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    • 32. 发明授权
    • Sense amplifier circuit for use in a nonvolatile semiconductor memory device
    • 用于非易失性半导体存储器件的感测放大器电路
    • US06400606B1
    • 2002-06-04
    • US09677287
    • 2000-10-02
    • Sung-Hee Cho
    • Sung-Hee Cho
    • G11C1134
    • G11C16/28
    • A novel sense amplifier circuit is provided that includes a resistor and a reference cell connected in parallel to a reference line. The reference cell is composed of a floating-gate field effect transistor having the same characteristic as a memory cell. The reference cell is programmed so as to have a threshold voltage between the threshold voltages of an associated memory cell transistor in an on-state and an off state. According to this circuit configuration, a reference current is determined only by a current flowing through the resistor, when a gate voltage to a memory/reference cell is higher than the threshold voltage of the reference cell. This forces the reference current to exist between the on-cell current and the off-cell current, regardless of the gate voltage. Therefore, the maximum operating voltage of the sense amplifier circuit according to the invention is not limited by a variation of the gate voltage to the memory/reference cell, or by a variation of a power supply voltage.
    • 提供了一种新颖的读出放大器电路,其包括与参考线并联连接的电阻器和参考单元。 参考单元由具有与存储单元相同特性的浮栅场效应晶体管组成。 参考单元被编程为具有处于导通状态和截止状态的相关联的存储单元晶体管的阈值电压之间的阈值电压。 根据该电路结构,当存储器/参考单元的栅极电压高于参考单元的阈值电压时,仅通过流经电阻器的电流确定参考电流。 这迫使参考电流存在于电池电流和截止电池电流之间,而不管栅极电压如何。 因此,根据本发明的读出放大器电路的最大工作电压不受限于栅极电压与存储器/参考单元的变化或者电源电压的变化的限制。
    • 38. 发明授权
    • Electron emission device, electron emission display device including the electron emission device, and method of driving the electron emission device
    • 电子发射装置,包括电子发射装置的电子发射显示装置和驱动电子发射装置的方法
    • US07687982B2
    • 2010-03-30
    • US11510560
    • 2006-08-28
    • Sung-Hee ChoJong-Hwan Park
    • Sung-Hee ChoJong-Hwan Park
    • H01J1/62
    • G09G3/22G09G3/2014G09G2310/06G09G2330/021
    • An electron emission device that is driven at a low voltage has lower power consumption, and can be mass-produced. An electron emission display device includes the electron emission device, The electron emission device includes: a base substrate; a cathode electrode disposed on the base substrate; an electron emission source disposed on the cathode electrode; a data electrode disposed above the electron emission source; a scan electrode disposed above the data electrode; and insulating layers insulating each electrode from the other electrodes. A method of driving the electron emission device includes maintaining a voltage at the cathode electrode of below 0 V or a ground level, maintaining a positive voltage at the scan electrode, and maintaining a voltage at the data electrode of below 0 V; and intermittently providing a positive voltage at the data electrode for a predetermined period of time such that electrons can travel toward the scan electrode for the predetermined period of time.
    • 以低电压驱动的电子发射装置具有较低的功耗,并且可以批量生产。 电子发射显示装置包括电子发射装置。电子发射装置包括:基底; 设置在所述基底基板上的阴极电极; 设置在阴极上的电子发射源; 设置在电子发射源上方的数据电极; 设置在所述数据电极上方的扫描电极; 绝缘层将每个电极与其它电极绝缘。 驱动电子发射器件的方法包括:将阴极电压维持在0V以下或接地电平,维持扫描电极处的正电压,并保持数据电极处的电压低于0V; 并且在数据电极上间歇地提供正电压达预定时间段,使得电子可以朝着扫描电极行进预定的时间段。