Patent ID: 7268417
Filing Date: 2007-09-11
Classification: H01L

Abstract:
1. A card-type electronic circuit device comprising: an electronic component provided with a plurality of electrodes; a card-type substrate having an upper surface on which the electronic component is mounted; a plurality of electronic connectors disposed on the upper surface of the substrate and connected to the respective electrodes of the electronic component; a plurality of external electrodes disposed on the upper surface of the substrate along one of outer edges of the substrate and connected to the respective electric connectors through respective conductor lines; a solder resist formed on the upper surface of the substrate except for the area in which the external electrodes are provided, the solder resist surrounding the area in which the electronic component end the electric connectors are disposed, with an opening being formed above the electronic component end the electric connectors; a sealing resin that seals the electronic component and the electric connectors without covering the external electrodes, the sealing resin extending on an inner peripheral part of the solder resist; and an insulating protrusion that is provided across an upper surface of each external electrode and arranged between the sealing resin and the one outer edge of the substrate; wherein the upper surfaces of the external electrodes are partitioned by the protrusion into a first area that is located on the sealing resin side and a second area that is located on the side opposite to the first area, with an upper surface of both of the first and second areas being exposed without being covered with the sealing resin.