Patent ID: 7274098

Claim:
A chip packaging structure without leadframe, comprising: a bare chip being provided on at least a predetermined surface with a plurality of contacts; an adhesive layer being provided with an inner connecting window area corresponding to said contacts on said bare chip; a plurality of lead wires, each of which has an inner and an outer end; and a fixing layer being provided at predetermined positions with outer connecting window areas, in which external conducting bodies are implanted; and said adhesive layer, said lead wires, and said fixing layer being sequentially assembled to said predetermined surface of said bare chip having said contacts provided thereon, such that said lead wires are sandwiched between said adhesive and said fixing layer with said inner ends of said lead wires electrically connected to said contacts on said bare chip via said inner connecting window area on said adhesive layer, and said outer ends of said lead wires extended to said outer connecting window areas on said fixing layer to electrically connect to said external conducting bodies implanted in said outer connecting window areas, each said outer end of said lead wires being formed in a planar undulating contour for increasing a contact area with a corresponding one of said external conducting bodies.