Printed circuit board having a thin film cell incorporated therein

• US 5,035,965 A
• Filed: 04/19/1990
• Issued: 07/30/1991
• Est. Priority Date: 05/01/1989
• Status: Expired due to Term

• Current Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Original Assignee: Brother Kogyo Kabushiki Kaisha (Brother Industries Limited)
• Inventors: Miyabayashi, Takeshi, Mano, Morimasa, Sangyoji, Kazuo
• Primary Examiner(s): Skapars, Anthony
• Application Number:
  US07/514,684
• Time in Patent Office: 467 Days
• Field of Search: 429/124, 429/127, 429/191, 429/30, 429/192, 361/397, 361/398, 361/400, 361/402, 361/404
• US Class Current: 429/124
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 6/188 Processes of manufacture
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: H05K 1/16 incorporating printed electric components, e.g. printed resistor, capacitor, inductor
• CPC Class Codes: H05K 2201/10037 Printed or non-printed battery
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Disclosed herein is a thin film cell in which a cell unit is sealed by a polyamide film. Such a cell unit can be obtained by forming an ion-conductive polymer electrolytic layer formed by mixing polyethylene oxide derivatives with lithium salt on a negative-polarity material composed of lithium or a lithiumaluminum metal foil and then forming a layer of a positive-polarity material from composite materials formed by mixing Vanadium oxide and polyethylene oxide derivatives together, on the electrolytic layer, by using a screen printing process. Also disclosed is a printed circuit board with a thin film cell incorporated therein, in which said cell unit is to be mounted on a flexible film substrate, by using a screen printing process. By this invention, the thin film cell and the printed circuit board can be fabricated in a continuous manner by making use of a screen printing process.

Claims

1. A printed circuit board having a thin film cell incorporated therein, comprising:

a substrate formed with a predetermined circuit pattern;

a flexible electrically-conductive negative-polarity material layer fixedly secured on said substrate;

an electrolytic material layer secured to said negative-polarity material layer;

a flexible electrically-conductive positive-polarity material layer secured to said electrolytic material;

an electric collector secured to said positive-polarity material layer; and

lead terminals electrically connected to said negative-polarity material layer.

2. The printed circuit board according to claim 1, wherein said electrolytic material layer is an ion-conductive polymer electrolyte.

3. The printed circuit board according to claim 1, wherein at least one of said negative-polarity material layer, said positive-polarity material layer, said electrolytic material layer and said electric collector are formed by a screen printing process.

4. The printed circuit board according to claim 3, wherein said predetermined circuit pattern and lead terminals are formed by a screen printing process.

5. The printed circuit board according to claim 1, wherein at least one of said negative-polarity material layer, said positive-polarity material layer, said electrolytic material layer, and said electric collector are formed from a conductive paste.