US5517385A
Expired / Lapsed
US
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Decoupling capacitor structure
Assignee: GlobalFoundries Inc
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Filing: 1994-07-20
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Granted: 1996-05-14
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Expires: 2014-07-20
Abstract
Abstract A capacitor structure is described as having a plurality of dielectric materials located so that each dielectric material is in parallel between capacitor plates. The capacitor value of this structure is preset, therefore, for operation electrically at different specific temperatures. The description gives a specific stacked arrangement for the various dielectric materials in which this capacitor can be formed, as one example of that to which it is adaptable.
Inventors
- 👤 John Galvagni
- 👤 Richard G. Murphy
- 👤 George J. Saxenmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:13
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/38; H01G4/385; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
196 words
An electrical capacitor structure for operating effectively as a decoupling capacitor at two different and spaced apart temperatures, comprising: two capacitor plate means spaced a predetermined distance apart; first dielectric material means, with a first dielectric constant to provide a predetermined capacitance value at a first predetermined temperature, located between said two capacitor plate means and in electrical contact with both of said two capacitor plate means; second dielectric material means, with a second dielectric constant to provide a predetermined capacitance value at a different temperature from said first predetermined temperature, located between said two capacitor plate means and also in electrical contact with both of said two capacitor plate means; at least one of said first and said second dielectric material means is divided into multiple blocks in a predetermined arrangement between said two capacitor plate means, and said first and said second dielectric material means are separated electrically by a low modulus material as a barrier to prevent an intermingling of said dielectric material means which can create a third dielectric material means having an unknown dielectric constant; whereby said electrical capacitor has predetermined values of capacitance at two different and spaced apart temperatures.
Claim 2
Dependent Claim
196 words
An electrical capacitor structure for operating effectively as a decoupling capacitor at two different and spaced apart temperatures, comprising: two capacitor plate means spaced a predetermined distance apart; first dielectric material means, with a first dielectric constant to provide a predetermined capacitance value at a first predetermined temperature, located between said two capacitor plate means and in electrical contact with both of said two capacitor plate means; second dielectric material means, with a second dielectric constant to provide a predetermined capacitance value at a different temperature from said first predetermined temperature, located between said two capacitor plate means and also in electrical contact with both of said two capacitor plate means; at least one of said first and said second dielectric material means is divided into multiple blocks in a predetermined arrangement between said two capacitor plate means, and said first and said second dielectric material means are separated electrically by a low modulus material as a barrier to prevent an intermingling of said dielectric material means which can create a third dielectric material means having an unknown dielectric constant; whereby said electrical capacitor has predetermined values of capacitance at two different and spaced apart temperatures.
Claim 3
Dependent Claim
67 words
An electrical capacitor structure as defined by claim 1 wherein the total capacitance value between said two capacitor plate means is given by the relationship: ##EQU3## where: C=the total capacitance; K 1 =dielectric constant for said first dielectric material means; K 2 =dielectric constant of said second dielectric material means; T=dielectric thickness; A 1 =electrode area with dielectric 1; and A 2 =electrode area with dielectric 2.
Claim 4
Dependent Claim
33 words
An electrical capacitor structure as defined by claim 1 including third dielectric material means located also between said two capacitor plate means in electrical contact with both of said two capacitor plate means.
Claim 5
Dependent Claim
74 words
An electrical capacitor structure as defined by claim 1 including third dielectric material means located also between said two capacitor plate means in electrical parallel with said first and said second dielectric material means, wherein said third dielectric material means is divided into a plurality of quantities of block dielectric material means stacked in a predetermined arrangement, and each of said quantities is in electrical contact with both of said two capacitor plate means.
Claim 6
Dependent Claim
140 words
An electrical capacitor structure for operating effectively as a decoupling capacitor at different temperatures, comprising: two capacitor plate means with multiple blocks of at least two dielectric materials with different, predetermined dielectric constants; each of said multiple blocks of dielectric materials being arranged in predetermined stacks between said two capacitor plate means, and each of said multiple blocks being positioned to be in contact with both of said two capacitor plate means, wherein a total capacitance value of said structure is given by the relationship: ##EQU4## where: C=the total capacitance; K 1 =dielectric constant of one dielectric material; K 2 =dielectric constant of a second dielectric material; A 1 =area of capacitor plate means in electrical contact with said one dielectric material; A 2 =area of capacitor plate means in electrical contact with said second dielectric material; and T=dielectric thickness.
Claim 7
Dependent Claim
140 words
An electrical capacitor structure for operating effectively as a decoupling capacitor at different temperatures, comprising: two capacitor plate means with multiple blocks of at least two dielectric materials with different, predetermined dielectric constants; each of said multiple blocks of dielectric materials being arranged in predetermined stacks between said two capacitor plate means, and each of said multiple blocks being positioned to be in contact with both of said two capacitor plate means, wherein a total capacitance value of said structure is given by the relationship: ##EQU4## where: C=the total capacitance; K 1 =dielectric constant of one dielectric material; K 2 =dielectric constant of a second dielectric material; A 1 =area of capacitor plate means in electrical contact with said one dielectric material; A 2 =area of capacitor plate means in electrical contact with said second dielectric material; and T=dielectric thickness.
References Cited (Backward Citations)
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