Patent ID: 7005720

Claim:
A semiconductor package with a photosensitive chip, comprising: a substrate having a core with a plurality of conductive traces formed on at least one surface of the core, each of the conductive traces having a terminal, wherein a solder mask layer is applied over the surface of the core and covers the conductive traces, allowing the terminals to be exposed to outside of the solder mask layer, and the solder mask layer is formed with an opening to expose a peripheral portion on the surface of the core; at least one photosensitive chip mounted on the substrate and electrically connected to the exposed terminals of the conductive traces; an encapsulation dam formed on the peripheral portion of the core and surrounding the chip, wherein the dam comprises a shoulder portion adjacent to and flush with the solder mask layer, and a protruded support portion surrounding the shoulder portion and having a height larger than a thickness of the chip; and a lid attached to the support portion of the dam for sealing the dam such that the chip is received in a space defined by the substrate, the dam and the lid.