A method is disclosed for forming semiconductor packages by a process of
punching and cutting the packages from a panel of integrated circuits.
During an encapsulation process for encapsulating the packages in a
molding compound, portions of the panel may be left free of molding
compound. Portions of the panel left free of molding compound may
subsequently be punched from the panel. These punched areas may define
chamfers, notches or a variety of other curvilinear, rectilinear or
irregular shapes in the outer edges of the finished semiconductor
package. After the panel is punched, the integrated circuits may be
singulated. By punching areas from the panel, and then cutting along
straight edges, a simple, effective and cost efficient method is
disclosed for obtaining finished semiconductor packages of a variety of
desired shapes.