Patent ID: 7746658

Claim:
A circuit device, comprising: a circuit board having on an upper surface thereof a built-in hybrid integrated circuit constituted by a conductive pattern and a circuit element; a case member including four side wall parts forming a frame-like shape and in contact with the circuit board so as to form on the upper surface of the circuit board a space in which the circuit element is sealed; a sealing resin to coat the conductive pattern and the circuit element on the upper surface of the circuit board and to fill in the space; a lead fixed to a pad composed of the conductive pattern and extending to the outside of the sealing resin; and a supporting part arranged at a corner of the case member so as to make continuous inner walls of the respective side wall parts with each other, wherein a lower surface of the supporting part is attached to the upper surface of the circuit board and the supporting part is covered by the sealing resin.