Patent ID: 8975535
Filing Date: 2015-03-10
Classification: H01L,H05K

Abstract:
1. A many-up wiring substrate, comprising: a base substrate of insulating ceramic material having dividing grooves formed as part of main surfaces thereof, along all boundaries of a plurality of wiring substrate regions, the plurality of wiring substrate regions being arranged in a matrix and each having an electronic component-mounting region at a center thereof, when seen in a transparent plan view, dividing grooves of one main surface comprising transverse dividing grooves and longitudinal dividing grooves and dividing grooves of an opposite main surface comprising transverse dividing grooves and longitudinal dividing grooves, the dividing grooves of the one main surface and the dividing grooves of the opposite main surface being formed to be deviated in one direction with respect to each of a transverse direction and a longitudinal direction, and a distance between bottoms of the dividing grooves of the one main surface and bottoms of the dividing grooves of the opposite main surface being smaller than a distance between the bottoms of the dividing grooves of the one main surface and the opposite main surface and a distance between the bottoms of the dividing grooves of the opposite main surface and the one main surface.