EP0396155A2
Expired / Lapsed
EP
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Glass ceramic 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 glass ceramic dielectric compositions in which the dielectric is a mixture of amorphous aluminoborosilicate glass, which upon firing forms a single phase of ceramic crystals in a matrix of amorphous remainder glass, and a ceramic additive to minimize substrate bowing.
Inventors
- 👤 Kumaran Manikantan Nair
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:00
CPC Classifications
C; C03; C03C; C03C14/00; C03C14/004; C03C10/00; C03C10/0036; C03C10/0045; C03C10/0054; H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/085; H01B3/087; H01B3/088; H01B3/12; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; C03C2214/00; C03C2214/04; C03C2214/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A printable thick film dielectric composition consisting essentially of an admixture of finely divided particles of (a) amorphous aluminoborosilicate glass which is crystallizable at thick film processing conditions to form a single phase of celsian or an aluminate of Ba, Ca, Mg or Zn in a matrix of remainder glass; (b) 1-15% wt., basis total solids of a ceramic material selected from Al₂O₃, SiO₂, complex oxides of Al₂O₃ and SiO₂, Si₃N₄, AlN, complex nitrides Si₃N₄ and AlN and mixtures thereof, the admixture being dispersed in (c) organic medium.
Claim 2
Dependent Claim
88 words
A printable thick film dielectric composition consisting essentially of an admixture of finely divided particles of (a) amorphous aluminoborosilicate glass which is crystallizable at thick film processing conditions to form a single phase of celsian or an aluminate of Ba, Ca, Mg or Zn in a matrix of remainder glass; (b) 1-15% wt., basis total solids of a ceramic material selected from Al₂O₃, SiO₂, complex oxides of Al₂O₃ and SiO₂, Si₃N₄, AlN, complex nitrides Si₃N₄ and AlN and mixtures thereof, the admixture being dispersed in (c) organic medium.
Claim 3
Dependent Claim
29 words
The composition of claim 1 in which the glass forms a single phase of an aluminate of Ba, Ca, Mg or Zn in a matrix of amorphous remainder glass.
Claim 4
Dependent Claim
31 words
The composition of claim 5 in which the glass consists essentially of 30% SiO₂ 8% TiO₂, TiO₂ or mixtures thereof, 12% Al₂O₃, 12% BaO, 24% ZnO, 6% CaO and 8% B₂O₃.
Claim 5
Dependent Claim
62 words
A dielectric glass ceramic composite film formed by (1) applying a thick film of the composition of claim 1 to a substrate and (2) heating the film under Thick Film Processing Conditions to effect (a) volatilization of the organic medium and (b) formation of a single phase of ceramic crystals from the amorphous aluminoborosilicate glass which is dispersed in the remainder glass.
References Cited (Backward Citations)
No citation records indexed.
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