Patent ID: 7239009

Claim:
A lead frame structure, comprising: at least one die pad for mounting a semiconductor chip thereon; a plurality of suspension pins mechanically connected to said die pad; and a plurality of connection bars, each having an end region mechanically connected with one of said plurality of suspension pins for mechanically supporting said at least one die pad via said plurality of suspension pins; wherein said end region of each of said connection bars has a penetrating opening portion which provides a mechanical flexibility to said end region and which allows said end region to be deformed toward said one of said plurality of suspension pins upon application of a tensile stress to said suspension pin; wherein said penetrating opening portion comprises a single slender-shaped continuously extending opening portion which extends along a longitudinal center axis of said connection bar; and wherein said single slender-shaped continuously extending opening portion comprises an open-type notch having an open end and an opposite closed end.