Patent ID: 8605277
Filing Date: 2013-12-10
Classification: G01B,G01N,H01L

Abstract:
1. A method of inspecting a semiconductor device mounted with a semiconductor chip over a wiring substrate, comprising the steps of: (a) providing the semiconductor device in which a plurality of external terminals are provided over a rear surface opposite to a front surface over which the semiconductor chip of the wiring substrate is mounted; and (b) measuring flatness of the external terminals and determining whether the semiconductor device is defective or non-defective, wherein, in the step (b), in a case where the wiring substrate warps upward with the rear surface of the wiring substrate facing downward, a direction toward the protrusion side is called a “direction of (+)” and in a case where the wiring substrate warps downward with the rear surface of the wiring substrate facing downward, a direction toward the protruding side is called a “direction of (−),” a flatness standard is formed in which a permissible range of the flatness in the direction of (+) is smaller than a permissible range of the flatness in the direction of (−) and the semiconductor is inspected with use of the flatness standard.