公开(公告)号：US10485099B2

公开(公告)日：2019-11-19

申请号：US16170427

申请日：2018-10-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takahiro Oka ,  Yoshitake Yamagami ,  Yuki Takemori ,  Kazuo Kishida ,  Hiromichi Kawakami

IPC: H05K1/02 ,  H05K1/03 ,  H05K3/46 ,  H05K1/11

Abstract: A multilayer ceramic substrate according to the present invention includes a plurality of base layers that are laminated containing a low-temperature co-fired ceramic material, a plurality of first constraint layers which contain a metal oxide not completely sintered at the sintering temperature of the low-temperature co-fired ceramic material and which are located between the base layers, and a protective layer which contains the metal oxide and which is in contact with an outermost base layer of the plurality of base layers in the lamination direction, and wherein X1>X2, where X1 is a content of the metal oxide in a surface section of the protective layer and X2 is a content of the metal oxide in a boundary section of the protective layer that is in contact with the outermost base layer.

公开(公告)号：US20190069396A1

公开(公告)日：2019-02-28

申请号：US16170427

申请日：2018-10-25

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takahiro Oka ,  Yoshitake Yamagami ,  Yuki Takemori ,  Kazuo Kishida ,  Hiromichi Kawakami

IPC: H05K1/02 ,  H05K1/03 ,  H05K3/46

Abstract: A multilayer ceramic substrate according to the present invention includes a plurality of base layers that are laminated containing a low-temperature co-fired ceramic material, a plurality of first constraint layers which contain a metal oxide not completely sintered at the sintering temperature of the low-temperature co-fired ceramic material and which are located between the base layers, and a protective layer which contains the metal oxide and which is in contact with an outermost base layer of the plurality of base layers in the lamination direction, and wherein X1>X2, where X1 is a content of the metal oxide in a surface section of the protective layer and X2 is a content of the metal oxide in a boundary section of the protective layer that is in contact with the outermost base layer.

公开(公告)号：US20170135205A1

公开(公告)日：2017-05-11

申请号：US15410116

申请日：2017-01-19

Applicant: Murata manufacturing Co., Ltd.

Inventor： Takahiro Sumi ,  Takahiro Oka ,  Yoshitake Yamagami

IPC: H05K1/03 ,  H05K1/11 ,  H05K3/46 ,  H05K3/22 ,  H05K3/00 ,  H05K1/09 ,  H05K3/40

CPC classification number: H05K1/0306 ,  H05K1/09 ,  H05K1/115 ,  H05K3/0044 ,  H05K3/1291 ,  H05K3/22 ,  H05K3/4038 ,  H05K3/4061 ,  H05K3/4629 ,  H05K3/4647 ,  H05K2201/0175 ,  H05K2201/09563 ,  H05K2201/098 ,  H05K2201/09809 ,  H05K2203/1126

Abstract: A ceramic wiring board that includes a ceramic insulator and a via-conductor. The ceramic insulator includes a crystalline constituent and an amorphous constituent. The via-conductor includes a metal and an oxide. The crystalline constituent and the oxide include at least one metal element in common. A tubular region having a thickness of 5 μm adjoins and surrounds the via-conductor and has a higher concentration of the metal element than the ceramic insulator.

公开(公告)号：US11350523B2

公开(公告)日：2022-05-31

申请号：US15410116

申请日：2017-01-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takahiro Sumi ,  Takahiro Oka ,  Yoshitake Yamagami

IPC: H05K1/03 ,  H05K3/12 ,  H05K3/40 ,  H05K1/09 ,  H05K1/11 ,  H05K3/00 ,  H05K3/22 ,  H05K3/46

Abstract: A ceramic wiring board that includes a ceramic insulator and a via-conductor. The ceramic insulator includes a crystalline constituent and an amorphous constituent. The via-conductor includes a metal and an oxide. The crystalline constituent and the oxide include at least one metal element in common. A tubular region having a thickness of 5 μm adjoins and surrounds the via-conductor and has a higher concentration of the metal element than the ceramic insulator.

公开(公告)号：US20200045811A1

公开(公告)日：2020-02-06

申请号：US16596981

申请日：2019-10-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takahiro Oka ,  Yoshitake Yamagami ,  Yuki Takemori ,  Kazuo Kishida ,  Hiromichi Kawakami

IPC: H05K1/02 ,  H05K3/46 ,  H05K1/03

Abstract: A multilayer ceramic substrate according to the present invention includes a plurality of base layers that are laminated containing a low-temperature co-fired ceramic material, a plurality of first constraint layers which contain a metal oxide not completely sintered at the sintering temperature of the low-temperature co-fired ceramic material and which are located between the base layers, and a protective layer which contains the metal oxide and which is in contact with an outermost base layer of the plurality of base layers in the lamination direction, and wherein X1>X2, where X1 is a content of the metal oxide in a surface section of the protective layer and X2 is a content of the metal oxide in a boundary section of the protective layer that is in contact with the outermost base layer.