Patent ID: 6576498
Filing Date: 2003-06-10
Classification: H01L

Abstract:
A method of producing a semiconductor package comprising the steps of:(a) providing a first semiconductor chip, a second semiconductor chip and a lead frame of a plate shape having a first surface side and a second surface side opposite to said first surface side, each of said first and second semiconductor chips having a main surface, a rear surface opposite to said main surface, and an integrated circuit and bonding pads formed on said main surface, said lead frame having signal leads, fixed potential leads and a suspending lead for supporting said first and second semiconductor chips; (b) attaching said first semiconductor chip to said lead frame, such that said main surface of said first semiconductor chip is adhered to said second surface side of said suspending lead, and such that one end of said signal leads and said fixed potential leads are disposed at the vicinity of a side surface of said first semiconductor chip and are spaced from said first semiconductor chip; (c) electrically connecting said bonding pads of said first semiconductor chip to said signal leads and said fixed potential leads by first bonding wires respectively, such that one end of said first bonding wires are contacted with said first surface side of said signal leads and said fixed potential leads respectively; (d) after the step (c), attaching said second semiconductor chip to said lead frame with said first semiconductor chip, such that said rear surfaces of said first and second semiconductor chips are adhered to each other; (e) after the step (d), electrically connecting said bonding pads of said second semiconductor chip to said signal leads and said fixed potential leads by second bonding wires respectively, such that one end of said second bonding wires are contacted with said second surface side of said signal leads and said fixed potential leads respectively; (f) sealing said first and second semiconductor chips, said first and second bonding wires, inner lead portions of said signal leads and said fixed potential leads and a portion of said suspending lead by a resin member, outer lead portions of said signal leads and said fixed potential leads extending outwardly from said resin member.