US6183669B1
Expired / Lapsed
US
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Paste composition, circuit board using the same, ceramic green sheet, ceramic substrate, and method for manufacturing ceramic multilayer substrate
Assignee: Murata Manufacturing Co Ltd
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Filing: 2000-03-09
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Granted: 2001-02-06
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Expires: 2020-03-09
Abstract
Abstract There is disclosed a paste composition including (A) an organic binder comprising acidic functional groups; (B) an inorganic powder containing multivalent metal compounds; and (C) a mono-ol compound having a boiling point of about 178° C. or more. The paste composition enables various fine patterns such as via-holes with high precision, by suppressing gelation caused by mixing an organic binder having acidic functional groups and a compound containing multivalent metals.
Inventors
- 👤 Masahiro Kubota
- 👤 Michiaki Iha
- 👤 Shizuharu Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:30
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; B; B32; B32B; B32B18/00; C; C03; C03C; C03C8/00; C03C8/14; C03C8/16; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/265; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B37/00; C04B37/001; G; G03; G03F; G03F7/00; G03F7/004; G03F7/0047; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H10W70/67; H10W70/68; H10W70/685; H10W70/69; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6562; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/121; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/345; C04B35/63404; C04B35/63432; H05K3/00; H05K3/46; H05K3/4611; H05K3/4626; H05K3/4629
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
36 words
A paste composition comprising: (A) an organic binder comprising acidic functional groups; (B) an inorganic powder comprising a multivalent metal compound; and (C) a mono-ol compound having a boiling point of about 178° C. or more.
Claim 2
Dependent Claim
36 words
A paste composition comprising: (A) an organic binder comprising acidic functional groups; (B) an inorganic powder comprising a multivalent metal compound; and (C) a mono-ol compound having a boiling point of about 178° C. or more.
Claim 3
Dependent Claim
21 words
The paste composition according to claim 1 , wherein the inorganic powder comprises a glass powder or ceramic powder or both.
Claim 4
Dependent Claim
26 words
The paste composition according to claim 2 , wherein the paste composition contains about 30% to less than about 90% by volume of the inorganic powder.
Claim 5
Dependent Claim
27 words
The paste composition according to claim 3 , wherein the mean particle size of the inorganic powder is in the range of about 0.1 to 10 μm.
Claim 6
Dependent Claim
13 words
The paste composition according to claim 1 additionally containing a photosensitive organic component.
Claim 7
Dependent Claim
14 words
The paste composition according to claim 5 , further containing a UV absorbing agent.
Claim 8
Dependent Claim
35 words
The paste composition according to claim 1 additionally containing an organic solvent and wherein the mono-ol compound is about 10 to 92% by weight of the combined amount of the mono-ol compound and organic solvent.
Claim 9
Dependent Claim
36 words
The paste composition according to claim 7 containing at least twice as many moles of the mono-ol compound as the moles of the multivalent metal ions that are dissolved in the soluble fraction of the paste.
Claim 10
Dependent Claim
23 words
The paste composition according to claim 7 , wherein the organic binder is an acrylic copolymer having carboxylic groups on its side chain.
Claim 11
Dependent Claim
53 words
The paste composition according to claim 1 additionally containing an organic solvent, wherein the mono-ol compound is about 10 to 92% by weight of the combined amount of the mono-ol compound and organic solvent and wherein the paste composition contains about 30% to less than about 90% by volume of the inorganic powder.
Claim 12
Dependent Claim
36 words
The paste composition according to claim 10 containing at least twice as many moles of the mono-ol compound as the moles of the multivalent metal ions that are dissolved in the soluble fraction of the paste.
Claim 13
Dependent Claim
21 words
A ceramic green sheet comprising a sheet of a slurry comprising a solvent and the paste composition of claim 1 .
Claim 14
Dependent Claim
38 words
The ceramic green sheet according to claim 12 containing at least twice the number of moles of the mono-ol compound as the moles of the multivalent metal ions that are dissolved in the solvent fraction of the slurry.
Claim 15
Dependent Claim
32 words
The ceramic green sheet according to claim 13 , wherein the content of the mono-ol compound is about 5 to 95% by weight relative to the total solvent fraction of the slurry.
Claim 16
Dependent Claim
32 words
The ceramic green sheet according to claim 12 , wherein the content of the mono-ol compound is about 5 to 95% by weight relative to the total solvent fraction of the slurry.
Claim 17
Dependent Claim
42 words
The ceramic green sheet according to claim 15 , wherein the inorganic powder is a powder containing at least one multivalent ion selected from the group comprising boron, barium, magnesium, aluminum, calcium, lead, bismuth, copper, zinc, zirconium, niobium, chromium, strontium and titanium.
Claim 18
Dependent Claim
18 words
The ceramic green sheet according to claim 12 , wherein the slurry further comprises a photosensitive organic component.
Claim 19
Dependent Claim
68 words
A method for manufacturing a ceramic multilayer substrate comprising the steps of: forming via-holes through a plurality of ceramic green sheets of claim 12 ; forming a conductor pattern in electrical continuity with a via-hole on at least one of the resulting green sheets; laminating a plurality of the via-hole containing green sheets including the ceramic green sheet having the conductor pattern; and firing the laminated green sheets.
References Cited (Backward Citations)
JPH06283846A
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US5914358A
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JPH0992983A
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JPH09218508A
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JPH09218509A
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JPH09222723A
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JPH10171107A
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JPH10279364A
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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) | 2004-02-06 | 2004-08-07 | 2005-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-06 | 2008-08-07 | 2009-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-06 | 2012-08-07 | 2013-02-06 | $7700.00 | Window Closed / Lapsed |