Patent ID: 9161438
Filing Date: 2015-10-13
Classification: H01R,H05K,Y02P

Abstract:
1. A stress buffer layer comprising: a plate-like base material made of an anodic oxide of a valve metal that has been subject to anodic oxidation, the base material having a top surface and a bottom surface each covered by a pair of insulating material layers made of an insulating material having a Young's modulus smaller than the anodic oxide of the valve metal, the base material having many through holes penetrating through the top surface and the bottom surface which are formed during the anodic oxidation of the valve metal; and an internal electrode filled in the many through holes and conductively connected directly or indirectly to an electronic component, wherein both ends of the internal electrode are formed so as to be substantially on the same plane as the top and bottom surfaces of the base material at a point in time immediately before the internal electrode is connected to the electronic component.