公开(公告)号：US20240014272A1

公开(公告)日：2024-01-11

申请号：US18346556

申请日：2023-07-03

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation ,  National University Corporation Tokai National Higher Education and Research System

Inventor： Seiya HASEGAWA ,  Takashi USHIJIMA ,  Takashi ISHIDA ,  Shoichi ONDA ,  Chiaki SASAOKA ,  Jun KOJIMA

IPC: H01L29/20 ,  H01L21/268 ,  H01L21/78 ,  H01L21/02 ,  H01L21/56 ,  H01L21/20

CPC classification number: H01L29/2003 ,  H01L21/268 ,  H01L21/78 ,  H01L21/02458 ,  H01L21/56 ,  H01L21/20

Abstract: A semiconductor device includes a gallium nitride substrate and a pattern film disposed on a front surface of the gallium nitride substrate. In the gallium nitride substrate, a Young's modulus in a first direction along the front surface is larger than a Young's modulus in a second direction along the front surface and orthogonal to the first direction. A first ratio R1 obtained by dividing a dimension of the gallium nitride substrate in the first direction by a dimension of the gallium nitride substrate in the second direction and a second ratio R2 obtained by dividing a dimension of the pattern film in the first direction by a dimension of the pattern film in the second direction satisfy a relationship of R1

公开(公告)号：US11870425B2

公开(公告)日：2024-01-09

申请号：US17860636

申请日：2022-07-08

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Hironori Akiyama

IPC: H03K17/041 ,  H03K17/14 ,  H03K17/06 ,  H03K17/28

CPC classification number: H03K17/04113 ,  H03K17/04106 ,  H03K17/063 ,  H03K17/145 ,  H03K17/28

Abstract: A change rate control circuit computes a first drive speed, which is a gate drive speed of a gate of a drive-subject element, for controlling a change rate of an element voltage of the drive-subject element at a target change rate during a change period. A timing generating circuit acquires, in advance, a delay time caused when the gate is driven and determines a switching timing, at which the element voltage reaches a switching threshold voltage which is lower than a desired switching voltage by a predetermined value, during turn-off of the drive-subject element and generates a timing signal representing the switching timing. A speed change circuit changes the gate drive speed from the first drive speed to a second drive speed at the switching timing during turn-off of the drive-subject element.

公开(公告)号：US20230413675A1

公开(公告)日：2023-12-21

申请号：US18330988

申请日：2023-06-07

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： AKIHIKO TESHIGAHARA ,  HIDEO YAMADA ,  RYUICHIRO ABE ,  KENJI KIJIMA ,  TETSUYA ENOMOTO

IPC: H10N30/00 ,  H10N30/853 ,  H10N30/076 ,  H10N30/079

CPC classification number: H10N30/10516 ,  H10N30/079 ,  H10N30/076 ,  H10N30/853

Abstract: A piezoelectric film laminated body includes a base member and a scandium-containing aluminum nitride film. The base member has a base surface. The scandium-containing aluminum nitride film is disposed in contact with the base surface of the base member. A surface roughness of the base surface is 0.5 nm or less in arithmetic average roughness.

公开(公告)号：US11848677B2

公开(公告)日：2023-12-19

申请号：US17884871

申请日：2022-08-10

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Shotaro Wada ,  Tomohiro Nezuka

IPC: H03K5/00 ,  H03K5/003 ,  H03K21/00 ,  H03K5/15

CPC classification number: H03K5/003 ,  H03K5/15013 ,  H03K5/15026 ,  H03K21/00 ,  H03K2005/00013

Abstract: A clock signal generation circuit for a switched capacitor circuit with a chopping function unit includes: first and second synchronous clock circuits that generate first and second synchronous clock signals, respectively; an edge signal generation circuit that generates one or more rise and fall edge signals by delaying the first synchronous clock signal; a first clock generator that generate a first clock signal group for driving the switched capacitor circuit; and a second clock generator that generates a second clock signal group for driving the chopping function unit. Frequencies of the first and second clock signal groups are respectively defined by the first and second synchronous clock circuits. Rise and fall edges of the first and second clock signal groups are defined by the edge signal generation circuit.

公开(公告)号：US11825594B2

公开(公告)日：2023-11-21

申请号：US17679622

申请日：2022-02-24

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Shohei Nagai

IPC: H05K1/02 ,  H05K1/11 ,  H05K1/18 ,  H05K1/03

CPC classification number: H05K1/021 ,  H05K1/0206 ,  H05K1/03 ,  H05K1/115 ,  H05K1/185

Abstract: A semiconductor device includes: a substrate main body having a first surface and a second surface; an electric component arranged in the substrate main body; a surface conductor pattern arranged in a first circuit layer located on the second surface. Also included is a first internal conductor pattern and a second internal conductor pattern arranged in a second circuit layer located between the electric component and the second surface, and insulated from each other. Also, at least one first heat conductor via extends from the electric component to the first internal conductor pattern; and at least one second heat conductor via extends from the surface conductor pattern to the second internal conductor pattern.

公开(公告)号：US20230367070A1

公开(公告)日：2023-11-16

申请号：US18178089

申请日：2023-03-03

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： YUJIRO MIZOBUCHI ,  HIROSHI ANDO ,  KAZUYUKI ISHIHARA

IPC: G02B6/26 ,  B60R1/12

CPC classification number: G02B6/26 ,  B60R1/1207

Abstract: An optical member includes a light guide. An inclination angle of a first reflecting surface of the light guide with respect to a first direction perpendicular to a normal direction of the first reflecting surface is defined as γr in a rotational direction about an axis extending in the normal direction. A line segment is defined by connecting the viewer and the light guide in a cross section perpendicular to the first direction. An inclination angle of the line segment with respect to a second direction perpendicular to the normal direction and the first direction is defined as β in a rotational direction about an axis extending in the first direction. The first reflecting surface is formed so as to satisfy Inequation of 10°≤arctan(tan γr×sin β)≤90°.

公开(公告)号：US20230341616A1

公开(公告)日：2023-10-26

申请号：US18190313

申请日：2023-03-27

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Kazuyuki ISHIHARA ,  Masatoshi TSUJI

IPC: F21V8/00

CPC classification number: G02B6/0088 ,  G02B6/0016 ,  G02B6/0055

Abstract: An optical member includes a light guide body and a light shielding member. The light guide body includes an incident surface on which a light from a blind area is incident, a first reflecting surface configured to reflect the light from the incident surface, a second reflecting surface configured to reflect the light reflected by the first reflecting surface, prisms protruding from the first reflecting surface in a normal direction of the first reflecting surface, and a protruding portion protruding from the first reflecting surface in the normal direction. The light shielding member is in contact with the protruding portion to provide a space between the light shielding member and the first reflecting surface and covers the first reflecting surface to block a light incident toward the first reflecting surface from an outside of the light guide body.

公开(公告)号：US20230341605A1

公开(公告)日：2023-10-26

申请号：US18190237

申请日：2023-03-27

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Hiroshi ANDO ,  Kazuyuki ISHIHARA

IPC: F21V8/00

CPC classification number: G02B6/0036 ,  G02B6/0053 ,  G02B6/0055

Abstract: An optical member includes a light guide body that includes an incident surface on which a light from a blind area is incident, multiple reflecting surfaces configured to reflect the light from the incident surface, a smooth surface configured to reflect the light reflected by the reflecting surfaces, and multiple prisms protruding from the reflecting surfaces in a normal direction of the reflecting surfaces and configured to emit the light from the incident surface and the light reflected by the smooth surface to an outside of the light guide body. The prisms are arranged at intervals in a first direction intersecting the normal direction and are arranged at intervals in a second direction intersecting the normal direction and the second direction. Each of the reflecting surfaces is positioned between the adjacent prisms such that reflecting surfaces are arranged at intervals in the first direction and the second direction.

公开(公告)号：US11764546B2

公开(公告)日：2023-09-19

申请号：US17501497

申请日：2021-10-14

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation ,  QD LASER, Inc.

Inventor： Yuki Kamata ,  Hiroyuki Tarumi ,  Koichi Oyama ,  Keizo Takemasa ,  Kenichi Nishi ,  Yutaka Onishi

IPC: H01S5/34 ,  H01S5/10 ,  H01S5/042 ,  H01S5/14 ,  H01S3/08036 ,  H01S5/30

CPC classification number: H01S5/341 ,  H01S3/08036 ,  H01S5/04256 ,  H01S5/1096 ,  H01S5/141 ,  H01S5/3412 ,  H01S5/3054 ,  H01S5/3086

Abstract: The semiconductor laser device includes: an activation layer having at least one first quantum dot layer and at least one second quantum dot layer having a longer emission wavelength than the first quantum dot layer. The gain spectrum of the active layer has the maximum values at the first wavelength and the second wavelength longer than the first wavelength corresponding to the emission wavelength of the first quantum dot layer and the emission wavelength of the second quantum dot layer, respectively. The maximum value of the gain spectrum at the first wavelength is defined as the first maximum value, and the maximum value of the gain spectrum at the second wavelength is defined as the second maximum value. The first maximum value is larger than the second maximum value.

公开(公告)号：US20230289064A1

公开(公告)日：2023-09-14

申请号：US18173880

申请日：2023-02-24

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  MIRISE Technologies Corporation

Inventor： Tetsuro TAKIZAWA

IPC: G06F3/06

CPC classification number: G06F3/0613 ,  G06F3/0659 ,  G06F3/0673

Abstract: A memory controller issues a command to a semiconductor memory device in response to an access request from an arithmetic unit to the semiconductor memory device having multiple ranks. The memory controller includes an access request holder, an access request selector, a command generator, a refresh interval counter and a refresh counter. The access request selector calculates a total processing period for each of the ranks, selects multiple access requests as an access request group sent to an access target rank, and determines a processing order of the access requests in the selected access request group. The command generator issues an access command to the access target rank in order, and issues a refresh command to a refresh target rank.