US5083184A
Expired / Lapsed
US
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Capacitance device
Assignee: NEC Corp
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Filing: 1990-08-08
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Granted: 1992-01-21
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Expires: 2010-08-08
Abstract
Abstract First and second capacitance elements are provided to have the same electric characteristics as each other. A first electrode of the first capacitance element is connected to a second electrode, which is not a counterpart electrode of the first electrode, of the second capacitance element, and a second electrode of the first capacitance element is connected to a first electrode of the second capacitance element. As a result, a capacitance value and a leak current do not change, even if positiveness and negativeness of a bias voltage applied to the connected capacitance elements are reverse.
Inventors
- 👤 Kouhei Eguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:45
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/201; H10D84/204; H10D84/212
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
170 words
A capacitance device, comprising: a first capacitance element having first and second electrodes provided to sandwich a first dielectric film, said second electrode being positioned under said first dielectric film and connected to a first taking-out electrode, and said first electrode being positioned over said first dielectric film and surrounded along a major portion of its periphery by said first taking-out electrode; and a second capacitance element having a third electrode of the same material as said first electrode and a fourth electrode of the same material as said second electrode to sandwich a second dielectric film of the same material as said first dielectric film, said fourth electrode being positioned under said second dielectric film and connected to a second taking-out electrode, and said third electrode being positioned over said second dielectric film and surround along a major portion of its periphery by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode.
Claim 2
Dependent Claim
170 words
A capacitance device, comprising: a first capacitance element having first and second electrodes provided to sandwich a first dielectric film, said second electrode being positioned under said first dielectric film and connected to a first taking-out electrode, and said first electrode being positioned over said first dielectric film and surrounded along a major portion of its periphery by said first taking-out electrode; and a second capacitance element having a third electrode of the same material as said first electrode and a fourth electrode of the same material as said second electrode to sandwich a second dielectric film of the same material as said first dielectric film, said fourth electrode being positioned under said second dielectric film and connected to a second taking-out electrode, and said third electrode being positioned over said second dielectric film and surround along a major portion of its periphery by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode.
Claim 3
Dependent Claim
196 words
A capacitance device, comprising: a first capacitance element composed of a first electrode, a first dielectric film provided on said first electrode, a second dielectric film provided on said first dielectric film, and a second electrode provided on said second dielectric film, said first electrode being connected to a first taking-out electrode, and said second electrode being surrounded along a major portion of its periphery by said first taking-out electrode; and a second capacitance element composed of a third electrode of the same material as said first electrode, a third dielectric film provided on said third electrode and of the same material as said first dielectric film, a fourth dielectric film provided on said third dielectric film and of the same material as said second dielectric film, and a fourth electrode provided on said fourth dielectric film and of the same material as said second electrode, said third electrode being connected to a second taking-out electrode, and said fourth electrode being surrounded along a major portion of its periphery by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode.
Claim 4
Dependent Claim
196 words
A capacitance device, comprising: a first capacitance element composed of a first electrode, a first dielectric film provided on said first electrode, a second dielectric film provided on said first dielectric film, and a second electrode provided on said second dielectric film, said first electrode being connected to a first taking-out electrode, and said second electrode being surrounded along a major portion of its periphery by said first taking-out electrode; and a second capacitance element composed of a third electrode of the same material as said first electrode, a third dielectric film provided on said third electrode and of the same material as said first dielectric film, a fourth dielectric film provided on said third dielectric film and of the same material as said second dielectric film, and a fourth electrode provided on said fourth dielectric film and of the same material as said second electrode, said third electrode being connected to a second taking-out electrode, and said fourth electrode being surrounded along a major portion of its periphery by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode.
Claim 5
Dependent Claim
250 words
A capacitance device, comprising: a first capacitance element having first and second electrodes provided to sandwich a first dielectric film, said second electrode being positioned under said first dielectric film and connected to a first taking-out electrode, and said first electrode being of a four-sided figure to be positioned over said first dielectric film and encircled along three sides thereof by said first taking-out electrode; and a second capacitance element having a third electrode of the same material as said first electrode and a fourth electrode of the same material as said second electrode to sandwich a second dielectric film of the same material as said first dielectric film, said fourth electrode being positioned under said second dielectric film and connected to a second taking-out electrode, and said third electrode being of a four-sided figure to be positioned over said second dielectric film and encircled along three sides thereof by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode; and a center line of said first electrode being deviated from a center line of said third electrode by a predetermined dimension, said center lines being parallel, such that a point-symmetrical arrangement is provided relative to a middle point of said first and second capacitance elements between a first electrode arrangement, comprising said first electrode and said first taking-out electrode, and a second electrode arrangement, comprising said third electrode and said second taking-out electrode.
Claim 6
Dependent Claim
250 words
A capacitance device, comprising: a first capacitance element having first and second electrodes provided to sandwich a first dielectric film, said second electrode being positioned under said first dielectric film and connected to a first taking-out electrode, and said first electrode being of a four-sided figure to be positioned over said first dielectric film and encircled along three sides thereof by said first taking-out electrode; and a second capacitance element having a third electrode of the same material as said first electrode and a fourth electrode of the same material as said second electrode to sandwich a second dielectric film of the same material as said first dielectric film, said fourth electrode being positioned under said second dielectric film and connected to a second taking-out electrode, and said third electrode being of a four-sided figure to be positioned over said second dielectric film and encircled along three sides thereof by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode; and a center line of said first electrode being deviated from a center line of said third electrode by a predetermined dimension, said center lines being parallel, such that a point-symmetrical arrangement is provided relative to a middle point of said first and second capacitance elements between a first electrode arrangement, comprising said first electrode and said first taking-out electrode, and a second electrode arrangement, comprising said third electrode and said second taking-out electrode.
Claim 7
Dependent Claim
47 words
A capacitance device, according to claim 1, wherein: said first and third electrodes are of aluminium films; said second and fourth electrodes are of N + layers each diffused with phosphorus into a substrate of Si; and said first and second dielectric films are of SiN films.
Claim 8
Dependent Claim
38 words
A capacitance device, according to claim 1, wherein: said first and third electrodes are of aluminium films; said second and fourth electrodes are of polycrystal silicon films; and said first and second dielectric films are of TaOx films.
Claim 9
Dependent Claim
269 words
A capacitance device, comprising; a first capacitance element composed of a first electrode, a first dielectric film provided on said first electrode, a second dielectric film provided on said first dielectric film, and a second electrode provided on said second dielectric film, said first electrode being connected to a first taking-out electrode, and said second electrode being a four-sided figure encircled along three sides by said first taking-out electrode; and a second capacitance element composed of a third electrode of the same material as said first electrode, a third dielectric film provided on said third electrode and of the same material as said first dielectric film, a fourth dielectric film provided on said third dielectric film and of the same material as said second dielectric film, and a fourth electrode provided on said fourth dielectric film, and of the same material as said second electrode, said third electrode being connected to a second taking-out electrode, and said fourth electrode being a four-sided figure encircled along three sides thereof by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode; and a center line of said first electrode being deviated from a center line of said third electrode by a predetermined dimension, said center lines being parallel, such that a point-symmetrical arrangement is provided relative to a middle point of said first and second capacitance elements between a first electrode arrangement, comprising said first electrode and said first taking-out electrode, and a second electrode arrangement, comprising said third electrode and said second taking-out electrode.
Claim 10
Dependent Claim
269 words
A capacitance device, comprising; a first capacitance element composed of a first electrode, a first dielectric film provided on said first electrode, a second dielectric film provided on said first dielectric film, and a second electrode provided on said second dielectric film, said first electrode being connected to a first taking-out electrode, and said second electrode being a four-sided figure encircled along three sides by said first taking-out electrode; and a second capacitance element composed of a third electrode of the same material as said first electrode, a third dielectric film provided on said third electrode and of the same material as said first dielectric film, a fourth dielectric film provided on said third dielectric film and of the same material as said second dielectric film, and a fourth electrode provided on said fourth dielectric film, and of the same material as said second electrode, said third electrode being connected to a second taking-out electrode, and said fourth electrode being a four-sided figure encircled along three sides thereof by said second taking-out electrode; wherein said first taking-out electrode is connected to said third electrode, and said second taking-out electrode is connected to said first electrode; and a center line of said first electrode being deviated from a center line of said third electrode by a predetermined dimension, said center lines being parallel, such that a point-symmetrical arrangement is provided relative to a middle point of said first and second capacitance elements between a first electrode arrangement, comprising said first electrode and said first taking-out electrode, and a second electrode arrangement, comprising said third electrode and said second taking-out electrode.
Claim 11
Dependent Claim
40 words
A capacitance device, according to claim 4, wherein: said first to fourth electrodes are of polycrystal silicon films; said first and third dielectric films are of SiO 2 films; and said second and fourth dielectric films are of SiN films.
Claim 12
Dependent Claim
37 words
A capacitance device, according 4, wherein: said first to fourth electrodes are of polycrystal silicon films; said first and third dielectric films are of SiN films; and said second and fourth dielectric films are of TaOx films.
Claim 13
Dependent Claim
37 words
A capacitance device, according 4, wherein: said first to fourth electrodes are of polycrystal silicon films; said first and third dielectric films are of SiN films; and said second and fourth dielectric films are of TaOx films.
References Cited (Backward Citations)
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