Patent ID: 6448184
Filing Date: 2002-09-10
Classification: H01L,H05K,Y10S

Abstract:
A method of making conductive regions on a substrate for receiving contacts of surface mounted semiconductor packages or devices comprising,providing a substrate base capable of withstanding temperatures exceeding those found in a diamond film gas phase deposition reactor without deformation of the substrate base, placing the substrate base in a heated diamond film gas phase deposition reactor, introducing molecular hydrogen, a carbon bearing gas, and a dopant source into the reactor at a temperature conducive to the deposition of a conductive polycrystalline diamond layer on the substrate base, and etching the polycrystalline diamond layer down to the substrate base in some regions and not other regions such that polycrystalline diamond layer regions that have not been etched correspond to contacts of surface mounted semiconductor packages or devices and are able to directly receive said contacts by pressure contact.