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公开(公告)号：US20090160740A1
公开(公告)日：2009-06-25
申请号：US11962182
申请日：2007-12-21
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。
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2.发明申请公开(公告)号：US20100123699A1
公开(公告)日：2010-05-20
申请号：US12274559
申请日：2008-11-20
IPC分类号： G06F3/038
CPC分类号： G09G3/3233 , G09G3/2092 , G09G2300/0842 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2320/045 , G09G2320/0693 , G09G2360/16
摘要： An electroluminescent (EL) panel with 2T1C subpixels is compensated for initial nonuniformity (“mura”). The current of each subpixel is measured at a selected time to provide a status signal representing the characteristics of the subpixel. A compensator receives a linear code value and changes it according to the status signals. A linear source driver drives the panel with the changed code values.
摘要翻译： 具有2T1C子像素的电致发光（EL）面板被补偿初始不均匀性（“mura”）。 在选定的时刻测量每个子像素的电流，以提供表示子像素的特性的状态信号。 补偿器接收线性代码值，并根据状态信号进行更改。 线性源驱动器驱动面板更改的代码值。
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3.发明授权公开(公告)号：US08665295B2
公开(公告)日：2014-03-04
申请号：US12274559
申请日：2008-11-20
IPC分类号： G09G5/10
CPC分类号： G09G3/3233 , G09G3/2092 , G09G2300/0842 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2320/045 , G09G2320/0693 , G09G2360/16
摘要： An electroluminescent (EL) panel with 2T1C subpixels is compensated for initial nonuniformity (“mura”). The current of each subpixel is measured at a selected time to provide a status signal representing the characteristics of the subpixel. A compensator receives a linear code value and changes it according to the status signals. A linear source driver drives the panel with the changed code values.
摘要翻译： 具有2T1C子像素的电致发光（EL）面板被补偿初始不均匀性（“mura”）。 在选定的时刻测量每个子像素的电流，以提供表示子像素的特性的状态信号。 补偿器接收线性代码值，并根据状态信号进行更改。 线性源驱动器驱动面板更改的代码值。
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公开(公告)号：US08026873B2
公开(公告)日：2011-09-27
申请号：US11962182
申请日：2007-12-21
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。
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公开(公告)号：US08130182B2
公开(公告)日：2012-03-06
申请号：US12337668
申请日：2008-12-18
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/2022 , G09G2300/0819 , G09G2320/0295 , G09G2320/041 , G09G2320/043 , G09G2320/045
摘要： An electroluminescent (EL) subpixel driven by a digital-drive scheme has a readout transistor driven by a current source when the drive transistor is non-conducting. This produces an emitter-voltage signal from which an aging signal representing the efficiency of the EL emitter can be computed. The aging signal is used to determine the loss in current of the subpixel when active, and an input signal is adjusted to provide increased on-time to compensate for voltage rise and efficiency loss of the EL emitter. Variations due to temperature can also be compensated for.
摘要翻译： 由数字驱动方案驱动的电致发光（EL）子像素在驱动晶体管不导通时具有由电流源驱动的读出晶体管。 这产生一个发射极 - 电压信号，由此可以计算代表EL发射器效率的老化信号。 老化信号用于确定有源时子像素的电流损耗，并调整输入信号以提供增加的导通时间，以补偿EL发射极的电压上升和效率损失。 温度变化也可以补偿。
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公开(公告)号：US07355574B1
公开(公告)日：2008-04-08
申请号：US11626563
申请日：2007-01-24
IPC分类号： G09G3/32
CPC分类号： G09G3/3233 , G09G3/3241 , G09G2300/0814 , G09G2300/0819 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/041 , G09G2320/043 , G09G2320/045
摘要： Compensated drive circuit adjusting for changes in the threshold voltage of a drive transistor and for aging of an OLED device, comprising: a data line carrying analog data representative of the brightness level, and a select line; the drive transistor connected to a power supply and to the OLED device such that when the select line is activated and a voltage from the data line is applied to the gate electrode of such transistor and current proportional to the applied voltage will flow through the drain and source electrodes through the OLED device; circuitry for measuring first and second parameters associated with the drive circuitry and responsive to the measured first and second parameters for computing offset voltages to adjust for changes in the threshold voltage of the drive transistors and for aging of the OLED device.
摘要翻译： 补偿驱动电路调节驱动晶体管的阈值电压的变化和OLED器件的老化，包括：承载代表亮度级的模拟数据的数据线和选择线; 所述驱动晶体管连接到电源和所述OLED器件，使得当所述选择线被激活并且来自所述数据线的电压被施加到所述晶体管的栅电极时，与所施加的电压成比例的电流将流过所述漏极，并且 源极通过OLED器件; 用于测量与驱动电路相关联的第一和第二参数的电路，并响应于测量的第一和第二参数来计算偏移电压，以调整驱动晶体管的阈值电压的变化和OLED器件的老化。
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公开(公告)号：US07636074B2
公开(公告)日：2009-12-22
申请号：US11427104
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 , G09G2300/0866 , G09G2310/0254 , G09G2310/0256 , G09G2320/0295 , G09G2320/043
摘要： An apparatus for determining an adjustment to a signal voltage for compensating for changes in the threshold voltage (Vth) for a drive transistor in a pixel drive circuit in an active matrix OLED display having at least one OLED light-emitting pixel, comprising: the pixel drive circuit having a data line, a power supply line, a drive transistor; the drive transistor being electrically connected to the power supply line and to the OLED light-emitting pixel; the switch transistor being electrically connected to the gate electrode of the drive transistor and to the data line; first means for applying a first voltage to the power supply line; second means for applying a second voltage to the power supply line opposite in polarity to the first voltage; third means for producing a threshold-voltage-related signal on the data line; and fourth means responsive to the threshold-voltage-related signal for calculating the adjustment to the signal voltage.
摘要翻译： 一种用于确定用于补偿具有至少一个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（Vth）的变化的用于补偿信号电压的调整的装置，包括：所述像素 具有数据线的驱动电路，电源线，驱动晶体管; 驱动晶体管电连接到电源线和OLED发光像素; 开关晶体管电连接到驱动晶体管的栅电极和数据线; 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阈值电压相关信号的第三装置; 以及响应阈值电压相关信号的第四装置，用于计算对信号电压的调整。
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公开(公告)号：US20070257606A1
公开(公告)日：2007-11-08
申请号：US11429615
申请日：2006-05-05
申请人： Dustin Winters , Gary Parrett
发明人： Dustin Winters , Gary Parrett
IPC分类号： H01J1/62
CPC分类号： H01L27/3276 , H01L27/124
摘要： An electroluminescent display device comprising a plurality of pixels for generating light emission disposed over a substrate arranged in a matrix with rows and columns wherein each pixel includes first and second electrodes, an electroluminescent media disposed between the first and second electrodes, and at least one transistor electrically connected to the first electrode to regulate an electrical current flow to the organic electroluminescent media; a plurality of power lines arranged in either the row or column direction for supplying electrical current to the transistor of each pixel; at least one power bypass line electrically connected to two or more of the plurality of power lines; and the power lines formed from a patterned first conductor layer and the first electrodes and the power bypass lines formed from a patterned second conductor layer and wherein the first and second conductor layers are spaced apart from each other.
摘要翻译： 一种电致发光显示装置，包括用于产生发光的多个像素，所述多个像素设置在布置在具有行和列的矩阵中的衬底上，其中每个像素包括第一和第二电极，设置在第一和第二电极之间的电致发光介质，以及至少一个晶体管 电连接到第一电极以调节到有机电致发光介质的电流; 布置在行或列方向上的多个电力线，用于向每个像素的晶体管提供电流; 至少一个电力旁路管线电连接到所述多个电源线中的两个或更多个; 以及由图案化的第一导体层和由图案化的第二导体层形成的第一电极和功率旁路线形成的电力线，并且其中第一和第二导体层彼此间隔开。
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公开(公告)号：US08299983B2
公开(公告)日：2012-10-30
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。
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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。
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