Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1995-12-21
1998-10-27
Ryan, Patrick
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428210, 428217, 428901, 174250, 174255, 361748, 361750, B32B 900
Patent
active
058276050
ABSTRACT:
The present invention provides a multilayer ceramic substrate and a method of producing the same which can prevent occurrence of cracks when laminating different ceramic substrates or due to subsequent heat shock, and which has excellent moisture resistance and insulation properties and high reliability. The ceramic multilayer substrate has two ceramic substrates of different thermal expansion coefficients laminated by at least two glass layers of different thermal expansion coefficients which are between the thermal expansion coefficients of the ceramic substrates so that the thermal expansion coefficient changes stepwise between the ceramic substrates. The differences in thermal expansion coefficient between the ceramic substrate and the glass layer which are adjacent to each other, and between the adjacent glass layers are preferably not more than 1.times.10.sup.-6 /.degree. C.
REFERENCES:
patent: 4624896 (1986-11-01), Watanabe
patent: 4795670 (1989-01-01), Nishigaki
patent: 5294477 (1994-03-01), Kanba
Nishide Mitsuyoshi
Tani Hiroji
Murata Manufacturing Co. Ltd.
Ryan Patrick
LandOfFree
Ceramic multilayer substrate and method of producing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceramic multilayer substrate and method of producing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic multilayer substrate and method of producing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1612442