Patent ID: 6175150
Filing Date: 2001-01-16
Classification: H01L

Abstract:
A plastic-encapsulated semiconductor device comprising:an electrically-conductive island having a chip-mounting area;an IC chip fixed on said chip-mounting area of said island;leads electrically connected to bonding pads of said chip through bonding wires;a plastic package for encapsulating said island, said chip, said bonding wires, and inner parts of said leads;said package having an approximately flat bottom face;outer parts of said leads protruding from said package and located in approximately a same plane as said bottom face of said package;said island having an exposition part contained within a periphery of said plastic package, said exposition part exposed from said package at a location excluding said chip-mounting area, wherein the exposed surface area of said exposition part is large enough to dissipate heat away from said plastic-encapsulated semiconductor device;a lower face of said exposition part of said island located in approximately a same plane as said bottom face of said package;said chip and said chip-mounting area of said island being entirely buried in said package; anda part of said island excluding said chip-mounting area being bent toward said bottom face of said package to be exposed therefrom.