Piezoelectric crystalline film of zinc oxide containing additive elements
    41.
    发明授权
    Piezoelectric crystalline film of zinc oxide containing additive elements 失效
    包含添加元素的氧化锌的压电晶体膜

    公开(公告)号:US4164676A

    公开(公告)日:1979-08-14

    申请号:US927401

    申请日:1978-07-24

    CPC分类号: H01L41/187

    摘要: Piezoelectric crystalline film on a substrate, which is a crystalline zinc oxide film with a c-axis perpendicular to the substrate surface, the crystalline zinc oxide film containing as additive elements, vanadium, manganese and at least one element selected from the group consisting of chromium, iron, cobalt and nickel. The piezoelectric crystalline films are homogeneous and have high resistivity and a smooth surface so that they can be used as a transducer with good conversion efficiency in a wide range of low to high frequencies.

    摘要翻译: 作为与基板表面垂直的c轴的结晶性氧化锌膜的基板上的压电晶体膜,含有作为添加元素的结晶性氧化锌膜,钒,锰以及选自铬 ,铁,钴和镍。 压电晶体膜是均匀的并且具有高电阻率和平滑的表面,使得它们可以用作在宽范围的低至高频率下具有良好转换效率的换能器。

    Method and apparatus for controlling ultrasonic waves
    44.
    发明授权
    Method and apparatus for controlling ultrasonic waves 失效
    用于控制超声波的方法和装置

    公开(公告)号:US4080838A

    公开(公告)日:1978-03-28

    申请号:US739043

    申请日:1976-11-05

    IPC分类号: G10K11/34 G01N29/04

    CPC分类号: G10K11/346

    摘要: In a method for controlling ultrasonic waves wherein a plurality of elements constituting a phased array ultrasonic transducer are driven with desired delay times, the improvement therein comprising the fact that when values obtained by quantizing the delay times by a predetermined time are different between the adjacent elements, the ultrasonic waves are radiated with a delay of time corresponding to the difference.

    摘要翻译: 在用于控制超声波的方法中,其中以期望的延迟时间驱动构成相控阵超声波换能器的多个元件,其中的改进包括以下事实:当通过将延迟时间量化预定时间而获得的值在相邻元件之间是不同的 超声波以对应于该差的时间的延迟被辐射。

    Semiconductor integrated circuit and system guaranteeing proper operation under low-temperature condition
    48.
    发明申请
    Semiconductor integrated circuit and system guaranteeing proper operation under low-temperature condition 审中-公开
    半导体集成电路和系统保证在低温条件下正常工作

    公开(公告)号:US20070216376A1

    公开(公告)日:2007-09-20

    申请号:US11505439

    申请日:2006-08-17

    申请人: Toshio Ogawa

    发明人: Toshio Ogawa

    IPC分类号: G05F1/10

    摘要: A semiconductor integrated circuit includes a measurement circuit configured to detect a measuring quantity dependent on temperature, and a heating circuit configured to generate heat in response to a detection, by the measurement circuit, of the measuring quantity indicating that the temperature is lower than a predetermined level.

    摘要翻译: 半导体集成电路包括被配置为检测取决于温度的测量量的测量电路和被配置为响应于由测量电路检测到表示温度低于预定值的测量量而产生热量的加热电路 水平。

    Memory system and operating method of same
    49.
    发明申请
    Memory system and operating method of same 有权
    内存系统和操作方法相同

    公开(公告)号:US20070091678A1

    公开(公告)日:2007-04-26

    申请号:US11583129

    申请日:2006-10-19

    IPC分类号: G11C16/06

    摘要: A volatile memory has a volatile additional area for storing an error correction code for a nonvolatile memory. Data stored in the nonvolatile memory are transferred to the volatile memory together with the error correction code without making an error correction. Thus, data transfer time from the nonvolatile memory to the volatile memory can be shortened. As a result, it is possible to shorten the time from beginning of the data transfer from the nonvolatile memory to the volatile memory to a point at which data becomes accessible.

    摘要翻译: 易失性存储器具有用于存储用于非易失性存储器的纠错码的易失性附加区域。 存储在非易失性存储器中的数据与错误校正码一起传送到易失性存储器,而不进行纠错。 因此,可以缩短从非易失性存储器到易失性存储器的数据传送时间。 结果,可以缩短从非易失性存储器到易失性存储器的数据传输开始到数据可访问的时间。

    Domain controlled piezoelectric single crystal and fabrication method therefor
    50.
    发明授权
    Domain controlled piezoelectric single crystal and fabrication method therefor 有权
    域控压电单晶及其制造方法

    公开(公告)号:US06756238B2

    公开(公告)日:2004-06-29

    申请号:US10246400

    申请日:2002-09-19

    IPC分类号: H01L2100

    CPC分类号: H01L41/257 H01L41/1875

    摘要: A domain controlled piezoelectnc single crystal is disclosed which uses a lateral vibration mode for an electromechanical coupling factor k31 not less than 70% and a piezoelectric constant −d31 not less than 1200 pC/N, with an electromechanical coupling factor k33 in the longitudinal vibration mode not less than 80% and a piezoelectric constant d33 not less than 800 pC/N. Also, a piezoelectric single crystal is disclosed which uses a high-performance longitudinal vibration mode with k31 not more than 30%. A fabrication method applies a DC electric field of 400 V/mm to 1500 V/mm for a maximum of two hours in a temperature range of 20° C. to 200° C. as polarization conditions in the thickness direction of the piezoelectric single crystal. The method can include cooling, or heating and cooling between temperature boundaries of rhombohedral and tetragonal crystals or between tetragonal and cubic crystals or within a cubic crystal temperature range.

    摘要翻译: 公开了一种领域控制的压电单体,其使用侧向振动模式用于不小于70%的机电耦合系数k31和不小于1200pC / N的压电常数-d31,纵向振动模式中的机电耦合系数k33 不小于80%,压电常数d33不低于800pC / N。 此外,公开了使用k31不高于30%的高性能纵向振动模式的压电单晶。 制造方法在20℃至200℃的温度范围内将400V / mm至1500V / mm的DC电场最大化为2小时,作为压电单晶的厚度方向的极化条件 。 该方法可以包括在菱方体晶体和四方晶体的温度边界之间或四方晶体和立方晶体之间或在立方晶体温度范围内的冷却或加热和冷却。