Patent EP0452955A2 successfully refreshed from Google Patents.
EP0452955A2
Expired / Lapsed
EP
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Capacitor and process for production thereof
Assignee: Panasonic Holdings Corp
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Filing: 1991-04-19
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Granted: —
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Expires: 2011-04-19
Abstract
Abstract Disclosed in this invention is a capacitor comprising a dielectric thin film being sandwiched by two layers of thin film electrodes directly or through interposition of a suitable thin film, and lead electrodes connected to said thin film electrodes, said dielectric thin film being a chemically adsorbed monomolecular film or a chemically adsorbed monomolecular built-up film made from a chlorosilane surface active agent. The molecules having large dipoles are incorporated in the molecules of the surface active agent to enhance the dielectric strength of the monomolecular film.
Inventors
- 👤 Kazufumi Ogawa
- 👤 Norihisa Mino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:45
CPC Classifications
B; B82; B82Y; B82Y30/00; H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; B82Y10/00; H01G4/06; H01G4/14; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
58 words
A capacitor comprising a dielectric thin film being sandwiched by two layers of thin film electrodes directly or through interposition of a suitable thin film, and lead electrodes connected to said thin film electrodes, said dielectric thin film being a chemically adsorbed monomolecular film or a chemically adsorbed monomolecular built-up film made from a chlorosilane surface active agent.
Claim 2
Dependent Claim
23 words
The capacitor according to Claim 1, wherein the chlorosilane surface active agent has a linear carbon chain with 10 to 25 carbon atoms.
Claim 3
Dependent Claim
31 words
The capacitor according to Claim 1, wherein the chlorosilane surface active agent has at one molecular end thereof a suitable substituent and at the other end molecular thereof a chlorosilyl group.
Claim 4
Dependent Claim
32 words
The capacitor according to Claim 1, wherein the chlorosilane surface active agent is a compound in which chlorosilyl groups are bonded to part of the liquid crystal molecules through a carbon chain.
Claim 5
Dependent Claim
16 words
The capacitor according to Claim 4, wherein the liquid crystal molecules are nematic liquid crystal molecules.
Claim 6
Dependent Claim
16 words
The capacitor according to Claim 4, wherein the liquid crystal molecules are ferroelectric liquid crystal molecules.
Claim 7
Dependent Claim
19 words
The capacitor according to Claim 6, wherein the ferroelectric liquid crystal is azomethine type, azoxy type or ester type.
Claim 8
Dependent Claim
25 words
The capacitor according to Claim 6, wherein CH₂ = CH-(CH₂) n -SiCl₃ (wherein n is an integer) is used as the chlorosilane surface active agent.
Claim 9
Dependent Claim
30 words
The capacitor according to Claim 1, wherein an electrolyte is held between a pair of opposing electrodes made by a chemical adsorption technique method using a chlorosilane surface active agent.
Claim 10
Dependent Claim
64 words
A process for producing a capacitor, which comprises a step of forming a single layer of monomolecular film on both surfaces of a metallic electrode by letting a chlorosilane surface active agent in a non-aqueous organic solvent be chemically adsorbed on the surface of the electrode-forming film either directly or by interposing therebetween a suitable thin film, and thereby effecting chemical bondings of siloxane.
Claim 11
Dependent Claim
19 words
The process according to Claim 10, wherein the metallic electrode-forming film is made of Al or an Al-containing alloy.
Claim 12
Dependent Claim
17 words
The process according to Claim 10, wherein the chlorosilane surface active agent has a linear hydrocarbon chain.
Claim 13
Dependent Claim
31 words
The process according to Claim 12, wherein the linear carbon chain is terminated at one end thereof with a suitable substituent and at the other end thereof with a chlorosilyl group.
Claim 14
Dependent Claim
33 words
The process according to Claim 10, wherein the chlorosilane surface active agent has a structure in which chlorosilyl groups are bonded to a part of the liquid crystal molecules through a carbon chain.
Claim 15
Dependent Claim
16 words
The process according to Claim 14, wherein the liquid crystal molecules are nematic liquid crystal molecules.
Claim 16
Dependent Claim
16 words
The process according to Claim 14, wherein the liquid crystal molecules are ferroelectric liquid crystal molecules.
Claim 17
Dependent Claim
19 words
The process according to Claim 16, wherein the ferroelectric liquid crystal is azomethine type, azoxy type or ester type.
Claim 18
Dependent Claim
100 words
The process according to Claim 10, wherein said chlorosilane surface active agent has at one end thereof a substituent selected from vinyl group, acetylene group and cyano group and has at the other end thereof a chlorosilyl group, said process further compring a step of reacting said substituent by a treatment with a chemical agent for adding a hydroxyl group and then effectuating chemical adsorption of said chlorosilane surface active agent, said step being performed after the step of forming a single layer of monomolecular film by having said chlorosilane surface active agent chemically adsorbed on the metallic electrode surface.
Claim 19
Dependent Claim
38 words
The process according to Claim 10, wherein the reaction of the substituent is performed by application of radiation or a plasma treatment, and the process includes a step of effecting chemical adsorption of the chlorosilane surface active agent.
Claim 20
Dependent Claim
24 words
The process according to claim 18, wherein CH₂ = CH(CH₂) n -SiCl₃ (n being an integer) is used as the chlorosilane surface active agent.
References Cited (Backward Citations)
No citation records indexed.
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