Patent ID: 9659858
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A component, comprising: a substrate having a front surface and a rear surface remote therefrom, the substrate having a coefficient of thermal expansion (CTE) less than 10 ppm/° C.; an opening extending from the rear surface towards the front surface, the opening defining an inner surface between the front and rear surfaces; and an electrically conductive via extending within the opening, the conductive via including a first electrically conductive layer overlying the inner surface and a second electrically conductive region overlying the first conductive layer and electrically coupled to the first conductive layer, the second conductive region having a CTE greater than a CTE of the first conductive layer, the first electrically conductive layer having a thickness at least 10% of a diameter of the conductive via, wherein the substrate has a transition surface between a portion of the opening and at least one of the front or rear surfaces.