公开(公告)号：DE69408565T2

公开(公告)日：1998-08-06

申请号：DE69408565

申请日：1994-11-25

Applicant: NGK INSULATORS LTD

Inventor： TAKEUCHI YUKIHISA ,  KIMURA KOJI ,  KURASHINA MITSURU

IPC: B41J2/045 ,  B06B1/06 ,  B41J2/055 ,  G01N11/00 ,  G01N11/16 ,  H01L29/84 ,  H01L41/08 ,  H01L41/09

Abstract: A piezoelectric device includes a ceramic substrate (5) having at least one cavity (5b) defined by a thin-walled region (5a) of the substrate. The thin-walled region has an outer surface provided with at least one piezoelectric transducer (2,3) and also with a non-operative (4) portion situated adjacent to the piezoelectric transducer such that each piezoelectric transducer surrounds the non-operative portion, or two piezoelectric transducers are arranged on both sides of the non-operative portion.

公开(公告)号：DE69408565D1

公开(公告)日：1998-03-26

申请号：DE69408565

申请日：1994-11-25

Applicant: NGK INSULATORS LTD

Inventor： TAKEUCHI YUKIHISA ,  KIMURA KOJI ,  KURASHINA MITSURU

IPC: B41J2/045 ,  B06B1/06 ,  B41J2/055 ,  G01N11/00 ,  G01N11/16 ,  H01L29/84 ,  H01L41/08 ,  H01L41/09

Abstract: A piezoelectric device includes a ceramic substrate (5) having at least one cavity (5b) defined by a thin-walled region (5a) of the substrate. The thin-walled region has an outer surface provided with at least one piezoelectric transducer (2,3) and also with a non-operative (4) portion situated adjacent to the piezoelectric transducer such that each piezoelectric transducer surrounds the non-operative portion, or two piezoelectric transducers are arranged on both sides of the non-operative portion.

公开(公告)号：HU0201031A2

公开(公告)日：2002-10-28

申请号：HU0201031

申请日：2002-03-20

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU ,  NIIMI NORIKAU ,  YAMAGUCHI HIROFUMI

IPC: B28B1/26 ,  C04B35/00 ,  C04B35/115 ,  C04B35/632 ,  H01J61/30 ,  C04B33/00

Abstract: A ceramic polycrystal and a method of manufacturing such a ceramic polycrystal having thermal stability enough to be used in an arc tube are provided. The ceramic polycrystal has crystalline particles. Each of crystalline particles has a crystalline structure selected from triclinc, monoclinic, rhombi, tetragonal, trigonal, and hexagonal systems, with an average grain size being not less than 5 mu m and a linear transmittance being not less than 8%.

公开(公告)号：CZ20011143A3

公开(公告)日：2001-12-12

申请号：CZ20011143

申请日：2001-03-28

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU ,  ASAI MICHIO

IPC: C04B35/115 ,  H01J61/30 ,  H01J5/48

Abstract: An arc tube is formed by polycrystalline alumina so that an average crystal grain diameter of a surface is two to ten times as large as an average crystal grain diameter of an inside including a center line of a thickness and the average crystal grain diameter on the center portion of the thickness is 10 mum to 100 mum. As a result, in the arc tube, the total transmittance is 98%, and a linear ray transmittance is 5%.

公开(公告)号：JPH04296044A

公开(公告)日：1992-10-20

申请号：JP6033691

申请日：1991-03-25

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU

IPC: H01L23/02

Abstract: PURPOSE:To offer a flat package of a structure wherein the area of a protective cap with a wiring board and that with a protective cap are increased, whereby when the flat package is sealed and covered with the above cap, a sufficient sealing adhesion is given to the package and the structural strength of the package can be obtained. CONSTITUTION:An insulating coat 14 is made to extendedly provide up to reach the edge parts of a wiring board 12 between the board 12 and a protective cap 16. As a result, the area of contact of the coat 14 with the wiring board 12 and that with the cap 16 are increased. Thereby, when a flat package is sealed and covered with the cap 16, a sufficient sealing adhesion is given to the package.

公开(公告)号：JP2002184353A

公开(公告)日：2002-06-28

申请号：JP2001156066

申请日：2001-05-24

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU ,  ASAI MICHIO

IPC: H01J9/24 ,  H01J61/30

Abstract: PROBLEM TO BE SOLVED: To provide a polycrystalline ceramics light-emitting tube for high luminance discharge lamp that is provided with a necessary property at the capillary part without going through a complicated process and without deteriorating the property at the body part, and its manufacturing method. SOLUTION: The water absorption ratio of the formed product is controlled at 20-30 wt.% in the first temporary firing process (S5), and the frit-deposition part of the capillary top end is steeped (S6) in the water solution of magnesium nitric acid of 0.06-0.9 mol/l and fired in the second temporary firing process (S7), and then it is fired (S8) in the hydrogen atmosphere at 1,750-1,900 deg.C, and the average particle size at the frit sealing portion is made smaller than the average particle size of the other portion.

公开(公告)号：JP2002184352A

公开(公告)日：2002-06-28

申请号：JP2001156061

申请日：2001-05-24

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU ,  ASAI MICHIO

IPC: C04B35/115 ,  H01J9/24 ,  H01J61/30

Abstract: PROBLEM TO BE SOLVED: To improve reliability for use for a long period by providing a necessary property to the capillary part without deteriorating the property of the body part. SOLUTION: After alumina powder is mixed, kneaded and formed, the water absorption ratio of the formed product is controlled between 15-30% wt.% at the first temporary firing process (S5), and the frit-adhered part of the capillary top end is steeped (S6) in the water solution of magnesium nitric acid of 0.06-0.9 mol/l and temporarily fired in the second temporary firing process (S7), and then it is fired (S8) in the hydrogen atmosphere at 1750-1900 deg.C and the average particle size at the frit sealing portion is made smaller as 20%-90% of the average particle size of the body part.

公开(公告)号：JPH0311793A

公开(公告)日：1991-01-21

申请号：JP14795589

申请日：1989-06-09

Applicant: NGK INSULATORS LTD

Inventor： KURASHINA MITSURU

IPC: H05K3/46

Abstract: PURPOSE:To eliminate the shrinkage of a green sheet and a previously printed layer so as to avoid the deviation of printing and lamination by a method wherein pressure is applied after the printing process of a conductor pattern and an insulating layer and the following drying process when these processes are repeated. CONSTITUTION:A printed layer 5-1 composed of a conductor patter 2, an insulating pattern 3, and a through-hole 4 is formed on a ceramic green sheet 1, and the layer 5-1 and the green sheet 1 are pressed by a press 6 at a pressure of 5-150kg/cm for 60 seconds or so keeping them at a temperature of 150 deg.C or below. Then, a printed layer 5-2 is laid on the layer 5-1 subjected to a press treatment, which is pressed again. These processes are repeated so as to form a multilayer printed substrate provided with a multilayer interconnection layer, whereby a multilayer printed substrate 8 provided with a multilayer printed sheet 7 free of printing deviation of the through-holes 4 among the printed layers can be obtained, and the surfaces of the printed layers become flat and bores and pinholes are lessened in occurrence rate at the printing of insulating layers.

公开(公告)号：JP2004259447A

公开(公告)日：2004-09-16

申请号：JP2001009547

申请日：2001-01-17

Applicant: Ngk Insulators Ltd ,  日本碍子株式会社

Inventor： KURASHINA MITSURU ,  ASAI MICHIO

IPC: C04B35/10 ,  H01J61/30

Abstract: PROBLEM TO BE SOLVED: To provide an alumina material with good light transmittance and linear light transmittance without requiring any mechanical or chemical polishing process. SOLUTION: The light-emitting tube made of polycrystalline alumina having a total light transmittance of 98% and a linear light transmittance of 5% is obtained by making an average crystal grain diameter constructing the surface part of the tube 2 to 10 times that of the inner part of the tube including a thick central line and making an average crystal grain diameter at a thick center part at 10 μm to 100 μm. COPYRIGHT: (C)2004,JPO&NCIPI

Abstract translation: 要解决的问题：提供具有良好的透光率和线性透光率的氧化铝材料，而不需要任何机械或化学抛光工艺。 解决方案：通过使构成管的表面部分的平均晶粒直径为10〜10倍，得到总透光率为98％，线光透射率为5％的多晶氧化铝制的发光管 管的内部部分包括厚的中心线，并使得中心部分的平均晶粒直径在10μm至100μm。 版权所有（C）2004，JPO＆NCIPI

公开(公告)号：JP2004140397A

公开(公告)日：2004-05-13

申请号：JP2003420036

申请日：2003-12-17

Applicant: Ngk Insulators Ltd ,  日本碍子株式会社

Inventor： TAKEUCHI YUKIHISA ,  KIMURA KOJI ,  KURASHINA MITSURU

IPC: H01L41/09 ,  H01L41/187

CPC classification number: B41J2002/1425

Abstract: PROBLEM TO BE SOLVED: To realize a stable piezoelectric/electrostrictive film element in which the displacement, the force, or the like to the direction opposite to a cavity can be stably obtained, and the displacement and an increment in the volume of the cavity generated are almost unchanged even when the formed position of the piezoelectric/electrostrictive operating part is misaligned.
SOLUTION: The piezoelectric/electrostrictive film element comprises a lower-electrode-film non-forming region on the outer surface of a thin-walled portion (5a) on the cavity (5b) formed in a ceramic substrate (5), a lower electrode film formed in a specified area that surrounds the lower-electrode-film non-forming region, and a piezoelectric/electrostrictive film and an upper electrode film sequentially stacked on the lower piezoelectric/electrostrictive film, wherein all the circumference of the lower-electrode-film non-forming region is surrounded by the lower electrode film.
COPYRIGHT: (C)2004,JPO