Ferroelectric memory cell arrangement
    23.
    发明授权
    Ferroelectric memory cell arrangement 失效
    铁电存储单元布置

    公开(公告)号:US5471417A

    公开(公告)日:1995-11-28

    申请号:US87814

    申请日:1993-07-09

    摘要: In the memory cell arrangement, each memory cell consists of a field-effect transistor comprising a gate dielectric (14) which contains at least one ferroelectric layer (142). Depending on the sign of the remanent polarization of the ferroelectric layer (142), the field-effect transistor exhibits one of two different threshold voltages which have the same sign and which are allocated to the logic states "0" and "1". Information is written in by repolarizing the ferroelectric layer (142), information items are read by applying a voltage to the gate electrode of the field-effect transistor, the voltage being between the two threshold voltages.

    摘要翻译: PCT No.PCT / DE91 / 00957 Sec。 371日期:1993年7月9日 102(e)日期1993年7月9日PCT 1991年12月10日PCT PCT。 第WO92 / 12518号公报 日期为1992年7月23日。在存储单元布置中,每个存储单元由包含至少一个铁电层(142)的栅极电介质(14)的场效应晶体管组成。 取决于铁电层(142)的剩余极化的符号,场效应晶体管呈现具有相同符号且分配给逻辑状态“0”和“1”的两个不同阈值电压之一。 通过对铁电体层142进行复极化来写入信息,通过向场效应晶体管的栅电极施加电压来读取信息,电压在两个阈值电压之间。

    Apparatus for contact-free measurement of electrical charge images
generated by electro-radiographic recording methods
    25.
    发明授权
    Apparatus for contact-free measurement of electrical charge images generated by electro-radiographic recording methods 失效
    用于无电极测量由电子照相记录方法产生的电荷图像的装置

    公开(公告)号:US4541017A

    公开(公告)日:1985-09-10

    申请号:US513011

    申请日:1983-07-12

    IPC分类号: G01T1/29 G03G15/054 H04N1/02

    CPC分类号: G01T1/2928 G03G15/054

    摘要: An apparatus for contact-free measurement of electrical charge images of the type generated on a storage plate as transmission images by means of electro-radiographic recording methods has a matrix of dynamically functioning probes, such as Kelvin probes, for scanning the effect of the electrostatic induction caused by the image on the storage plate, the outputs of the probes being amplified and supplied to a display device such as a picture screen. The individual probes of the matrix are electrically conductive elements and a mechanical oscillation is generated between the charge image and the probes in the field to be measured either by oscillating the probes or by oscillating the storage plate. The charge amounts electrostatically induced in the probes are tapped as the image signals.

    摘要翻译: 用于通过电摄影记录方法在存储板上产生的类型的电荷图像进行无接触测量的装置具有用于扫描静电效应的动态功能探针(例如开尔文探针)的矩阵, 由存储板上的图像引起的感应,探针的输出被放大并提供给诸如图像屏幕的显示装置。 矩阵的单个探针是导电元件,并且通过振荡探针或通过振荡存储板,在要测量的场中的电荷图像和探针之间产生机械振荡。 在探针中静电感应的电荷量作为图像信号被敲击。