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1. (WO2007010663) BOUNDARY ACOUSTIC WAVE DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/010663 International Application No.: PCT/JP2006/309464
Publication Date: 25.01.2007 International Filing Date: 11.05.2006
IPC:
H03H 9/145 (2006.01) ,H03H 9/25 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
02
Details
125
Driving means, e.g. electrodes, coils
145
for networks using surface acoustic waves
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
25
Constructional features of resonators using surface acoustic waves
Applicants:
株式会社村田製作所 MURATA MANUFACTURING CO., LTD. [JP/JP]; 〒6178555 京都府長岡京市東神足1丁目10番1号 Kyoto 10-1, Higashikotari 1-chome, Nagaokakyo-shi, Kyoto 6178555, JP (AllExceptUS)
神藤 始 KANDO, Hajime [JP/JP]; JP (UsOnly)
Inventors:
神藤 始 KANDO, Hajime; JP
Agent:
宮▲崎▼ 主税 MIYAZAKI, Chikara; 〒5400012 大阪府大阪市中央区谷町1丁目5番4号 大同生命ビル6階 Osaka 6F, Daido Seimei Bldg. 5-4, Tanimachi 1-chome Chuo-ku, Osaka-shi Osaka 540-0012, JP
Priority Data:
2005-21256122.07.2005JP
Title (EN) BOUNDARY ACOUSTIC WAVE DEVICE
(FR) DISPOSITIF A ONDES ACOUSTIQUES DE LIMITE
(JA) 弾性境界波装置
Abstract:
(EN) A boundary acoustic wave device by which SH type boundary acoustic wave can be utilized while employing an inexpensive quartz substrate, and physical properties such as electromechanical coupling coefficient K2 and characteristics can be enhanced. In the boundary acoustic wave device (1) where at least an IDT (4) is formed on a quartz substrate (2), a dielectric (3) is formed to cover the IDT (4) and a boundary acoustic wave propagates on the interface between the quartz substrate (2) and the dielectric (3), thickness of the IDT (4) is set such that an SH type boundary wave has a sound velocity lower than those of slow transverse waves respectively propagating through the quartz substrate (2) and the dielectric (3), and the Eulerian angles of the quartz substrate (2) fall within shaded regions in Fig. 13.
(FR) La présente invention se rapporte à un dispositif à ondes acoustiques de limitepar lequel une onde acoustique de limitede type SH peut être utilisée tout en employant un substrat de quartz peu onéreux et l'on peut améliorer les propriétés physiques comme le coefficient de couplage électromécanique (K²) et les caractéristiques. Dans le dispositif d'onde acoustique delimite (1) où au moins un IDT (4) est formé sur un substrat de quartz (2), un diélectrique (3) est formé pour couvrir l'IDT (4) et une onde acoustique de limite se propage sur l'interface entre le substrat de quartz (2) et le diélectrique (3), l'épaisseur de l'IDT (4) est réglée de sorte qu'une onde de limite de type SH ait une vitesse sonore inférieure à celle d'ondes transversales lentes se propageant respectivement via le substrat de quartz (2) et le diélectrique (3), et les angles eulériens du substrat de quartz (2) entrent dans les régions ombrées de la Fig. 13.
(JA)  安価な水晶基板を用い、しかもSH型弾性境界波を利用することが可能であり、電気機械結合係数K2等の物性や特性を高めること等が可能な弾性境界波装置を提供する。  水晶基板2上に、少なくともIDT4が形成されており、IDT4を覆うように、誘電体3が形成されており、水晶基板2と誘電体3との界面を弾性境界波が伝搬する弾性境界波装置であって、IDT4の厚みは、SH型境界波の音速は、水晶基板2を伝搬する遅い横波及び誘電体3を伝搬する遅い横波の各音速よりも低音速となるように設定されており、かつ水晶基板2のオイラー角が、図13に示されている斜線を付した領域内とされている、弾性境界波装置1。
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
KR1020080008396KR1020090130873EP1909392US20080111450CN101213743