US5540742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating thin film cells and printed circuit boards containing thin film cells using a screen printing process
Assignee: Brother Industries Ltd
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Filing: 1995-04-24
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Granted: 1996-07-30
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Expires: 2015-04-24
Abstract
Abstract Disclosed herein is a thin film cell in which a cell unit is sealed by a polyimide 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 lithium-aluminum 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.
Inventors
- 👤 Kazuo Sangyoji
- 👤 Morimasa Mano
- 👤 Takeshi Miyabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:52
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0564; H01M10/0565; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/209; H01M6/00; H01M6/14; H01M6/18; H01M6/188; H01M6/40; H05; H05K; H05K1/00; H05K1/16; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
55 words
A method of fabricating a thin film cell, comprising: using a screen printing process, forming an electrolytic material layer on a flexible, electrically-conductive foil layer, said foil layer having a polarity such that said foil layer is an anode layer; and using a screen printing process, forming a cathode layer on said electrolytic material layer.
Claim 2
Independent Claim
55 words
A method of fabricating a thin film cell, comprising: using a screen printing process, forming an electrolytic material layer on a flexible, electrically-conductive foil layer, said foil layer having a polarity such that said foil layer is an anode layer; and using a screen printing process, forming a cathode layer on said electrolytic material layer.
Claim 3
Dependent Claim
21 words
The method according to claim 1, further comprising surrounding said anode layer, electrolytic layer, and cathode layer by a packaging member.
Claim 4
Dependent Claim
58 words
The method according to claim 2, wherein said packaging member includes a first and a second sheet of heat-bondable, insulative material containing a lead terminal and wherein said first sheet is placed below said anode layer, said second sheet is placed above said cathode layer and said first and second sheets are vacuum fusion bonded to each other.
Claim 5
Dependent Claim
21 words
The method according to claim 1, further comprising a fourth step of forming a current collector layer on said cathode layer.
Claim 6
Dependent Claim
33 words
The method according to claim 1, further comprising: attaching said anode layer on a substrate; and forming lead terminals and a circuit pattern on said substrate which continuously extend from said anode layer.
Claim 7
Dependent Claim
17 words
The method according to claim 5, further comprising: forming a current collector layer on said cathode layer.
Claim 8
Dependent Claim
29 words
The method according to claim 6, wherein at least one of said current collector layer, said lead terminals, and said circuit pattern is formed by a screen printing process.
Claim 9
Dependent Claim
18 words
The method according to claim 4, wherein said current collector layer is formed using a screen printing process.
Claim 10
Dependent Claim
15 words
The method according to claim 1, wherein said anode layer is an electrically-conductive metal foil.
Claim 11
Dependent Claim
13 words
The method according to claim 9, wherein said metal foil is lithium foil.
Claim 12
Dependent Claim
15 words
The method according to claim 9, wherein said metal foil is a lithium-aluminum alloy foil.
Claim 13
Dependent Claim
24 words
The method according to claim 1, wherein said cathode layer is a composite material obtained by mixing Vanadium oxide and polyethylene oxide derivatives together.
Claim 14
Independent Claim
105 words
A method of fabricating a thin film cell, said thin film cell having a flexible, electrically-conductive foil layer, an electrolytic material layer and an electrode layer, said foil layer and said electrode layer having polarities such that when said foil layer is a cathode layer said electrode layer is an anode layer, and when said foil layer is an anode layer said electrode layer is a cathode layer, said method comprising the steps of: using a screen printing process, forming said electrolytic material layer on said flexible, electrically-conductive foil layer; and using a screen printing process, forming said electrode layer on said electrolytic material layer.
Claim 15
Independent Claim
105 words
A method of fabricating a thin film cell, said thin film cell having a flexible, electrically-conductive foil layer, an electrolytic material layer and an electrode layer, said foil layer and said electrode layer having polarities such that when said foil layer is a cathode layer said electrode layer is an anode layer, and when said foil layer is an anode layer said electrode layer is a cathode layer, said method comprising the steps of: using a screen printing process, forming said electrolytic material layer on said flexible, electrically-conductive foil layer; and using a screen printing process, forming said electrode layer on said electrolytic material layer.
Claim 16
Dependent Claim
16 words
The method according to claim 13, wherein said electrolytic material layer is an ion-conductive polymer electrolyte.
Claim 17
Dependent Claim
20 words
The method according to claim 14, wherein said polymer electrolyte is formed by mixing polyethylene oxide derivatives with lithium salt.
Claim 18
Dependent Claim
16 words
The method according to claim 15, wherein said polymer electrolyte further includes carbon powder mixed therein.
Claim 19
Dependent Claim
21 words
The method according to claim 4, wherein said current collector layer is formed by applying conductive paste on said cathode layer.
Claim 20
Dependent Claim
30 words
The method according to claim 5, wherein said anode layer is attached to said substrate by applying an epoxy resin adhesive to said substrate prior to forming said anode layer.
Claim 21
Dependent Claim
37 words
The method according to claim 6, wherein an insulative layer is formed over a portion of said electrolytic layer prior to formation of said cathode layer for preventing short-circuiting between said cathode layer and said lead terminals.
Claim 22
Dependent Claim
12 words
The method according to claim 19, wherein said insulative layer is polyimide.
Claim 23
Dependent Claim
13 words
The method according to claim 5, wherein said substrate is a polyester film.
Claim 24
Dependent Claim
42 words
The method of claim 13, wherein the step of forming said electrolytic material layer comprises forming said electrolytic material layer in a predetermined pattern, and wherein the step of forming said electrode layer comprises forming said electrode layer in a predetermined pattern.
Claim 25
Independent Claim
55 words
A method of fabricating a thin film cell, comprising: using a screen printing process, forming an electrolytic material layer on a flexible, electrically-conductive foil layer, said foil layer having a polarity such that said foil layer is a cathode layer; and using a screen printing process, forming an anode layer on said electrolytic material layer.
Claim 26
Independent Claim
55 words
A method of fabricating a thin film cell, comprising: using a screen printing process, forming an electrolytic material layer on a flexible, electrically-conductive foil layer, said foil layer having a polarity such that said foil layer is a cathode layer; and using a screen printing process, forming an anode layer on said electrolytic material layer.
Claim 27
Dependent Claim
42 words
The method of claim 23, wherein the step of forming an electrolytic material layer comprises forming the electrolytic material layer in a predetermined pattern, and wherein the step of forming an anode layer comprises forming the anode layer in a predetermined pattern.
Claim 28
Dependent Claim
42 words
The method of claim 1, wherein the step of forming an electrolytic material layer comprises forming the electrolytic material layer in a predetermined pattern, and wherein the step of forming a cathode layer comprises forming the cathode layer in a predetermined pattern.
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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) | 1999-07-30 | 2000-01-29 | 2000-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-30 | 2004-01-29 | 2004-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-30 | 2008-01-29 | 2008-07-30 | $7700.00 | Window Closed / Lapsed |