Renesas Electronics Corporation

Olympus Corporation

Minolta Company, Ltd.

Nec Corporation

Konica Minolta Opto, Inc.

Olympus Medical Systems Corporation

Murata Manufacturing Co., Ltd.

Nec C Orporation

Yasuhiro Okamoto

Tatsuo Nakayama

Hironobu Miyamoto

Takashi Inoue

Yuji Ando

Kazuki Ota

Ryuichi Yoshida

Hiroshi Kawaguchi

Yoshinao Miura

Masaaki Kuzuhara

Yasuhiro Murase

Akio Wakejima

Toshiyuki Takewaki

Kazuo Banju

Masanobu Koitabashi

Tomoyuki Yuasa

Haruyuki Nakano

Ramiya Uchida

Hiroki Moriyama

Satoshi Shinke

Naotaka Kuroda

Kazuomi Endo

Katsumi Yamanoguchi

Takayuki Nagai

Nobuo Machida

Shinichi Miyake

Kensuke Kasahara

Ryohei Nega

Ichiro Masumoto

Nobuhiro Nagura

Masaaki Kanazawa

Yoshitaka Sugimoto

Hiroyuki Okada

Yasushi Tanijiri

Minoru Kuwana

Hidenori Shimawaki

Kenichi Hisada

Keijiro Omoto

Kohji Matsunaga

Koji Hataya

Taketo Namikawa

Atsushi Tsuboi

Kenji Ishibashi

Yoshiaki Hata

Junichi Tanii

Toshio Nishimura

Tohru Kawai

Akira Kosaka

Takehiro Ueda

Yoshitaka Umemoto

Masayuki Miyazawa

Takashi Ide

Hiroaki Miyoshi

Masanaga Nishikawa

Yutaka Masaki

Minoru Kurosawa

Senichirou Nagase

Akira Wada

Tadashi Yoda

Manabu Harada

Tatsuo Nakayawa

Junji Fujita

Takehirou Mariko

In a semiconductor device in a wafer state, an element region and a scribe region are defined in one main surface of a semiconductor substrate. In the element region, a vertical MOS transistor is formed as a semiconductor element. In the scribe region, an n-type column region and a p-type column region are defined. An n-type column resistor is formed in the n-type column region. A p-type column resistor is formed in the p-type column region.

Semiconductor device

An endoscope includes an insertion portion, an operation portion, a knob protruding from the operation portion to a first side in a direction intersecting a longitudinal direction, a universal cord protruding to a second side in the direction, and a power unit provided in a housing portion disposed on the operation portion on the second side so as not to stick out to the first side with respect to a center axis.

Endoscope

An external mechanism for endoscope includes a bending wheel, a motor, a housing case, and an operation switch, a case side fitting surface and a switch side fitting surface are formed flat to each other, and when a protrusion is provided on a contact surface of the housing case, a recess is provided on a contact surface of the operation switch, whereas when a protrusion is provided on the contact surface of the operation switch, a recess is provided on the contact surface of the housing case.

External mechanism for endoscope, and endoscope apparatus

An endoscope includes an insertion portion, an operation portion, a power transmission unit, a power relay unit, a power generation unit configured to apply power to the power relay unit in a second power transmission shaft direction which is non-parallel to a first power transmission shaft direction, an elastic member configured to perform either one of urging the power relay unit against the power generation unit or urging the power generation unit against the power relay unit, and a cable configured to extend from the operation portion in the second power transmission shaft direction which is a direction different from a longitudinal direction, wherein the power generation device is attached such that the power generation device is disposed to extend in an extending direction of the cable after being mounted.

An external mechanism for an endoscope includes: a bending wheel configured to engage with a second UD knob of a second bending operation device provided in an operation portion of an endoscope; a motor portion configured to generate a driving force for rotating the bending wheel; a housing case housing the bending wheel and the motor portion and detachably attached to the operation portion, and an operation switch arranged outside the housing case and configured to output a control signal to the motor portion due to the operating element being operated, in which the operation switch is pivotally supported by the rotation shaft and rotates with respect to the housing case.

An external mechanism for endoscope includes a bending wheel, a motor, a housing case, a case detachably fixing member, and a mounting restricting member obstructing mounting of a housing case on a sub operation section by interfering with a second bending upward and downward fixing lever in a state where the second bending upward and downward fixing lever is at a position other than a release position.

External mechanism for endoscope and endoscope system

To improve an on-resistance of a semiconductor device. A plurality of collector regions are formed at a predetermined interval on a bottom surface of a drift layer made of SiC. Next, on the bottom surface of the drift layer, both of the drift layer and a collector region via a silicide layer are connected to a collector electrode.

Semiconductor device and method of manufacturing the same

An external mechanism for endoscope includes a wheel configured to be engaged with a second bending operation up and down knob of a second bending operation apparatus provided in an operation portion of an endoscope, a motor configured to generate driving force for rotating the wheel, an operation switch configured to output a driving control signal for the motor, a container case that contains the wheel and the motor, a case attachment and detachment fixation member with which the container case can be attached to and detached from the operation portion, and a switch case attached to the container case and configured to be able to turn between a first position that covers a part of the operation portion and a second position away from the first position.

An external mechanism for endoscope includes a wheel engaged with a second bending operation up and down knob of a second bending operation apparatus provided in an operation portion of an endoscope, a motor configured to generate driving force for rotating the wheel, an operation switch for outputting a driving control signal to the motor, a container case containing the wheel and the motor, a case attachment and detachment fixation member with which the container case can be attached to and detached from the operation portion, a switch case attached to the container case and configured to be able to turn between a first position covering a part of the operation portion and a second position away from the first position, and a dummy switch provided in the switch case and configured to operate a remote switch arranged in the operation portion in the first position via the switch case.

In a Schottky barrier diode region, a Schottky barrier diode is formed between an n-type drift layer and a metal layer, and in a body diode region, a p-type semiconductor region, a p-type semiconductor region, and a p-type semiconductor region are formed in order from a main surface side in the drift layer, and a body diode is formed between the p-type semiconductor region and the drift layer. An impurity concentration of the p-type semiconductor region is decreased lower than the impurity concentration of the p-type semiconductor regions, thereby increasing the reflux current flowing through the Schottky barrier diode and preventing the reflux current from flowing through the body diode.

An external mechanism for endoscope includes: an abutment surface that is a first surface configured to cover a knob arranging surface at which a second bending operation knob is arranged in an operation portion of an endoscope; a wheel configured to engage with the second bending operation knob arranged at the knob arranging surface; a motor configured to generate a driving force for rotating the wheel; a housing case that houses the wheel and the motor; a case attaching/detaching and fixing section for detachably attaching the housing case to the operation portion of the endoscope; and a locking member provided at the housing case and configured to be locked on the knob arranging surface of the endoscope and a large-diameter portion end face adjacent to the knob arranging surface in the operation portion of the endoscope.

External mechanism for endoscope and endoscope apparatus

An endoscope includes a flexible tube section including coiled tubes, a motor disposed on a proximal side of the flexible tube section, a driving force transmission unit disposed on a distal side of the flexible tube section, and a drive shaft provided inside the flexible tube section along a long axis, the drive shaft being caused to perform rotation around the long axis by a driving force of the motor and to transmit the rotation of the motor to the driving force transmission unit, where torsional resistance of the flexible tube section around the long axis is set higher than torsional resistance between a relay gear of the motor and a drive gear of the driving force transmission unit through the drive shaft.

Insertion device having universal cord with extending transmission member

An insertion device includes a shape-variable tube elastically returning while the shape-variable tube bends at a tube bending radius of a tube radius boundary value or more, and a shaft rotating around a shaft axis inside the shape-variable tube so that the shaft transmits a driving force to drive a motion section from a first extending direction toward a second extending direction. The shaft elastically returns while the shaft bends at a shaft bending radius of a shaft radius boundary value or more, and rotates without being deformed while the elastic return is impossible when the shape-variable tube bends in an elastically returnable range.

Inserting device

Characteristics of a semiconductor device are improved. A method of manufacturing a semiconductor device of the invention includes a step of forming a gate insulating film over a nitride semiconductor layer. The step includes steps of forming a crystalline AlOfilm on the nitride semiconductor layer, forming a SiOfilm on the AlOfilm, and forming an amorphous AlOfilm on the SiOfilm. The step further includes steps of performing heat treatment on the amorphous AlOto crystallize the amorphous AlO, thereby forming a crystalline AlOfilm, and forming a SiOfilm on the crystalline AlOfilm. In this way, since a film stack, which is formed by alternately stacking the crystalline AlOfilms and the SiOfilms from a bottom side, is used as the gate insulating film, threshold voltage can be cumulatively increased.

Method of manufacturing semiconductor device and the semiconductor device

Growing community of inventors

Tokyo, Japan

Yasuhiro Okamoto