Patent ID: 6384472
Filing Date: 2002-05-07
Classification: H01L

Abstract:
A leadless image sensor package comprising:a lead frame, having a die pad and a plurality of leads disposed at the periphery of the lead frame wherein the die pad has a top surface and a bottom surface and each of the leads has a wire-bonding portion, the lead frame also comprises a first surface and a corresponding second surface, step-like structures are formed at the wire-bonding portion of the leads and at the periphery of the die pad; a molding compound, disposed on the first surface of the lead frame and surrounding the outer edge of the lead frame, filling a clearance between the die pad and the wire-bonding portion of the leads, exposing the wire-bonding portion of the leads on the first surface, and forming a â€œchip containing spaceâ€  by combining together with the lead frame; a chip, having an active surface and a corresponding back surface wherein the active surface has a plurality of bonding pads, and the chip is set in the â€œchip containing spaceâ€  with the back surface of the chip attached to the top surface of the die pad; a plurality of wire, electrically connected respectively to the bonding pads and the first surface of the wire-bonding portion; and a transparent lid, disposed on the active surface to seal the â€œchip containing spaceâ€ .