Patent ID: 7419840

Claim:
A method of manufacturing a semiconductor device, comprising: forming a portion defining a first opening, between a portion defining a second opening and a portion defining a third opening, on a surface of a cover by protrusions; forming the portion defining the second opening to have a translucent portion on the surface of the cover by protrusions; forming the portion defining the third opening on the surface of the cover by protrusions; forming an optical unit and an electrode on a semiconductor substrate; applying an adhesive inside the first opening; fixing the cover onto the semiconductor substrate to provide the first opening on a portion of the semiconductor substrate other than the optical unit and the electrodes, to provide the optical unit in the second opening, and to provide the electrodes in the third opening, and wherein the second opening and the third opening are sealed from the adhesive in the first opening; and cutting the portion defining the third opening to divide the semiconductor substrate into individual pieces.