摘要:
The plurality of electrical leads of the semiconductor device have a connection portion exposed to the outer periphery on the back surface of the seal section and a thickness reduced portion formed to be thinner than said connection portion. The connection portion is provided with an inner groove and an outer groove in a wire bonding surface as disposed within the seal section of the connection portion. Wires are provided for electrical connection between the leads and pads of the semiconductor chip. The thickness reduced portion of the leads is covered by or coated with a sealing resin material while causing the wires to be contacted with the connection portion at specified part lying midway between the outer groove and inner groove to permit the thickness reduced portion of leads and the outer groove plus the inner groove to prevent the occurrence of any accidental lead drop-down detachment.
摘要:
A non-leaded resin-sealed semiconductor device is manufactured by the steps of providing a conductive flat substrate (metal plate) of copper plate or the like, fixing semiconductor elements respectively to predetermined positions on the principal surface of the substrate by an insulating adhesive, electrically connecting electrodes on the surfaces of the semiconductor elements with predetermined partition parts of the substrate separate from the semiconductor elements by conductive wires, forming an insulating resin layer on the principal surface of the substrate to cover the semiconductor elements and wires, selectively removing the substrate from the rear of said substrate to form electrically independent partition parts whereof at least some are external electrode terminals, and selectively removing said resin layer to fragment the device into regions containing the semiconductor elements and the plural partition parts around the semiconductor elements. Thus, there is provided a compact non-leaded semiconductor device having a large number of electrode terminals.