Patent ID: 7026706

Claim:
An electronic package comprising at least one semiconductor chip mounted on an organic substrate, said at least one semiconductor chip having edge portions forming at least one corner point; said organic substrate having edge portions forming at least two corner points at distal edge portions thereof, whereby said at least one corner point of said at least one semiconductor chip is angularly rotated about a z-axis through a neutral point relative to said at least two corner points of said substrate substantially subtending a predetermined angular displacement between the corner points of said substrate and the at least one corner point of said at least one semiconductor chip so as to reduce warpage between said at least one semiconductor chip and said organic substrate caused by thermally-induced stresses generated therebetween at said corner points, wherein said at least one corner point on said at least one semiconductor chip is rotated in the z-axis through said neutral point from at least one corner point on said organic substrate by an angular displacement of about 45°, and wherein said neutral point coincides with a center point of said at least one semiconductor chip, and a maximum bending shear deformation of said electronic package occurs at least at one corner point of said organic substrate distant from said neutral point (DNP).