Multilayer ceramic circuit board having protruding portion...

Details Multilayer ceramic circuit board having protruding portion... Multilayer ceramic circuit board having protruding portion...

2011-08-23

2011-08-23

Dinh, Tuan T (Department: 2835)

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

C174S258000, C174S251000

Reexamination Certificate

active

08003893

ABSTRACT:
A multilayer ceramic circuit board includes ceramic wiring layers which are stacked together, one or two or more lifting layers which have a planar shape and which are disposed as an inner layer inside the stacked ceramic wiring layers or as a lower layer lower than a bottom ceramic wiring layer, and a protruding portion formed on a surface of a top ceramic wiring layer due to the disposition of the one or two or more lifting layers. The protruding portion smoothly protrudes and has a large area and high flatness. The multilayer ceramic circuit board is formed by disposing lifting layers as an inner layer of a plurality green sheets or as a lower layer lower than a bottom green sheet, and firing under pressure the resulting laminate in a state constrained by an elastic constraining sheet and a rigid constraining sheet.

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