Patent ID: 7532378

Claim:
A method for manufacturing a semiconductor device, comprising: forming a plurality of island shape semiconductor layers each electrically connected to a source electrode and a drain electrode over a substrate, forming a first interlayer insulating film over the plurality of island shape semiconductor layers; forming a plurality of gate electrodes over each of the plurality of island shape semiconductor layers with the first interlayer insulating film interposed therebetween; forming a second interlayer insulating film over the plurality of gate electrodes; providing a resist over the second interlayer insulating film; deflecting each of a plurality of laser beams divided by a diffractive optical element, by each of a plurality of micromirrors; irradiating the resist with each of the plurality of laser beams; developing the resist; and etching the first interlayer insulating film and the second interlayer insulating film to form a contact hole selectively, wherein each of the plurality of laser beams is converged in a central portion of each of the plurality of micromirrors.