公开(公告)号：US20070057873A1

公开(公告)日：2007-03-15

申请号：US10557800

申请日：2004-05-21

申请人： Katsuhide Uchino ,  Junichi Yamashita ,  Tetsuro Yamamoto

发明人： Katsuhide Uchino ,  Junichi Yamashita ,  Tetsuro Yamamoto

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。

公开(公告)号：US20060061560A1

公开(公告)日：2006-03-23

申请号：US11226320

申请日：2005-09-15

申请人： Junichi Yamashita ,  Katsuhide Uchino ,  Tetsuro Yamamoto ,  Naobumi Toyomura

发明人： Junichi Yamashita ,  Katsuhide Uchino ,  Tetsuro Yamamoto ,  Naobumi Toyomura

IPC分类号： G09G5/00

CPC分类号： G09G3/3266 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/043

摘要： The invention provides a pixel circuit that allows simultaneous correction of both influence of the threshold voltage of a drive transistor and influence of the mobility of the drive transistor. Correction means is connected to a drive transistor and a capacitance part, and operates during a correction period preceding to a sampling period. The correction period is separated into a reset period and a detection period. During the reset period, the correction means energizes the capacitance part to reset the potential of the capacitance part. During the detection period, the correction means stops the energization and detects the potential difference arising between the source and gate of the drive transistor during the period when a transient current flows through the drive transistor. The capacitance part holds the potential corresponding to the detected potential difference. The held potential includes both a potential component for reducing the influence of the threshold voltage on the output current of the drive transistor, and a potential component for reducing the influence of the carrier mobility thereon.

公开(公告)号：US08896502B2

公开(公告)日：2014-11-25

申请号：US12149867

申请日：2008-05-09

申请人： Naobumi Toyomura ,  Katsuhide Uchino ,  Tetsuro Yamamoto

发明人： Naobumi Toyomura ,  Katsuhide Uchino ,  Tetsuro Yamamoto

IPC分类号： G09G3/30 ,  G09G3/32

CPC分类号： G09G3/3291 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2320/0223

摘要： A display device includes a display unit, a horizontal drive circuit, and a vertical drive circuit, the display unit including pixels in a matrix formation, as well as respective signal lines and scan lines via which the drive circuits drive the pixels. Each pixel includes a light-emitting element, a hold capacitor, a write transistor, and a drive transistor. Mobility fluctuations in the drive transistor are compensated for by successively setting the voltage of the signal line to an intermediate voltage and to a tone voltage. In addition, the intermediate voltage is varied in accordance with the tone voltage as well as with the distance from the input terminal of a write signal to a respective pixel. The device thereby compensates for mobility fluctuations in the drive transistor and prevents shading due to irregularities in the waveform of the write signal.

摘要翻译： 显示装置包括显示单元，水平驱动电路和垂直驱动电路，所述显示单元包括矩阵结构中的像素以及驱动电路驱动像素的相应信号线和扫描线。 每个像素包括发光元件，保持电容器，写入晶体管和驱动晶体管。 通过将信号线的电压连续地设定为中间电压和音调电压来补偿驱动晶体管的移动性波动。 此外，中间电压根据音调电压以及与写入信号的输入端子到相应像素的距离而变化。 因此，该装置补偿驱动晶体管中的迁移率波动，并且防止由于写入信号的波形中的不规则引起的阴影。

公开(公告)号：US08884852B2

公开(公告)日：2014-11-11

申请号：US12662175

申请日：2010-04-05

申请人： Tetsuro Yamamoto ,  Katsuhide Uchino

发明人： Tetsuro Yamamoto ,  Katsuhide Uchino

IPC分类号： G09G3/30 ,  G09G5/00 ,  G06F3/038 ,  G09G5/10 ,  G09G3/32

CPC分类号： G09G3/3241 ,  G09G3/3233 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0866 ,  G09G2310/0251 ,  G09G2310/0262

摘要： Disclosed herein is a display device including: a pixel circuit for generating a signal value for display by synthesizing signal values input within one horizontal period, and making display at a gradation corresponding to the signal value for display; a signal line disposed in a form of a column on a pixel array where the pixel circuit is arranged in a form of a matrix; a scanning line disposed in a form of a row on the pixel array; a signal line driving section configured to output signal values as a signal value to be supplied to each pixel circuit to the signal line within one horizontal period; and a scanning line driving section configured to sequentially introduce the signal values within one horizontal period, the signal values being generated in the signal line, into the pixel circuit in each row by driving the scanning line.

摘要翻译： 这里公开了一种显示装置，包括：像素电路，用于通过合成在一个水平周期内输入的信号值来产生用于显示的信号值，并且以与用于显示的信号值相对应的灰度显示; 在像素阵列上以列的形式设置的信号线，其中像素电路以矩阵的形式布置; 在像素阵列上以行的形式布置的扫描线; 信号线驱动部，被配置为在一个水平周期内将信号值作为要提供给每个像素电路的信号值输出到所述信号线; 以及扫描线驱动部，被配置为通过驱动扫描线，将在信号线中生成的信号值的一个水平周期内的信号值顺序地引入到每行的像素电路中。

公开(公告)号：US08854283B2

公开(公告)日：2014-10-07

申请号：US12591288

申请日：2009-11-16

申请人： Tetsuro Yamamoto ,  Katsuhide Uchino

发明人： Tetsuro Yamamoto ,  Katsuhide Uchino

IPC分类号： G09G3/30 ,  G06F3/038 ,  G09G5/00 ,  G09G5/10 ,  G09G3/32 ,  H01L27/32

CPC分类号： G09G3/3225 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2320/02 ,  H01L27/3223 ,  H01L27/326 ,  H01L27/3265 ,  H01L27/3276

摘要： In a display apparatus, a plurality of pixels are disposed in an array. Each pixel includes: an electro-optical element; a write transistor that writes a picture signal; a drive transistor that drives the electro-optical element according to the picture signal written by the write transistor; a hold capacitor, connected between the gate and source electrodes of the drive transistor, that holds the picture signal written by the write transistor; and an auxiliary capacitor, connected between the anode of the electro-optical element and a fixed potential node. Each auxiliary capacitor is formed straddling the boundary between specific pixel pairs adjacent in the pixel layout direction on a pixel row. An island metal pattern is formed between pixel pairs other than the specific pixel pairs, at a site corresponding to that of the auxiliary capacitor.

摘要翻译： 在显示装置中，将多个像素配置成阵列。 每个像素包括：电光元件; 写入晶体管，写入图像信号; 驱动晶体管，其根据写入晶体管写入的图像信号驱动电光元件; 保持电容器，连接在驱动晶体管的栅极和源极之间，其保持由写入晶体管写入的图像信号; 以及连接在电光元件的阳极和固定电位节点之间的辅助电容器。 每个辅助电容器跨越像素行上的像素布局方向上相邻的特定像素对之间的边界形成。 在对应于辅助电容器的位置处，在特定像素对之外的像素对之间形成岛状金属图案。

公开(公告)号：US08823692B2

公开(公告)日：2014-09-02

申请号：US12591523

申请日：2009-11-23

申请人： Tetsuro Yamamoto ,  Katsuhide Uchino ,  Naobumi Toyomura

发明人： Tetsuro Yamamoto ,  Katsuhide Uchino ,  Naobumi Toyomura

IPC分类号： G06F3/038 ,  G09G5/00 ,  G09G3/10 ,  G09G3/32

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/021

摘要： A display device includes: a pixel array unit in which pixels are arranged in a matrix shape, each of the pixels including an electro-optic element, a writing transistor that writes a video signal, a driving transistor that drives the electro-optic element according to the video signal written by the writing transistor, and a storage capacitor that is connected between a gate electrode and a source electrode of the driving transistor and stores the video signal written by the writing transistor; and a power supply line that supplies power supply potential to the pixels, the power supply potential selectively taking first potential for supplying an electric current to the driving transistor and second potential for applying reverse bias to the electro-optic element.

摘要翻译： 显示装置包括：像素阵列单元，其中像素以矩阵形状布置，每个像素包括电光元件，写入视频信号的写入晶体管，驱动电光元件的驱动晶体管，根据 涉及由写入晶体管写入的视频信号，以及存储电容器，其连接在驱动晶体管的栅极电极和源极之间，并存储由写入晶体管写入的视频信号; 以及向像素供给电源电位的电源线，所述电源电位选择性地将第一电位用于向所述驱动晶体管提供电流，以及用于向所述电光元件施加反向偏压的第二电位。

公开(公告)号：US08823607B2

公开(公告)日：2014-09-02

申请号：US11702165

申请日：2007-02-05

申请人： Katsuhide Uchino ,  Junichi Yamashita ,  Tetsuro Yamamoto

发明人： Katsuhide Uchino ,  Junichi Yamashita ,  Tetsuro Yamamoto

IPC分类号： G09G3/30 ,  G09G3/20 ,  G09G3/32

CPC分类号： G09G3/3258 ,  G09G3/20 ,  G09G3/2011 ,  G09G3/30 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0417 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0216 ,  G09G2310/0256 ,  G09G2310/0267 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/0633 ,  G09G2330/021

摘要： A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. The pixel circuit includes an electro-optical element, a holding capacitor, a sampling transistor, and a drive transistor. The sampling transistor samples and supplies an input signal from a signal line so as to be held into the holding capacitor. The driving transistor drives the electro-optical element with current in response to the held signal potential. The threshold voltage of the drive transistor is imparted to the holding capacitor in order to cancel an influence of the threshold voltage.

摘要翻译： 具有补偿电光元件的特性变化和晶体管的阈值电压变化的功能的像素电路由减少数量的元件元件形成。 像素电路包括电光元件，保持电容器，采样晶体管和驱动晶体管。 采样晶体管对来自信号线的输入信号进行采样并将其保持在保持电容器中。 驱动晶体管响应于保持的信号电位而以电流驱动电光元件。 为了消除阈值电压的影响，驱动晶体管的阈值电压被施加到保持电容器。

公开(公告)号：US08477087B2

公开(公告)日：2013-07-02

申请号：US12453908

申请日：2009-05-27

申请人： Tetsuro Yamamoto ,  Katsuhide Uchino

发明人： Tetsuro Yamamoto ,  Katsuhide Uchino

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2310/06 ,  G09G2320/043 ,  G09G2330/028

摘要： A common power line shared by all the pixels allows threshold correction to be performed simultaneously on all the pixels. Video signal lines are set to a second reference potential higher than a reference potential, followed by multi-step threshold correction and video signal writing which are performed in a line sequential manner. Performing the threshold correction immediately before the video signal writing ensures shorter time from the threshold correction to the video signal writing. This suppresses leak currents, providing improved image quality.

摘要翻译： 由所有像素共享的公共电力线允许在所有像素上同时执行阈值校正。 视频信号线被设置为高于参考电位的第二参考电位，随后是以行顺序方式执行的多步骤阈值校正和视频信号写入。 在视频信号写入之前执行阈值校正确保了从阈值校正到视频信号写入的更短的时间。 这样可以抑制漏电流，从而提高图像质量。

公开(公告)号：US08432389B2

公开(公告)日：2013-04-30

申请号：US12382238

申请日：2009-03-11

申请人： Tetsuro Yamamoto ,  Katsuhide Uchino

发明人： Tetsuro Yamamoto ,  Katsuhide Uchino

IPC分类号： G06F3/038

CPC分类号： G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/02

摘要： The present invention provides a panel, including: a plurality of pixel circuits disposed in rows and columns and each including a light emitting element for emitting light in response to driving current, a sampling transistor for sampling an image signal, a driving transistor for supplying the driving current to the light emitting element, and a storage capacitor for storing a predetermined potential; and a power supplying section configured to supply a power supply voltage of a high potential or a low potential at a time to all of the pixel circuits arranged in rows and columns; the power supplying section setting the power supply voltage to be supplied to the low potential, with which the gate-source voltage of the driving transistor becomes higher than a threshold voltage of the driving transistor, by Q times within a one-field period, Q being equal to or greater than 2.

摘要翻译： 本发明提供了一种面板，包括：多个像素电路，其设置成行和列，每个包括响应于驱动电流发光的发光元件，用于对图像信号进行采样的采样晶体管，用于提供 驱动电流到发光元件，以及存储电容器，用于存储预定电位; 以及电力供给部，被配置为向排列成行和列的所有像素电路一次提供高电位或低电位的电源电压; 所述电力供给部将供给所述驱动晶体管的栅极 - 源极间电压的所述低电位的电源电压设定为比所述驱动用晶体管的阈值电压高一倍的时间内的Q次，Q 等于或大于2。

公开(公告)号：US20130050067A1

公开(公告)日：2013-02-28

申请号：US13588495

申请日：2012-08-17

申请人： Junichi Yamashita ,  Yusuke Onoyama ,  Tetsuo Minami ,  Naobumi Toyomura ,  Tetsuro Yamamoto ,  Katsuhide Uchino

发明人： Junichi Yamashita ,  Yusuke Onoyama ,  Tetsuo Minami ,  Naobumi Toyomura ,  Tetsuro Yamamoto ,  Katsuhide Uchino

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/30 ,  G09G3/3225 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  H01L27/0688 ,  H01L27/3225 ,  H01L27/3244 ,  H01L27/3248 ,  H01L27/3255 ,  H01L27/3262 ,  H01L27/3276

摘要： A display device includes: a plurality of light-emitting elements, each light-emitting element having a light-emitting unit and a driving circuit for driving the light-emitting unit. The driving circuit at least includes (A) a drive transistor having source/drain regions, a channel forming region, and a gate electrode, (B) a video signal write transistor having source/drain regions, a channel forming region, and a gate electrode, and (C) a capacitive unit. In the drive transistor, (A-1) one of the source/drain regions is connected to the corresponding current supply line, (A-2) the other region of the source/drain regions is connected to the light-emitting unit and connected to one end of the capacitive unit, and forms a second node, and (A-3) the gate electrode is connected to the other region of the source/drain regions of the video signal write transistor and connected to the other end of the capacitive unit, and forms a first node.

摘要翻译： 显示装置包括：多个发光元件，每个发光元件具有发光单元和用于驱动发光单元的驱动电路。 驱动电路至少包括（A）具有源极/漏极区域的驱动晶体管，沟道形成区域和栅极电极，（B）具有源极/漏极区域的视频信号写入晶体管，沟道形成区域和栅极 电极，（C）电容单元。 在驱动晶体管中，（A-1）源极/漏极区域之一连接到相应的电流源线（A-2），源极/漏极区域的另一个区域连接到发光单元并连接 并且形成第二节点，并且（A-3）栅电极连接到视频信号写入晶体管的源极/漏极区域的另一个区域，并连接到电容器的另一端 单元，并形成第一个节点。