Abstract: A lead frame for a quad flat no-lead package includes a plurality of units arranged in a matrix manner and each having four comers. Each of the corners extends outwards to define an attaching portion for attachment to a UV tape such that four sides of each of the units won't fly off when the sides are cut off.

Abstract: A lead frame for a quad flat no-lead package includes a plurality of units arranged in a matrix manner and each having four comers. Each of the corners extends outwards to define an attaching portion for attachment to a UV tape such that four sides of each of the units won't fly off when the sides are cut off.

Abstract: A lead frame includes a plurality of units arranged in a matrix manner. Each unit has an external frame defining an accommodation area, a die mount pad disposed in the accommodation area of the external frame, a plurality of leads connected with the external frame and arranged around the die mount pad, a short bar having two ends respectively electrically connected with the die mount pad and one of the leads, and a plurality of support bars each having a straight section connected with the external frame, and a continuous curved section connected with the die mount pad. By means of the continuous curved sections of the support bars, thermal deformation and/or displacement of the lead frame can be prevented.