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公开(公告)号：US20240243717A1
公开(公告)日：2024-07-18
申请号：US18413268
申请日：2024-01-16
Applicant: ROHM Co., LTD.
Inventor： Fumiya Nagasawa , Kazuisao Tsuruda
IPC: H03H7/01
CPC classification number: H03H7/0115
Abstract: An SSH circuit includes a plurality of unit lattices, each unit lattice including unit circuits. Each unit circuit includes two first inductors, a second inductor connected in series between the two first inductors, and two capacitors connected between a ground potential and two respective connection nodes at which the first and second inductors are connected to each other, an inductance of the second inductor being larger than that of the first inductors. In each unit lattice, the two connection nodes of each unit circuit are arranged at respective vertexes of both ends of each side forming a hyperrectangle, and the connection nodes arranged at each vertex being connected to each other and sharing the corresponding capacitor. The unit lattices are connected to each other by a mutual sharing of the first inductors by two unit lattices adjacent to each other. A peripheral edge has an uneven shape of unit lattices.
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公开(公告)号：US10276919B2
公开(公告)日：2019-04-30
申请号：US15443636
申请日：2017-02-27
Applicant: ROHM CO., LTD. , OSAKA UNIVERSITY
Inventor： Sebastian Diebold , Masayuki Fujita , Tadao Nagatsuma , Jaeyoung Kim , Toshikazu Mukai , Kazuisao Tsuruda
Abstract: A THz device includes: an antenna electrode capable of transmitting and receiving a THz wave to free space; first transmission lines capable of transmitting the THz wave, the first transmission lines respectively connected to the antenna electrodes; an active element of which a main electrode is connected to each of the first transmission lines; second transmission lines capable of transmitting the THz wave, the second transmission lines connected to the first active device; pad electrodes respectively connected to the second transmission lines; and a low-pass filter with respect to the THz wave, the low-pass filter connected to the pad electrodes, wherein impedance matching of between the antenna electrode and the active element is performed by an impedance conversion of the first transmission lines. The THz device is capable of the high-efficiency matching between the active element and the antenna due to the impedance conversion effect of the transmission line.
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公开(公告)号：US11243164B2
公开(公告)日：2022-02-08
申请号：US16983443
申请日：2020-08-03
Applicant: ROHM CO., LTD.
Inventor： Kazuisao Tsuruda
Abstract: There is provided a terahertz device including: a terahertz element configured to generate an electromagnetic wave; a reflection film provided at a position facing the terahertz element and configured to reflect the electromagnetic wave generated from the terahertz element in one direction; and an encapsulating material configured to encapsulate the terahertz element and the reflection film.
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公开(公告)号：US10205242B2
公开(公告)日：2019-02-12
申请号：US15614700
申请日：2017-06-06
Applicant: ROHM CO., LTD.
Inventor： Toshikazu Mukai , Kazuisao Tsuruda
IPC: H01Q9/16 , G01N21/35 , H03B7/08 , G01N21/3581 , G01R31/28 , G01R31/311 , G02F1/39 , G02F2/02 , G02F1/35
Abstract: THz device includes: a semiconductor substrate; a first semiconductor layer disposed on the semiconductor substrate; an active element formed by being laminated on the first semiconductor layer; a second electrode connected to the first semiconductor layer to be connected to a cathode K of the active element, the second electrode disposed on the semiconductor substrate; a first electrode connected to an anode A of the active element, the first electrode disposed on the semiconductor substrate to be opposite to the second electrode; a rear reflector metal layer disposed on a back side surface of the semiconductor substrate opposite to the first semiconductor layer, wherein the active element forms a resonator between the second and first electrodes, wherein electromagnetic waves are reflected on the rear reflector metal layer, and electromagnetic waves have a surface light-emission radiating pattern or surface light-receiving pattern in a vertical direction to the semiconductor substrate.
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公开(公告)号：US11894494B2
公开(公告)日：2024-02-06
申请号：US17266008
申请日：2019-07-26
Applicant: ROHM CO., LTD.
Inventor： Kazuisao Tsuruda , Jaeyoung Kim , Hideaki Yanagida , Toshikazu Mukai
CPC classification number: H01L33/483 , H01L33/52 , H01L33/60 , H01L33/62 , H01L2933/005 , H01L2933/0016
Abstract: A terahertz device includes a terahertz element, a sealing resin, a wiring layer and a frame-shaped member. The terahertz element that performs conversion between terahertz waves and electric energy. The terahertz element has an element front surface and an element back surface spaced apart from each other in a first direction. The sealing resin covers the terahertz element. The wiring layer is electrically connected to the terahertz element. A frame-shaped member is made of a conductive material and arranged around the terahertz element as viewed in the first direction. The frame-shaped member has a reflective surface capable of reflecting the terahertz waves.
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Patent Agency Ranking
公开(公告)号：US11387783B2
公开(公告)日：2022-07-12
申请号：US17296192
申请日：2019-11-28
Applicant: ROHM CO., LTD.
Inventor： Kazuisao Tsuruda , Hideaki Yanagida
IPC: H03B7/08 , H01L23/14 , H01L23/28 , H01L23/498 , H01L23/538 , H01L23/66 , H01P1/20
Abstract: Terahertz device includes first resin layer, columnar conductor, wiring layer, terahertz element, second resin layer, and external electrode. Resin layer includes first resin layer obverse face and first resin layer reverse face. Columnar conductor includes first conductor obverse face and first conductor reverse face, penetrating first resin layer in z-direction. Wiring layer spans between first resin layer obverse face and first conductor obverse face. The terahertz element includes element obverse face and element reverse face, and converts between terahertz wave and electric energy. Second resin layer includes second resin layer obverse face and second resin layer reverse face, and covers wiring layer and terahertz element. External electrode, disposed offset in a direction first resin layer reverse face faces with respect to first resin layer, is electrically connected to columnar conductor.
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公开(公告)号：US11335653B2
公开(公告)日：2022-05-17
申请号：US16999029
申请日：2020-08-20
Applicant: ROHM Co., Ltd.
Inventor： Kazuisao Tsuruda
Abstract: The task of the present invention is to achieve gain enhancement.
A terahertz device (10) of the present invention includes a terahertz element (20) generating an electromagnetic wave, a dielectric (50) including a dielectric material and surrounding the terahertz element (20), a gas space (92) including a gas, and a reflecting film (82) serving as a reflecting portion. The reflecting film (82) includes a portion opposing the terahertz element (20) through the dielectric (50) and the gas space (92) and reflecting the electromagnetic wave toward a direction, wherein the electromagnetic wave is generated from the terahertz element (20) and transmitted through the dielectric (50) and the gas space (92). In addition, the refractive index of the dielectric (50) is lower than the refractive index of the terahertz element (20) and is higher than the refractive index of the gas in the gas space (92).-
公开(公告)号：US12174114B2
公开(公告)日：2024-12-24
申请号：US17998883
申请日：2021-06-07
Applicant: ROHM CO., LTD.
Inventor： Kazuisao Tsuruda
IPC: G01N21/3586 , G01R31/28 , H01Q1/12 , H01Q15/14
Abstract: A terahertz device includes an antenna base including reflective films, wherein: the reflective films are curved to be recessed; the reflective film and the reflective film are arranged to be adjacent to each other in a y direction; and when viewed from a z direction, the sizes of the reflective film and the reflective film along an x direction are smaller than the sizes of the reflective film and the reflective film along the y direction.
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公开(公告)号：US10656021B2
公开(公告)日：2020-05-19
申请号：US15617313
申请日：2017-06-08
Applicant: ROHM CO., LTD.
Inventor： Hideyuki Kawakami , Jae-Young Kim , Toshikazu Mukai , Kazuisao Tsuruda
Abstract: A reflective detection device, includes: oscillation element oscillating a terahertz wave; exit part from which the terahertz wave exits; incident part to which the terahertz wave reflected from a detection target is incident; and detection element detecting the terahertz wave incident to the incident part, wherein the exit part and the incident part are disposed on one side in first direction and are spaced apart from each other in second direction with respect to the detection target, the terahertz wave exiting from the exit part travels to propagate from the exit part toward the incident part in the second direction along a direction toward the detection object in the first direction, and the terahertz wave incident to the incident part travels to propagate from the exit part toward the incident part in the second direction along a direction away from the detection target in the first direction.
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公开(公告)号：US09632247B2
公开(公告)日：2017-04-25
申请号：US14644175
申请日：2015-03-10
Applicant: ROHM CO., LTD. , OSAKA UNIVERSITY
Inventor： Masayuki Fujita , Tadao Nagatsuma , Kazuisao Tsuruda , Dai Onishi
CPC classification number: G02B6/1225 , G02B6/124 , G02B6/34 , G02B2006/12121 , G02B2006/12123 , G02B2006/12126 , H01Q1/00 , H01S2302/02
Abstract: The THz-wave device comprises: a 2D-PC slab; lattice points periodically arranged in the 2D-PC slab, the lattice points for diffracting the THz waves in PBG frequencies of photonic band structure of the 2D-PC slab in order to prohibit existence in a plane of the 2D-PC; a 2D-PC waveguide disposed in the 2D-PC slab and formed with a line defect of the lattice points; and an RTD device disposed on the 2D-PC waveguide.
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