Kyocera Corporation

Hisayoshi Wada

Makoto Shiroshita

Hiroki Matsuwaka

A semiconductor element mounting board includes: a circuit conductor disposed on the insulating board, a plurality of semiconductor element connection pads connected to the circuit conductor, a semiconductor element mounted on a surface of the insulating board, a first capacitor and a second capacitor disposed on a surface or an inside of the insulating board, and a first conductor path configured to connect the first capacitor between the semiconductor element connection pads, and a second conductor path configured to connect the second capacitor between the semiconductor element connection pads; and an inductance of the first conductor path is smaller than an inductance of the second conductor path, and capacitance of the first capacitor is smaller than capacitance of the second capacitor, and an internal inductance of the first capacitor is smaller than an internal inductance of the second capacitor.

Semiconductor element mounting board

A wiring board includes an insulating substrate having a plurality of laminated insulating layers and a mounting part in one surface of the insulating substrate, a large number of semiconductor element connection pads, a large number of external connection pads, and a solid pattern extending from a region corresponding to the mounting part to the peripheral portion of the insulating substrate, and including a straight line shaped current path without intervention of gas vent openings.

Wiring board

A wiring board including an insulating board formed such that an inner insulating layer is laminated under a front insulating layer, a pair of semiconductor element connection pads for a signal, formed on the front insulating layer, and a pair of strip-shaped wiring conductors formed on the inner insulating layer, having connection ends connected to the pair of pads for the signal under the pair of pads through via holes, and having parallel extending portions extending to an outer peripheral portion from the connection ends on the inner insulating layer in parallel to each other, where a part from the connection end to one part of the parallel extending portion has a width smaller than a width of a residual part, and length equal to or less than one-sixteenth of a wavelength of a signal transmitting in the pair of strip-shaped wiring conductors.

Growing community of inventors

Kyoto, Japan

Hisayoshi Wada