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291.发明公开公开(公告)号：US20230193510A1
公开(公告)日：2023-06-22
申请号：US18060071
申请日：2022-11-30
Inventor： Isaho KAMATA , Norihiro HOSHINO , Kiyoshi BETSUYAKU , Hidekazu TSUCHIDA , Takeshi OKAMOTO , Akiyoshi HORIAI
CPC classification number: C30B29/36 , C30B23/002
Abstract: A silicon carbide ingot having micropipes in a seed crystal closed and being reduced in the gathering of screw dislocations, a method for manufacturing the silicon carbide ingot, and a method for manufacturing a silicon carbide wafer are provided. The silicon carbide ingot comprises: a seed crystal composed of a silicon carbide single crystal and having micropipes being hollow defects; a buffer layer provided on the seed crystal and composed of silicon carbide; and a bulk crystal growth layer provided on the buffer layer and composed of silicon carbide. The buffer layer and the bulk crystal growth layer have a plurality of screw dislocations continuous with the micropipes closed with the buffer layer, and the plurality of screw dislocations having the micropipe in common in the bulk crystal growth layer are 150 μm or more apart from each other.
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公开(公告)号：US20230168311A1
公开(公告)日：2023-06-01
申请号：US18056058
申请日：2022-11-16
Inventor： SOYA TANIGUCHI , YOSHIKAZU FURUTA , KAZUO MATSUKAWA , YOSHIYUKI UTAGAWA
IPC: G01R31/396 , H01M10/42 , H03K21/40
CPC classification number: G01R31/396 , H01M10/425 , H03K21/406 , H01M2010/4271 , H04L25/0276
Abstract: A battery monitoring system that monitors states of a plurality of batteries. The battery monitoring system includes a battery monitoring ECU and a plurality of battery monitoring devices. The battery monitoring ECU and the plurality of battery monitoring devices are connected to each other in any connection form of ring connection, daisy chain connection, or multi-drop connection.
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公开(公告)号：US20230154756A1
公开(公告)日：2023-05-18
申请号：US17972626
申请日：2022-10-25
Inventor： TAKASHI ISHIDA
IPC: H01L21/268
CPC classification number: H01L21/268
Abstract: A method for manufacturing a semiconductor device includes: irradiating, with laser light, a semiconductor substrate having a p-type first semiconductor layer and an n-type second semiconductor layer so that the laser light converges on an interface between the first semiconductor layer and the second semiconductor layer, wherein each of the p-type first semiconductor layer and the n-type second semiconductor layer placed on the first semiconductor layer is formed of a compound semiconductor; and separating the semiconductor substrate into the first semiconductor layer and the second semiconductor layer along the interface.
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公开(公告)号：US20230138210A1
公开(公告)日：2023-05-04
申请号：US17974850
申请日：2022-10-27
Inventor： Naoya TAKE
IPC: H01S5/0237 , H01L23/00 , H01S5/02315 , H01S5/02345
Abstract: A semiconductor device includes a semiconductor element, a substrate, and a plurality of wires. The semiconductor element has a plurality of electrodes on a first surface. The substrate has an element mount portion to which a second surface of the semiconductor element is joined through a solder joining material, a plurality of bonding portions disposed on a periphery of the element mount portion and spaced apart from each other, and a solder absorption portion extending outwardly from the element mount portion to receive a surplus of the solder joining material and being electrically independent of the plurality of bonding portions. The wires connect the electrodes and the bonding portions. The element mount portion and the solder absorption portion have a higher solder wettability than another portion of the substrate.
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公开(公告)号：US20230128607A1
公开(公告)日：2023-04-27
申请号：US17962573
申请日：2022-10-10
Inventor： KAZUYUKI ISHIHARA , HIROSHI ANDO
Abstract: A blind spot display device displays an image of blind spot blocked by an obstacle, and includes an incidence surface, a light guide member, a first reflecting surface closed to a display region, a second reflecting surface close to the blind spot, and multiple prism portions protruding toward the display region. An external environment light beam enters the incidence surface, reflects alternately on the first and second reflecting surface while passing through the light guide member, and emits toward the display region through the prism portions. Apexes of the prism portions are arranged in a three dimensional manner not along a plane.
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Patent Agency Ranking
公开(公告)号：US20230111246A1
公开(公告)日：2023-04-13
申请号：US17955625
申请日：2022-09-29
Inventor： YOHEI IWAHASHI , JUN SAITO
Abstract: A base layer has a low concentration peak at a position between a portion located at a same depth as a lower end portion of a gate electrode and a portion located at a same depth as an upper end portion of the gate electrode in a concentration profile of an impurity concentration in a depth direction. An impurity region has a boundary with the base layer in the depth direction at a position between a first peak position, at which the impurity concentration of the base layer is maximum between the portion located at the same depth as the lower end portion and the position of the low concentration peak, and a second peak position, at which the impurity concentration of the base layer is maximum between the position of the low concentration peak and the portion located at the same depth as the upper end portion.
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公开(公告)号：US20230065815A1
公开(公告)日：2023-03-02
申请号：US17871231
申请日：2022-07-22
Inventor： Masato NOBORIO
Abstract: A semiconductor device has a cell region formed with a semiconductor element and an outer peripheral region surrounding the cell region. The outer peripheral region includes a guard ring part having a plurality of guard rings of the second conductivity-type, and a plurality of guard ring column regions of the second conductivity-type. Each of the guard rings is disposed in a surface layer portion of the drift layer and has a frame shape surrounding the cell region. The guard ring column regions are extended from the guard rings toward the substrate. Each of the guard ring column regions has a width smaller than a width of each of the guard rings in a direction along a planar direction of the substrate in a predetermined cross-section defined along the cell region and the outer peripheral region. At least two guard ring column regions are provided for each guard ring.
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公开(公告)号：US20230044970A1
公开(公告)日：2023-02-09
申请号：US17881255
申请日：2022-08-04
Inventor： Daisuke UEMATSU
Abstract: A control device has a learning model that outputs an estimated value of a second physical quantity that is unobservable under a condition of manufacturing a SiC crystal, from a first physical quantity that is observable under the condition of manufacturing the SiC crystal. The control device generates a basic learning model by mechanical learning using, as teacher data, a simulation result of a simulation model based on structural data of a SiC crystal manufacturing apparatus. The control device acquires measured values of the first physical quantity and the second physical quantity measured under a condition that the SiC crystal is unable to be manufactured while the second physical quantity is observable, and generates the learning model that corrects an output of the basic learning model based on the measured values.
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299.发明申请公开(公告)号：US20230033127A1
公开(公告)日：2023-02-02
申请号：US17873737
申请日：2022-07-26
Inventor： Masashige SATO , Taku SUZUKI , Yoshiki MATSUMOTO
IPC: G01S7/4913 , G01S17/58 , G01S17/34
Abstract: A measurement system determining a correspondence between detection signals regarding distance and relative speed of multiple targets includes: a first result acquisition unit performing FFT processing on a signal generated based on both of an in-phase component and an orthogonal component of the reception light, and acquiring, as a first result, a peak frequency regarding the distance and a peak frequency regarding the relative speed; a second result acquisition unit acquiring, as a second result, a peak frequency detected by performing FFT processing on at least one of the in-phase component signal and the orthogonal component signal; and a combination determination unit determining, as a third result, a combination of correspondence between the distance and the relative speed based on both of the first result and the second result.
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公开(公告)号：US20230022565A1
公开(公告)日：2023-01-26
申请号：US17861909
申请日：2022-07-11
Inventor： Hiroshi ANDO , Kodai TAKEDA
Abstract: A light guide member includes an incident portion, an emission portion, a reflection portion, and an inclined portion. An internal reflection angle inside the reflection portion and the emission portion is larger than an incident angle of an external light with respect to a first normal line that is a normal line of the emission portion. A first inclination angle that is an inclination angle of the incident portion with respect to the first normal line is smaller than the internal reflection angle. A height from the emission portion to a second side of the incident portion is larger than a distance between the emission portion and the reflection portion. A second inclination angle that is an inclination angle of the inclined portion with respect to the first normal line is smaller than the internal reflection angle.
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