An object is to provide a method for manufacturing a highly-reliable
semiconductor device with an improved material use efficiency and with a
simplified manufacturing process. The method includes the steps of
forming a conductive layer over a substrate, forming a light-transmitting
layer over the conductive layer, and selectively removing the conductive
layer and the light-transmitting layer by irradiation with a femtosecond
laser beam from above the light-transmitting layer. Note that the
conductive layer and the light-transmitting layer may be removed so that
an end portion of the light-transmitting layer is located on an inner
side than an end portion of the conductive layer. Before the irradiation
with a femtosecond laser beam, a surface of the light-transmitting layer
may be subjected to liquid-repellent treatment.