Patent ID: 8853004
Filing Date: 2014-10-07
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a wiring board having a first surface and a second surface that is opposite to the first surface; (b) mounting a semiconductor chip over the first surface of the wiring board; (c) electrically coupling an electrode pad formed over the major surface of the semiconductor chip to an external terminal in the wiring board; (d) sealing the semiconductor chip with a resin-sealing body; and (e) separating part of a runner, which leads to the resin-sealing body and is formed over one of the first surface and the second surface of the wiring board, from the resin-sealing body, wherein the runner is formed by a first runner and a second runner whose one side is coupled to the first runner and the other side is coupled to the resin-sealing body, and wherein the (e) step further includes the steps of: (e1) mounting the wiring board over a table in such a way that: the one surface over which the runner is formed is oriented downward and the other surface, opposite to the one surface, is oriented upward, and part of the second runner is supported from the one surface side by a first supporting portion; and (e2) separating the runner from a middle of the second runner by pushing down, with a break pin, the first runner in the direction from the other surface side toward the one surface side while the resin-sealing body is in a condition of floating in the air.