Denso Corporation

Yuuki Sanada

Norihisa Imaizumi

Shinya Uchibori

Masayuki Takenaka

Takeshi Ishikawa

Kengo Oka

Toshihiro Nakamura

Tasuke Fukuda

Takashi Yoshimizu

Masaji Imada

Eiji Yabuta

Nobumasa Handa

Keitarou Nakama

An electronic device includes a circuit board with an insulating substrate, a wiring at the substrate, an electronic component mounted at the substrate and electrically connected to the wiring, at least one through hole through the substrate from one surface to an opposite surface of the one surface of the substrate, and a conductive member arranged at a surface of the through hole and electrically connected to the wiring; and further includes: a sealing resin; and a cap including an annular connection with a part connected to the substrate and a recess recessed from the annular connection. Furthermore, in the cap, at least a part of the connection is connected to the substrate, the cap being sealed integrally with the electronic component by the sealing resin while arranging a space communicating with the through hole; and a terminal is inserted into the through hole and electrically connected to the wiring.

Electronic device, and electronic structure provided with electronic device

In a substrate, at least one lateral surface between one surface and another surface is a cut surface that is cut together with mold resin. The mold resin, which is cut together with the substrate, is provided with a surface that is flush with the cut surface. A portion of the mold resin constituting the surface flush with the cut surface has a surface that is joined to the surface flush with the cut surface and parallel to the one surface of the substrate; this portion is thinner than a portion that seals electronic parts. Consequently, the mold resin is cut with a dicing blade brought into contact with a surface parallel to the one surface of the substrate.

Electronic device and method for manufacturing same

In an electronic device, a heat generating element is connected directly to an electrically-conductive joining material that is the start point of the heat dissipation path on the one surface of the substrate, and the other surface of the substrate is provided by an other surface side insulating layer. An electrically-conductive other surface side electrode connected to an external heat dissipation member is disposed on the surface of the other surface side insulating layer right under the heat generating element. On the other surface side of the substrate, an other surface side inner layer wire that is the end point of the heat dissipation path extends to the other surface side insulating layer and is insulated electrically from the other surface side electrode through the other surface side insulating layer.

Electronic device

In a printed wiring board, a first inner layer wiring line is formed on one surface of a wiring line formation layer, a resin film made of electric insulation resin is formed on an area other than the first inner layer wiring line formed on the wiring line formation layer. The resin film and the first inner layer wiring line have the same plane surface. A second wiring line is formed on the resin film, and the second wiring line is thinner in thickness than the first inner layer wiring line. A limit of error in thickness of the resin film and the first inner layer wiring line is within 10% of the thickness of each of the resin film and the first inner layer wiring line.

Printed wiring board

An electronic device includes: a first substrate and a second substrate; a lead frame disposed between the first and the second substrates for electrically connecting therebetween; and a first groove and a second groove disposed on the first and the second substrates, respectively. The first and the second grooves correspond to a connection portion between the first and the second substrates and the lead frame. The lead frame is connected to the first and the second substrates in such a manner that one end of the lead frame is engaged in both of the first and the second grooves through a conductive bonding material.

Growing community of inventors

Kariya, Japan

Yuuki Sanada