Abstract:
A method for bonding a semiconductor chip to a lead frame in a LOC type semiconductor package in which a plurality of inner leads are bonded to an active surface of the semiconductor chip. A semiconductor chip is prepared with a partially-cured polyimide layer on the active surface. One or more strips of polyimide tape is attached to the inner leads. The semiconductor chip is attached to the inner leads by making an intermediate pressure bond between the polyimide tape and the partially-cured polyimide coating layer on the active surface. The polyimide coating layer is then cured.
Abstract:
A process for producing semiconductor devices using ultraviolet sensitive tape including the steps of forming a plurality of chips on a first surface of a semiconductor wafer, adhering an ultraviolet sensitive tape to the first surface of the semiconductor wafer, back lapping a second surface of the wafer, opposite to the first surface, and irradiating the ultraviolet sensitive tape with ultraviolet rays to release the ultraviolet sensitive tape from the wafer.
Abstract:
A method for manufacturing semiconductor chip package comprising steps of: (a) preparing a lead frame which comprises a pair of opposing side rails which have a plurality of through holes on their upper surface; a die pad onto which a chip will be mounted; a pair of rows of leads, each row being disposed at both sides of the die pad at a distance; and tiebars for mechanically and integrally connecting said die pad to said side rails; (b) filling a resin compound between leads and curing the resin compound to make dambars; (c) attaching said chip to an upper surface of said die pad, and electrically connecting said chip to leads; (d) encapsulating said chip, said die pad, said dambars, a part of said leads and a part of said tiebars to give a package body which is still attached to said lead frame; and (e) cutting said tiebars from lead frame to separate an individual package; and (f) forming leads extending from the package to have an appropriate bend shape is provided.