Patent ID: 7038321
Filing Date: 2006-05-02
Classification: G01L,H01L

Abstract:
1. A circuit assembly comprising: a substrate having conductors with bonding sites, at least two sets of the bonding sites being spaced apart from each other to define an intermediate surface region therebetween; a circuit device attached to the bonding sites with solder connections, the solder connections being present on a surface of the circuit device that faces the substrate and on which a movable element is present, the movable element overlying the intermediate surface region of the substrate; an underfill material between the circuit device and the substrate and encapsulating the solder connections; and at least one dam separating the underfill material from the intermediate surface region of the substrate so that the underfill material does not contact the movable element, the at least one dam defining a bidirectional venting path between the movable element of the circuit device and the intermediate surface region of the substrate.