Patent ID: 11862540
Assignee: STMICROELECTRONICS SDN BHD
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A frame, comprising:
a plurality of leadframe units arranged in a matrix, wherein each leadframe unit comprises:
a die pad; and
a plurality of tie bars connected to and extending between the die pad and a dam bar, wherein at least one tie bar of said plurality of tie bars includes a cut separating an internal tie bar portion of said least one tie bar from the dam bar, and wherein said internal tie bar portion of said least one tie bar is bent at a location between the die pad and the cut to form a bent tie bar portion providing a mold flow control structure;
wherein the bent tie bar portion extends linearly from said location of the bend in said internal tie bar portion of said least one tie bar to a location of the cut in said at least one tie bar; and
wherein a length of the bent internal tie bar portion from the location of the bend to the location of the cut is different in each leadframe unit of said plurality of leadframe units in the frame.