Patent ID: 6261864
Filing Date: 2001-07-17
Classification: H01L

Abstract:
A method of making a low-pin-count chip package comprising the steps of:providing a sheet carrier having a metal layer on one surface thereof;applying a photoresist layer on the metal layer of the carrier sheet;photoimaging and developing the photoresist layer so as to expose predetermined portions of the metal layer;forming a metal coating on the exposed portions of the metal layer;stripping the remaining photoresist;etching areas on the metal layer without protection of the metal coating so as to form a plurality of connection pads having a concave profile;attaching a semiconductor chip onto the sheet carrier;electrically coupling the semiconductor chip to the connection pads;forming a package body over the semiconductor chip and the connection pads;removing the sheet carrier; andforming a metal flash on the lower surface of the connection pads exposed from the package body.