Method of making multiple electrical components in integrated microminiature form

• US 4,342,143 A
• Filed: 05/01/1978
• Issued: 08/03/1982
• Est. Priority Date: 02/04/1974
• Status: Expired due to Term

• Current Assignee: Thomas A. Jennings
• Original Assignee: Thomas A. Jennings
• Inventors: Jennings, Thomas A.
• Primary Examiner(s): Hall, Carl E.
• Application Number:
  US05/901,994
• Time in Patent Office: 1,555 Days
• Field of Search: 29/602 R, 29/620, 29/25.42, 29/625, 29/846, 361/402, 361/313, 361/330, 336/200, 427/79, 427/96, 427/101-103
• US Class Current: 29/25.42
• CPC Class Codes: H01F 17/0013 with stacked layers
• CPC Class Codes: H01L 27/01 comprising only passive thin-film or thick-film elements formed on a common insulating substrate passive two-terminal components without a potential-jump or surface barrier for integrated circuits, details thereof and multistep manufacturing processes therefor H01L28/00
• CPC Class Codes: H05K 1/0393 Flexible materials H05K1/038 takes precedence; specific organic compositions are classified in H05K1/0313 and subgroups
• CPC Class Codes: H05K 1/162 incorporating printed capacitors
• CPC Class Codes: H05K 1/165 incorporating printed inductors
• CPC Class Codes: H05K 1/167 incorporating printed resistors
• CPC Class Codes: H05K 2201/0397 Tab
• CPC Class Codes: H05K 2201/09672 Superposed layout, i.e. in different planes
• CPC Class Codes: H05K 3/202 using self-supporting metal foil pattern
• CPC Class Codes: H05K 3/403 Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof H05K3/4092 takes precedence
• CPC Class Codes: H05K 3/4092 Integral conductive tabs, i.e. conductive parts partly detached from the substrate
• CPC Class Codes: H05K 3/4611 by laminating two or more circuit boards H05K3/4652 takes precedence
• CPC Class Codes: H05K 3/4635 laminating flexible circuit boards using additional insulating adhesive materials between the boards
• CPC Class Codes: Y10T 29/435 Solid dielectric type
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor
• CPC Class Codes: Y10T 29/49099 Coating resistive material on a base
• CPC Class Codes: Y10T 29/49155 Manufacturing circuit on or in base

Abstract

Integrated structures of various combinations of inductors, capacitors and resistors are formed by bonded laminations of films of electrical conductors of desired configurations and electrical properties separated by films of dielectric material. Electrical terminals extending from appropriate ones of the conductors may be interconnected selectively to provide various single, series and parallel circuit component arrangements.

Claims

1. A method of making an integrated one-piece microminiature series circuit having a central opening comprising at least a capacitor and a helical inductor coil which are integrated with one another and which are disposed so that one overlies the other, said capacitor and said coil both having central openings and being contained within the same transverse area;

said method comprising the steps of providing a substrate, applying and bonding to each other a plurality of superposed films on said substrate to define said series circuit, each said films having a central opening, alternate layers of said films being comprised of electrically conductive material and dielectric material, said layers of conductive material being separated from one another by said layers of dielectric material, interconnecting some of said adjacent overlying layers of conductive material to provide said helical inductor coil, one of the layers of conductive material defining a first capacitor plate, the layer of conductive material defining the end of turn of said helical coil which is closest to said first capacitor plate comprising a second capacitor plate whereby said first and second capacitor plates define said capacitor, and providing electrical connection means at the other end turn of said inductor coil and from said first capacitor plate so that said inductor coil and said capacitor comprise an integrated one piece series circuit.

2. A method as defined in claim 1 including the step of providing a resistor in said series circuit by making the resistance of said other end turn of said inductor coil a predeterminal resistance which is greater than the resistance of said inductor coil so that said helical inductor coil and said capacitor comprise an integrated one piece series circuit with said resistor.

3. A method of making an integrated one-piece microminiature circuit have a central opening comprising at least a capacitor and a helical inductor coil which are disposed so that one overlies the other, said capacitor and said coil both having central openings and being contained within the same transverse area and being selectively connectable as separate components, as part of a series circuit or as part of a parallel circuit;

said method comprising the steps of providing a substrate, applying and bonding to each other a plurality of superposed films on said substrate to define said circuit, alternate layers of said films being comprised of electrically conductive material and dielectric material, said layers of conductive material being separated from one another by said layers of dielectric material, interconnecting some of adjacent overlying layers of said conductive material to provide said helical inductor coil, two of said layers of conductive material defining first and second capacitor plates respectively, and extending electrical terminals laterally outward from the layers of conductive material comprising the end turns of said helical coil and from the layers of conductive material comprising each of said capacitor plates so that said inductor coil and said capacitor plates can be selectively connected as separate components, as part of a series circuit or as part of a parallel circuit.

4. A method as defined in claim 3 including the step of providing a resistor in said circuit by applying at least an additional layer of conductive material and dielectric material, said layers of conductive material being separated from one another by said layers of dielectric material and having a predetermined resistance which is greater than the resistance of said coil, extending electrical terminals laterally outward from said resistor so that said resistor can be selectively connected as a separate component, as part of said series circuit or as part of said parallel circuit.