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    COMPENSATED DRIVE SIGNAL FOR ELECTROLUMINESCENT DISPLAY
    11.
    发明申请
    COMPENSATED DRIVE SIGNAL FOR ELECTROLUMINESCENT DISPLAY 有权
    用于电致发光显示器的补偿驱动信号

    公开(公告)号：US20100123649A1

    公开(公告)日：2010-05-20

    申请号：US12272222

    申请日：2008-11-17

    申请人： John W. Hamer ,  Gary Parrett ,  Charles I. Levey

    发明人： John W. Hamer ,  Gary Parrett ,  Charles I. Levey

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3225 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

    摘要： Compensation is performed for initial nonuniformity or aging of drive transistors and electroluminescent (EL) emitters in 3T1C EL subpixels of an EL display, such as an organic light-emitting diode (OLED) display. A readout transistor connected to the EL emitter is used to readout the voltage of the emitter and compensation for ΔVth, ΔVEL, and OLED efficiency loss is performed using a model. Measurements are taken during a frame by driving a target subpixel at a higher luminance for a shorter time, then using the remaining time in the frame to measure. Measurements can be taken with an A/D converter or with a ramp generator and comparator. Compensation is performed for each subpixel individually.

    摘要翻译： 对于诸如有机发光二极管（OLED）显示器的EL显示器的3T1C EL子像素中的驱动晶体管和电致发光（EL）发射体的初始不均匀性或老化，进行补偿。 连接到EL发射器的读出晶体管用于读出发射极的电压，并且使用模型进行补偿以达到＆Dgr; Vth，＆Dgr，VEL和OLED效率损失。 通过在更短的时间内以更高的亮度驱动目标子像素，然后使用帧中的剩余时间来测量，在帧期间进行测量。 可以用A / D转换器或斜坡发生器和比较器进行测量。 对每个子像素分别执行补偿。

    ELECTROLUMINESCENT DISPLAY WITH INITIAL NONUNIFORMITY COMPENSATION
    12.
    发明申请
    ELECTROLUMINESCENT DISPLAY WITH INITIAL NONUNIFORMITY COMPENSATION 有权
    具有初始非均匀性补偿的电致发光显示器

    公开(公告)号：US20100103082A1

    公开(公告)日：2010-04-29

    申请号：US12258388

    申请日：2008-10-25

    申请人： Charles I. Levey ,  Gary Parrett

    发明人： Charles I. Levey ,  Gary Parrett

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693

    摘要： A method of compensating for differences in characteristics of a plurality of electroluminescent (EL) subpixels having readout transistors, includes providing a first voltage source connected through a first switch to each subpixel's drive transistor and a second voltage source connected through a second switch to each subpixel's EL emitter; providing a current source connected through a third switch, and a current sink connected through a fourth switch, to the readout transistor; providing a test voltage to a subpixel; closing only the first and fourth switches and measuring the readout transistor voltage to provide a first signal representative of characteristics of the drive transistor; closing only the second and third switches and measuring the voltage to provide a second signal representative of characteristics of the EL emitter; repeating for each subpixel; and using the first and second signals for each subpixel to compensate for differences in characteristics of the EL subpixels.

    摘要翻译： 一种补偿具有读出晶体管的多个电致发光（EL）子像素的特性差异的方法，包括：通过第一开关连接到每个子像素的驱动晶体管的第一电压源和通过第二开关连接到每个子像素的第二电压源 EL发射器 提供通过第三开关连接的电流源和通过第四开关连接的电流源到读出晶体管; 向子像素提供测试电压; 仅关闭第一和第四开关并测量读出晶体管电压以提供表示驱动晶体管特性的第一信号; 仅关闭第二和第三开关并测量电压以提供代表EL发射器特性的第二信号; 每个子像素重复; 并且为每个子像素使用第一和第二信号来补偿EL子像素的特性差异。

    ACTIVE MATRIX DISPLAY COMPENSATION
    13.
    发明申请
    ACTIVE MATRIX DISPLAY COMPENSATION 有权
    主动矩阵显示补偿

    公开(公告)号：US20080001855A1

    公开(公告)日：2008-01-03

    申请号：US11427139

    申请日：2006-06-28

    申请人： John W. Hamer ,  Gary Parrett

    发明人： John W. Hamer ,  Gary Parrett

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3233 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2300/0847 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043

    摘要： An apparatus for selecting a stressing voltage for compensating for changes in the threshold voltages (Vth) for drive transistors in pixel drive circuits in an active matrix OLED display having a plurality of OLED light-emitting pixels arranged in an array, comprising: each pixel drive circuit being electrically connected to a data line and a power supply line, and having a drive transistor; each drive transistor being electrically connected to its corresponding power supply line and to its corresponding OLED light-emitting pixel; each switch transistor being electrically connected to the gate electrode of its corresponding drive transistor and to its corresponding data line; first means for applying a first voltage to the power supply lines; second means for applying a second voltage to the power supply lines opposite in polarity to the first voltage; third means for producing a plurality of threshold-voltage-related signals on the data lines; fourth means responsive to the plurality of threshold-voltage-related signals for producing an average threshold-voltage-related signal; and fifth means responsive to the threshold-voltage-related signals for selecting the stressing voltage.

    摘要翻译： 一种用于选择应力电压的装置，用于补偿具有排列在多个OLED发光像素的有源矩阵OLED显示器中的像素驱动电路中的驱动晶体管的阈值电压（V SUB）的变化 阵列，包括：每个像素驱动电路电连接到数据线和电源线，并且具有驱动晶体管; 每个驱动晶体管电连接到其对应的电源线和其相应的OLED发光像素; 每个开关晶体管电连接到其对应的驱动晶体管的栅电极及其对应的数据线; 用于向所述电源线施加第一电压的第一装置; 将第二电压施加到与第一电压极性相反的电源线的第二装置; 用于在数据线上产生多个阈值电压相关信号的第三装置; 响应于所述多个阈值电压相关信号以产生平均阈值电压相关信号的第四装置; 以及响应于所述阈值电压相关信号用于选择所述应力电压的第五装置。

    Compensated drive signal for electroluminescent display
    18.
    发明授权
    Compensated drive signal for electroluminescent display 有权
    用于电致发光显示的补偿驱动信号

    公开(公告)号：US08358256B2

    公开(公告)日：2013-01-22

    申请号：US12272222

    申请日：2008-11-17

    申请人： John W. Hamer ,  Gary Parrett ,  Charles I. Levey

    发明人： John W. Hamer ,  Gary Parrett ,  Charles I. Levey

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3225 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

    摘要： Compensation is performed for initial nonuniformity or aging of drive transistors and electroluminescent (EL) emitters in 3T1C EL subpixels of an EL display, such as an organic light-emitting diode (OLED) display. A readout transistor connected to the EL emitter is used to readout the voltage of the emitter and compensation for ΔVth, ΔVEL, and OLED efficiency loss is performed using a model. Measurements are taken during a frame by driving a target subpixel at a higher luminance for a shorter time, then using the remaining time in the frame to measure. Measurements can be taken with an A/D converter or with a ramp generator and comparator. Compensation is performed for each subpixel individually.

    摘要翻译： 对于诸如有机发光二极管（OLED）显示器的EL显示器的3T1C EL子像素中的驱动晶体管和电致发光（EL）发射体的初始不均匀性或老化，进行补偿。 连接到EL发射器的读出晶体管用于读出发射极的电压，并且使用模型进行补偿以达到＆Dgr; Vth，＆Dgr，VEL和OLED效率损失。 通过在更短的时间内以更高的亮度驱动目标子像素，然后使用帧中的剩余时间来测量，在帧期间进行测量。 可以用A / D转换器或斜坡发生器和比较器进行测量。 对每个子像素分别执行补偿。

    Electroluminescent display compensated analog transistor drive signal
    19.
    发明授权
    Electroluminescent display compensated analog transistor drive signal 有权
    电致发光显示补偿模拟晶体管驱动信号

    公开(公告)号：US08026873B2

    公开(公告)日：2011-09-27

    申请号：US11962182

    申请日：2007-12-21

    申请人： Felipe A. Leon ,  Christopher J. White ,  Gary Parrett ,  Bruno Primerano

    发明人： Felipe A. Leon ,  Christopher J. White ,  Gary Parrett ,  Bruno Primerano

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3291 ,  G09G3/3233 ,  G09G2300/0417 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045

    摘要： Apparatus for providing an analog drive transistor control signal to the gate electrode of a drive transistor in a drive circuit that applies current to an EL device, the drive circuit including a first supply electrode of the drive transistor and the EL device connected to a second supply electrode of the drive transistor, comprising a measuring circuit for measuring the current passing through the supply electrodes at different times to provide an aging signal representing variations in the characteristics of the drive transistor and EL device caused by operation of the drive transistor and EL device over time; a compensator for changing a linear code value in response to the aging signal to compensate for the variations in the characteristics of the drive transistor and EL device; and a linear source driver for producing the analog drive transistor control signal in response to the changed linear code value.

    摘要翻译： 一种用于向施加电流至EL器件的驱动电路中的驱动晶体管的栅电极提供模拟驱动晶体管控制信号的装置，所述驱动电路包括驱动晶体管的第一电源电极和连接到第二电源的EL器件 驱动晶体管的电极，包括用于测量在不同时间通过供电电极的电流的测量电路，以提供表示由驱动晶体管和EL器件的操作引起的驱动晶体管和EL器件的特性变化的老化信号 时间; 补偿器，用于响应于老化信号改变线性代码值，以补偿驱动晶体管和EL器件的特性的变化; 以及用于响应于改变的线性代码值产生模拟驱动晶体管控制信号的线性源极驱动器。