Patent ID: 7755183

Claim:
A wiring board for supporting a semiconductor chip, the wiring board comprising: a substrate having mutually perpendicular length, width, and thickness directions; and a conductive pattern formed on the substrate, wherein the conductive pattern includes first wiring pattern portions with a first length along the length direction and elongated rectangular shaped second wiring pattern portions with a second length along the length direction, the second wiring pattern portions having one end portion connected to the first wiring pattern portion and the second wiring pattern portions extending in the length direction to a peripheral portion of the substrate, the first wiring pattern portions are formed on an area of the substrate in a plane defined by the length and width directions in which the semiconductor chip is mounted on the substrate, the second wiring pattern portions comprising first parts with said one end portion formed on the first wiring pattern portions such that individual bump electrodes are above respective individual first parts in the thickness direction, and second parts that are formed over the substrate to extend along the length direction beyond the first wiring pattern portions, the width of the second wiring pattern portions is larger than the thickness of the second wiring pattern portions, and the width of the first wiring pattern portions is not larger than the thickness of the first wiring pattern portions.