GLASS CERAMIC MULTILAYER CIRCUIT BOARD

PROBLEM TO BE SOLVED: To provide a glass ceramic multilayer circuit board having high dimensional accuracy, even for thin board thickness, i.e. when the thickness of insulating layer is small, and the board strength becomes stably high. SOLUTION: In the glass ceramic multilayer circuit board 1 in which a plurality of insulating layers, having different composition, are laminated and shrinkage in a planar direction is suppressed, by reducing an outermost insulating layer 3 in thickness and making the proportion of an amorphous layer larger than that of the insulating layer, disposed in contact with the inside of the outermost insulating layer 3. The glass ceramic multilayer circuit board 1 that has smaller deterioration in strength even if its thickness is reduced, can be provided. COPYRIGHT: (C)2008,JPO&INPIT