Patent ID: 6984879

Claim:
A structure for detecting the orientation of a lead frame comprising: the lead frame comprising: a gate; a support bar; a die pad, the gate serving to make resin flow towards the die pad during molding; and an unsymmetrical part selected from the group consisting of a dent part of the gate and a plated layer on the gate; a clamp, the unsymmetrical part being visible through an observation hole of the clamp; and a camera and pattern recognition system comprising: a first lead eye box and a first lead eye point on the unsymmetrical part of the lead frame, the first lead eye box comprising an image of a first area of the lead frame and the first lead eye point being a specific point within the first lead eye box; and a second lead eye box and a second lead eye point on the support bar of the lead frame, the second lead eye box comprising an image of a second area of the lead frame and the second lead eye point being a specific point within the second lead eye box.