Package of an image sensor device

摘要

The present invention provides a package comprising a lead frame, which has a die pad and a plurality of leads located at the peripheral of the die pad. An image sensor chip has an active surface and a corresponding back surface. A plurality of bonding pads are on the active surface. A plurality of leads are electrically connected from the bonding pads to the inner leads. The image sensor chip, the die pads and the inner leads are encapsulated with a transparent molding material. A cavity is formed on a surface of the transparent molding material corresponding to the active surface. The area of the cavity, which is large enough just to cover the chip of the image sensor, has a smooth surface after a polishing process.