Invention Application
US20160148877A1 QFN PACKAGE WITH IMPROVED CONTACT PINS 审中-公开
QFN封装具有改进的接触引脚

QFN PACKAGE WITH IMPROVED CONTACT PINS
Abstract:
According to an embodiment of the present disclosure, a method for manufacturing an integrated circuit (IC) device may include mounting an IC chip onto a center support structure of a leadframe, bonding the IC chip to at least some of the plurality of pins, encapsulating the leadframe and bonded IC chip, sawing a step cut into the encapsulated leadframe, plating the exposed portion of the plurality of pins, and cutting the IC package free from the bar. The leadframe may include a plurality of pins extending from the center support structure and a bar connecting the plurality of pins remote from the center support structure. The step cut may be sawn into the encapsulated leadframe along a set of cutting lines using a first saw width without separating the bonded IC package from the bar, thereby exposing at least a portion of the plurality of pins. The IC package may be cut free from the bar by sawing through the encapsulated lead frame at the set of cutting lines using a second saw width less than the first saw width.
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