US6004657A
Expired / Lapsed
US
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Laminated electronic part
Assignee: Murata Manufacturing Co Ltd
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Filing: 1996-01-11
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Granted: 1999-12-21
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Expires: 2016-01-11
Abstract
Abstract A high degree of freedom of design and high density mounting are achieved with a laminated electronic part having a structure such that the occurrence of floating capacitance can be restrained. The laminated electronic part is formed of a first layer and a second layer which are joined to each other with a third layer sandwiched therebetween. The first and second layers may be formed of dielectrics having substantially different respective dielectric constants, and the third layer is formed of a dielectric having a dielectric constant lower than that of the first and second layers, or an insulator. Connecting conductors are provided inside the third layer. A through-conductor inside the first layer can be connected to a through-conductor inside the second, for example, layer via the connecting conductor inside the third layer.
Inventors
- 👤 Akiyoshi Moriyasu
- 👤 Yasuyuki Morishima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:10
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H05; H05K; H05K1/00; H05K1/16; H05K1/162; H05K3/00; H05K3/46; H05K3/4611; H05K3/4614; H05K3/4626; H05K3/4629; H10W90/00; H10W90/401; H05K1/02; H05K1/03; H05K1/0306; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/0929; H05K2201/09309; H05K3/4623; H05K3/4688; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24926
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
199 words
A laminated electronic part, comprising: a first layer made of a ceramic material having a first dielectric constant, a first circuit element provided in said first layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said first layer, said through-conductors being connected to said first circuit element and extending to outside of said first layer; a second layer made of a ceramic material having a second dielectric constant, a second circuit element provided in said second layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said second layer, said through-conductors being connected to said second circuit element and extending to outside of said second layer; and a third layer provided between said first and second layers, said third layer being made of a material which is a dielectric or an insulator having a third dielectric constant which is lower than said first and second dielectric constants, said third layer having therein at least one connecting conductor which connects the through-conductors of said first layer to the through-conductors of said second layer; wherein at least one of said first and second circuit elements is a capacitor.
Claim 2
Dependent Claim
199 words
A laminated electronic part, comprising: a first layer made of a ceramic material having a first dielectric constant, a first circuit element provided in said first layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said first layer, said through-conductors being connected to said first circuit element and extending to outside of said first layer; a second layer made of a ceramic material having a second dielectric constant, a second circuit element provided in said second layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said second layer, said through-conductors being connected to said second circuit element and extending to outside of said second layer; and a third layer provided between said first and second layers, said third layer being made of a material which is a dielectric or an insulator having a third dielectric constant which is lower than said first and second dielectric constants, said third layer having therein at least one connecting conductor which connects the through-conductors of said first layer to the through-conductors of said second layer; wherein at least one of said first and second circuit elements is a capacitor.
Claim 3
Dependent Claim
27 words
A laminated electronic part as in claim 1, wherein at least one of said first and second layers is a laminate of a plurality of dielectric sheets.
Claim 4
Dependent Claim
23 words
A laminated electronic part as in claim 2, wherein both of said first and second layers are laminates of pluralities of dielectric sheets.
Claim 5
Dependent Claim
29 words
A laminated electronic part as in claim 1, wherein at least one of said first and second layer is a molded dielectric material in the form of a sheet.
Claim 6
Dependent Claim
26 words
A laminated electronic part as in claim 4, wherein both of said first and second layers are molded dielectric material in the form of a sheet.
Claim 7
Dependent Claim
17 words
A laminated electronic part as in claim 1, wherein said first and second dielectric constants are unequal.
Claim 8
Dependent Claim
18 words
A laminated electronic part as in claim 1, wherein said first and second dielectric constants are substantially equal.
Claim 9
Dependent Claim
38 words
A laminated electronic part as in claim 1, wherein said at least one connecting conductor faces at least one of said first and second circuit elements through a portion of said third layer having said third dielectric constant.
Claim 10
Dependent Claim
37 words
A laminated electronic part as in claim 8, wherein said third layer contains a plurality of said connecting conductors which are separated from each other by a portion of said third layer having said third dielectric constant.
Claim 11
Dependent Claim
37 words
A laminated electronic part as in claim 1, wherein said third layer contains a plurality of said connecting conductors which are separated from each other by a portion of said third layer having said third dielectric constant.
Claim 12
Dependent Claim
20 words
A laminated electronic part as in claim 1, wherein both said first circuit element and second circuit element are capacitors.
Claim 13
Dependent Claim
27 words
A laminated electronic part as in claim 2, wherein said capacitor comprises a pair of conductors separated by a respective one of said plurality of dielectric sheets.
Claim 14
Dependent Claim
30 words
A laminated electronic part as in claim 1, wherein said capacitor comprises a pair of conductors separated by a corresponding portion of said one of said first and second layers.
Claim 15
Dependent Claim
176 words
A laminated electronic part, comprising: a first layer made of a ceramic material having a first dielectric constant, a first circuit element provided in said first layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said first layer, said through-conductors being connected to said first circuit element and extending to outside of said first layer; a second layer made of a ceramic material having a second dielectric constant, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said second layer, said through-conductors extending to outside of said second layer; and a third layer provided between said first and second layers, said third layer being made of a material which is a dielectric or an insulator having a third dielectric constant which is lower than said first and second dielectric constants, said third layer having therein at least one connecting conductor which connects the through-conductors of said first layer to the through-conductors of said second layer; wherein said first circuit element is a capacitor.
Claim 16
Dependent Claim
176 words
A laminated electronic part, comprising: a first layer made of a ceramic material having a first dielectric constant, a first circuit element provided in said first layer, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said first layer, said through-conductors being connected to said first circuit element and extending to outside of said first layer; a second layer made of a ceramic material having a second dielectric constant, and a plurality of through-conductors provided inside a corresponding plurality of through-holes which go through said second layer, said through-conductors extending to outside of said second layer; and a third layer provided between said first and second layers, said third layer being made of a material which is a dielectric or an insulator having a third dielectric constant which is lower than said first and second dielectric constants, said third layer having therein at least one connecting conductor which connects the through-conductors of said first layer to the through-conductors of said second layer; wherein said first circuit element is a capacitor.
Claim 17
Dependent Claim
32 words
A laminated electronic part as in claim 14, wherein said at least one connecting conductor faces said first circuit element through a portion of said third layer having said third dielectric constant.
Claim 18
Dependent Claim
37 words
A laminated electronic part as in claim 15, wherein said third layer contains a plurality of said connecting conductors which are separated from each other by a portion of said third layer having said third dielectric constant.
Claim 19
Dependent Claim
37 words
A laminated electronic part as in claim 14, wherein said third layer contains a plurality of said connecting conductors which are separated from each other by a portion of said third layer having said third dielectric constant.
Claim 20
Dependent Claim
17 words
A laminated electronic part as in claim 14, wherein said first and second dielectric constants are unequal.
Claim 21
Dependent Claim
18 words
A laminated electronic part as in claim 14, wherein said first and second dielectric constants are substantially equal.
Claim 22
Dependent Claim
25 words
A laminated electronic part as in claim 14, wherein said capacitor comprises a pair of conductors separated by a corresponding portion of said first layer.
Claim 23
Dependent Claim
41 words
A laminated electronic part as in claim 14, wherein said first layer is a laminate of a plurality of dielectric sheets, and wherein said capacitor comprises a pair of conductors separated by a respective one of said plurality of dielectric sheets.
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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) | 2002-12-20 | 2003-06-21 | 2003-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-20 | 2007-06-21 | 2007-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-20 | 2011-06-21 | 2011-12-21 | $7700.00 | Window Closed / Lapsed |