Patent ID: 6078104
Filing Date: 2000-06-20
Classification: H01L

Abstract:
A carrier film in which a plurality of inner leads to be connected to electrodes of an integrated circuit element are disposed to protrude into a connection hole defined in a thin, flexible heat resistant resin film, the inner leads extending on the film to define wire leads, the wire leads being directly connected to external electrodes disposed in a plane on one surface of the thin, flexible heat resistant resin film, the carrier film comprising:a first region adjacent an area in which the integrated circuit element is disposed;a second region external to and surrounding at least a portion of the first region, the connection hole defined in a border area between the first region and the second region along a portion of the integrated circuit element, the external electrodes provided on the first region and the second region, and the external electrodes on the first region and the second region disposed in a common matrix, wherein the thin, flexible heat resistant resin film has a thickness of 25 micro-millimeters to 125 micro-millimeters and the wire leads are made from material containing copper, only opposing surfaces of the integrated circuit element and a portion the thin, heat flexible resistant resin film adjacent the integrated circuit element and the area therebetween are sealed by resin; and the connection hole is formed to have a width W that is defined by W=(P-D) to (2P-D), where D is a diameter of the external electrode and P is a pitch between adjacent ones of the external electrodes, the connection hole also filled with resin.