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61.发明申请Signal processing device, signal processing method, display device, and electronic apparatus 审中-公开信号处理装置，信号处理方法，显示装置以及电子装置公开(公告)号：US20120162284A1
公开(公告)日：2012-06-28
申请号：US13317368
申请日：2011-10-17
IPC分类号： G09G5/10
CPC分类号： G09G3/3233 , G09G2320/0285 , G09G2320/0295 , G09G2320/048
摘要： A signal processing device includes a measuring unit, a conversion efficiency calculation unit, and a conversion efficient deterioration value calculation unit. The measuring unit outputs levels of driving signals having different magnitudes every update period to drive a pixel circuit and measures the luminance of the pixel circuit when driven accordingly. The conversion efficiency calculation unit calculates a conversion efficiency value of the pixel circuit based on the relationship between driving current value and luminance value. The conversion efficiency deterioration value calculation unit compares the conversion efficiency value of the pixel circuit with a conversion efficiency value of a correction reference state, calculates a conversion efficiency deterioration value corresponding to an elapsed time from the correction reference state, and updates luminance deterioration information with the conversion efficiency deterioration value.
摘要翻译： 信号处理装置包括测量单元，转换效率计算单元和转换有效劣化值计算单元。 测量单元在每个更新周期输出具有不同幅度的驱动信号的电平以驱动像素电路，并且相应地驱动时测量像素电路的亮度。 转换效率计算单元基于驱动电流值和亮度值之间的关系来计算像素电路的转换效率值。 转换效率劣化值计算单元将像素电路的转换效率值与校正基准状态的转换效率值进行比较，从校正基准状态计算与经过时间对应的转换效率恶化值，并且更新亮度劣化信息 转换效率劣化值。
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公开(公告)号：US20120154453A1
公开(公告)日：2012-06-21
申请号：US13302600
申请日：2011-11-22
CPC分类号： G09G3/3225 , G09G2320/0285 , G09G2320/041 , G09G2320/045 , G09G2320/046 , G09G2320/048
摘要： A display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator.
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63.发明申请公开(公告)号：US20120120036A1
公开(公告)日：2012-05-17
申请号：US13354908
申请日：2012-01-20
CPC分类号： G09G3/3233 , G09G3/3208 , G09G3/3258 , G09G5/10 , G09G2300/0819 , G09G2300/0861 , G09G2310/0289 , G09G2320/0214 , G09G2320/0233 , H01L27/1255 , H01L27/322 , H01L27/3248 , H01L27/3258 , H01L27/3262 , H01L27/3265 , H01L27/3276 , H01L51/5228 , H01L51/524 , H01L51/5246
摘要： In a display apparatus including a switching transistor, a correction voltage for eliminating an effect of a variation in a characteristic of a driving transistor is stored in a storage capacitor. The switching transistor is disposed between one current terminal of the driving transistor and a light emitting element. The switching transistor turns off during the non-light emission period thereby to electrically disconnect the light emitting element from the one current terminal of the driving transistor thereby preventing a leakage current from flowing through the light emitting element during the period in which the correction unit operates, and thus preventing the correction voltage from having an error due to the leakage current.
摘要翻译： 在包括开关晶体管的显示装置中，用于消除驱动晶体管的特性变化的影响的校正电压被存储在存储电容器中。 开关晶体管设置在驱动晶体管的一个电流端子和发光元件之间。 开关晶体管在非发光时段期间截止，从而使发光元件与驱动晶体管的一个电流端电气断开，从而防止在校正单元操作期间漏电流流过发光元件 ，从而防止校正电压由于漏电流而产生误差。
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公开(公告)号：US08159424B2
公开(公告)日：2012-04-17
申请号：US12458810
申请日：2009-07-23
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2300/0866 , G09G2320/043
摘要： Disclosed herein is a sampling transistor in an embodiment of the present invention is kept at the on-state with a time width shorter than one horizontal cycle, during the period from the rising of a control pulse supplied from a scanner to a scan line WS to the falling of the control pulse, and samples a video signal from a signal line SL to write the video signal to a hold capacitor. The sampling transistor includes the channel region between the source and the drain and has a sandwich gate structure in which a shield that electrically shields the channel region is disposed on the other side of the channel region. This suppresses change in the threshold voltage of the sampling transistor.
摘要翻译： 这里公开的是，在从扫描仪提供到扫描线WS的控制脉冲的上升期间，本发明的实施例中的采样晶体管保持处于导通状态，时间宽度短于一个水平周期， 控制脉冲的下降，并对来自信号线SL的视频信号进行采样，以将视频信号写入保持电容器。 采样晶体管包括源极和漏极之间的沟道区域，并且具有夹层栅极结构，其中电屏蔽通道区域的屏蔽设置在沟道区域的另一侧。 这抑制了采样晶体管的阈值电压的变化。
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公开(公告)号：US08149185B2
公开(公告)日：2012-04-03
申请号：US10557800
申请日：2004-05-21
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/30 , G09G3/3258 , G09G3/3426 , G09G3/36 , G09G3/3648 , G09G2300/043 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2320/0233 , G09G2320/043 , G09G2320/045 , H05B33/0896
摘要： A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes, wherein a source of a TFT 111 as a drive transistor is connected to an anode of a light emitting element 114, a drain is connected to a power source potential VCC, a capacitor C111 is connected between a gate and source of the TFT 111, and a source potential of the TFT 111 is connected to a fixed potential through a TFT 113 as a switching transistor.
摘要翻译： 一种像素电路，显示装置和驱动像素电路的方法，即使随着发光元件的电流 - 电压特性的改变，也能够随着亮度的降低而使源极跟随器输出不发生劣化，从而能够使源极跟随器电路 n沟道晶体管，并且能够使用n沟道晶体管作为EL驱动晶体管，同时使用电流阳极 - 阴极电极，其中作为驱动晶体管的TFT 111的源极连接到发光元件114的阳极， 漏极连接到电源电位VCC，电容器C111连接在TFT 111的栅极和源极之间，TFT 111的源极电位通过作为开关晶体管的TFT 113连接到固定电位。
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公开(公告)号：US08102388B2
公开(公告)日：2012-01-24
申请号：US12591706
申请日：2009-11-30
IPC分类号： G09G5/00
CPC分类号： G09G3/3233 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2300/0866 , G09G2310/0256 , G09G2320/045
摘要： A display apparatus includes a plurality of light-emitting elements, a driving circuit disposed in each of the plurality of light emitting elements, scanning lines, emission control lines, and data lines. Here, each driving circuit includes a driving transistor supplying current to the corresponding light-emitting element, changes the emission control signal from a first voltage value to a second voltage value to make the light-emitting element be in a non-emission state, and changes the emission control signal from the second voltage value to the first voltage value to correct the threshold voltage of the driving transistor, and the emission control signal has the first voltage value in a period other than a period of the second voltage value for correcting the threshold voltage of the driving transistor in a subsequent non-emission period.
摘要翻译： 显示装置包括多个发光元件，设置在多个发光元件中的每一个中的驱动电路，扫描线，发射控制线和数据线。 这里，每个驱动电路包括向对应的发光元件提供电流的驱动晶体管，将发光控制信号从第一电压值改变为第二电压值，以使发光元件处于非发光状态，并且 将发射控制信号从第二电压值改变为第一电压值以校正驱动晶体管的阈值电压，并且发光控制信号在第二电压值的周期以外的周期内具有第一电压值，用于校正 在随后的非发光周期中驱动晶体管的阈值电压。
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公开(公告)号：US08026874B2
公开(公告)日：2011-09-27
申请号：US12927000
申请日：2010-12-22
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/3208 , G09G3/3258 , G09G5/10 , G09G2300/0819 , G09G2300/0861 , G09G2310/0289 , G09G2320/0214 , G09G2320/0233 , H01L27/1255 , H01L27/322 , H01L27/3248 , H01L27/3258 , H01L27/3262 , H01L27/3265 , H01L27/3276 , H01L51/5228 , H01L51/524 , H01L51/5246
摘要： In a display apparatus including a correction unit and a switching transistor, the correction unit operates in a non-light emission period such that a correction voltage for eliminating an effect of a variation in a characteristic of a driving transistor is stored in a storage capacitor. The switching transistor is disposed between one current terminal of the driving transistor and a light emitting element. The switching transistor turns off during the non-light emission period thereby to electrically disconnect the light emitting element from the one current terminal of the driving transistor thereby preventing a leakage current from flowing through the light emitting element during the period in which the correction unit operates, and thus preventing the correction voltage from having an error due to the leakage current.
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公开(公告)号：US20110187699A1
公开(公告)日：2011-08-04
申请号：US13064677
申请日：2011-04-08
CPC分类号： G09G5/18 , G09G3/3233 , G09G3/3266 , G09G5/10 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2300/0861 , G09G2310/061 , G09G2320/043 , G09G2320/045
摘要： The invention provides a pixel circuit that can cancel the influence of the mobility of a drive transistor. A drive transistor supplies a light-emitting element with an output current dependent upon an input voltage. The light-emitting element emits light with a luminance dependent upon a video signal in response to the output current supplied from the drive transistor. The pixel circuit includes a correction unit that corrects the input voltage held by a capacitive part in order to cancel the dependence of the output current on the carrier mobility.
摘要翻译： 本发明提供一种可以消除驱动晶体管的迁移率的影响的像素电路。 驱动晶体管提供取决于输入电压的输出电流的发光元件。 响应于从驱动晶体管提供的输出电流，发光元件以取决于视频信号的亮度发光。 像素电路包括校正由电容部分保持的输入电压的校正单元，以消除输出电流对载波移动性的依赖性。
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69.发明申请Display device, method of driving the display device, and electronic device 审中-公开显示装置，驱动显示装置的方法以及电子装置公开(公告)号：US20110134340A1
公开(公告)日：2011-06-09
申请号：US12926206
申请日：2010-11-02
CPC分类号： G09G3/3233 , G09G2300/0842 , G09G2320/029 , G09G2330/02 , G09G2330/021 , G09G2330/08
摘要： A display device capable of reducing power consumption, a method of driving the display device, and an electronic device having the display device are provided. A display panel has a display region in which a plurality of display elements are arranged two-dimensionally, each display element including a first organic EL element and a pixel circuit, and a non-display region in which one adjustment pixel including a second organic EL element is disposed. A power-supply voltage adjusting circuit sets a value as a latest power-supply voltage, the value being given by adding voltage variation, which is obtained when a constant current having a magnitude necessary for light emission with white luminance (the highest gray level) of the second organic EL element is applied to the second organic EL element, to an initially set power-supply voltage. A power line drive circuit sequentially applies the set power-supply voltage to power lines.
摘要翻译： 提供能够降低功耗的显示装置，驱动显示装置的方法以及具有显示装置的电子装置。 显示面板具有显示区域，其中多个显示元件被二维布置，每个显示元件包括第一有机EL元件和像素电路，以及非显示区域，其中包括第二有机EL的调整像素 元件被布置。 电源电压调整电路将值设定为最新的电源电压，该值通过将具有白色亮度（最高灰度级）的发光所需的幅度的恒定电流的电压变化相加而得到， 的第二有机EL元件施加到第二有机EL元件，以初始设定的电源电压。 电力线驱动电路将设定的电源电压顺序地施加到电力线。
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公开(公告)号：US07948456B2
公开(公告)日：2011-05-24
申请号：US11338631
申请日：2006-01-25
IPC分类号： G09G3/32
CPC分类号： G09G5/18 , G09G3/3233 , G09G3/3266 , G09G5/10 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2300/0861 , G09G2310/061 , G09G2320/043 , G09G2320/045
摘要： The invention provides a pixel circuit that can cancel the influence of the mobility of a drive transistor. A drive transistor supplies to a light-emitting element, an output current dependent upon an input voltage during a certain emission period. The light-emitting element emits light with a luminance dependent upon a video signal in response to the output current supplied from the drive transistor. The pixel circuit includes a correction unit that corrects the input voltage held by a capacitive part before the emission period or at the beginning of the emission period, in order to cancel the dependence of the output current on the carrier mobility. The correction unit operates during part of a sampling period in response to control signals supplied from scan lines. Specifically, the correction unit extracts the output current from the drive transistor while the video signal is sampled, and negatively feeds back the output current to the capacitive part to thereby correct the input voltage.
摘要翻译： 本发明提供一种可以消除驱动晶体管的迁移率的影响的像素电路。 驱动晶体管供应到发光元件，输出电流取决于在特定发射周期期间的输入电压。 响应于从驱动晶体管提供的输出电流，发光元件以取决于视频信号的亮度发光。 像素电路包括校正单元，其校正在发光周期之前或发光周期开始时由电容部分保持的输入电压，以便消除输出电流对载流子迁移率的依赖性。 校正单元响应于从扫描线提供的控制信号而在采样周期的一部分期间操作。 具体地说，校正单元在视频信号被采样时从驱动晶体管提取输出电流，并将输出电流负反馈到电容部分，从而校正输入电压。
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