Piezoelectric material and piezoelectric element
    2.
    发明授权
    Piezoelectric material and piezoelectric element 有权
    压电材料和压电元件

    公开(公告)号:US08395302B2

    公开(公告)日:2013-03-12

    申请号:US13328302

    申请日:2011-12-16

    IPC分类号: H01L41/09

    摘要: A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x) % of material A having a spontaneous polarization of 0.5 C/m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+x Tc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.

    摘要翻译: 压电元件包括​​第一电极,设置在第一电极上的压电膜和设置在压电膜上的第二电极。 该压电膜由无铅化的压电材料构成,并且通过混合100(1-x)%的在25℃下具有0.5C / m 2以上的自发极化的材料A和100​​%的具有 压电特性和介电常数在25℃下为1000以上,其中(1-x)Tc(A)+ x Tc(B)≥300℃,其中Tc(A)是材料的居里温度 A和Tc(B)是材料B的居里温度。

    PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC ELEMENT
    3.
    发明申请
    PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC ELEMENT 有权
    压电材料和压电元件

    公开(公告)号:US20120086758A1

    公开(公告)日:2012-04-12

    申请号:US13328302

    申请日:2011-12-16

    摘要: A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x) % of material A having a spontaneous polarization of 0.5 C/m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+x Tc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.

    摘要翻译: 压电元件包括​​第一电极,设置在第一电极上的压电膜和设置在压电膜上的第二电极。 该压电膜由无铅化的压电材料构成,并且通过混合100(1-x)%的在25℃下具有0.5C / m 2以上的自发极化的材料A和100​​%的具有 压电特性和介电常数在25℃下为1000以上,其中(1-x)Tc(A)+ x Tc(B)≥300℃,其中Tc(A)是材料的居里温度 A和Tc(B)是材料B的居里温度。

    Piezoelectric material and piezoelectric element
    4.
    发明授权
    Piezoelectric material and piezoelectric element 有权
    压电材料和压电元件

    公开(公告)号:US08102100B2

    公开(公告)日:2012-01-24

    申请号:US12413796

    申请日:2009-03-30

    IPC分类号: H01L41/09

    摘要: A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x)% of material A having a spontaneous polarization of 0.5 C/m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+xTc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.

    摘要翻译: 压电元件包括​​第一电极,设置在第一电极上的压电膜和设置在压电膜上的第二电极。 该压电膜由无铅化的压电材料构成,并且通过混合100(1-x)%的在25℃下具有0.5C / m 2以上的自发极化的材料A和100​​%的具有 压电特性和在25℃下介电常数为1000以上的介电常数,其中(1-x)Tc(A)+ xTc(B)≥300℃,其中Tc(A)是材料A的居里温度 Tc(B)是材料B的居里温度。

    Ferroelectric memory
    6.
    发明授权
    Ferroelectric memory 有权
    铁电存储器

    公开(公告)号:US07778060B2

    公开(公告)日:2010-08-17

    申请号:US11733891

    申请日:2007-04-11

    申请人: Yasuaki Hamada

    发明人: Yasuaki Hamada

    IPC分类号: G11C11/22

    CPC分类号: G11C11/22

    摘要: A ferroelectric memory includes: a memory cell having a ferroelectric capacitor, wherein, in a read-out operation, a first signal Q1 is given when a first voltage is applied to the ferroelectric capacitor, and a second signal Q2 is given when a second voltage having an identical magnitude as a magnitude of the first voltage in a different polarity is applied to the ferroelectric capacitor, and a judgment is made that the memory cell stores first data when Q1/Q2 is greater than ½, and second data when Q1/Q2 is smaller than ½.

    摘要翻译: 铁电存储器包括:具有铁电电容器的存储单元,其中,在读出操作中,当向所述铁电电容器施加第一电压时,给出第一信号Q1,并且当第二电压 具有与不同极性的第一电压的幅度相同的大小的值被施加到铁电电容器,并且当Q1 / Q2大于1/2时,判断存储单元存储第一数据,当Q1 / Q2 小于1/2。

    PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC ELEMENT
    8.
    发明申请
    PIEZOELECTRIC MATERIAL AND PIEZOELECTRIC ELEMENT 有权
    压电材料和压电元件

    公开(公告)号:US20090243438A1

    公开(公告)日:2009-10-01

    申请号:US12413796

    申请日:2009-03-30

    IPC分类号: H01L41/187 B41J2/045

    摘要: A piezoelectric element includes a first electrode, a piezoelectric film disposed on the first electrode, and a second electrode disposed on the piezoelectric film. The piezoelectric film is composed of piezoelectric material that is lead free and formed by mixing 100(1−x)% of material A having a spontaneous polarization of 0.5 C/m2 or greater at 25° C. and 100 x % of material B having piezoelectric characteristics and a dielectric constant of 1000 or greater at 25° C., wherein (1−x)Tc(A)+xTc(B)≧300° C., where Tc(A) is the Curie temperature of the material A and Tc(B) is the Curie temperature of the material B.

    摘要翻译: 压电元件包括​​第一电极,设置在第一电极上的压电膜和设置在压电膜上的第二电极。 该压电膜由无铅化的压电材料构成,并且通过混合100(1-x)%的在25℃下具有0.5C / m 2以上的自发极化的材料A和100​​%的具有 压电特性和在25℃下的介电常数为1000以上的介电常数,其中(1-x)Tc(A)+ xTc(B)> = 300℃,其中Tc(A)是材料的居里温度 A和Tc(B)是材料B的居里温度。

    FERROELECTRIC CAPACITOR
    9.
    发明申请
    FERROELECTRIC CAPACITOR 审中-公开
    电磁电容器

    公开(公告)号:US20080123243A1

    公开(公告)日:2008-05-29

    申请号:US11946366

    申请日:2007-11-28

    IPC分类号: H01G4/00

    摘要: A ferroelectric capacitor includes: an electrode including a platinum film; a seed layer that is formed above the electrode and is composed of oxide having a perovskite structure expressed by a general formula, A(B1-xCx)O3; and a ferroelectric layer formed above the seed layer, wherein A is composed of at least one of Sr and Ca, B is composed of at least one of Ti, Zr and Hf, C is composed of at least one of Nb and Ta, and X is in a range of 0

    摘要翻译: 铁电电容器包括:包含铂膜的电极; 形成在电极上方并由具有由通式表示的钙钛矿结构的氧化物组成的晶种层A(B 1-x C x X)O 3 ; 以及形成在种子层上的铁电层,其中A由Sr和Ca中的至少一种构成,B由Ti,Zr和Hf中的至少一种构成,C由Nb和Ta中的至少一种构成,以及 X在0