Patent ID: 9349612
Filing Date: 2016-05-24
CPC Classification: H01L,H05K

Claim Text:
1. A lead frame, comprising: a plurality of unit lead frames arranged in a matrix; a plurality of leads aligned along sides of each of the plurality of unit lead frames, a rear surface of the leads being exposed; a connecting bar via which the leads of adjacent ones of the plurality of unit lead frames are connected, the connecting bar including a longitudinal connecting bar, a transverse connecting bar, and a crossing part at which the longitudinal connecting bar and the transverse connecting bar cross each other; a dicing part including the connecting bar and a part of the leads, to be cut along a dicing line; a half-etching part formed along the dicing part, and being smaller in width than the dicing part; wherein each of the surrounding leads that are closest to the crossing part and provided on either side of both the longitudinal connecting bar and the transverse connecting bar, together, defines an outermost boundary of a strengthened region; and a strength retention part formed in the half-etching part and extended from the crossing part so as to be positioned entirely within the strengthened region.