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公开(公告)号：JP2002164759A
公开(公告)日：2002-06-07
申请号：JP2000356916
申请日：2000-11-24
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU , ISHIHARA HIROMASA
Abstract: PROBLEM TO BE SOLVED: To provide a method for adjusting the oscillation frequencies of a tuning fork oscillator while removing a part of a metallic film formed on the oscillating piece surface by laser irradiation, capable of shortening the frequency adjusting work time, and improving the production efficiency of the oscillator. SOLUTION: A difference between the oscillation frequencies of a tuning fork oscillator and preliminarily set target frequencies is calculated by a calculating means 68a. Then, a laser irradiator 65 is controlled by a laser control means 68b so that the removal quantity of a metallic film for changing the oscillation frequencies of the tuning fork oscillation only by the difference with the target frequencies can be obtained, and removal dots are formed. The oscillation frequencies of the tuning fork oscillator after the laser irradiation are measured by a measuring means 68c.
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公开(公告)号：JP2000301447A
公开(公告)日：2000-10-31
申请号：JP11146399
申请日：1999-04-19
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To suppress dispersion of chamfering, generation of a crack, or the like by cutting off the ridge part of a quartz oscillating plate of circular shape or rectangular shape by a laser beam. SOLUTION: A quartz oscillating plate 1 is pinchedly held with a chuck holder, a laser beam is continuously obliquely irradiated to the ridge part 10, and the laser beam is relatively moved to chamfer the plate. Recently, for example, a laser beam of wavelength suitable for cutting quartz is developed, it is partially put to practical use, and the cut-off face by a laser beam can be finished into a comparatively good condition. The many quartz oscillating plates and abrasive are charged into a barrel, and the barrel is rotated for a fixed time for polishing. For the abrasive used at this time, for example, abrasive of mesh of about No.600 is used. Because the polishing time is fundamentally for regulating the surface condition of a chamfering territory, the working time is enough to be short to the extent of polishing for about 5-6 hours.
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公开(公告)号：JP2000195977A
公开(公告)日：2000-07-14
申请号：JP37027498
申请日：1998-12-25
Applicant: DAISHINKU CORP
Inventor： NAKADA HOZUMI , NAKAJIMA MIKIO , IIZUKA MINORU
IPC: H01L23/02
Abstract: PROBLEM TO BE SOLVED: To provide a package for an electronic component and a manufacture thereof, wherein the reliability in airtighness is maintained satisfactorily and the functions of the electronic component will not deteriorate even is sulyicted to miniaturization. SOLUTION: There are provided a ceramic package 1, having a concave part of which upper part opens, a quartz oscillating board 3 which is an electronic element housed in the package, and a metal lid 2 bonded to the opening of the package. The ceramic package and the metal lid are bonded by first spot resistance welding or laser welding and then by soldering the entire surface.
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公开(公告)号：JP2000049562A
公开(公告)日：2000-02-18
申请号：JP22865998
申请日：1998-07-28
Applicant: SUMITOMO KINZOKU ELECTRO , DAISHINKU CORP
Inventor： MOMOZAKI AKIHARU , IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a piezoelectric vibrator which improves impact resistance and electrical characteristics. SOLUTION: In this piezoelectric vibrator 10 in which a pair of connecting electrodes 12 and 13 are attached to the surface of a ceramic substrate 11 and a piezoelectric diaphragm 19 is connected to the electrodes 12 and 13 through supports 17 and 18 and is supported by supports 17 and 18, a support supporting plane which is formed on the top surface of each electrode 12 and 13 consists of plural small independent divided support supporting planes 16, 16a and 16b that are small in area and the base parts of the supports 17 and 18 are supported by the planes 16, 16a and 16b with planes in contact with each other.
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公开(公告)号：JPH11307661A
公开(公告)日：1999-11-05
申请号：JP13140298
申请日：1998-04-23
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide an electronic component package and a manufacturing method thereof, wherein a ceramic package and a lid can be jointed together and positioned at a prescribed position without using a positioning jig, even if an electronic part is subminiaturized, and the package can be hermetically sealed up. SOLUTION: An electronic component package is consists of a recessed ceramic package 1 whose upper part is open, a quartz vibrator 3 housed in the package 1 to serve as an electronic device, and a metal lid 2 jointed to the opening of the package 1. The lid 2 is composed of a metal mother material 20 of Kovar(R) or the like and a peripheral solder layer 21 formed on the underside of the mother material 20, corresponding to a peripheral metal layer 11 provided in the peripheral edge of the opening of the package 1. When a hermetic sealing operation is carried out, the lid 2 is laid on the ceramic package 1, making its solder layer 21 overlap with the metal layer 11 provided in the ceramic package 1, and the solder 21 is heated and melted by setting a surrounding temperature at the solder melting point of the solder.
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Patent Agency Ranking
公开(公告)号：JPH11111876A
公开(公告)日：1999-04-23
申请号：JP28787697
申请日：1997-10-03
Applicant: DAISHINKU CORP
Inventor： NAKAJIMA MIKIO , IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To improve an yield at the time of air-tight sealing, and to improve reliability on an air-tight surface in a package for an electronic component for performing air-tight sealing by electron beam welding or laser beam welding. SOLUTION: A package is composed of a ceramic package 1 of a recessed shape whose upper part is opened, a crystal vibrating plate 3 which is an electronic component element housed in the ceramic package 1 and a metallic lid 2 joined to the opening part of the ceramic package 1 and the ceramic package 1 of the recessed shape is composed of a ceramic base body 10, a metallization layer 11 composed of tungsten or the like formed at the opening part around the recessed shape and a plating layer formed at the upper part of the metallization layer. The upper surface of the metallization layer 11 is flattened so as to turn a flat degree (t) to be less than 5 μm.
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公开(公告)号：JPH1051265A
公开(公告)日：1998-02-20
申请号：JP22063196
申请日：1996-08-02
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To eliminate a defective product such as a coming-off of a sealing cover by improving an adhesive strength between a sealing cover and a base plate. SOLUTION: In a surface-mount crystal vibrator where a base 1A having crystal plate mount parts 21A, 22A and a lead electrode to lead out of the crystal mount parts 21A, 22A is provided and a crystal plate 5A whose electrodes are formed is adhered to the crystal plate mount parts 21A, 22A by a conductive adhesives and a sealing cover 6A is fitted to an upper part of the base 1A by a sealing material, so as to form a rough face, a groove, a projection or a recessed part to at least one of contact pasts between the sealing cover 6A and the base 1A.
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公开(公告)号：JPH09199972A
公开(公告)日：1997-07-31
申请号：JP3002096
申请日：1996-01-23
Applicant: DAISHINKU CORP
Inventor： NAKADA HOZUMI , NAKAJIMA MIKIO , IIZUKA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a surface mount piezoelectric vibrator with higher reliability in which adhesion between an insulation board and a piezoelectric plate is improved. SOLUTION: An area (electrode forming part) coupled electromechanically and an area (non-electrode part such as notch and cut-out) coupled mechanically with piezoelectric plate connection electrodes 3A, 4A of an insulation board and insulation board connection electrodes 52A, 53A of a piezoelectric board are formed, and the electrode forming part and the non-electrode part are adhered by a conductive adhesion material.
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公开(公告)号：JPH0878998A
公开(公告)日：1996-03-22
申请号：JP24186494
申请日：1994-09-08
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU
Abstract: PURPOSE: To obtain the supporting structure for a piezoelectric vibrator which is excellent in impact resistance by having a support constitution that the stress of the impact due to a drop, etc., is difficult to adversely affect a piezoelectric diaphragm, etc., when the impact is added to the piezoelectric vibrator. CONSTITUTION: The support members 3 and 4 installed on a base 2 extends base joining parts 31 and 41, rise base parts 32 and 42 extending in the direction isolating from these parts with each other and first elastic parts 33 and 43 in the oblique upper part in the direction approaching from these base parts 32 and 42 with each other. In the oblique upper part isolating from these elastic parts 33 and 34 with each other, second elastic parts 34 and 44 are extended, the mounting parts 35 and 45 of a piezoelectric diaphragm 1 constituting from these elastic parts 34 and 44 are formed, and the diaphram 1 and the mounting part are joined with conductive joining member. The spring constants of the elastic parts 33, 43 and 34, 44 are defined as A, C and B, D, respecively, and the relation of A
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公开(公告)号：JPH02179681A
公开(公告)日：1990-07-12
申请号：JP33418488
申请日：1988-12-29
Applicant: DAISHINKU CORP
Inventor： IIZUKA MINORU , TOGO HIDEHIKO , MIKI YASUSHI
Abstract: PURPOSE:To immediately display a moving picture of TV broadcast or the like by writing information corresponding to one frame of a display medium in a RAM in a write cycle and immediately reading out information in the order adapted to the characteristic of the display medium in the next read cycle to drive display elements of the display medium. CONSTITUTION:With respect to an electrostatic display device 13, many display units each of which is provided with two fixed electrodes and a mobile electrode attracted by the electrostatic force of one of these fixed electrodes are arranged in a matrix to constitute one panel. A RAM 9 is provided with the storage capacity larger than the number of constituted display units of the device 13 and has the same number of rows and columns as the matrix of the device 13. A picture signal of one frame is written in two periods of a vertical synchronizing signal in the order according with horizontal-direction interlaced scanning in the same manner as TV scanning at the time of write and is successively read out with a column as the unit in the read cycle. Thus, a moving picture is immediately displayed.
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