Patent ID: 7821115

Claim:
A tape carrier package comprising: a tape carrier having lead patterns fowled on a tape base thereof, said lead patterns being made of an electro-conducting material, said tape base being made of an insulating material; and a semiconductor device mounted on said tape carrier and having signal input and output electrode patterns disposed on peripheral portions of a surface of the semiconductor device on the same side as a first surface of said tape base; wherein said semiconductor device includes heat dissipating electrode patterns, each of which is located on a peripheral portion, of said surface of the semiconductor device at a position where said each of said heat dissipating electrode patterns does not interfere with said electrode patterns; each of said lead patterns is electrically connected to a corresponding one of said electrode patterns; heat dissipation patterns are formed on said tape carrier, each of which is disposed at a position on the first surface of said tape base where said each of said heat dissipation patterns does not interfere with said lead patterns, said each of said heat dissipation patterns being electrically and thermally connected to a corresponding one of said heat dissipating electrode patterns of said semiconductor device, said each of said heat dissipation patterns being made of an electro-conductive material; and wherein said heat dissipation patterns have a surface area broader than that of said lead patterns.