Patent ID: 7751194
Filing Date: 2010-07-06
Classification: H01L,H05K

Abstract:
1. A circuit device, comprising: a case member; a first circuit board and a second circuit board incorporated into the case member and arranged in a way that the first circuit board is overlaid with the second circuit board; a first circuit element fixedly secured to a principal face of the first circuit board; a second circuit element fixedly secured to a principal face of the second circuit board, the first and second circuit boards being disposed so that the first circuit element faces the second circuit element; and a first sealing resin sealing the principal face of the first circuit board and a second sealing resin sealing the principal face of the second circuit board, wherein the first and second sealing resins define a hollow portion between them, and a communicating opening for allowing the hollow portion to communicate with an outside is provided in the case member.