公开(公告)号：US06995968B2

公开(公告)日：2006-02-07

申请号：US10951941

申请日：2004-09-29

申请人： Kazushige Ito ,  Shunichi Yuri ,  Yukie Nakano ,  Mari Miyauchi ,  Takako Hibi ,  Daisuke Iwanaga ,  Masakazu Hosono

发明人： Kazushige Ito ,  Shunichi Yuri ,  Yukie Nakano ,  Mari Miyauchi ,  Takako Hibi ,  Daisuke Iwanaga ,  Masakazu Hosono

IPC分类号： H01G4/06

CPC分类号： H01G4/1227 ,  C04B35/468 ,  H01G4/30

摘要： In order to provide dielectric ceramic composition having low IR defect rate and high relative dielectric constant even when the multilayer ceramic capacitor is made thinner, dielectric ceramic composition including a main component expressed by a composition formula {{Ba(1-x)Cax}O}A{Ti(1-y-z)ZryMgz}BO2 and subcomponents of Mn oxide, Y oxide, V oxide and Si oxide is provided. In the above formula, A, B, x, y and z are as follows: 0.995≦A/B≦1.020, 0.0001≦x≦0.07, preferably 0.001≦x

摘要翻译： 为了提供具有低IR缺陷率和高相对介电常数的介电陶瓷组合物，即使当多层陶瓷电容器制得更薄时，包括由组成式{{Ba（1-x） （1-yz）Zr y>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 提供了Mn氧化物，Y氧化物，V氧化物和Si氧化物的次要成分。 在上式中，A，B，x，y和z如下：0.995 <= A / B <= 1.020,0.0001 <= x <= 0.07，优选0.001 <= x <0.05,0.1 <= y < 0.3和0.0005 <= z <= 0.01，优选0.003 <= z <= 0.01。

公开(公告)号：US06493207B2

公开(公告)日：2002-12-10

申请号：US09887927

申请日：2001-06-26

申请人： Yukie Nakano ,  Takako Hibi ,  Mari Miyauchi ,  Daisuke Iwanaga

发明人： Yukie Nakano ,  Takako Hibi ,  Mari Miyauchi ,  Daisuke Iwanaga

IPC分类号： H01G4228

CPC分类号： H01G4/0085 ,  H01G4/30

摘要： The invention provides a multilayer ceramic capacitor capable of preventing the occurrence of cracks by inhibiting the multilayer capacitor from expanding in a stacking direction and a width direction. The multilayer ceramic capacitor includes a capacitor element (10) in which dielectric layers (11a and 11b) and internal electrodes (12) are alternately stacked. The capacitor element (10) is obtained by stacking and firing a dielectric paste layer and an internal electrode paste layer. An expansion coefficient x in the stacking direction lies between −0.05i% and 0.05i% inclusive, where i denotes the number of dielectric layers (11a), preferably the expansion coefficient x is 0% or less, or more preferably the expansion coefficient x lies between −10% and 0% inclusive. Preferably, an expansion coefficient y in the width direction lies between −0.05i% and 0% inclusive. The expansion coefficients x and y can be controlled by adding a carbon material or a lithium-containing compound to the internal electrode paste layer, or by reducing a thickness of the dielectric layer (11b) located in an outermost portion. Thus, the occurrence of cracks is inhibited, and therefore a fraction defective is reduced.

摘要翻译： 本发明提供一种能够通过抑制层叠电容器在堆叠方向和宽度方向上扩展来防止发生裂纹的多层陶瓷电容器。 多层陶瓷电容器包括其中电介质层（11a和11b）和内部电极（12）交替堆叠的电容器元件（10）。 电容器元件（10）通过堆叠和烧结电介质浆料层和内部电极浆料层而获得。 叠层方向的膨胀系数x在-0.05i％〜0.05i％的范围内，其中i表示介电层数（11a），优选膨胀系数x为0％以下，更优选膨胀系数x 在-10％至0％之间。 优选地，宽度方向上的膨胀系数y在-0.05％和0％之间。 膨胀系数x和y可以通过向内部电极浆料层中添加碳材料或含锂化合物，或通过减小位于最外部的电介质层（11b）的厚度来控制。 因此，可以抑制裂缝的发生，因此能够降低部分缺陷。

公开(公告)号：US20050111163A1

公开(公告)日：2005-05-26

申请号：US10951941

申请日：2004-09-29

申请人： Kazushige Ito ,  Shunichi Yuri ,  Yukie Nakano ,  Mari Miyauchi ,  Takako Hibi ,  Daisuke Iwanaga ,  Masakazu Hosono

发明人： Kazushige Ito ,  Shunichi Yuri ,  Yukie Nakano ,  Mari Miyauchi ,  Takako Hibi ,  Daisuke Iwanaga ,  Masakazu Hosono

IPC分类号： B32B18/00 ,  C04B35/46 ,  C04B35/468 ,  H01B3/12 ,  H01G4/12 ,  H01G4/30 ,  H01G4/06

CPC分类号： H01G4/1227 ,  C04B35/468 ,  H01G4/30

摘要： In order to provide dielectric ceramic composition having low IR defect rate and high relative dielectric constant even when the multilayer ceramic capacitor is made thinner, dielectric ceramic composition including a main component expressed by a composition formula {{Ba(1-x)Cax}O}A{Ti(1-y-z)ZryMgz}BO2 and subcomponents of Mn oxide, Y oxide, V oxide and Si oxide is provided. In the above formula, A, B, x , y and z are as follows: 0.995≦A/B≦1.020, 0.0001≦x≦0.07, preferably 0.001≦x≦0.05, 0.1≦y≦0.3 and 0.0005≦z≦0.0 1, preferably 0.003≦z≦0.0 1.

摘要翻译： 为了提供具有低IR缺陷率和高相对介电常数的介电陶瓷组合物，即使当多层陶瓷电容器制得更薄时，包括由组成式{{Ba（1-x） （1-yz）Zr y>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 提供了Mn氧化物，Y氧化物，V氧化物和Si氧化物的次要成分。 在上式中，A，B，x，y和z如下：0.995 <= A / B <= 1.020,0.0001 <= x <= 0.07，优选0.001 <= x <= 0.05,0.1 < = 0.3和0.0005 <= z <= 0.0 1，优选0.003 <= z <= 0.0 1。

公开(公告)号：US06785121B2

公开(公告)日：2004-08-31

申请号：US09865575

申请日：2001-05-29

申请人： Yukie Nakano ,  Shunichi Yuri ,  Mari Miyauchi ,  Daisuke Iwanaga

发明人： Yukie Nakano ,  Shunichi Yuri ,  Mari Miyauchi ,  Daisuke Iwanaga

IPC分类号： H01G406

CPC分类号： H01G4/12 ,  H01G4/232 ,  H01G4/30 ,  Y10T29/417

摘要： A multilayer ceramic capacitor having internal electrode layers and dielectric layers with dielectric particles is disclosed. An average particle diameter of the dielectric particles, when measured parallel with the direction of the internal electrode layers, is larger than a thickness of the dielectric layer. A ratio (R/d) between the average particle diameter (R) and the thickness (d) of the dielectric layer is 1

摘要翻译： 公开了一种具有内部电极层和具有介电颗粒的电介质层的多层陶瓷电容器。 当与内部电极层的方向平行地测量时，电介质颗粒的平均粒径大于介电层的厚度。 介电层的平均粒径（R）和厚度（d）之比（R / d）为1

公开(公告)号：US07335329B2

公开(公告)日：2008-02-26

申请号：US10633686

申请日：2003-08-05

申请人： Yukie Nakano ,  Shunichi Yuri ,  Mari Miyauchi ,  Daisuke Iwanaga

发明人： Yukie Nakano ,  Shunichi Yuri ,  Mari Miyauchi ,  Daisuke Iwanaga

IPC分类号： C04B35/00 ,  H01G4/06

CPC分类号： H01G4/12 ,  H01G4/232 ,  H01G4/30 ,  Y10T29/417

摘要： A method of producing a multilayer ceramic capacitor having internal electrode layers and dielectric layers with dielectric particles is disclosed. An average particle diameter of the dielectric particles, when measured parallel with the direction of the internal electrode layers, is larger than a thickness of the dielectric layer. A ratio (R/d) between the average particle diameter (R) and the thickness (d) of the dielectric layer is 1

摘要翻译： 公开了一种制造具有内部电极层和具有电介质颗粒的电介质层的多层陶瓷电容器的方法。 当与内部电极层的方向平行地测量时，电介质颗粒的平均粒径大于介电层的厚度。 介电层的平均粒径（R）与厚度（d）之比（R / d）为1

公开(公告)号：US20050117274A1

公开(公告)日：2005-06-02

申请号：US10996424

申请日：2004-11-26

申请人： Mari Miyauchi ,  Kazunori Noguchi ,  Takako Hibi ,  Akira Sato

发明人： Mari Miyauchi ,  Kazunori Noguchi ,  Takako Hibi ,  Akira Sato

IPC分类号： H01G4/12 ,  H01G4/30 ,  H01L21/20

CPC分类号： H01G4/12

摘要： There is provided a multilayer ceramic capacitor 1, having an internal electrode layer 3 and an interlayer dielectric layer 2 having a thickness of 3.5 μm or less, wherein the interlayer dielectric layer 2 is composed of contact dielectric particles 2a contacting said internal electrode layer and noncontact dielectric particles 2b not contacting said internal electrode layer; and when assuming that an average particle diameter of the contact dielectric particles 2a is D50e and an average particle diameter of the noncontact dielectric particles 2b is D50d, D50e

摘要翻译： 提供了具有内部电极层3和厚度为3.5μm以下的层间电介质层2的多层陶瓷电容器1，其中层间电介质层2由与内部电极层接触的接触电介质粒子2a和 非接触电介质颗粒2b不接触所述内部电极层; 并且当假定接触电介质粒子2a的平均粒径为D50e，非接触电介质粒子2b的平均粒径为D50d时，D50e <0.450μm，（D50e / D50d）= 1.20〜3.00（注意，1.20 和3.00），其中即使当层间绝缘层2变薄时，也可以预期在85℃下的偏置特性的改善。

公开(公告)号：US06987662B2

公开(公告)日：2006-01-17

申请号：US11043267

申请日：2005-01-27

申请人： Takako Hibi ,  Kazunori Noguchi ,  Mari Miyauchi ,  Akira Sato

发明人： Takako Hibi ,  Kazunori Noguchi ,  Mari Miyauchi ,  Akira Sato

IPC分类号： H01G4/20 ,  H01G4/06

CPC分类号： H01G4/30 ,  H01G4/12

摘要： A multilayer ceramic capacitor 1 having internal electrode layers 3, internal dielectric layers 2 having the thickness of less than 2 μm, and external dielectric layers 20 wherein; the internal dielectric layers 2 and the external dielectric layers 20 include a plural number of dielectric particles 2a, 20a, and when y1 is ratio(D50a/D50b) of D50a and D50b where D50a is an average particle size of dielectric particles 2a included in the internal dielectric layers 2 and D50b is an average particle size of dielectric particles 20a included in the external dielectric layer 20 and located at least 5 μm away from an internal electrode layer 3a, arranged outermost part of all the internal electrode layers, to the stacked direction, and x is thickness of the internal dielectric layer 2, y1 and x satisfy the following equations, y1≦−0.75x+2.275 and y1≧−0.75x+1.675. According to the present invention, even when thickness of internal dielectric layers 2 were made thinner, a multilayer ceramic capacitor 1 wherein improvements in all kinds of electric characteristics, specially an improvement in TC bias characteristic while having sufficient dielectric constant can be expected.

摘要翻译： 具有内部电极层3，厚度小于2μm的内部电介质层2和外部电介质层20的多层陶瓷电容器1，其中： 内部电介质层2和外部电介质层20包括多个电介质粒子2a，20a，当y1为D50a和D50b的比率（D50a / D50b）时，D50 a是包含在内部电介质层2中的电介质粒子2a的平均粒径，D50b是包含在外部电介质层20中并且位于离内部电极至少5m的电介质粒子20a的平均粒径 层3a，所有内部电极层的最外面的部分为堆叠方向，x为内部电介质层2的厚度，y 1和x满足下列等式：y 1 <= - 0.75×+ 2.275和y 1> = - 0.75x + 1.675。 根据本发明，即使使内部电介质层2的厚度变薄，也可以期望具有各种电特性的改善的多层陶瓷电容器1，特别是具有足够介电常数的TC偏置特性的改善。

公开(公告)号：US07072170B2

公开(公告)日：2006-07-04

申请号：US10996424

申请日：2004-11-26

申请人： Mari Miyauchi ,  Kazunori Noguchi ,  Takako Hibi ,  Akira Sato

发明人： Mari Miyauchi ,  Kazunori Noguchi ,  Takako Hibi ,  Akira Sato

IPC分类号： H01G4/06

CPC分类号： H01G4/12

摘要： There is provided a multilayer ceramic capacitor 1, having an internal electrode layer 3 and an interlayer dielectric layer 2 having a thickness of 3.5 μm or less, wherein the interlayer dielectric layer 2 is composed of contact dielectric particles 2a contacting said internal electrode layer and noncontact dielectric particles 2b not contacting said internal electrode layer; and when assuming that an average particle diameter of the contact dielectric particles 2a is D50e and an average particle diameter of the noncontact dielectric particles 2b is D50d, D50e

摘要翻译： 提供了具有内部电极层3和厚度为3.5μm以下的层间电介质层2的多层陶瓷电容器1，其中层间电介质层2由与内部电极层接触的接触电介质粒子2a和 非接触电介质颗粒2b不接触所述内部电极层; 并且当假定接触电介质粒子2a的平均粒径为D50e，非接触电介质粒子2b的平均粒径为D50d时，D50e <0.450μm，（D50e / D50d）= 1.20〜3.00（注意，1.20 和3.00），其中即使当层间绝缘层2变薄时，也可以预期在85℃下的偏置特性的改善。

公开(公告)号：US20050180092A1

公开(公告)日：2005-08-18

申请号：US11043267

申请日：2005-01-27

申请人： Takako Hibi ,  Kazunori Noguchi ,  Mari Miyauchi ,  Akira Sato

发明人： Takako Hibi ,  Kazunori Noguchi ,  Mari Miyauchi ,  Akira Sato

IPC分类号： H01G4/12 ,  H01G4/30 ,  H01G4/06

CPC分类号： H01G4/30 ,  H01G4/12

摘要： A multilayer ceramic capacitor 1 having internal electrode layers 3, internal dielectric layers 2 having the thickness of less than 2 μm, and external dielectric layers 20 wherein; the internal dielectric layers 2 and the external dielectric layers 20 include a plural number of dielectric particles 2a, 20a, and when y1 is ratio(D50a/D50b) of D50a and D50b where D50a is an average particle size of dielectric particles 2a included in the internal dielectric layers 2 and D50b is an average particle size of dielectric particles 20a included in the external dielectric layer 20 and located at least 5 μm away from an internal electrode layer 3a, arranged outermost part of all the internal electrode layers, to the stacked direction, and x is thickness of the internal dielectric layer 2, y1 and x satisfy the following equations, y1≦−0.75x+2.275 and y1≧−0.75x+1.675. According to the present invention, even when thickness of internal dielectric layers 2 were made thinner, a multilayer ceramic capacitor 1 wherein improvements in all kinds of electric characteristics, specially an improvement in TC bias characteristic while having sufficient dielectric constant can be expected.

摘要翻译： 具有内部电极层3，厚度小于2μm的内部电介质层2和外部电介质层20的多层陶瓷电容器1，其中： 内部电介质层2和外部电介质层20包括多个电介质粒子2a，20a，当y1为D50a和D50b的比率（D50a / D50b）时，D50a 是包含在内部电介质层2中的介电粒子2a的平均粒径，D50b是包含在外部电介质层20中并且位于离内部电极层至少5um的电介质粒子20a的平均粒径 图3a是所有内部电极层的最外面部分的堆叠方向，x是内部电介质层2的厚度，y1和x满足下列等式：y1 <= - 0.75x + 2.275和y1> = - 0.75x + 1.675。 根据本发明，即使使内部电介质层2的厚度变薄，也可以期望具有各种电特性的改善的多层陶瓷电容器1，特别是具有足够介电常数的TC偏置特性的改善。

公开(公告)号：US06930876B1

公开(公告)日：2005-08-16

申请号：US11043265

申请日：2005-01-27

申请人： Kazunori Noguchi ,  Takako Hibi ,  Mari Miyauchi ,  Akira Sato

发明人： Kazunori Noguchi ,  Takako Hibi ,  Mari Miyauchi ,  Akira Sato

IPC分类号： H01G4/12 ,  H01G4/30 ,  H01G4/06

CPC分类号： H01G4/12 ,  H01G4/30

摘要： A multilayer ceramic capacitor 1 having internal electrode layers 3 and internal dielectric layers 2 having thickness of at most 3.5 μm wherein; the internal dielectric layers 2 comprising dielectric particles contacting the internal electrode layers (contacting dielectric particles 2a) and dielectric particles not contacting the internal electrode layers (non-contacting dielectric particles 2b), and when an average particle size of an entire plural number of dielectric particles included in the internal dielectric layers 2 is D50, and standard deviation for particle size range of the contacting dielectric particles is σ, the multilayer ceramic capacitor satisfy the following equations; D50≦0.25 μm and σ≦0.14. According to the present invention, multilayer ceramic capacitor 1 is provided wherein the capacitor is expected to have improved DC bias characteristic even when the internal dielectric layers 2 are made thinner.

摘要翻译： 具有内部电极层3和厚度至多3.5μm的内部电介质层2的多层陶瓷电容器1， 内部电介质层2包括与内部电极层（接触电介质粒子2a）接触的电介质粒子和不与内部电极层（非接触电介质粒子2b）接触的电介质粒子，当平均粒径为多个数量 包含在内部电介质层2中的电介质粒子为D50，接触电介质粒子的粒径范围的标准偏差为σ，多层陶瓷电容器满足下式： D50 <=0.25μm和σ<= 0.14。 根据本发明，提供了多层陶瓷电容器1，其中即使内部电介质层2变薄，预期电容器也具有改善的DC偏置特性。