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1. 发明专利

JPH09261978A LAMINATED ELEMENT AND VIBRATION DRIVER 失效
公开(公告)号：JPH09261978A
公开(公告)日：1997-10-03
申请号：JP6835496
申请日：1996-03-25
申请人： NIHON CEMENT , CANON KK
发明人： MARUYAMA YUTAKA , KOJIMA NOBUYUKI , YAMAKAWA TAKAHIRO , EZAKI TORU
IPC分类号： B06B1/06 , H01L41/083 , H01L41/09 , H01L41/22 , H02N2/00 , H02N2/04
摘要： PROBLEM TO BE SOLVED: To reduce the loss of vibrating energy as much as possible by incorporating silver in metal component of an electrode material, and setting the silver to a specific amount or less. SOLUTION: A laminated element is obtained by alternately superposing a plurality of electrode layers 2' at one surface side of piezoelectric ceramics 1 and sintering it. The electrode material contains silver in metal component so that the silver is about 50wt.% or less. Thus, a vibration system containing the laminated element itself is used to excite it in the state substantially near the resonance, and the loss of the vibration energy at the time of driving is reduced. As a result, the laminated element in which the output is large and small generation of heat can be obtained.

2. 发明专利

JPH08288607A MANUFACTURE OF PIEZOELECTRIC MATERIAL AND PASTE FOR FORMING CONDUCTOR OF PIEZOELECTRIC MATERIAL 失效
公开(公告)号：JPH08288607A
公开(公告)日：1996-11-01
申请号：JP11655195
申请日：1995-04-18
申请人： NIHON CEMENT
发明人： EZAKI TORU , KATAOKA MASAKO , YAMAKAWA TAKAHIRO , TAKAHASHI SHIGERU
IPC分类号： H05K1/09 , H01L41/083 , H01L41/187 , H01L41/22
摘要： PURPOSE: To suppress the growth and densification of particles by adding niobium oxide and/or antimony oxide to paste for forming conductor composed mainly of silver and palladium or palladium. CONSTITUTION: Paste for forming conductor is prepared by adding 70 pts.wt. ethyl cellulose, DBP, and α-terpineol and 20 pts.wt. PZT powder having the same composition as that a piezoelectric ceramic sheet has. Then Nb2 O5 and/or Sb2 O3 is added to the paste at a rate of 10-100μg/cm and the paste is printed on the piezoelectric ceramic sheet. A plurality of printed ceramic sheet are laminated, pressed, and sintered. The growth and densification of particles can be suppressed by lowering the driving force of sintering by lowering the surface energy of the PZT particles or lowering the sintering speed by hindering the diffusion of the ions constituting the PZT.

3. 发明专利

JPH08283069A PIEZOELECTRIC CERAMIC AND ITS PRODUCTION 失效
公开(公告)号：JPH08283069A
公开(公告)日：1996-10-29
申请号：JP10713795
申请日：1995-04-07
申请人： NIHON CEMENT
发明人： KATAOKA MASAKO , EZAKI TORU , YAMAKAWA TAKAHIRO , TAKAHASHI SHIGERU
IPC分类号： C04B35/49
摘要： PURPOSE: To improve the degree of deterioration even under high voltage load and to obtain a piezoelectric ceramic less liable to the reduction of energy transducing efficiency than conventional ceramics by introducing specified substitutive elements into PZT type piezoelectric ceramics. CONSTITUTION: The compsn. of this piezoelectric ceramic is represented by the formula Pb1-a-b Sra (Zrm Tin Mnx Nby Sbz )O1+2m+2n+2.5y+1.5z-b (where 0

4. 发明专利

JPH06252288A MANUFACTURE OF CERAMIC MULTILAYER SUBSTRATE 失效
公开(公告)号：JPH06252288A
公开(公告)日：1994-09-09
申请号：JP5637093
申请日：1993-02-23
申请人： NIHON CEMENT
发明人： EZAKI TORU , YAMAKAWA TAKAHIRO , SUGANO OSAMU , TAKAHASHI SHIGERU
IPC分类号： B32B18/00 , H01L23/12 , H05K3/46
摘要： PURPOSE:To provide a method for-the manufacture of multilayer substrates which does not necessitate any precision metal molds in laminating and pressing ceramic green sheets. CONSTITUTION:Binder is applied to a green sheet, and an upper sheet is aligned and placed thereon. Compressed air is blown under a pressure within the elastic deformation range of the green sheets, to bond them together. The process above is repeated until a required number of green sheets are laminated and bonded. The edges of the resultant laminated body are cut to form it into a required shape, and it is then fired. Since green sheets are pressed under an air pressure within their elastic deformation region in the method, the laminated sheets will be not be deformed. The method allows multilayer sheets having recesses or notches to be laminated and bonded with precision, and causes no variation in shrinkage percentage due to plastic deformation after firing. This obtains multilayer substrates having a precise shape without need for precise metal molds for press.

5. 发明专利

JPH05315754A FORMING METHOD FOR CIRCUIT ON LOW TEMPERATURE BAKED CERAMIC MULTILAYER CIRCUIT BOARD 失效
公开(公告)号：JPH05315754A
公开(公告)日：1993-11-26
申请号：JP14218592
申请日：1992-05-07
申请人： NIHON CEMENT
发明人： NAKAI KYOICHI , EZAKI TORU , ASAUMI JUNJI , SUGANO OSAMU
IPC分类号： H05K3/06 , H05K3/46
摘要： PURPOSE:To narrow an interval between Cu conductors by combining a screen printing method with a photolithographic technique. CONSTITUTION:After a ceramic green sheet is manufactured, it is cut, and through holes are further formed. Ag paste for charging the holes and Ag paste for inner wirings are screen printed, and the sheets are laminated and integrated. This laminate is baked to obtain a low temperature-baked ceramic multilayer circuit board 1. Thick film Cu paste is screen printed on the baked board 1, dried and then baked at 600 deg.C in a nitrogen atmosphere. Then, a photoresist dry film is laminated, and pattern-exposed through a photomask. Further, the resist is developed, dried at the ambient temperature, and then the exposed thick film Cu conductor is etched. Eventually, unnecessary photoresist is removed, and a predetermined thick film Cu conductor pattern 4 is formed on the board 1.

6. 发明专利

JPH05314811A AG-PD CONDUCTOR PASTE 失效
公开(公告)号：JPH05314811A
公开(公告)日：1993-11-26
申请号：JP14623592
申请日：1992-05-13
申请人： NIHON CEMENT
发明人： KAWAMINAMI SHUICHI , EZAKI TORU , SHIBATA KIYOTO
IPC分类号： H01B1/16 , H05K1/09
摘要： PURPOSE:To provide an Ag-Pd conductor paste for forming a wiring pattern on the surface of a ceramic wiring substrate (particularly a low temperature baked ceramic substrate) for electronic circuit. CONSTITUTION:In a conductor paste including Ag, Pd, glass frit and an organic vehicle, an Ag-Pd coprecipitation powder is substituted for 10-50wt.% of the compounding amount of Ag and Pd, while 0.2-3wt.% of Cr2O3 and 0.1-2wt.% Mn oxide or Mn carbonate as calculated by converting into MnO, are compounded thereto, and a conductor paste is thus provided. The bonding strength is improved without impairing solder wettability by using this conductor paste at an early stage as well as after aging at high temperature, and the conductor resistance can also be reduced.

7. 发明专利

JPH1051044A LAMINATION TYPE PIEZOELECTRIC TRANSFORMER ELEMENT 失效
公开(公告)号：JPH1051044A
公开(公告)日：1998-02-20
申请号：JP20173796
申请日：1996-07-31
申请人： NIHON CEMENT
发明人： KATAOKA MASAKO , EZAKI TORU , YAMAKAWA TAKAHIRO , INOUE YOSHIKAZU
IPC分类号： H01L41/107 , H01L41/22
摘要： PROBLEM TO BE SOLVED: To improve conversion efficiency, by constituting each inner electrode of Ag-Pd mixture containing Pd of specified wt.%, which has a specified thickness. SOLUTION: Inner electrodes 6a and 6b which are alternately laminated in the input region 2 of a lamination type piezoelectric transformer element 1 are electrically connected every other electrode. In a piezoelectric transformer element having viaconductor in the element, the viaconductor is apt to absorb natural vibration of the piezoelectric transformer element, similarly to the inner electrodes, and deteriorates conversion efficiency. Each inner electrode is constituted of Ag-Pd mixture containing Pd of 20-80wt.%, and the thickness is made 1-5μm. Thereby the inner electrode is made hard to absorb the vibration, and Qm of the whole element is improved, so that the conversion efficiency of the element can be improved.

8. 发明专利

JPH06152135A MANUFACTURE OF CERAMIC MULTILAYER BOARD 失效
公开(公告)号：JPH06152135A
公开(公告)日：1994-05-31
申请号：JP32271892
申请日：1992-11-06
申请人： NIHON CEMENT
发明人： EZAKI TORU , YAMAKAWA TAKAHIRO , SUGANO OSAMU , TAKAHASHI SHIGERU
IPC分类号： B28B3/02 , B32B18/00 , H05K3/46
摘要： PURPOSE:To provide a means of manufacturing a ceramic multi-layer board, accompanied by no variation in baking contraction factors in the plane of the board, wherein no swelling or displacement present. CONSTITUTION:In the process in which multiple ceramics green sheets 1 are laminated together and pressed, at first, temporal bonding for positioning is done at the end part of the laminated green sheets 1, then banding agent is applied into among not-bonded green sheets 1, and under the temperature/ pressure condition that does not cause plastic deformation, pressing (7) is gradually done in a proceeding manner starting where already bonded, a ceramic multi-layer board thus manufactured.

9. 发明专利

JPH03286590A CERAMIC WIRING BOARD 失效
公开(公告)号：JPH03286590A
公开(公告)日：1991-12-17
申请号：JP8854490
申请日：1990-04-03
申请人： NIHON CEMENT
发明人： NAKAI KYOICHI , SAGAWA MASAAKI , EZAKI TORU , YAMAGISHI SENJO
IPC分类号： H05K1/02 , H01L23/36 , H05K1/00 , H05K1/03 , H05K3/46
摘要： PURPOSE:To discharge efficiently heat generated from a semiconductor device by installing densely a large number of through-holes filled with a conductive metal material to a mounting position of the semiconductor device or connecting these through-holes with a grounding conductor pattern or a radiation conductor pattern. CONSTITUTION:Surface wiring conductor patterns 4 are formed on both sides of a ceramic multilayer interconnection board 11 where a semiconductor device 6 is mounted at the same time. A large number of through-holes whose size is identical to that of signal transfer via holes 5, are densely installed at the position of the board where the semiconductor 6 is mounted, in order to dissipate heat generated from the semiconductor device 6. These through-holes are filled with conductive paste and one end of radiation through-holes 14 are arranged to come into contact with the semiconductor device 6 by way of a surface wiring good conductor suitable for heat conduction and conductive paste while the other end is connected with a grounding conductor pattern 12 installed in the board 11 at the same time. In addition, the radiation through holes 14 are connected with a single or plurality of conductor patterns exclusively designed for heat radiation installed on other layer on the way to the board 11.

10. 发明专利

JPH08333161A PRODUCTION OF PIEZOELECTRIC MATERIAL 失效
公开(公告)号：JPH08333161A
公开(公告)日：1996-12-17
申请号：JP16011995
申请日：1995-06-05
申请人： NIHON CEMENT
发明人： KATAOKA MASAKO , EZAKI TORU , YAMAKAWA TAKAHIRO , TAKAHASHI SHIGERU
IPC分类号： C04B35/00 , C04B35/49 , C04B35/495
摘要： PURPOSE: To provide a producing method of a piezoelectric material capable of lowering a sintering temperature without addition of a sintering auxiliary or an excess amount of Pb and capable of hardly occurring destruction in polarization. CONSTITUTION: In a production of a piezoelectric having a composition of ABO3 , the raw materials are mixed so as the elements of A site be A=mB in a molar ratio (0.95 =5m /g, then sintered.

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