Abstract:
PROBLEM TO BE SOLVED: To reduce crosstalk noise occurring between signal wiring lines.SOLUTION: In a first conductor layer 101, first and second signal wiring patterns 111 and 112 are formed. In a second conductor layer 102 that is a surface layer, a first pad 121 electrically connected to the first signal wiring pattern 111 through the first via 131 and a second pad 122 electrically connected to the second signal wiring pattern 112 through a second via 132 are formed. A third conductor layer 103 is disposed between the first conductor layer 101 and the second conductor layer 102, and an insulator 105 is interposed among the conductor layers. In the third conductor layer 103, a first via pad 141 electrically connected to the first via 131 is formed. The first via pad 141 is overlapped with the second pad 122 as viewed from a direction perpendicular to a substrate surface 100a, and has a facing portion 141a that faces the second pad 122 via the insulator 105.
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasonic flip-chip mounting method with les variance in the electrode junction state between a semiconductor chip and a substrate. SOLUTION: The ultrasonic flip-chip mounting method includes a step of forming a plurality of bump electrodes (106), on one main surface of a semiconductor chip (100) and a step of respectively bringing the bump electrodes (106) into contact with the corresponding conductor patterns (132) on the substrate and for applying ultrasonic vibration to the semiconductor chip, where the electrode patterns (132) are oriented, in a direction oblique to the ultrasonic vibration direction V. In this way, an effective width W1 (W1>W) is obtained which can contribute to the ultrasonic vibration of the electrode patterns (132). COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an arrangement structure reducing noise due to a stacked ceramic capacitor mounted on a printed circuit board. SOLUTION: A unit arrangement structure 100 is composed of four stacked ceramic capacitors 101, 103, 105, 107. Two stacked ceramic capacitors 101, 103 out of the four stacked ceramic capacitors are arranged such that capacitor axes are in parallel with an axis 201; and the other two stacked ceramic capacitors 105, 107 are arranged such that capacitor axes are in parallel with an axis 203 crossing the axis 201. By such arrangement structure, noise can be effectively suppressed even by single-sided mounting. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wiring board which includes pads electrically connected to chip connecting pads through conductive wires, the wiring board being reduced in size in a surface direction of the wiring board by efficiently arranging the pads electrically connected to the chip connecting pads. SOLUTION: The wiring board includes a resin member 12 formed in a plate shape, chip connecting pads 13 each having a connection surface electrically connected to the electrode pads provided to a semiconductor chip and incorporated in the resin member 12, pads 14 incorporated in the resin member 12 at a part positioned outside a formation region of the chip connecting pads 13, routing wiring 17 connected to the pads 14, and the conductive wire sealed with the resin member 12 and electrically connecting the chip connecting pads 13 and the pads 14 to each other, the pads 14 being disposed on a plurality of straight lines B 1 parallel to a first direction. COPYRIGHT: (C)2010,JPO&INPIT