公开(公告)号：US12125904B2

公开(公告)日：2024-10-22

申请号：US17612542

申请日：2020-05-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi Ichiryu ,  Yusuke Kinoshita ,  Ryusuke Kanomata ,  Masanori Nomura ,  Hidetoshi Ishida

IPC: H01L29/778 ,  H01L23/00 ,  H01L25/07 ,  H01L27/06 ,  H01L27/07 ,  H01L29/10 ,  H01L29/20 ,  H01L29/205 ,  H01L29/417 ,  H01L29/423 ,  H03K17/12 ,  H03K17/687

CPC classification number: H01L29/7787 ,  H01L29/1066 ,  H01L29/2003 ,  H01L29/205

Abstract: A bidirectional switch module includes a plurality of bidirectional switches and a mount board. Each of the plurality of bidirectional switches includes a first source electrode, a first gate electrode, a second gate electrode, and a second source electrode. On the mount board, the plurality of bidirectional switches are mounted. In the bidirectional switch module, the plurality of bidirectional switches are connected in parallel.

公开(公告)号：US11637552B2

公开(公告)日：2023-04-25

申请号：US17614716

申请日：2020-04-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yusuke Kinoshita ,  Takashi Ichiryu ,  Ryusuke Kanomata ,  Hidetoshi Ishida

IPC: H03K17/04 ,  H03K19/01 ,  H03K19/20

Abstract: A speed-up circuit is configured to be provided between a power supply terminal and a gate of a semiconductor switching element. An impedance element is configured to be provided between a signal input terminal and a node, the node being between the speed-up circuit and the gate of the semiconductor switching element. In the speed-up circuit, a second field effect transistor is connected in series to a first field effect transistor and is configured to be connected to the gate of the semiconductor switching element. The impedance element has an impedance higher than an impedance of the speed-up circuit when both the first field effect transistor and the second field effect transistor are in an ON state.

公开(公告)号：US12051979B2

公开(公告)日：2024-07-30

申请号：US17755574

申请日：2021-01-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryusuke Kanomata ,  Yusuke Kinoshita ,  Hidetoshi Ishida

IPC: H02M1/08 ,  H02M1/00 ,  H02M3/155 ,  H02M3/335 ,  H01L27/06

CPC classification number: H02M3/33584 ,  H02M1/0058 ,  H01L27/0629 ,  H02M1/08 ,  H02M3/155

Abstract: A substrate electric potential stabilization circuit is configured to be connected to a bidirectional switch element including a first main electrode, a second main electrode, and a backside electrode. The stabilization circuit includes a first switch connected to the first main electrode and the backside electrode in series between the first main electrode and the backside electrode, a second switch connected to the second main electrode and the backside electrode in series between the second main electrode and the backside electrode, and a through-current prevention circuit configured to prevent the first switch and the second switch from being turned on simultaneously. The substrate electric potential stabilization circuit prevents a through-current flowing in this circuit.

公开(公告)号：US09923069B1

公开(公告)日：2018-03-20

申请号：US15445358

申请日：2017-02-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryusuke Kanomata ,  Ayanori Ikoshi ,  Hiroto Yamagiwa ,  Saichirou Kaneko ,  Manabu Yanagihara

IPC: H01L29/739 ,  H01L29/417 ,  H01L29/20 ,  H01L29/205 ,  H01L29/778 ,  G01R31/26

CPC classification number: H01L29/41758 ,  G01R31/2642 ,  H01L29/0619 ,  H01L29/2003 ,  H01L29/205 ,  H01L29/402 ,  H01L29/42316 ,  H01L29/7786 ,  H01L29/8613 ,  H01L29/872

Abstract: A nitride semiconductor device includes: a stacked structure portion having an active region; first and second main electrodes extending in a first direction; and a lead-out line (second lead-out line) electrically connected to the second main electrode and extends to one side in the first direction. The first main electrode has a first tip at an end which is on the side to which the lead-out line extends. The second main electrode has a second tip at an end which is on the side to which the lead-out line extends, and has, at a second tip-side in the first direction, a tapered portion having a width in a second direction which decreases with decreasing distance to the second tip. The lead-out line has a region projecting in the second direction from the tapered portion, and the first tip does not project further in the first direction than the second tip.