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Matches 651 - 700 out of 42,038

Document Document Title
WO/2022/180961A1
[Problem] The purpose of the present invention is to provide aluminum nitride to which scandium having nitrogen polarity is added. [Solution] A nitride material which is represented by chemical formula ScXMYAl1-X-YN, and which is charact...  
WO/2022/181578A1
This elastic wave filter (1) comprises: a filter circuit connected to input/output terminals (110 and 120); and a cancel circuit (10) connected in parallel with at least a portion of a first path connecting the input/output terminal (110...  
WO/2022/178589A1
A phononic circuit component including a membrane coupled to a substrate, the membrane including a region having an array of holes and a channel provided in the substrate beneath the region so that the region is released from the substra...  
WO/2022/181073A1
An acoustic wave module (100) comprises an acoustic wave device (110), a mounting substrate (50), a sealing resin (80), and solder bumps (70a, 70b). The acoustic wave device (110) comprises a piezoelectric substrate (10), a function elem...  
WO/2022/178925A1
Disclosed are a tunable low-pass filter and a preparation method. The tunable low-pass filter comprises: at least one slow-wave CPW filter unit, wherein the slow-wave CPW filter unit comprises an inductor series circuit and an MEMS switc...  
WO/2022/181113A1
A piezoelectric element 10 comprises: a vibration unit 11; a holding unit 13; excitation electrodes 141, 142; mounted electrodes 151, 152; and wiring electrodes 161, 162. An excitation main surface 111 and a holding main surface 131 are ...  
WO/2022/174518A1
Disclosed are a resonator device and a filter. The resonator device comprises a wafer substrate, a piezoelectric layer and an interdigital electrode layer; the piezoelectric layer is located at one side of the wafer substrate and compris...  
WO/2022/176454A1
The present invention improves heat dissipation. In a high frequency module, an electronic component (10) comprises a first transmission filter (1), a second transmission filter (2), a first input terminal (T11) and a first output termin...  
WO/2022/174440A1
The present application relates to the field of piezoelectric technology and provides a piezoelectric element, a piezoelectric vibrator, manufacturing and driving methods therefor, and an electronic device. In the present application, a ...  
WO/2022/176738A1
An elastic wave filter having increased reliability of connection of a via and an electrically conductive member and capable of suppressing degradation of filter characteristics is provided. The elastic wave filter (2) is provided with a...  
WO/2022/174519A1
Disclosed are a resonant device and an acoustic filter. The resonant device comprises a wafer substrate, a piezoelectric layer and an interdigital electrode layer; the piezoelectric layer is located on one side of the wafer substrate and...  
WO/2022/174587A1
Disclosed in embodiments of the present application are a bulk acoustic wave resonant structure and a manufacturing method therefor. The bulk acoustic wave resonant structure comprises a substrate, and a reflection structure, a first ele...  
WO/2022/173038A1
Provided is an elastic wave device that can be further reduced in size. An elastic wave device 1 comprises: a piezoelectric layer 6 that comprises lithium tantalate or lithium niobate; a dielectric film 7 that is provided on the piezoe...  
WO/2022/170683A1
The present application relates to an acoustic wave resonator manufacturing method and an acoustic wave resonator. The method comprises: preparing a first laminated layer on a piezoelectric wafer substrate, bonding the side of the first ...  
WO/2022/173039A1
The present invention provides an elastic wave device in which an IDT electrode is formed of an epitaxial film. An elastic wave device 1 which comprises a piezoelectric layer 6 that is formed of lithium tantalate or lithium niobate, a ...  
WO/2022/170682A1
The present application relates to a resonator and an electronic device. A dedicated micromachining process flow is used to successively arrange, in a stacked manner and on a substrate, a high/low-acoustic-impedance alternating layer, a ...  
WO/2022/168937A1
The present invention suppresses damage to a piezoelectric layer. This elastic wave device comprises: a support substrate having a thickness in a first direction; a piezoelectric layer provided in the first direction of the support subst...  
WO/2022/167236A1
The invention relates to an optomechanical transducer (1), comprising: • a tuning fork (2) made of piezoelectric material comprising two arms (3a, 3b), • at least one photoactive film (4) partially deposited on at least one part of a...  
WO/2022/168364A1
A resonating device (1) is provided with a first board (50) including a resonator (10), and a second board (30) joined to the first board (50), wherein: the second board (30) includes a first power source terminal (ST2) electrically conn...  
WO/2022/167319A1
Aspects of the disclosure relate to wireless communication, and high-frequency filters with resonators configured to systematically modify phase characteristics of an antenna reflection coefficient. One aspect is a wireless communication...  
WO/2022/169405A1
Various embodiments may relate to an acoustic resonator. The acoustic resonator may include a piezoelectric layer. The acoustic resonator may also include a first electrode in contact with a first surface of the piezoelectric layer. The ...  
WO/2022/168498A1
The present invention provides a composite substrate which has excellent durability, while confining the energy of elastic waves in a piezoelectric layer. A composite substrate according to one embodiment of the present invention compris...  
WO/2022/168363A1
The method for manufacturing a resonance device (1) includes: preparing an aggregate substrate (100) which has a plurality of first power supply terminals (ST1) electrically connected to respective upper electrodes (125) of a plurality o...  
WO/2022/168798A1
Provided is an elastic wave device capable of suppressing higher order modes in a wide band. This elastic wave device 1 includes: a quartz substrate 3; a silicon carbide layer 4 provided on the quartz substrate 3; a lithium tantalate l...  
WO/2022/168799A1
The present invention provides an elastic wave device which is capable of suppressing a high-order mode in a wide band that is not less than 1.5 times the resonant frequency. An elastic wave device 1 according to the present invention ...  
WO/2022/168796A1
Provided is an elastic wave device capable of suppressing higher modes in a wide band. This elastic wave device 1 comprises: a crystal substrate 3; a polycrystalline silicon layer 4 provided on the crystal substrate 3; a lithium tantal...  
WO/2022/168797A1
Provided is an elastic wave device with which it is possible to suppress higher-order modes in a wide band. This elastic wave device 1 comprises: a crystal substrate 3; a silicon nitride film 4 provided on the crystal substrate 3; a li...  
WO/2022/165120A1
An acoustic wave device includes a support substrate, a piezoelectric layer on the support substrate, and an interdigital transducer electrode. A ratio d / p is less than or equal to about 0.5, where d is a thickness of the piezoelectric...  
WO/2022/161906A1
Certain aspects of the present disclosure provide a surface acoustic wave (SAW) resonator with piston mode design and electrostatic discharge (ESD) protections. An example electroacoustic device generally includes a piezoelectric materia...  
WO/2022/163533A1
The present invention provides: a method for producing a composite substrate which exhibits excellent adhesion between a ceramic substrate and a layer containing a tetrafluoroethylene polymer, while having excellent electrical characteri...  
WO/2022/163263A1
A multiplexer (10) includes filters (100, 200), a resin layer (60), and a conductor layer (70). The passband of the filter (200) is lower than the passband of the filter (100). The filter (100) is in contact with the conductor layer and ...  
WO/2022/161142A1
The present invention relates to a bulk acoustic resonator, comprising a substrate, a top electrode, a piezoelectric layer, a bottom electrode, and an acoustic mirror. A support layer is disposed between the substrate and a resonant stru...  
WO/2022/163865A1
Provided is an elastic wave device in which ripples in a frequency characteristic can be suppressed. An elastic wave device 10 according to the present invention constitutes a filter device having a pass band and comprises a laminated ...  
WO/2022/161135A1
The present invention relates to a filter comprising a plurality of bulk acoustic resonators. Each bulk acoustic resonator comprises a piezoelectric layer; the piezoelectric layer is scandium-doped aluminum nitride; the doping concentrat...  
WO/2022/159255A1
A surface acoustic wave, SAW, device (200) includes a first interdigital transducer, IDT, (202) and a second IDT (204) each including interdigital electrodes disposed on a first surface of a substrate (212) of piezoelectric material. The...  
WO/2022/158470A1
An elastic wave filter (1) comprises one or more serial arm resonators and one or more parallel arm resonators, and also includes elastic wave resonators having IDT electrodes formed on a substrate. The substrate has a piezoelectric film...  
WO/2022/158370A1
Provided is an elastic wave device that can be reduced in size. This elastic wave device 1 comprises a substrate 6 having a piezoelectric layer 5, an IDT electrode 7, and first and second reflectors 8, 9, the elastic wave device 1 bein...  
WO/2022/158363A1
Provided is an elastic wave device capable of suppressing a lateral mode while increasing the freedom of material. An elastic wave device 1 of the present invention is provided with: a piezoelectric substrate 2 including a piezoelectri...  
WO/2022/158028A1
This piezoelectric vibrator is provided with a piezoelectric vibration element (10), a base member (30), and a pair of electrically conductive holding members (36a, 36b) which electrically connect a pair of connecting electrodes (16a, 16...  
WO/2022/158091A1
This piezoelectric oscillator comprises a piezoelectric vibrating element having an excitation electrode and a connection electrode electrically connected to the excitation electrode, a base member having an electrode pad, and a conducti...  
WO/2022/159814A1
An acoustic wave device includes a support substrate; a piezoelectric layer on the support substrate; a first electrode and a second electrode on the piezoelectric layer in a lamination direction of the support substrate and the piezoele...  
WO/2022/157029A2
Aspects of the disclosure relate to wireless communication, and high-frequency filters with resonators. One example is a frequency band filter circuit having a split resonator. The split resonator comprises a resonator including a first ...  
WO/2022/156722A1
The present invention provides an electronic device and a formation method therefor. A transmitting end resonance structure and a receiving end sealing cover cavity are prepared on a first wafer, and a transmitting end sealing cover cavi...  
WO/2022/158249A1
Provided is an elastic wave device which is unsusceptible to leaking elastic waves in a direction that is perpendicular to a lamination direction of a piezoelectric substrate. This elastic wave device 1 comprises: a piezoelectric subst...  
WO/2022/152178A1
Disclosed in the present invention are a filter, a duplexer, a multiplexer, and an electronic device. In the embodiments of the present invention, at least two resonators in a filter have a dual-layer bottom electrode structure, and an e...  
WO/2022/153948A1
Provided is an elastic wave device that can suppress a transverse mode in an arbitrary frequency range. This elastic wave device 1 comprises: a piezoelectric substrate 2 that includes a support substrate 4 and a piezoelectric body laye...  
WO/2022/153789A1
This circuit module (10) is provided with: a substrate (20) that has a first main surface (201); an electronic component (30) of an acoustic wave filter, said electronic component (30) being mounted on the first main surface (201); an in...  
WO/2022/153943A1
Provided is an elastic wave device capable of sufficiently suppressing ripples caused by Rayleigh waves. This elastic wave device has a piezoelectric layer 5 laminated directly or indirectly on a support substrate 3, and a first IDT el...  
WO/2022/150752A1
A strain compensated heterostructure comprising a substrate comprising silicon carbide material; a first epitaxial layer comprising single-crystal aluminum nitride material formed on a top surface of the substrate; a second epitaxial lay...  
WO/2022/149541A1
The piezoelectric oscillation device is equipped with at least a core (5). The core (5) includes: a crystal oscillator (50) which has a three-layer structure and in which an oscillation part (11) is hermetically sealed; and a heater IC (...  

Matches 651 - 700 out of 42,038