A semiconductor spacer structure comprises in order a backgrinding tape
layer, a spacer adhesive layer, a semiconductor spacer layer, an optional
second spacer adhesive layer, a dicing tape layer. In a first method a
spacer wafer having first and second sides, a backgrinding tape layer and
a spacer adhesive layer between the first side and the backgrinding tape
layer, is obtained. The second side is background and secured to a dicing
tape. The backgrinding tape is removed and the resulting structure is
diced to create spacer/adhesive die structures. A second method
backgrinds the second side with the backgrinding tape layer at the first
side. A protective cover layer is secured to the second side with a
spacer adhesive layer therebetween. The backgrinding tape layer is
removed and the remaining structure is secured to a dicing tape with the
protective cover layer exposed. The protective cover layer is removed and
the resulting structure is diced thereby creating spacer/adhesive die
structures. The thickness of the second spacer adhesive layer may be
selected to accommodate an uneven support surface.