Title:
SURFACE ACOUSTIC WAVE DEVICE AND ITS MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2002/056466
Kind Code:
A1
Abstract:
A surface acoustic wave device comprises a piezoelectric substrate (12) of a rectangular plate shape for propagating a Rayleigh wave; a comb-like electrode (13) provided by forming an interdigital electrode on the piezoelectric substrate, and a reflector (14). The end face of each short side of the piezoelectric substrate at least on the top surface side is generally parallel to a conductor strip provided the end of the reflector (14) in the position of a virtual node (J) of a stress wave (T) generated from the conductor strip and is a vertical smooth surface. As a result, the end faces serve as reflecting end faces (15, 16) reflecting them stress wave.
Inventors:
MAEDA YOSHIO (JP)
KOMATSU SHOUICHI (JP)
KINOSHITA YUSUKE (JP)
KOMATSU SHOUICHI (JP)
KINOSHITA YUSUKE (JP)
Application Number:
PCT/JP2001/010953
Publication Date:
July 18, 2002
Filing Date:
December 13, 2001
Export Citation:
Assignee:
SEIKO EPSON CORP (JP)
MAEDA YOSHIO (JP)
KOMATSU SHOUICHI (JP)
KINOSHITA YUSUKE (JP)
MAEDA YOSHIO (JP)
KOMATSU SHOUICHI (JP)
KINOSHITA YUSUKE (JP)
International Classes:
H03H3/08; H03H9/00; H03H9/02; H03H9/05; H03H9/25; (IPC1-7): H03H9/25; H03H9/145; H03H3/08
Foreign References:
| JPS62111513A | 1987-05-22 | |||
| JPH0946169A | 1997-02-14 | |||
| JPS60251711A | 1985-12-12 |
Attorney, Agent or Firm:
Kamiyanagi, Masataka c/o Intellectual Property Division SEIKO EPSON CORPORATION 3-5 (Owa 3-Chome Suwa-Shi, Nagano, JP)
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