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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：US20110074750A1
公开(公告)日：2011-03-31
申请号：US12568786
申请日：2009-09-29
IPC分类号： G09G5/00
CPC分类号： G09G3/3208 , G09G3/30 , G09G3/3233 , G09G2300/0465 , G09G2320/0242 , G09G2320/029 , G09G2320/041 , G09G2320/043 , G09G2360/141 , G09G2360/145
摘要： An electroluminescent (EL) device including an illumination area having one or more primary EL emitters; a reference area having a reference EL emitter; a reference driver circuit for causing the reference EL emitter to emit light while the EL device is active; a sensor for detecting light emitted by the reference EL emitter; and a measurement unit for detecting an aging-related electrical parameter of the reference EL emitter while it is emitting light. The device further includes a controller for receiving an input signal for each primary EL emitter in the illumination area, forming a corrected input signal from each input signal using the detected light and the aging-related electrical parameter, and applying the corrected input signals to the respective primary EL emitters in the illumination area.
摘要翻译： 一种电致发光（EL）装置，包括具有一个或多个初级EL发射体的照明区域; 参考区域，具有参考EL发射器; 一个参考驱动器电路，用于在EL器件有效时引起参考EL发射器发光; 用于检测由所述基准EL发射器发射的光的传感器; 以及测量单元，用于在发光时检测参考EL发射器的老化相关电参数。 该装置还包括控制器，用于接收照明区域中的每个初级EL发射器的输入信号，使用检测到的光和与老化相关的电参数从每个输入信号形成校正的输入信号，并将校正的输入信号施加到 在照明区域中的各个初级EL发射器。
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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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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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5.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：US08339386B2
公开(公告)日：2012-12-25
申请号：US12568786
申请日：2009-09-29
IPC分类号： G06F3/038
CPC分类号： G09G3/3208 , G09G3/30 , G09G3/3233 , G09G2300/0465 , G09G2320/0242 , G09G2320/029 , G09G2320/041 , G09G2320/043 , G09G2360/141 , G09G2360/145
摘要： An electroluminescent (EL) device including an illumination area having one or more primary EL emitters; a reference area having a reference EL emitter; a reference driver circuit for causing the reference EL emitter to emit light while the EL device is active; a sensor for detecting light emitted by the reference EL emitter; and a measurement unit for detecting an aging-related electrical parameter of the reference EL emitter while it is emitting light. The device further includes a controller for receiving an input signal for each primary EL emitter in the illumination area, forming a corrected input signal from each input signal using the detected light and the aging-related electrical parameter, and applying the corrected input signals to the respective primary EL emitters in the illumination area.
摘要翻译： 一种电致发光（EL）装置，包括具有一个或多个初级EL发射体的照明区域; 参考区域，具有参考EL发射器; 一个参考驱动器电路，用于在EL器件有效时引起参考EL发射器发光; 用于检测由所述基准EL发射器发射的光的传感器; 以及测量单元，用于在发光时检测参考EL发射器的老化相关电参数。 该装置还包括控制器，用于接收照明区域中的每个初级EL发射器的输入信号，使用检测到的光和与老化相关的电参数从每个输入信号形成校正的输入信号，并将校正的输入信号施加到 在照明区域中的各个初级EL发射器。
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公开(公告)号：US08004479B2
公开(公告)日：2011-08-23
申请号：US11946392
申请日：2007-11-28
IPC分类号： G09G3/30
CPC分类号： G09G3/3225 , G09G3/007 , G09G2300/0417 , G09G2300/0426 , G09G2300/0465 , G09G2310/0232 , G09G2320/029 , G09G2320/043 , G09G2320/045 , G09G2320/046 , G09G2320/0626
摘要： A method of compensating for changes in the characteristics of transistors and EL devices in an EL display, includes providing an EL display having a two-dimensional array of EL devices arranged in rows and columns, wherein each EL device is driven by a drive circuit in response to a drive signal; providing a first drive circuit for an EL device having three transistors and providing a second drive circuit for an EL device having only two transistors, and wherein a first column in the display includes at least one first drive circuit and an adjacent second column includes at least one second drive circuit; deriving a correction signal based on the characteristics of a transistor in a first drive circuit, or the EL device; and using the correction signal to adjust the drive signals applied to the first drive circuit and one or more adjacent second drive circuits.
摘要翻译： 一种补偿EL显示器中的晶体管和EL器件的特性变化的方法包括提供具有排列成行和列的EL器件的二维阵列的EL显示器，其中每个EL器件由驱动电路驱动 响应驱动信号; 为具有三个晶体管的EL器件提供第一驱动电路，并为仅具有两个晶体管的EL器件提供第二驱动电路，并且其中显示器中的第一列包括至少一个第一驱动电路和相邻的第二列至少包括 一秒驱动电路; 基于第一驱动电路中的晶体管或EL器件的特性导出校正信号; 以及使用所述校正信号来调整施加到所述第一驱动电路和一个或多个相邻的第二驱动电路的驱动信号。
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9.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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公开(公告)号：US20090167644A1
公开(公告)日：2009-07-02
申请号：US11965847
申请日：2007-12-28
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2300/0417 , G09G2300/0465 , G09G2300/0842 , G09G2310/0254 , G09G2320/0295 , G09G2320/043
摘要： A method for resetting drive transistors associated with subpixels in an electroluminescent display, comprising providing an electroluminescent display having a plurality of subpixels, each subpixel including an electroluminescent device and a drive circuit having a drive transistor for providing current through its associated electroluminescent device; providing a separate aging signal for each subpixel during operation of the electroluminescent display after a predetermined operating time period by responding as a function of the current passing through each of the subpixels or as a function of a voltage associated with each drive circuit; comparing each of the separate aging signals with a corresponding threshold level to produce a separate staleness signal for each subpixel representing whether or not the associated drive transistor should be reset; and resetting the associated drive transistors in response to staleness signals that indicate such drive transistors should be reset.
摘要翻译： 一种用于重置与电致发光显示器中的子像素相关联的驱动晶体管的方法，包括提供具有多个子像素的电致发光显示器，每个子像素包括电致发光器件和具有驱动晶体管的驱动电路，所述驱动晶体管用于通过其相关联的电致发光器件提供电流; 在通过响应于通过每个子像素的电流的函数或作为与每个驱动电路相关联的电压的函数的响应之后，在预定操作时间段之后在电致发光显示器的操作期间为每个子像素提供单独的老化信号; 将每个单独的老化信号与相应的阈值电平进行比较，以产生用于每个子像素分别表示相关的驱动晶体管是否应被复位的单独的恒定信号; 并且响应于指示这种驱动晶体管的稳定信号应该复位相关的驱动晶体管。
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