EP0253343A1
Expired / Lapsed
EP
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Glass cermic dielectric compositions
Assignee: EIDP Inc
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Filing: 1987-07-11
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Granted: —
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Expires: 2007-07-11
Abstract
Abstract The invention is directed to thick film crossover dielectric compositions in which the dielectric is an amorphous aluminoborosilicate glass which upon firing forms a single phase of metal aluminate in a matrix of amorphous remainder glass.
Inventors
- 👤 Kumaran Manikantan Nair
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:20
CPC Classifications
H; H01; H01R; H01R3/00; H01B; H01B3/00; H01B3/02; H01B3/12; C; C03; C03C; C03C10/00; C03C10/0036; H01B3/08; H01B3/087; H01B3/088; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K3/00; H05K3/46; H05K3/4685
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
A printable thick film dielectric composition consisting essentially of (a) finely divided particles of an amorphous aluminoborosilicate glass which is crystallizable at thick film processing conditions to form a single phase of an aluminate of Ba, Ca, Mg or Zn in a matrix of amorphous remainder glass dispersed in (b) organic medium.
Claim 2
Dependent Claim
52 words
A printable thick film dielectric composition consisting essentially of (a) finely divided particles of an amorphous aluminoborosilicate glass which is crystallizable at thick film processing conditions to form a single phase of an aluminate of Ba, Ca, Mg or Zn in a matrix of amorphous remainder glass dispersed in (b) organic medium.
Claim 3
Dependent Claim
34 words
The composition of Claim 1 in which the glass by weight % consists essentially of 30% SiO₂, 8% TiO₂, ZrO₂ or mixtures thereof, 12% Al₂O₃, 12% BaO, 24% ZnO, 6% CaO, and 8% B₂O₃.
Claim 4
Dependent Claim
53 words
An amorphous aluminoborosilicate glass frit which is crystallizable at thick film processing conditions to form a single phase of aluminate in a matrix of remainder glass, the amorphous glass consisting essentially by weight of 30% SiO₂, 8% TiO₂, ZrO₂ or mixtures thereof, 12% Al₂O₃, 12% BaO, 24% ZnO, 6% CaO, and 8% B₂O₃.
Claim 5
Dependent Claim
53 words
An amorphous aluminoborosilicate glass frit which is crystallizable at thick film processing conditions to form a single phase of aluminate in a matrix of remainder glass, the amorphous glass consisting essentially by weight of 30% SiO₂, 8% TiO₂, ZrO₂ or mixtures thereof, 12% Al₂O₃, 12% BaO, 24% ZnO, 6% CaO, and 8% B₂O₃.
Claim 6
Dependent Claim
13 words
The composition of Claim 3 in which the crystallized phase is a spinel.
Claim 7
Dependent Claim
12 words
The composition of Claim 4 in which the crystallized phase is ZnAl₂O₄.
Claim 8
Dependent Claim
58 words
A dielectric film formed by (1) applying a layer of the composition of claim 1 to a substrate and (2) heating the layer under Thick Film Processing Conditions to effect (a) volatilization of the organic medium and (b) formation of a single phase of aluminate crystals from the amorphous aluminoborosilicate glass which is dispersed in the remainder glass.
References Cited (Backward Citations)
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