Patent ID: 7768082
Filing Date: 2010-08-03
Classification: G06K,H01L

Abstract:
1. A surface-shape sensor comprising: a semiconductor substrate; an interlayer insulating film formed over the semiconductor substrate; a first moisture-barrier insulating film formed on the interlayer insulating film; a cap insulating film formed on the first moisture-barrier insulating film; a first hole formed in the interlayer insulating film going through the cap insulating film and the first moisture-barrier insulating film; a second hole formed in the interlayer insulating film going through the cap insulating film and the first moisture-barrier insulating film, wherein the second hole couples electrically to the semiconductor substrate and the first hole couples to a source/drain region in the semiconductor substrate; a first detection-electrode film formed on the cap insulating film and inside and around the first hole; a second detection-electrode film formed on the cap insulating film and inside and around the second hole, wherein the first detection-electrode film and the second detection-electrode film are independent each other; a hollow formed on the cap insulating film between the first detection-electrode film and the second detection-electrode film; a cover insulating film formed inside and around the first hole and the hollow; a second moisture-barrier insulating film formed on the cover insulating film; and a protection insulating film formed on the second moisture-barrier insulating film and having a window on the first detection electrode film.