Patent ID: 7211903

Claim:
A semiconductor device comprising: a wiring board having a first main surface and a first back surface, wherein said first main surface is provided with a chip mounting area in its central part, a plurality of ring-shaped first bonding electrodes are formed in a first area surrounding said chip mounting area, a plurality of second bonding electrodes are formed in a second area surrounding said first area, and wiring for electrically connecting said first bonding electrodes with said second bonding electrodes is formed inside; a semiconductor chip having a second main surface and a second back surface, wherein said second back surface is so mounted over said wiring board as to be in contact with said chip mounting area and a plurality of electrodes are arranged over said second main surface; and a plurality of wires for electrically connecting said plurality of electrodes to respectively matching ones of said first bonding electrodes or said second bonding electrodes, wherein said plurality of first bonding electrodes are electrically connected to a power supply potential or a reference potential, wherein said plurality of second bonding electrodes are used for inputting or outputting signals, wherein said plurality of electrodes are arrayed in a plurality of rows along an outer circumference of said second main surface, and said electrodes included in a first row and said electrodes included in a second row positioned inside said first row within said second main surface are arranged in a zigzag pattern in a direction along said outer circumference of said second main surface, wherein said plurality of electrodes include a plurality of first electrodes electrically connected to said first bonding electrodes and a plurality of second electrodes electrically connected to said plurality of second bonding electrodes, and wherein, of said plurality of wires, a plurality of first wires electrically connecting said first bonding electrodes with said plurality of first electrodes have a diameter not smaller than a plurality of second wires electrically connecting said plurality of second bonding electrodes and said plurality of second electrodes.