Kyocera Corporation

Toru Fukano

Junya Nishii

Atsuomi Fukuura

Yasushi Sato

Yuji Kishida

Hideharu Kurioka

Hiroyasu Tanaka

Yoshihiro Ookubo

Masato Shinya

A biosensor, including: a first cover member comprising an element-accommodating recess in an upper face thereof; a detection element using a surface acoustic wave, the detection element including an element substrate accommodated in the element-accommodating recess, and at least one detection unit located on an upper face of the element substrate configured to perform detection of an analyte; and a second cover member joined to the first cover member and covering the detection element, and including an inflow port from which the analyte flows in and a groove which extends from the inflow port to at least above the at least one detection unit and constitutes a capillary.

Biosensor

An SAW device () has a piezoelectric substrate () propagating acoustic waves, and a comb-shaped electrode () arranged on a first surface () of the piezoelectric substrate (). The SAW device () has a columnar terminal () located on the first surface () and electrically connected to the comb-shaped electrode (), and a cover member () covering the a side surface of the terminal (). The terminal () comprises, in a first region in the height direction of height thereof, a larger diameter on the side of the first surface () compared with the diameter on the side opposite to the first surface ().

Acoustic wave device and method for manufacturing same

Provided is a method for manufacturing a surface acoustic wave apparatus that can reduce degradation of electric characteristics and also reduce the number of manufacturing processes. The method for manufacturing a surface acoustic wave apparatus includes the steps of: forming an IDT electrode on an upper surface of a piezoelectric substrate, forming a frame member surrounding a formation area in which the IDT electrode is formed on the piezoelectric substrate, and mounting a film-shaped lid member on the upper surface of the frame member so as to be joined to the frame member so that a protective cover, used for covering the formation area and for providing a tightly-closed space between it and the formation area, is formed.

Method for manufacturing surface acoustic wave apparatus

To provide a biosensor including a suctioning mechanism while using a detection element such as a surface acoustic wave device, included are: a first cover memberincluding an element-accommodating recesson an upper face thereof; a detection elementincluding an element substrate, and at least one detection unitlocated on the upper face of the element substrateto perform detection of an analyte; and a second cover memberjoined to the first cover memberand covering the detection element, and including an inflow portfrom which the analyte flows in and a grooveextending from the inflow portto at least above the detection unit.

An SAW device () has a piezoelectric substrate () propagating acoustic waves, and a comb-shaped electrode () arranged on a first surface () of the piezoelectric substrate (). The SAW device () has a columnar terminal () located on the first surface () and electrically connected to the comb-shaped electrode (), and a cover member () covering a side surface of the terminal (). The terminal () comprises, in a first region in the direction of height thereof, a larger diameter on the side of the first surface () compared with the diameter on the side opposite to the first surface ().

Provided is a highly reliable acoustic wave device wherein deterioration of electrical characteristics due to deformation of a protective cover is suppressed. A method for manufacturing such acoustic wave device is also provided. The acoustic wave device has a piezoelectric substratepropagating an acoustic wave; an excitation electrode arranged on a first main surface of the piezoelectric substrate; a columnar outside connection-use electrodeelectrically connected to the excitation electrode; a protective coverhaving a hollow accommodating spacein which the excitation electrode is accommodated on the first main surface; and a conductive layerconnected to the electrodeon the protective cover

Acoustic wave device comprising an inter-digital transducer electrode

A small and highly reliable acoustic wave device and a method for production of the same will be provided. The acoustic wave device has a piezoelectric substrate; a SAW elementon one main surface of the piezoelectric substrate; an outside connection-use conductorformed on the one main surface of the piezoelectric substrateand electrically connected to the SAW element; a columnar electrodeon the outside connection-use conductor; and a protective coverdefining inner walls of a vibration spacefor vibration of the SAW elementand planarly surrounding a side surface of the columnar electrode

Acoustic wave device and method for production of same

A method for fabricating a small and low-profile surface acoustic wave device which can be formed collectively by a wafer process without causing deterioration in characteristics is provided. The surface acoustic wave device has a piezoelectric substrate, an IDTformed on one major surface of the piezoelectric substrateand having at least one comb-shaped electrode, and a protective coverforming a hollow containing spacewith the one major surface by covering the IDTabove the one major surface. The protective coveris provide with a through holeand composed, at least partially, of a photocurable material containing an acid generator which contains fluorine.

Surface acoustic wave device and method for production of same

A surface acoustic wave device excellent in reliability and a method of manufacturing the same are provided. The surface acoustic wave device comprises a piezoelectric substrate () for propagating an surface acoustic wave thereon, an IDT () formed on a first main surface of the piezoelectric substrate () and a protective cover () formed of a photocurable material and covering a formation region of the IDT (), thereby forming a hollow containing space () together with the first main surface, which has an acid generating portion containing an acid-generating agent in a region at its lower end. The surface acoustic wave device further comprises a connecting line () formed on the first main surface and connected to the IDT (), being drawn out from the inside of the protective cover () to the outside thereof to have an end portion at the outside of the protective cover (), and a bonding film () formed of an insulating material and so formed as to be interposed at least between the acid generating portion of the protective cover () and the connecting line ().

Surface acoustic wave device and method of manufacturing the same

Plural layers of metallic particle layers in which metallic particles having morphological anisotropy are dispersed and dielectric layers are alternately stacked on at least one pricipal surface of a substrate having transparency to form a polarizing layer. The content of the group 0 elements in the polarizing layer is kept not higher than 1.5.times.10.sup.20 molecules/cm.sup.3.

Polarizer and a production method thereof and an optical isolator

A metal such as Au and a dielectric such as borosilicate glass are simultaneously sputtered to form a film on a glass substrate. Next, this film is heated to grow metal particulates. Next, the substrate is drawn on heating to give an anisotropy to the metal particulates and produce a polarizer. The metal particulates are spheroidal and are dispersed almost homogeneously in the dielectric.

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Kyoto, Japan

Toru Fukano