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1. (WO2018101359) PIEZOELECTRIC ELEMENT AND MUSICAL INSTRUMENT
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/101359 International Application No.: PCT/JP2017/042897
Publication Date: 07.06.2018 International Filing Date: 29.11.2017
IPC:
H01L 41/193 (2006.01) ,H01G 7/02 (2006.01) ,H01L 41/047 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
16
Selection of materials
18
for piezo-electric or electrostrictive elements
193
Macromolecular compositions
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
G
CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
7
Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
02
Electrets, i.e. having a permanently-polarised dielectric
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41
Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02
Details
04
of piezo-electric or electrostrictive elements
047
Electrodes
Applicants: YUPO CORPORATION[JP/JP]; 3, Kandasurugadai 4-chome, Chiyoda-ku, Tokyo 1010062, JP
YAMAHA CORPORATION[JP/JP]; 10-1, Nakazawa-cho, Naka-ku, Hamamatsu-shi, Shizuoka 4308650, JP
Inventors: KOIKE Hiroshi; JP
SUGAMATA Yuutarou; JP
IIDA Seiichiro; JP
HIYAMA Kunio; JP
SASAKI Suguru; JP
KODAMA Hidekazu; JP
Agent: TAKAOKA Ryoichi; JP
ODA Nao; JP
IWAHORI Akiyo; JP
TAKAGI Takako; JP
HIGUCH Yoshihiro; JP
Priority Data:
2016-23194630.11.2016JP
Title (EN) PIEZOELECTRIC ELEMENT AND MUSICAL INSTRUMENT
(FR) ÉLÉMENT PIÉZOÉLECTRIQUE ET INSTRUMENT DE MUSIQUE
(JA) 圧電素子および楽器
Abstract:
(EN) Provided are: a piezoelectric element using an electret material that is lightweight and flexible, and having an electrode layer that is also lightweight, wherein the electrode layer has high conductivity and excellent flexibility to ensure that electric signals generated from the electret are easily detected, and also has excellent durability; and a musical instrument having the piezoelectric element. The piezoelectric element has an electrode layer (B) on at least one surface of an electret material (A) having pores therein, and is characterized in that the porosity of the electret material (A) is 20-80%, the electrode layer (B) contains 20-70 mass% of fine particles of carbon, and the thickness of the electrode layer (B) is 2-100 µm.
(FR) La présente invention concerne : un élément piézoélectrique utilisant un matériau électret qui est léger et flexible, et ayant une couche d'électrode qui est également légère, la couche d'électrode présentant une conductivité élevée et une excellente flexibilité permettant de garantir que des signaux électriques générés à partir de l'électret sont facilement détectés, et présentant également une excellente durabilité ; et un instrument de musique pourvu de l'élément piézoélectrique. L'élément piézoélectrique présente une couche d'électrode (B) sur au moins une surface d'un matériau électret (A) dans lequel se trouvent des pores, et est caractérisé en ce que la porosité du matériau électret (A) est comprise entre 20 et 80 %, la couche d'électrode (B) contient de 20 à 70 % en masse de fines particules de carbone, et l'épaisseur de la couche d'électrode (B) est comprise entre 2 et 100 µm.
(JA) 軽量性と柔軟性を有するエレクトレット材料を用いた圧電素子であって、電極層もまた軽量であり、エレクトレットからの電気信号を拾いやすいように電極層の導電性が高く柔軟性に優れ、且つ電極層の耐久性に優れた圧電素子の提供。および当該圧電素子を備えた楽器の提供。 内部に空孔を有するエレクトレット材料(A)の少なくとも片方の面に電極層(B)を有する圧電素子であって、前記エレクトレット材料(A)の空孔率が、20~80%であり、前記電極層(B)が、炭素の微粒子を20~70質量%を含有し、且つ前記電極層(B)の厚みが、2~100μmであることを特徴とする圧電素子。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)