Patent ID: 7148126

Claim:
A semiconductor device manufacturing method comprising: a first step of preparing a semiconductor substrate ( 11 ) on which multiple semiconductor devices are formed and thinning the semiconductor substrate ( 11 ); a second step of adhering a reinforcing member ( 13 ) having an opening to one surface of the semiconductor substrate ( 11 ) thinned in the first step with an adhering material having a state; a third step of forming a metallic film ( 15 ) for forming an electrode provided in the semiconductor device on a portion of one surface of the semiconductor substrate ( 11 ) to which the reinforcing member ( 13 ) is adhered, the portion being exposed through the opening of the reinforcing member or the other surface of the semiconductor substrate ( 11 ); and a fourth step of removing the reinforcing member ( 13 ) from the semiconductor substrate ( 11 ) and dicing the semiconductor substrate ( 11 ); and wherein the adhering material ( 13 , 25 ) is formed of material which changes its state at temperature higher than a processing temperature in the third step.