Patent ID: 8014154

Claim:
A circuit substrate comprising: a substrate having a first edge adjacent to a second edge and the first edge also adjacent to a third edge, the first edge and second edge meeting at a first corner, thereby forming a first corner region and the first edge and third edge meeting at a second corner, thereby forming a second corner region; and a warpage preventing pattern disposed on the substrate, the warpage preventing pattern comprising a first pattern including a first plurality of members at the first corner region of the substrate and a second pattern including a second plurality of members at the second corner region of the substrate, wherein each member of the first plurality of members is part of the first pattern disposed on the substrate and extends diagonally from the first edge to the second edge, wherein each member of the second plurality of members is part of the second pattern disposed on the substrate and extends diagonally from the first edge to the third edge, and wherein the first pattern is disconnected from the second pattern.