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    • 1. 发明授权
    • Procedures and apparatus for turning-on and turning-off elements within a field emission display device
    • 场致发射显示装置内的接通和关断元件的程序和装置
    • US06462484B2
    • 2002-10-08
    • US09796868
    • 2001-02-28
    • James C. DunphyRonald L. HansenBrian E. LindbergJerome M. TruppaDonald J. EllowayDuke K. Amaniampong
    • James C. DunphyRonald L. HansenBrian E. LindbergJerome M. TruppaDonald J. EllowayDuke K. Amaniampong
    • G09G310
    • H01J9/44G09G3/22G09G2310/066H01J2209/0223
    • A circuit and method for turning-on and turning-off elements of an field emission display (FED) device to protect against emitter electrode and gate electrode degradation. The circuit includes control logic having a sequencer which in one embodiment can be realized using a state machine. Upon power-on, the control logic sends an enable signal to a high voltage power supply that supplies voltage to the anode electrode. At this time a low voltage power supply and driving circuitry are disabled. Upon receiving a confirmation signal from the high voltage power supply, the control logic enables the low voltage power supply which supplies voltage to the driving circuitry. Upon receiving a confirmation signal from the low voltage power supply, or optionally after expiration of a predetermined time period, the control logic then enables the driving circuitry which drives the gate electrodes and the emitter electrodes which make up the rows and columns of the FED device. Upon power down, the control logic first disables the low voltage power supply, then the high voltage power supply. The above may occur upon each time the FED is powered-on and powered-off during the normal operational use of the display. By so doing, embodiments of the present invention reduce emitter electrode and gate electrode degradation by restricting electron emission from the emitter electrode directly to the gate electrode.
    • 用于场致发射显示器(FED)器件的导通和关断元件的电路和方法,以防止发射极电极和栅极电极劣化。 电路包括具有定序器的控制逻辑,在一个实施例中可以使用状态机来实现。 上电时,控制逻辑向向阳极提供电压的高电压电源发送使能信号。 此时,低电压电源和驱动电路被禁用。 在从高电压电源接收到确认信号时,控制逻辑使能向驱动电路提供电压的低压电源。 当接收到来自低电压电源的确认信号时,或者可选地,在预定时间段期满之后,控制逻辑使能驱动构成FED装置的行和列的栅电极和发射电极的驱动电路 。 断电时,控制逻辑首先禁用低压电源,然后禁用高压电源。 上述可能在每次FED在显示器的正常操作使用期间通电和断电时发生。 通过这样做,本发明的实施例通过将发射电极的电子发射直接限制到栅电极来减少发射极电极和栅极电极的劣化。
    • 4. 发明授权
    • Methods and systems for compensating row-to-row brightness variations of a field emission display
    • 用于补偿场发射显示器的行到行亮度变化的方法和系统
    • US07403175B1
    • 2008-07-22
    • US10969494
    • 2004-10-19
    • James C. DunphyWilliam CummingsChristopher J. SpindtRonald L. HansenJun (Gordon) LiuLee CressiColin Stanners
    • James C. DunphyWilliam CummingsChristopher J. SpindtRonald L. HansenJun (Gordon) LiuLee CressiColin Stanners
    • G09G3/22
    • G09G3/22G09G2320/0233G09G2320/0285
    • Methods for compensating for brightness variations in a field emission device. In one embodiment, a method and system are described for measuring the relative brightness of rows of a field emission display (FED) device, storing information representing the measured brightness into a correction table and using the correction table to provide uniform row brightness in the display by adjusting row voltages and/or row on-time periods. A special measurement process is described for providing accurate current measurements on the rows. This embodiment compensates for brightness variations of the rows, e.g., for rows near the spacer walls. In another embodiment, a periodic signal, e.g., a high frequency noise signal, is added to the row on-time pulse in order to camouflage brightness variations in the rows near the spacer walls. In another embodiment, the area under the row on-time pulse is adjusted to provide row-by-row brightness compensation based on correction values stored in a memory resident correction table. In another embodiment, the brightness of each row is measured and compiled into a data profile for the FED. The data profile is used to control cathode burn-in processes so that brightness variations are corrected by physically altering the characteristics of the emitters of the rows.
    • 补偿场致发射装置的亮度变化的方法。 在一个实施例中,描述了用于测量场发射显示(FED)装置的行的相对亮度的方法和系统,将表示测量的亮度的信息存储到校正表中,并且使用校正表在显示器中提供均匀的行亮度 通过调整行电压和/或行导通时间周期。 描述了一种特殊的测量过程,用于在行上提供精确的电流测量。 该实施例补偿行的亮度变化,例如用于靠近隔离壁的行。 在另一个实施例中,周期性信号,例如高频噪声信号,被添加到行准时脉冲,以伪装靠近隔离壁的行中的亮度变化。 在另一实施例中,根据存储在存储器驻留校正表中的校正值,调整行导通时间脉冲之下的面积以提供逐行亮度补偿。 在另一个实施例中,测量每行的亮度并将其编译成用于FED的数据简档。 数据轮廓用于控制阴极老化过程,从而通过物理地改变行的发射器的特性来校正亮度变化。
    • 5. 发明授权
    • Methods and systems for compensating row-to-row brightness variations of a field emission display
    • 用于补偿场发射显示器的行到行亮度变化的方法和系统
    • US06822628B2
    • 2004-11-23
    • US09895985
    • 2001-06-28
    • James C. DunphyWilliam CummingsChristopher J. SpindtRonald L. HansenJun (Gordon) LiuLee CressiColin Stanners
    • James C. DunphyWilliam CummingsChristopher J. SpindtRonald L. HansenJun (Gordon) LiuLee CressiColin Stanners
    • G09G322
    • G09G3/22G09G2320/0233G09G2320/0285
    • Methods for compensating for brightness variations in a field emission device. In one embodiment, a method and system are described for measuring the relative brightness of rows of a field emission display (FED) device, storing information representing the measured brightness into a correction table and using the correction table to provide uniform row brightness in the display by adjusting row voltages and/or row on-time periods. A special measurement process is described for providing accurate current measurements on the rows. This embodiment compensates for brightness variations of the rows, e.g., for rows near the spacer walls. In another embodiment, a periodic signal, e.g., a high frequency noise signal, is added to the row on-time pulse in order to camouflage brightness variations in the rows near the spacer walls. In another embodiment, the area under the row on-time pulse is adjusted to provide row-by-row brightness compensation based on correction values stored in a memory resident correction table. In another embodiment, the brightness of each row is measured and compiled into a data profile for the FED. The data profile is used to control cathode burn-in processes so that brightness variations are corrected by physically altering the characteristics of the emitters of the rows.
    • 补偿场致发射装置的亮度变化的方法。 在一个实施例中,描述了用于测量场发射显示(FED)装置的行的相对亮度的方法和系统,将表示测量的亮度的信息存储到校正表中,并且使用校正表在显示器中提供均匀的行亮度 通过调整行电压和/或行导通时间周期。 描述了一种特殊的测量过程,用于在行上提供精确的电流测量。 该实施例补偿行的亮度变化,例如用于靠近隔离壁的行。 在另一个实施例中,周期性信号,例如高频噪声信号,被添加到行准时脉冲,以伪装靠近隔离壁的行中的亮度变化。 在另一实施例中,根据存储在存储器驻留校正表中的校正值,调整行导通时间脉冲之下的面积以提供逐行亮度补偿。 在另一个实施例中,测量每行的亮度并将其编译成用于FED的数据简档。 数据轮廓用于控制阴极老化过程,从而通过物理地改变行的发射器的特性来校正亮度变化。
    • 9. 发明授权
    • Method for minimizing zero current shift in a flat panel display
    • 使平板显示器中的零电流偏移最小化的方法
    • US06722935B1
    • 2004-04-20
    • US09895531
    • 2001-06-29
    • James C. DunphyChristopher J. Spindt
    • James C. DunphyChristopher J. Spindt
    • H01J924
    • H01J29/467H01J9/185H01J9/242H01J29/028H01J29/864H01J31/127H01J2329/864H01J2329/8645H01J2329/865H01J2329/8655H01J2329/8665
    • In a flat-panel display structure having a spacer with laterally segmented face electrodes, one embodiment of the present invention defines the length of the laterally segmented face electrode sections to minimize zero current shift variation in electron trajectories. Advantageously, the present embodiment of the invention prevents image quality degradation. In one embodiment, values for variation in the uniformity of and dicing tolerance are combined to calculate a design optimum for the length of laterally segmented face electrodes. Zero current shift variation from fluctuations in wall resistance falls off with the length of laterally segmented face electrodes. Zero current shift due to first order angular alignment during dicing varies linearly with the dashed electrode length. In one embodiment of the present invention, an optimal value is calculated by combining these effects to minimize zero current shift. Advantageously, in one embodiment, the electrode segments are individually testable.
    • 在具有具有横向分割的面电极的间隔件的平板显示器结构中,本发明的一个实施例限定了横向分割的面电极部分的长度,以最小化电子轨迹中的零电流偏移变化。 有利地,本发明的本实施例防止图像质量下降。 在一个实施例中,组合均匀度和切割公差的变化值,以计算横向分割的面电极的长度的最佳设计。 零电流偏移随壁面电阻波动的变化随着横向分段面电极的长度而下降。 在切割期间由于一阶角度对准导致的零电流偏移随虚线电极长度线性变化。 在本发明的一个实施例中,通过组合这些效应来计算最佳值以将零电流偏移最小化。 有利地,在一个实施例中,电极段是可单独测试的。