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1. 发明专利

JPH07327297A PIEZOELECTRIC SPEAKER 失效
公开(公告)号：JPH07327297A
公开(公告)日：1995-12-12
申请号：JP14095394
申请日：1994-05-31
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： NAKATANI CHITOSE , SADAMURA SHIGERU , ENDO SHIGEO
IPC分类号： H04R17/00
摘要： PURPOSE:To provide a piezoelectric speaker which is very superior in frequency characteristics, etc. CONSTITUTION:This piezoelectric speaker is equipped with a compound piezoelectric body sheet 4 formed by arraying many piezoelectric elements in a sheet type organic material, electrodes 6A and 6B which are provided on both the surfaces of the compound piezoelectric body sheet 4, an acoustic impedance matching holding layer 8 which is extended between the electrodes to hold the compound piezoelectric body sheet 4 in a curved shape and matches the acoustic impedance, and a holding frame which holds the periphery of the compound piezoelectric body sheet 4. Consequently, sound can be reproduced with small distortion and excellent frequency characteristics.

2. 发明专利

JPH05210933A SUBSTRATE FOR PRODUCTION OF SLIDER 失效
公开(公告)号：JPH05210933A
公开(公告)日：1993-08-20
申请号：JP1613192
申请日：1992-01-31
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： MUNEMOTO TAKAYUKI , FUTAMOTO MASAAKI , TAKANO KOJI , NISHIYAMA SHUNICHI , NOGUCHI KAZUMI , SADAMURA SHIGERU , WATANABE JUNICHI
IPC分类号： G11B21/10 , G11B21/21
摘要： PURPOSE:To obtain the substrate suitable for production of a slider having a piezoelectric type actuator by alternately laminating layers of piezoelectric elements and layers of conductive materials, thereby constituting the substrate. CONSTITUTION:The substrate base material 1 is formed by alternately laminating the piezoelectric materials 2 and the conductive materials 3. This base material 1 is cut out in the direction perpendicular to the lamination plane and the substrate 1a is cut out in the direction parallel with the lamination, by which the substrate 1b is obtd. Plural magnetic heads corresponding to the plural slider components are formable by a thin film forming process vertically and horizontally respectively on the plate surfaces alpha, beta of these substrates 1a, 1b. Then, the sliders provided with the means for positioning the magnetic heads with the piezoelectric elements are easily produced.

3. 发明专利

JPS63168148A HEMOMANOMETER 失效
公开(公告)号：JPS63168148A
公开(公告)日：1988-07-12
申请号：JP31313286
申请日：1986-12-29
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： TAKEUCHI HIROYUKI , NAKATANI CHITOSE , KATAKURA KAGEYOSHI , SADAMURA SHIGERU , MARUTA KENJI
IPC分类号： A61B5/022 , A61B5/02

4. 发明专利

JPH0294579A ELECTROSTRICTIVE PORCELAIN COMPOSITION FOR ULTRASONIC VIBRATOR 失效
公开(公告)号：JPH0294579A
公开(公告)日：1990-04-05
申请号：JP24412788
申请日：1988-09-30
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： MASUZAWA YUTAKA , SADAMURA SHIGERU , TAKEUCHI HIROYUKI , ITO YUKIO , NAKATANI CHITOSE
IPC分类号： C04B35/00 , C04B35/46 , H01L41/187 , H04R17/00 , H04R17/08
摘要： PURPOSE:To obtain a composite electrostrictive material made of electrostrictive porcelain composition and polymer substance and having high performance and an ultrasonic vibrator and an ultrasonic probe to be controlled at its electroacoustic conversion efficiency according to a bias electric field intensity by holding powder of specific porcelain composition in sheetlike polymer or vertically burying many fine columnar porcelains of the composition in the sheet face of the polymer. CONSTITUTION:The composition of an electrostrictive porcelain for an ultrasonic vibrator is generated by a general formula (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3, where 0.05

5. 发明专利

JPH01244683A MANUFACTURE OF COMPOUND PIEZOELECTRIC BODY 失效
公开(公告)号：JPH01244683A
公开(公告)日：1989-09-29
申请号：JP7148288
申请日：1988-03-25
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： ARAI YASUO , SADAMURA SHIGERU , NAKATANI CHITOSE
IPC分类号： H01L41/45
摘要： PURPOSE:To enable the easy and efficient manufacture of compound piezoelectric body of high performance and high precision wherein electro-mechanical coupling-coefficient is large and acoustic impedance is small, by retaining pillar type piezoelectric members in an integrated body with an organic body compound of organic material. CONSTITUTION:On the upper surface of a PZT plate 10 of (t) thick, a plurality of trenches 12 intersecting with each other in the form of a mesh are formed, whose widths and depth are w1, w2 and d (d w1) are arranged at pitches 2p1, and a belt type conducting layer composed of conducting layer metal material is formed. Then the masking materials 15 are exfoliated and eliminated.

6. 发明专利

JPH01244682A MANUFACTURE OF COMPOUND PIEZOELECTRIC BODY 失效
公开(公告)号：JPH01244682A
公开(公告)日：1989-09-29
申请号：JP7148188
申请日：1988-03-25
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： ARAI YASUO , SADAMURA SHIGERU , NAKATANI CHITOSE
IPC分类号： H01L41/45
摘要： PURPOSE:To enable easy and efficient manufacture of a compound piezoelectric body of high performance and high precision wherein electro-mechanical coupling-coefficient is large and acoustic impedance is small, by forming a piezoelectric board as a pillar type piezoelectric members of minute dimension, and retaining the pillar type piezoelectric members in an integrated body with an organic body compound of organic material. CONSTITUTION:On the upper surface of a PZT plate 10 of t0 thick, a plurality of trenches 11 intersecting each other in the form of a mesh are formed, whose width and depth are (w) and d1 (d1

7. 发明专利

JPH03184385A MANUFACTURE OF LAMINATE PIEZOELECTRIC DEVICE 失效
公开(公告)号：JPH03184385A
公开(公告)日：1991-08-12
申请号：JP32338789
申请日：1989-12-13
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： KONO AKIOMI , HARADA TAKESHI , KANAMARU MASATOSHI , SADAMURA SHIGERU
IPC分类号： H01L41/083 , H01L41/09
摘要： PURPOSE:To prevent characteristics of a piezoelectric device from being deteriorated by restricting a modified layer and improve reliability by heating a junction part with microwave. CONSTITUTION:A laminate yielded by alternately laminating an electrode foil (electrode layer) 2 where an Al-Si alloy skin material is clad on both side of an Al core material and a laminated piezoelectric ceramic 1 already calcined is placed in a joining furnace and the joining furnace is evacuated to vacuum. Thereafter pressure is applied to the laminate to which microwaves are applied. The heating after holding the laminate only during several seconds is stopped and the laminate is cooled to room temperature.

8. 发明专利

JPH02294199A COMPOSITE PIEZOELECTRIC BODY 失效
公开(公告)号：JPH02294199A
公开(公告)日：1990-12-05
申请号：JP11463589
申请日：1989-05-08
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： ARAI YASUO , SADAMURA SHIGERU , NAKATANI CHITOSE , TAKEUCHI HIROYUKI
IPC分类号： G01N29/24 , A61B8/00 , H04R17/00
摘要： PURPOSE:To increase the strength of a part in the neighborhood of a side electrode by cutting the edge part of a rectangular electrode extending over two adjacent array grooves of a notched part, and communicating a segmentation groove with a parting groove at the notched part. CONSTITUTION:Plural rectangular electrodes 4 are formed by embedding plural columnar bodies 1 made of a piezoelectric material in an organic body 2, sticking electrodes 6 formed in thin film shape on the surface and back planes and a pair of side planes, and providing a slit shape array groove 5 intersecting orthogonally to the pair of side planes at the electrode on the surface. Also, a common electrode 8 is formed by providing the parting grooves 9 in parallel with the pair of side planes in the neighborhood of the pair of side planes of the electrode on the back plane, and the notched part 10 is provided extending over the adjacent array grooves 5 and also so as to cut the edge part of the rectangular electrode 4. And the slit shape segmentation groove 7a to segment the electrode 6 on the side plane and to communicate with the parting groove 9 is provided in the notched part, and the side electrode 6 which communicates with the rectangular electrode 4 is formed alternately and at every two positions. Thereby, it is possible to increase the strength by increasing a traverse area in the neighborhood of the side electrode, and to prevent the columnar body and the organic body from being peeled or dropped.

9. 发明专利

JPH03184386A LAMINATE PIEZOELECTRIC DEVICE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03184386A
公开(公告)日：1991-08-12
申请号：JP32338889
申请日：1989-12-13
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： HARADA TAKESHI , KANAMARU MASATOSHI , KONO AKIOMI , SADAMURA SHIGERU
IPC分类号： H01L41/083 , H01L41/09
摘要： PURPOSE:To improve wet-resistance, i.e., reliability and reduce the cost of manufacture by forming a metal layer of a laminate piezoelectric device with a metal material such as nickel or copper. CONSTITUTION:On the surface of piezoelectric ceramic 1 a metal film 2 taking as ingredients a metal material of any one of nickel-phosphorus alloy, copper, copper-phosphorus alloy, and copper-zinc alloy is formed. A laminate is formed by laminating piezoelectric ceramic covered with such a metal film and heating the same with pressurization.

10. 发明专利

JPH0342884A LAMINATE TYPE PIEZOELECTRIC ELEMENT 失效
公开(公告)号：JPH0342884A
公开(公告)日：1991-02-25
申请号：JP17782989
申请日：1989-07-10
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： HARADA TAKESHI , KANAMARU MASATOSHI , KONO AKIOMI , SADAMURA SHIGERU
IPC分类号： H01L41/083 , H01L41/09
摘要： PURPOSE:To form minute electric insulators and make operating voltage low and then, improve reliability to contrive a low manufacturing cost by oxidizing a part of each electrode which is not in contact with a lead terminal out of Al aluminum electrodes that are exposed to the side face of a laminate by anode oxidation and further, sealing holes that are still existent by an electrophoresis process. CONSTITUTION:An alternate laminate 6 is formed by laminating piezoelectric ceramic 1 and Al aluminum alloy electrodes 2 which have areas smaller than those of the above ceramics and a temporary electrode 10 is formed at a position where an end face of each electrode is exposed every other layer out of the side faces of the laminate. Subsequently, the temporary electrode 10 is immersed in an electrolyte 9 in such a way as to allow a dc power source 8 to be connected so that the temporary electrode 10 may act as an anode and a metal 7 having an ionization tendency larger than that of the temporary electrode 10 may act as a cathode. The surface of each electrode 2 connecting to the temporary electrode 10 is anodized by use of a device mentioned above and a porous oxide layer is formed. Then, sealing treatment is performed with resin at the inside and surface of each hole in the porous oxide layer located on the surface of each electrode 2 that is anodized in such a way that an electrophoresis process is performed by immersing the porous oxide layer in a dilute electrolyte in which resins are scattered without immersing it in the electrolyte. Then, minute electric insulation compounds are formed at the edge faces of the electrodes 2 and insulation is made between each lead terminal for extracting to the outside and each internal electrode.

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