公开(公告)号：JP2010080676A

公开(公告)日：2010-04-08

申请号：JP2008247333

申请日：2008-09-26

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI ,  NAGOYA MASAAKI ,  AZUMA YUSUKE

IPC: H01G4/12 ,  C04B35/46 ,  H01B3/12 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a laminated ceramic capacitor high in dielectric constant, with excellent temperature characteristic of electrostatic capacitance and high in life characteristic in a high temperature load test. SOLUTION: A dielectric ceramic constituting a dielectric layer 5 contains vanadium of 0.05-0.3 mol in terms of V 2 O 5 and one kind of rear earth element (RE) of 0.5-1.5 mol in terms of RE 2 O 3 selected from yttrium, dysprosium, holmium and erbium for barium of 100 mol constituting barium titanate. Crystal grains constituting the dielectric ceramic are constituted of crystal grains of calcium concentration of at least 0.2 atomic%. In an X-ray diffraction chart of the dielectric ceramic, the diffraction strength of a (004) plane exhibiting tetragonal barium titanate is larger than that of a (400) plane exhibiting cubic barium titanate. The Curie temperature is 100-120°C. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供高介电常数的叠层陶瓷电容器，具有优异的静电电容温度特性和高温负载测试时的寿命特性。 构成电介质层5的电介质陶瓷含有以V SB 2 O 5 / SB 5 = 0.05-0.3摩尔的钒和一种后土元素（RE ）为选自100摩尔构成钛酸钡的钡的钇，镝，钬和铒的RE O 3 为0.5-1.5摩尔。 构成电介质陶瓷的晶粒由钙浓度为至少0.2原子％的晶粒构成。 在电介质陶瓷的X射线衍射图中，显示四方钛酸钡的（004）面的衍射强度大于显示立方钛酸钡的（400）面的衍射强度。 居里温度为100-120°C。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008239402A

公开(公告)日：2008-10-09

申请号：JP2007082466

申请日：2007-03-27

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： OSUZU HIDEYUKI ,  YAMAZAKI YOICHI ,  FUJIOKA YOSHIHIRO ,  FUKUDA DAISUKE

IPC: C04B35/46 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30

CPC classification number: H01G4/1227 ,  C01G23/003 ,  C01G23/006 ,  C01P2002/52 ,  C01P2006/40 ,  C04B35/4682 ,  C04B35/6281 ,  C04B35/62815 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/36 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/79 ,  H01B3/12 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a dielectric ceramic having a high dielectric constant, excellent in stability of temperature characteristic of specific dielectric constant, and having a small voltage dependence of insulation resistance, and to provide stacked ceramic capacitor equipped with such dielectric ceramic as a dielectric layer, and excellent in life characteristic tested under high temperature load. SOLUTION: The dielectric ceramic has: crystalline particles with a core shell structure where barium titanate is a major component and calcium, vanadium, magnesium, manganese, and at least one kind of rare earth element selected from yttrium, dysprosium, holmium, erbium and terbium are solid solubilized; and an intergranular phase present between the crystal grains. By incorporating specific ratio of vanadium, magnesium and rare earth element and manganese to set Curie temperature in the range of 95-105°C, the dielectric ceramic having a high dielectric constant, a small temperature changing rate of the specific dielectric constant a small voltage dependency of the insulation resistance can be obtained. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供具有高介电常数，特定介电常数的温度特性的稳定性优异并且具有较小的绝缘电阻的电压依赖性的介电陶瓷，并且提供配备有这种电介质的叠层陶瓷电容器 陶瓷作为介电层，并且在高温负载下测试的寿命特性优异。 电介质陶瓷具有：以钛酸钡为主要成分的核壳结构的结晶粒子，钙，钒，镁，锰以及至少一种选自钇，镝，钬， 铒和铽是固体溶解的; 晶粒间存在晶间相。 通过结合钒，镁和稀土元素和锰的比例，将居里温度设定在95-105℃的范围内，介电陶瓷具有高介电常数，比介电常数的较小温度变化率小电压 可以获得绝缘电阻的依赖性。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008109019A

公开(公告)日：2008-05-08

申请号：JP2006292391

申请日：2006-10-27

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI ,  OSUZU HIDEYUKI ,  FUJIOKA YOSHIHIRO ,  FUKUDA DAISUKE

IPC: H01G4/12 ,  C04B35/46 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a multilayer ceramic capacitor employing a dielectric porcelain composed of BT crystal grains and BCT crystal grains as a dielectric layer in which deterioration incident to time variation in high temperature load test can be suppressed, and a high insulation multilayer ceramic capacitor can be obtained without providing a step for reoxidation processing in the fabrication process. SOLUTION: In a multilayer ceramic capacitor where a dielectric layer 5 composed of titanic acid barium crystal grains (BT crystal grains 9b) having Ca concentration of 0.2 atm.% or less and titanic acid barium calcium crystal grains (BCT crystal grains 9a) having Ca concentration of 0.4 atm.% or above, and an inner electrode layer 7 are laminated alternately, the BT crystal grains 9b and the BCT crystal grains 9a contain Mg, and rare earth element and vanadium and the content of Mg and rare earth element contained in the center of the BT crystal grains 9b is higher than the content of Mg and rare earth element contained in the center of the BCT crystal grains 9a. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种使用由BT晶粒和BCT晶粒组成的介电瓷的电介质层的多层陶瓷电容器，其中可以抑制高温负载试验中的时间变化引起的退化，并且高 绝缘多层陶瓷电容器可以在制造过程中不用提供再氧化处理的步骤。 解决方案：在具有Ca浓度为0.2atm％以下的钛酸钡晶粒（BT晶粒9b）和钛酸钡钙晶粒（BCT晶粒9a）构成的电介质层5的多层陶瓷电容器中， ），Ca浓度为0.4atm％以上，内电极层7交替层叠，BT晶粒9b和BCT晶粒9a含有Mg，稀土元素和钒，Mg和稀土的含量 包含在BT晶粒9b的中心的元素比包含在BCT晶粒9a的中心的Mg和稀土元素的含量高。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2006270010A

公开(公告)日：2006-10-05

申请号：JP2005138683

申请日：2005-05-11

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI

IPC: H01G4/12 ,  H01G2/24 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a chip type electronic component which has a high visibility irrespective of a small size and a high mechanical strength, wherein a breakage of an external electrode can be prevented and a ceramic main body can be enlarged.
SOLUTION: This chip type electronic component comprises a projected curved face 29 in at least one face of a ceramic main body 21. In the good chip type electronic component, a face in a lamination direction is curved in a projected shape, and the side face of the ceramic main body which is vertical to the projected main face and in which a conductor is not exposed is curved in a recessed shape. Only one face thereof may comprise a projected curved face. Further, the chip type electronic component comprises the ceramic main body formed by laminating an insulating layer and a conductor layer alternately, and a pair of external electrodes. A thickness in the lamination direction at a center part between the ceramic main body and the external electrode is made larger than a thickness of an end face side.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提供具有高可见度的芯片型电子部件，而不管小尺寸和高机械强度，其中可以防止外部电极的断裂并且可以扩大陶瓷主体。 解决方案：该芯片型电子部件包括在陶瓷主体21的至少一个面中的突出的弯曲面29.在良好的芯片型电子部件中，层叠方向的面呈弯曲的突出形状， 陶瓷主体的垂直于突出的主面并且导体未暴露的侧面弯曲成凹陷的形状。 只有其一个面可以包括投影的曲面。 此外，芯片型电子部件包括通过交替层叠绝缘层和导体层而形成的陶瓷主体和一对外部电极。 使陶瓷主体和外部电极之间的中心部分的层叠方向的厚度大于端面侧的厚度。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2006176388A

公开(公告)日：2006-07-06

申请号：JP2005202703

申请日：2005-07-12

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： SHINGU YUJI ,  YAMAZAKI YOICHI ,  KAMIGAKI YASUYO

IPC: C04B35/46 ,  H01G4/12

Abstract: PROBLEM TO BE SOLVED: To provide a dielectric ceramic which can be applied to a very thin dielectric layer and has high specific dielectric constant and stable temperature characteristics, and a method of manufacturing the same. SOLUTION: In the dielectric ceramic constituted so that crystal grains 1 constituted essentially of barium titanate are bonded across a grain boundary phase 3 formed by an auxiliary component containing silicon, (a) the average particle diameter of the crystal grains 1 is ≤0.2 μm and (b) the content of SiO 2 is 0.1 pt.mass per 100 pts.mass BaTiO 3 when silicon is expressed in terms of SiO 2 and barium titanate is expressed by BaTiO 3 . COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供可以应用于非常薄的电介质层并具有高比介电常数和稳定的温度特性的电介质陶瓷及其制造方法。 解决方案：在电介质陶瓷中，构成为使由主要由钛酸钡构成的晶粒1在由包含硅的辅助成分形成的晶界相3上接合，（a）晶粒1的平均粒径≤ 0.2μm时，和（b）当硅以SiO 2表示时，SiO 2 的含量为0.1pt.mass / 100pts.mass BaTiO 3 / SB>，钛酸钡由BaTiO 3 SBB表示。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004186344A

公开(公告)日：2004-07-02

申请号：JP2002350515

申请日：2002-12-02

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI ,  SUENAGA YUJI

IPC: H01G4/12 ,  H01G4/30 ,  H01L41/083 ,  H01L41/107 ,  H05K3/46

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a ceramic laminate that can significantly suppress the occurrence of delamination or any crack on the side surface on its side-margin side.
SOLUTION: In the mother laminate 9 of the ceramic laminate, an end-side shape holding conductor pattern 5 is formed between the facing end margin-side edges 3a of adjacent functional conductor patterns 3 with prescribed intervals from the edges 3a between ceramic green sheets 1. In addition, nearly parallel two side-side shape holding conductor patterns 7 having an interval wider than cut widths are formed between the margin-side edges 3b of the patterns 3. The mother laminate 9 is cut into laminated formed bodies 41 along a line drawn between the two side shape holding conductor patterns 7, so that the end-side shape holding conductor pattern 5 can be divided into two parts and the ends of the conductor patterns 7 may not be exposed on the end faces of laminated formed bodies 41.
COPYRIGHT: (C)2004,JPO&NCIPI

公开(公告)号：JP2013182908A

公开(公告)日：2013-09-12

申请号：JP2012043664

申请日：2012-02-29

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI

IPC: H01G4/20 ,  H01G4/18

Abstract: PROBLEM TO BE SOLVED: To provide a capacitor the capacitance of which can be raised.SOLUTION: In a capacitor including a dielectric film 1, and an electrode layer 3 formed on both sides of the dielectric film 1, the dielectric film 1 contains, in a resin 5, 30-70 vol% of inorganic particles 7 having an average grain size of 30-40 nm and a dielectric constant higher than that of the resin 5, and has a three-dimensional matrix structure where the inorganic particles 7 are bonded via necks 7a. Consequently, the dielectric constant of the dielectric film is enhanced, and a capacitor of high capacitance can be obtained.

Abstract translation: 要解决的问题：提供一种其电容可以提高的电容器。解决方案：在包括电介质膜1的电容器和形成在电介质膜1两侧的电极层3之间，电介质膜1包含 树脂5,30-70体积％的平均粒径为30〜40nm，介电常数高于树脂5的无机粒子7，并且具有无机粒子7的三维矩阵结构 通过颈部7a。 因此，提高了电介质膜的介电常数，可以获得高容量的电容器。

公开(公告)号：JP2010006633A

公开(公告)日：2010-01-14

申请号：JP2008167420

申请日：2008-06-26

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： NAGOYA MASAAKI ,  YAMAZAKI YOICHI ,  AZUMA YUSUKE

IPC: C04B35/46 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30

CPC classification number: H01G4/1227 ,  C04B35/4682 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/36 ,  C04B2235/5445 ,  C04B2235/652 ,  C04B2235/765 ,  C04B2235/785 ,  C04B2235/85 ,  H01B3/12 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a dielectric ceramic having a high dielectric constant and excellent temperature characteristics of relative dielectric constant and to provide a multilayered ceramic capacitor using the dielectric ceramic. SOLUTION: The dielectric ceramic includes 0.05-0.3 mol of vanadium in terms of V 2 O 5 in 100 mol of barium constituting barium titanate, and 0.5-1.5 mol in terms of RE 2 O 3 of one kind of rare earth element (RE) selected from among yttrium, dysprosium, holmium, erbium and terbium. In an X-ray diffraction chart, a diffraction strength of (004) face representing tetragonal barium titanate is larger than that of (400) face representing cubic barium titanate and also the Curie temperature is 100-120°C. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供具有高介电常数和优异的相对介电常数温度特性的介电陶瓷，并提供使用电介质陶瓷的多层陶瓷电容器。

解决方案：在100摩尔构成钛酸钡的钡中，电介质陶瓷包括0.05-3.3摩尔的钒，以V SB 2 O 3 / SB> 5 ，和0.5-1.5摩尔 在选自钇，镝，钬，铒和铽中的一种稀土元素（RE）的RE 2 3 3 。 在X射线衍射图中，表示四方钛酸钡的（004）面的衍射强度大于表示立方钛酸钡的（400）面的衍射强度，居里温度为100〜120℃。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009286648A

公开(公告)日：2009-12-10

申请号：JP2008139329

申请日：2008-05-28

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： AZUMA YUSUKE ,  YAMAZAKI YOICHI ,  NAGOYA MASAAKI

IPC: C04B35/46 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30

CPC classification number: H01B3/12 ,  C04B35/4682 ,  C04B2235/3206 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3262 ,  C04B2235/36 ,  C04B2235/5445 ,  C04B2235/6025 ,  C04B2235/652 ,  C04B2235/656 ,  C04B2235/765 ,  C04B2235/785 ,  C04B2235/85 ,  H01G4/1227 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a dielectric porcelain which has high permittivity, a low dielectric loss, and a change in relative permittivity by temperature satisfying the X7R properties of ELA Standards, and provides high insulation resistance even when low voltage is applied, and to provide a multilayer ceramic capacitor provided with the dielectric porcelain as a dielectric layer and having excellent service life properties in a high temperature load test. SOLUTION: The dielectric porcelain contains barium titanate as a main component and contains prescribed amounts of vanadium, magnesium, manganese and rare earth elements, wherein the diffraction intensity of the (004) plane showing the barium titanate in a tetragonal system is higher than the diffraction intensity of the (004) plane showing the barium titanate in a cubic system, and the average particle diameter of crystal particles is 0.21 to 0.28 μm. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供具有高介电常数，低介电损耗和满足ELA标准的X7R性质的温度的相对介电常数的介电瓷，并且即使在施加低电压时也提供高绝缘电阻 并且提供一种设置有电介质陶瓷作为电介质层的多层陶瓷电容器，并且在高温负载试验中具有优异的使用寿命特性。 解决方案：电介质陶瓷含有钛酸钡作为主要成分，并含有规定量的钒，镁，锰和稀土元素，其中在四方晶系中显示钛酸钡的（004）面的衍射强度较高 除了以立方体系显示钛酸钡的（004）面的衍射强度以外，结晶粒子的平均粒径为0.21〜0.28μm。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008109120A

公开(公告)日：2008-05-08

申请号：JP2007251563

申请日：2007-09-27

Applicant: Kyocera Corp ,  京セラ株式会社

Inventor： YAMAZAKI YOICHI

IPC: H01G4/12 ,  C04B35/46 ,  C04B35/628 ,  H01G4/30

Abstract: PROBLEM TO BE SOLVED: To provide a multilayer ceramic capacitor exhibiting a high permittivity even if the mean particle diameter of crystal grains is made smaller than 0.5 μm in which high temperature loading lifetime can be enhanced while reducing the temperature variation rate of dielectric constant. SOLUTION: A dielectric layer 5 contains 0.5-2 mol parts of Mg in terms of MgO, and 0.2-0.5 mol parts of Mn in terms of MnO for 100 mol parts of titanic acid barium, one kind of first rare earth element selected from Ho, Y, Er, Tm, Yb and Lu, and one kind of second rare earth element selected from Sm, Eu, Gd, Tb and Dy wherein the mean particle diameter of crystal grains composing the dielectric layer 5 is 0.15-0.3 μm, concentration gradient from the grain boundary to the central portion of crystal particles of the first rare earth element is in the range from -0.005 to -0.05 atm%/nm, and concentration gradient from the grain boundary to the central portion of crystal particles of the second rare earth element is in the range from -0.0005 to -0.005 atm%/nm. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：即使使晶粒的平均粒径小于0.5μm，提高高电容率的多层陶瓷电容器，其中可以提高高温负载寿命，同时降低电介质的温度变化率 不变。 解决方案：电介质层5以MgO计含有0.5-2摩尔的Mg，对于100摩尔的钛酸钡，MnO为0.2-0.5摩尔的Mn，一种第一稀土元素 选自Ho，Y，Er，Tm，Yb和Lu，以及选自Sm，Eu，Gd，Tb和Dy的一种第二稀土元素，其中构成电介质层5的晶粒的平均粒径为0.15-0.3 从第一稀土元素的晶界到晶体中心部分的浓度梯度在-0.005〜-0.05atm％/ nm的范围内，从晶界到晶粒的中心部分的浓度梯度 的第二稀土元素在-0.0005至-0.005atm％/ nm的范围内。 版权所有（C）2008，JPO＆INPIT