLE OF EXHIBITING RECTIFYING PROPERTIES WITH RESPECT TO CURRENT FLOW BETWEEN SAID SURFACES UPON ELECTRICAL ACTIVATION, SAID SURFACES BEING CAPABLE OF REMAINING LATERALLY NONCONDUCTIVE AND SAID VOLUME BEING CAPABLE OF BECOMING CONDUCTIVE BETWEEN SAID SURFACES ON EXPOSURE TO SAID ACTIVATING POTENTIAL.
Claim 3
Dependent Claim 33 words
An element according to claim 1 wherein said first surface is in contact with at least one conductor electrode and said opposing surface is in contact with at least one opposing conductor electrode.
Claim 4
Dependent Claim 36 words
An element according to claim 1 wherein the layered element consists essentially of two layers of said activatable composition (a) and positioned therebetween a layer of said semiconductor component (b), said semiconductor layer being laterally non-conductive.
Claim 5
Dependent Claim 23 words
An element according to claim 3 wherein the semiconductor layer consists essentially of an insulating polymeric binder material having semiconductor particles dispersed therein.
Claim 6
Dependent Claim 26 words
An element according to claim 1 wherein the layered element is a single layer having metal particles and semiconductor particles co-dispersed in a common insulating binder.
Claim 7
Dependent Claim 35 words
An element according to claim 1 wherein the metal particles of (a) are selected from the group consisting of aluminum, antimony, bismuth, cadmium, chromium, cobalt, indium, lead, magnesium, manganese, molybdenum, niobium, tantalum, titanium and tungsten.
Claim 8
Dependent Claim 16 words
An element according to claim 1 wherein the metal particles of (a) are aluminum powder particles.
Claim 9
Dependent Claim 31 words
An element according to claim 3 wherein both layers of activatable composition comprise aluminum powder particles having an average particle size of 0.01 to 1,000 microns dispersed in an insulating binder.
Claim 10
Dependent Claim 24 words
An element according to claim 7 wherein the aluminum metal particles of (a) are essentially spheroidal or nodular shaped particles having smooth rounded edges.
Claim 11
Dependent Claim 17 words
An element according to claim 4 wherein the semiconductor particles are gray, highly conductive Beta -selenium particles.
Claim 12
Dependent Claim 23 words
An element according to claim 3 wherein the metal particles dispersed in one of the layers of the activatable composition are cadmium particles.
Claim 13
Dependent Claim 24 words
An element according to claim 4 wherein the binder materials of both (a) and (b) have a glass transition temperature of at least 100*C.
Claim 14
Dependent Claim 32 words
An element according to claim 11 wherein the binder material of both (a) and (b) is an aromatic polyamide prepared from m-phenylenediamine and a 70/30 mixture of isophthaloyl chloride and terephthaloyl chloride.
Claim 15
Dependent Claim 36 words
An element according to claim 1 wherein said first surface is in contact with two or more spaced apart conductor electrodes and said second surface is in contact with two or more spaced apart opposing electrodes.
Claim 16
Dependent Claim 15 words
An element according to claim 1 wherein said semiconductor component (b) is a p-type semiconductor.

References Cited (Backward Citations)

US2877371A Cited
US3508961A Cited
US3359521A Cited
US3649354A Cited
US3625688A Cited
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US3629155A Cited
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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) 1978-02-03 1978-08-05 1979-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-02-03 1982-08-05 1983-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-02-03 1986-08-05 1987-02-04 $7700.00 Window Closed / Lapsed

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