Patent ID: 9379040
Filing Date: 2016-06-28
CPC Classification: H01L

Claim Text:
1. A method of manufacturing a semiconductor device, comprising: step of electrically connecting a first electrode which is included in a semiconductor element, to a first coupling surface which is included in a first conductor, and electrically connecting a second electrode which is included in the semiconductor element and formed on a surface opposed to the first electrode, to a second coupling surface which is included in a second conductor; step of forming a first envelope portion by sealing the semiconductor element with a first insulative material; step of forming a first radiation surface on the first conductor and forming a second radiation surface on the second conductor by removing a part of the first envelope portion, a part of the first conductor and a part of the second conductor; step of forming a second envelope portion with a second insulative material having a higher coefficient of thermal conductivity than the first insulative material, such that the second envelope portion is in contact with the first radiation surface and the second radiation surface; and step of forming on the second envelope portion a surface which is parallel to the first radiation surface by removing a part of the second envelope portion.