baber/WOPTO huggingface dataset:
Patent KR-20220060625-A (KR)
Title: Apparatus for manufacturing a display apparatus and method for manufacturing a display apparatus
Inventor: KIM JEUNG HOON
IPC: C23C14/04
Filed: 2020-11-04
Abstract: According to one embodiment of the present invention, disclosed is a manufacturing device of a display device, comprising: a mask frame having an opening and a plurality of grooves spaced apart from the opening; a mask sheet disposed on the mask frame and having a plurality of pattern holes overlapping the opening; and a support stick attached to the mask frame to cross at least one of the plurality of grooves. The outer surface of the mask frame includes a concave surface that is recessed into the mask frame to respectively define the plurality of grooves.
Patent KR-20220062732-A (KR)
Title: Agricultural solar power generation structure
Inventor: LEE CHANG HWAN
IPC: H02S20/30
Filed: 2020-11-09
Abstract: An objective of the present invention is to provide an agricultural solar photovoltaic structure, which has a simple structure and is capable of easily adjusting an inclination angle of a solar photovoltaic module only by applying a pushing force in a horizontal direction by a worker. To this end, according to the present invention, the agricultural solar photovoltaic structure includes: pillars (10); horizontal rails (20) coupled to upper ends of the pillars (10); a support frame (30) obliquely disposed on an upper side of the horizontal rails (20), and having an upper end and a lower end; a solar photovoltaic module (40) coupled to the support frame (30); and an angle adjustment device (1) installed between the horizontal rails (20) and the support frame (30) to adjust an angle of the support frame (30) and the solar module (40), wherein the angle adjustment device (1) includes: a sliding unit (100) slidably coupled to the horizontal rail (20) in a horizontal direction, and connected to the lower end of the support frame (30) by a first rotation shaft (2) to allow a rotation of the support frame (30); a roof pole (200) rotatably connected to the upper end of the support frame (30) by a second rotation shaft (3); a roof pole bracket (300) fixedly coupled to a lower portion of the roof pole (200); and an angle bracket (400) fixedly installed on the horizontal rail (20), and connected to the roof pole bracket (300) by a third rotation shaft (4).
Patent KR-20220063367-A (KR)
Title: Lithium-sulfur secondary battery
Inventor: CHUNG HA BIN
IPC: H01M10/052
Filed: 2020-11-10
Abstract: The present invention relates to a lithium-sulfur secondary battery, which includes other electrolytes that do not mix with each other in each of a positive electrode and a negative electrode, thereby improving energy density and lifespan characteristics compared to a conventional lithium-sulfur secondary battery.
Patent KR-20220063661-A (KR)
Title: Devices and Methods for Gradually Analyzing Natural Languages
Inventor: KIM JEONGHYEON
IPC: G10L15/22
Filed: 2020-11-10
Abstract: Disclosed are an incremental language analysis device, and a device and a method for incremental natural language conversation using the same. The incremental language analysis device comprises: a first morpheme analysis part for decomposing the incremental units of an inputted text into morpheme units and adding a dummy morpheme behind the final morpheme of the incremental units of the text; a second morpheme analysis part for generating information on the part of speech of morphemes; and a syntax analysis part for generating information relation between the morphemes based on the information on the part of speech. The device for incremental natural language conversation comprises: an incremental speech recognition part for generating the incremental units of a text by detecting the enunciation of a natural language and converting the same into a text; an incremental language analysis part for decomposing the incremental units of the text into morpheme units, adding a dummy morpheme behind the final morpheme of the incremental units of the text, and generating information on the part of speech and relation information; and an incremental conversation management part for interpreting the incremental units of the text and determining a response corresponding to the incremental units of the text. Therefore, provided is an incremental language analysis device capable of processing enunciation successively.
Patent KR-20220064023-A (KR)
Title: Hemostatic and microorganism (microbiome) sampling device for lumen of the human body
Inventor: RYU JAE WOO
IPC: A61F13/36
Filed: 2020-11-11
Abstract: The present invention relates to a device for hemostasis and collection of microorganisms for the lumen of a human body, wherein the device can easily stop bleeding from a bleeding site in the lumen of a human body and conveniently collect microorganisms present in the lumen of a human body for microbial diagnosis, and includes: a first handle; a second handle; a moving member; and a sponge or cotton ball.
Patent KR-20220065207-A (KR)
Title: Automatically wiped dining table
Inventor: KIM TAE HYEON
IPC: A47L17/00
Filed: 2020-11-13
Abstract: Provided is an automatically wiped dining table, which comprises: an iron plate (10) to which a rag/dishcloth is attached, and which is attached to a rail to be moved; a dining table (20); a button (30) which is pushed by a user to start and end the movement of a rail (40); and the rail (40) which is attached to the both ends of the dining table (20) so as to move the iron plate (10). Therefore, according to the present invention, tables and dining tables can be automatically wiped in a clean manner when only a button is pressed, so as not to require to be directly wiped by a user, and cost the user the time and labor force, thereby maximizing convenience in use. Consequently, according to the present invention, when dining tables or tables used by many users have to be wiped, the dining tables can be automatically wiped when only the button is pressed at each table, thereby eliminating inconveniences and waste of time which can be caused by individual manual wiping at restaurants and the like.
Patent KR-20220065914-A (KR)
Title: Auto Emergency Parking System for Drowsy Driver
Inventor: YUN TAE MIN
IPC: G06K9/00
Filed: 2020-11-13
Abstract: The present invention relates to a system for determining the condition of a driver and performing emergency parking by automatically driving a vehicle to a safe place through emergency driving when the driver drives while drowsy. The emergency parking system comprises: a camera (100) attached to the top of the dashboard of a vehicle to face the face of a driver and for photographing the face of the driver; a small computer (200) in which a driver drowsiness state detection system (210) for detecting a drowsy state of the driver by analyzing an image of the face of the driver captured through the camera (100) and transmitted, and a system control algorithm (220) for switching a driving mode according to the result of detection of the drowsy state of the driver and controlling the vehicle by following a driving route displayed in the safe place driving (420) of a navigation device (400) during emergency driving are installed; a driving mode switch (300) for switching between a normal driving mode (310) and an emergency driving mode (320) or between the emergency driving mode (320) and the normal driving mode (310) so that the driver can change the driving mode; and the navigation device (400) coupled with the small computer (200) to transmit data necessary for the system control algorithm (220) and display destination driving (410) and the safe place driving (420) to the driver according to the driving mode of the system.
Patent KR-20220065404-A (KR)
Title: Elevator button sterilization device
Inventor: KIM IL RYEL
IPC: A61L2/24
Filed: 2020-11-13
Abstract: The present invention relates to a device for sterilizing an elevator button unit, which is attached to a button unit of an elevator composed of a support plate and a button, performs a sterilization action, and comprises: a main body including a fixed part attached to the support plate and an irradiation part vertically connected to an upper portion of the fixed part and having an upper end bent to correspond to an upper portion of a button; an ultraviolet ray generation unit which is formed at the bottom surface of the irradiation part and irradiates the button with ultraviolet rays; a proximity sensor which turns off ultraviolet ray generation when a hand of a person is detected and turns on the ultraviolet ray generation when the hand of a person is not detected; and a control unit which limits an operation time of the ultraviolet ray generation unit. According to the present invention, it is possible to eliminate the anxiety of elevator users and prevent infection by completely destroying viruses on an elevator button using an ultraviolet sterilizer in the vicinity of the elevator button. As such, it is possible to enable the users to lead a healthy and safe daily life.
Patent KR-20210060348-A (KR)
Inventor: GOROCHOW LACEY
IPC: A61B17/12
Filed: 2020-11-17
Abstract: An implant system provided in the present specification comprises a binding wire, a pull wire, and a braided implant having a distal ring over the same. The binding wire has an elongated member having an engagement feature extending radially at a distal end thereof. A braid may be moved from a delivery shape sized to traverse a catheter to an implanted shape sized to occlude an aneurysm neck. When the braid is in the delivery shape, the pull wire and the elongated member extend through the distal ring, and the engagement feature is in a distal direction relative to the distal ring. Once at least a portion of the braid is positioned within an aneurysm, the pull wire and the elongated member are moved in the proximal direction. By coupling the engagement feature to the distal ring and moving the distal ring proximally, it is possible to reshape the braid within the aneurysm.
Patent KR-20200132816-A (KR)
Inventor: CHOI BO GYU
IPC: G05D1/02
Filed: 2020-11-18
Abstract: The present invention relates to an energy-saving method of a grain storage facility and grain processing facility in which electric energy is saved and lifespan shortening is prevented. The method comprises: A) a step of driving a plurality of transfer conveyors installed in either the grain storage facility or grain processing facility and operating a carry-in sensor installed in a carry-in part of the transfer conveyor and a carry-out sensor installed in a carry-out part of the transfer conveyor; B) a step of detecting whether grain is carried in by the carry-in sensor; C) a step of continuously operating the transfer conveyor by a controller when the carrying in of the grain is detected and detecting the carrying out of the grain by the carry-out sensor while the carrying in of the grain is not detected; D) a step of continuously maintaining the operation state of the transfer conveyor and stopping the transfer conveyor and a process facility connected to the transfer conveyor by the controller when the carry-out sensor remains undetected because the grain is not carried out; and E) a step of, if the carry-in sensor does not detect the grain and the carry-out sensor does not detect the grain, determining that the grain has been completely transferred and stopping the operation of at least one of the transfer facility, process facility, dust collection facility, and pneumatic facility. Accordingly, in a no-load state where the grain is not transferred, the transfer conveyor and the facility connected to the transfer conveyor are stopped together to save electrical energy, prevent wear of parts of the connected process facility, and reduce the frequency of failure.
Patent KR-20220070928-A (KR)
Title: Grid Type Air Purification Filter
Inventor: KO WON YOUNG
IPC: B01D46/00
Filed: 2020-11-23
Abstract: The present invention relates to a grid type air purification filter. The grid type air purification filter comprises: a vessel part arranged therein with a plurality of compartmentalized vessels in a grid pattern and a bottom surface of the vessel having a net shape to pass through air before and after purification; a cover part arranged therein with a plurality of compartmentalized covers in a grid pattern, and a ceiling surface facing the bottom surface having a net shape to pass through air before and after purification; and an absorbent charged in a charging room formed by the vessels and the covers when the vessel part and the cover part are assembled, and purifying the air in contact therewith after the air passes through the bottom surface or the ceiling surface. Since a separate sieve is not included or a use of the sieve is minimized, a structure or a producing process can be simplified by receiving an absorbent such as activated carbon.
Patent KR-20210150257-A (KR)
Inventor: JUNG CHUN SIK
IPC: A42B3/10
Filed: 2020-11-25
Abstract: The present invention relates to a helmet and, more specifically, to a helmet facilitating storage and preventing an external impact from being directly applied to a wearer's head. According to the present invention, the helmet comprises: a helmet body; an air cushion installed inside the helmet body to accommodate a wearer's head and having a plurality of independently partitioned air cells formed therein; a hard cap installed to surround the upper central part of the helmet body and impact resistance; and a double bending means including a first bending guide formed along the circumference of a position corresponding to the circumference of the hard cap in the helmet body and a second bending guide formed along the circumference of the helmet body at a position spaced apart from the first bending guide at a predetermined interval. Accordingly, upon pressing or external impact, the central part of the helmet body can maintain in a convex shape by the hard cap while the helmet body is folded by the double bending means.
Patent KR-20220073350-A (KR)
Title: 외부 데이터 연동을 통한 대화 서비스 제공 방법 및 장치
Inventor: CHO YONG SEOK
IPC: G06T13/40
Filed: 2020-11-26
Abstract: 본 발명은 외부 데이터 연동을 통한 대화 서비스 제공 방법 및 장치에 관한 것이다. 본 발명의 일 실시예에 따른 외부 데이터 연동을 통한 대화 서비스 제공 방법은 (a) 사용자의 질문 음성을 획득하는 단계; (b) 상기 질문 음성에 대한 음성인식을 수행하는 단계; (c) 상기 음성인식의 결과에 대응하여 정보 제공 데이터를 획득하는 단계; 및 (d) 상기 음성인식의 결과 및 정보 제공 데이터에 기반하여 답변 대화 문장을 출력하는 단계;를 포함할 수 있다.
Patent KR-20220073964-A (KR)
Title: 샘플링 실린더 성형용 열간스피닝 장치
Inventor: KIM DONG KYU
IPC: B21D22/18
Filed: 2020-11-27
Abstract: 본 발명은 샘플링 실린더 성형용 열간 스피닝 장치에 관한 것으로서, 더욱 상세하게는 파이프를 이용하여 열간 스피닝 장치의 성형수단이 기설정된 성형경로를 따라 구동되어 다양한 형상의 샘플링 실린더를 제조하는 샘플링 실린더 성형용 열간 스피닝 장치에 관한 것이다. 
파이프를 성형하여 입구부, 넥부, 몸체부로 이루어지는 샘플링 실린더를 제작하는 열간스피닝 장치에 있어서, 전방에 상기 파이프의 단부가 고정되어 장착되는 유압척과 상기 유압척 후방에 구비되어 상기 유압척을 일방향으로 회전시키는 회전수단과 상기 파이프의 전단을 일측에서 국부적으로 가열시키는 가열수단과 일단에 설치된 성형롤러가 가열된 상기 파이프의 전단을 가압하여 성형하는 성형수단;을 포함하는 샘플링 실린더 성형용 열간 스피닝 장치을 제공할 수 있다.
Patent KR-20220075692-A (KR)
Inventor: PARK HYUNG GYU
IPC: B62D25/02
Filed: 2020-11-30
Abstract: 본 발명은 리어램프리스 차량의 쿼터부 보강 구조에 관한 것으로, 리어램프가 장착되지 않는 차체 쿼터부의 강성을 별도의 추가 구성 없이 구조 변경만으로 효율적으로 개선할 수 있도록 한, 리어램프리스 차량의 쿼터부 보강 구조를 제공하는데 목적이 있다.
Patent KR-20220075771-A (KR)
Inventor: LEE CHANG YEON
IPC: B23K20/12
Filed: 2020-11-30
Abstract: 본 발명은 알루미늄 합금인 압출재를 벤딩하여 얻어진 조립부품을 포함한 다수의 조립부품을 결합하여 배터리하우징을 제조하는 방법으로, 알루미늄 합금인 압출재는 압출 후 벤딩하기 이전에 100℃ 내지 120℃에서 30분 내지 120분 동안 열처리하는 단계를 거친 것으로, 스프링백 현상을 최소화시켜 치수안정성을 향상시킴으로써 조립부품간 결합시 치수정밀도를 향상시키며, 이로써 궁극적으로 접합강도가 향상되고 기계적 강도를 향상시킴으로써 자동차의 경량화에 기여할 수 있는 배터리하우징을 제공할 수 있는 발명을 개시한다.
Patent KR-20220076643-A (KR)
Title: 식물재배기
Inventor: LEE YOO JIN
IPC: A01G27/02
Filed: 2020-12-01
Abstract: 본 발명은 식물재배기에 관한 것이다. 
보다 구체적으로는, 식물 재배를 위한 재배통을 다수 개 포함하되, 상기 재배통을 회전방식으로 관리할 수 있도록 구성된, 식물재배기에 관한 것이다.
Patent KR-20220081152-A (KR)
Inventor: KIM JANG SUB
IPC: C09K11/02
Filed: 2020-12-08
Abstract: 본 발명은 리간드로서 덴드리머 구조 또는 덴드론 구조와, 파이(π) 공액 구조를 포함하는 화합물을 포함하는 양자점, 이의 제조방법, 및 이를 포함하는 디스플레이 소자를 제공하기 위한 것이다.
Patent KR-20210093154-A (KR)
Title: Image sensor and method of operating thereof
Inventor: SIDDIQUE RADWANUL HASAN
IPC: G01J3/28
Filed: 2020-12-11
Abstract: The present invention relates to an image sensor and a method for operating the same. In accordance with the present invention, an optical spectroscope can be used to determine a spectral component of electromagnetic waves. A spectroscope may be a large and bulky device, and may require incoming waves at an almost direct incident angle to record a measurement. In the present invention, a miniature spectroscope with a nanophotonic component as a light dispersion technique is disclosed. The nanophotonic component includes a metasurface and a Bragg filter. Each metasurface contains a light scattering nanostructure which can be randomized to create a large input angle, and the Bragg filter can result in light dispersion independent of the input angle. The spectroscope can handle a bandwidth of about 200 nm. The miniature spectroscope can read image data of visible light (400 to 600 nm) and spectral data of near-infrared light (700 to 900 nm). Also, the surface area of the spectroscope is about 1 mm^2, which can be suitable for a mobile device. Accordingly, a high tolerance angle can be provided.
Patent KR-20220092707-A (KR)
Inventor: SON DONG IL
IPC: B29C65/48
Filed: 2020-12-24
Abstract: The present invention relates to an automotive interior material and a method for forming an automotive interior material and, more specifically, to a method for forming an automotive interior material by compressing a resin formed article and to an automotive interior material formed thereby. To this end, the method for forming an automotive interior material of the present invention comprises the steps of: heating a skin introduced into upper and lower heating heaters which are spaced apart from each other at regular intervals; pre-forming the heated skin by using an upper mold and a lower mold so as to have a predetermined shape, wherein the upper mold has a predetermined mold temperature, and the lower mold has a second mold temperature; and compressing the pre-formed skin and a core using a 1-1 mold and a 1-2 mold both of which have predetermined mold temperatures.
Patent KR-20220093779-A (KR)
Title: Bake apparatus and substrate treating apparatus
Inventor: BANG JAE OH
IPC: H01L21/687
Filed: 2020-12-28
Abstract: The present invention relates to a substrate processing apparatus. The substrate processing apparatus includes: a chamber having an upper body and a lower body combined with the upper body to form an inner space in which a process is processed; and a sealing member provided between the upper body and the lower body and sealing the inner space from the outside. The lower body is provided with a first seal groove into which the sealing member is inserted in an area in contact with the upper body. A second seal groove is formed in the upper body facing the sealing member and may be supported by the sealing member at two points.
Patent KR-20220094059-A (KR)
Title: Fast Cell Allocation Scheduling Devices and Method for Mobile Nodes in a 6TiSCH Network
Inventor: CHUNG SANGHWA
IPC: H04W40/12
Filed: 2020-12-28
Abstract: The present invention relates to an apparatus and method for scheduling high-speed cell allocation of a mobile node in a 6TiSCH network for establishing a mobile-root node fixed path, wherein the delay between a mobile node and a root node is minimized by allocating a fixed path to the root node when the link quality of the mobile node changes. The apparatus comprises: a link release detecting unit that detects a link release between a mobile node and a preferred parent node due to movement of the mobile node; a DIS message transmission unit that allows the mobile node to broadcast a DIS message in a shared cell; an unicast control message reception unit that receives an unicast control message when a shared cell of a neighboring node detects that a DIS message is sent from the mobile node and sends an unicast control message to the mobile node from an unicast dedicated Tx cell; a DIO message reception unit that receives a DIO message containing an own MAC address thereof propagated by neighboring nodes when an unicast DIO message toward the mobile node is sent from a shared cell; a preferred parent node setting unit that allows the mobile node to configure a routing path with a preferred parent node while minimizing DIO message collisions in a shared cell; and a packet transmission/reception unit that starts data transmission when a preferred parent node and a routing path are configured.
Patent KR-20220063679-A (KR)
Title: A lidar device
Inventor: NOH SU WOO
IPC: G02B17/06
Filed: 2020-12-29
Abstract: According to one embodiment of the present invention, a LIDAR device measuring a distance from a target by using at least one scanner comprises: a first scanner for widening a viewing angle in a first direction; a first emitter outputting first light so that the first light is reflected from the first scanner; a second emitter outputting second light so that the second light is reflected from the first scanner; a first director detecting at least a part of the first light and generating a first signal based on the detected first light; a second director detecting at least a part of the second light and generating a second signal based on the second light; and a control unit controlling an operation of the second emitter based on the first signal and determining a feature of the target based on the second signal.
Patent KR-20220095617-A (KR)
Inventor: BAE SUN YOUNG
IPC: C23C22/12
Filed: 2020-12-30
Abstract: The present invention provides a steel sheet surface treatment solution composition containing trivalent chromium that is harmless to the human body and environmentally friendly, a hot-dip galvanized steel sheet surface-treated using the same, and a manufacturing method thereof. According to an embodiment of the present invention, a steel sheet surface treatment solution composition containing trivalent chromium comprises: 15 to 30 wt% of a trivalent chromium compound; 1 to 4 wt% of a silane coupling agent; 0.5 to 2 wt% of a metal-based compound; 0.5 to 3 wt% of a phosphoric acid-based compound; 0.5 to 3 wt% of an organo-polyfunctional silane condensate; and the balance water.
Patent KR-20200026250-A (KR)
Title: 단일 세포를 캡슐화하는 방법, 캡슐화된 세포 및 이의 용도
Inventor: STEEMERS FRANK J
IPC: C12N5/00
Filed: 2019-04-15
Abstract: 본 명세서에서 제공 시스템, 방법 및 조성물의 실시형태는 단일 세포를 캡슐화하는 중공 비드에 관한 것이다. 일부 실시형태는 핵산 시퀀싱, 핵산 라이브러리 제조, 메틸화 상태 결정, 게놈 변이체 확인 또는 단백질 분석을 포함하여 중공 비드 내에 캡슐화된 단일 세포에 대해 다중의 공동-분석을 수행하는 것을 포함한다.
Patent KR-20200009134-A (KR)
Inventor: SHARIFI MATTHEW
IPC: G10L13/08
Filed: 2016-12-29
Abstract: 일부 구현예들에서, 클라이언트 디바이스의 사용자의 언어 능숙도가 하나 이상의 컴퓨터들에 의해 결정된다.  그 후, 하나 이상의 컴퓨터들은 사용자의 상기 결정된 언어 능숙도에 기초하여 텍스트-투-스피치 모듈에 의한 출력을 위한 텍스트 세그먼트를 결정한다.  출력을 위한 텍스트 세그먼트를 결정한 후에, 하나 이상의 컴퓨터들은 텍스트 세그먼트의 합성된 발언을 포함하는 오디오 데이터를 생성한다.  그 후, 텍스트 세그먼트의 합성된 발언을 포함하는 오디오 데이터는 출력을 위해 클라이언트 디바이스에 제공된다.  개선된 사용자 인터페이스가 보다 나은 텍스트-투-스피치 변환을 통해 제공된다.
Patent KR-20200015818-A (KR)
Title: 무전해 도금 하지제
Inventor: SAITO DAIGO
IPC: C23C18/18
Filed: 2013-09-12
Abstract: [과제] 환경을 배려하여, 적은 공정수로 간편하게 처리할 수 있고, 또한 저비용화를 실현할 수 있는, 무전해 도금의 전처리 공정으로서 이용되는 새로운 하지제의 제공. 
[해결수단] 기재 상에 무전해 도금처리에 의해 금속 도금막을 형성하기 위한 하지제로서, 암모늄기를 분자 말단에 가지며 또한 중량평균분자량이 500~5,000,000인 하이퍼브랜치 폴리머, 금속 미립자 및 알콕시실란을 포함하는 하지제.
Patent KR-20200021536-A (KR)
Title: 광섬유 리본 조립체 및 그 제조 방법
Inventor: FALLAHMOHAMMADI EHSAN
IPC: G02B6/44
Filed: 2017-07-11
Abstract: 본 발명은 광섬유 리본 조립체에 관한 것으로, 이는 * 길이방향으로 연장되고 평면에 배열된 복수의 인접한 광섬유 리본으로서 - 각각의 광섬유 리본은 매트릭스 재료에 의해 서로 결합된 복수의 광섬유를 포함하고, 섬유는 길이방향으로 연장되고 평면에 배열됨 -; 상기 복수의 인접한 리본은 상기 2개의 인접한 리본 사이에 간극을 갖는 2개의 인접한 리본의 적어도 하나의 세트를 형성하는, 복수의 인접한 광섬유 리본; 및 * 세트의 인접한 2개의 리본 사이의 간극에 간헐적인 결합부를 형성하여 세트의 2개의 인접한 리본을 결합하는 결합 재료를 포함한다.  본 발명은 또한 이러한 광섬유 리본 조립체를 제조하는 방법에 관한 것이다.
Patent KR-20200033326-A (KR)
Title: 압전성 재료 기판과 지지 기판의 접합체 및 그 제조 방법
Inventor: HORI YUJI
IPC: H01L41/09
Filed: 2018-11-09
Abstract: [과제] 니오븀산리튬 등의 재질을 포함하는 압전성 재료 기판과, 산화규소층이 마련된 지지 기판을 접합하는 데 있어서, 접합체의 특성 열화를 억제할 수 있도록 하는 것이다. 
[해결수단] 접합체(8A)는, 지지 기판(3), 지지 기판(3) 상에 마련된 산화규소층(7) 및 산화규소층(7) 상에 마련된, 니오븀산리튬, 탄탈산리튬 및 니오븀산리튬-탄탈산리튬을 포함하는 군에서 선택된 재질을 포함하는 압전성 재료 기판(1A)을 구비한다. 산화규소층(7)에 있어서의 질소 농도의 평균값이, 산화규소층(7)과 지지 기판(3)의 계면(E)에 있어서의 질소 농도 및 산화규소층(7)과 압전성 재료 기판(1A)의 계면(D)에 있어서의 질소 농도보다 높다.