COMPOSITE SUBSTRATE AND METHOD OF MANUFACTURING COMPOSITE SUBSTRATE

摘要

A composite substrate in which thermal stress and impact stress in a joined portion are relieved by a simple structure and its manufacturing method are provided. A frame body (20) joined to one major surface (12b) of a substrate body (12) comprises (1) a frame member (22) made of an insulating material, having a through hole (23) at the center, and extending, in the form of a frame, along the edges of the one major surface (12b) and (2) a plurality of connection members (30) each formed by bending a sheet metal and in which a first piece (32) and a second piece (36) are continuous with the respective ends of an intermediate piece (34). Each of the connection members (30) is so disposed on the frame member (22) that the first and second pieces face each other on both sides of the through hole (23). The first piece (32) and the second piece (36) of each of the connection members (30) are exposed on both major surfaces extending along the through hole (23) of the frame member (22), extended in such a direction that the first and second pieces of the connection member (30) face each other on both sides of the through hole (23), and their ends on the through hole (23) side are continuous with the respective ends of the intermediate piece (34). The intermediate piece (34) extends through the inside of the frame member (22).