Patent ID: 6489178
Filing Date: 2002-12-03
Classification: B29C,B81C,H01L

Abstract:
A method of fabricating molded device by encapsulating a semiconductor chip having an integrated circuit including a plurality of micromechanical components, configured in a plane in the central area of said chip, and a plurality of bonding pads, disposed in peripheral areas of said chip, comprising the steps of:forming an electrically insulating substrate, having a plurality of conductive routing lines, first and second surfaces, and a plurality of terminals on said second surface, said terminals electrically connected with said routing lines, respectively; assembling said chip onto said first substrate surface; providing a mold for encapsulating said assembled chip, said mold having top and bottom halves; lining said top and bottom halves with a protective plastic film; loading said substrate including said assembled chip into said mold; introducing an encapsulation material into said mold; curing said encapsulation material at least partially, thereby forming a molded frame around said chip, while leaving empty space above said components, said frame having a flat surface in a plane parallel to said plane of said components; removing said substrate together with said encapsulated chip from said mold; depositing a chemical compound within said empty space for lubricating said micromechanical components; attaching a lid to said flat surface of said molded frame, thereby positioning said lid in a plane parallel to said plane of said components; and attaching an array of solder balls to said substrate terminals.