Patent ID: 7563343

Claim:
A film lamination method for laminating a film on a principal surface of a semiconductor substrate by using a rotatable roller having a diameter of about 20-50 mm, a heat-generating part therein and an elastically deformable resin layer on an outer surface thereof, the film lamination method comprising: pressing the roller onto the film placed on the principal surface of the semiconductor substrate while generating heat by the heat-generating part; rolling the roller on the film so as to laminate the film on the semiconductor substrate by heat only from the heat-generating part while absorbing unevenness of the outer surface of the roller and unevenness of a surface of the film by elastic deformation of the elastically deformable resin layer; wherein said roller presses the film with a pressing load of 10-20N; wherein the heat-generating part is heated to about 200° C.; and about 5 seconds after the roller is pressed to an area of the principal surface of the semiconductor substrate said area returns to a temperature about equal to the area's temperature prior to contact with the roller.