Patent ID: 9190385
Filing Date: 2015-11-17
Classification: H01L

Abstract:
1. A method of making packages comprising: providing a leadframe strip that includes a plurality of leadframes, each of the leadframes having a plurality of leads surrounding a die paddle; etching a surface of each of the leadframes to form a recessed region extending over an entire surface of the die paddle and over a portion of each of the leads closest to the die paddle, wherein each of the leads of each leadframe has a lead tip that is connected to the die paddle during the etching; thereafter plating the leadframe strip to prepare the die paddle and the leads of each leadframe for die connection; thereafter isolating each of the lead tips from the die paddle of each leadframe; adhering a tape to a bottom side of the leadframe strip including the leads and the die paddle of each leadframe; attaching a die to a top side of the die paddle of each leadframe; forming ball bumps on each of the lead tips of each leadframe; and within each leadframe, connecting the die to the ball bumps.