Patent ID: 6552267
Filing Date: 2003-04-22
Classification: H01L

Abstract:
A microelectronic assembly comprising:a microelectronic element; a first substrate having a first face and an opposite second face; a stiffening member having a first face, a second face, an outer perimeter side and an inner perimeter side, and having a plurality of grooves formed in at least one of the first face and second face of the stiffening member, said grooves being formed therein so that the stiffening member has a degree os flexibility sufficient to overcome and accommodate stresses induced in the manufacturing process of the microelectronic assembly; and the microelectronic element being secured to the first face of the first substrate, and the stiffening member being secured to the first face of the first substrate so that the inner perimeter side is spaced a distance from the microelectronic element.