Patent ID: 7060581

Claim:
A method for manufacturing a semiconductor device, comprising: forming a first impurity implanted layer in a semiconductor substrate by selectively implanting ions of a first impurity; forming a dummy pattern on a surface of the semiconductor substrate above the first impurity implanted layer; forming a second impurity implanted layer in the semiconductor substrate by implanting ions of a second impurity using the dummy pattern as a mask; burying an interlevel insulating film on the surface of the semiconductor substrate so as to planarize the interlevel insulating film at the level of the dummy pattern, a difference in refraction indexes of the dummy pattern and the interlevel insulating film having a maximum of one; activating ions of the first and second impurities by irradiating the surface of the semiconductor substrate with pulsed light having a pulse width in a range of approximately 0.1 ms to 100 ms; forming an opening by selectively removing the dummy pattern; and forming a gate insulating film and a gate electrode on the exposed surface of the semiconductor substrate.