公开(公告)号：US07982697B2

公开(公告)日：2011-07-19

申请号：US11871469

申请日：2007-10-12

申请人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G3/30

CPC分类号： G09G3/3291 ,  G09G3/3258 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0259 ,  G09G2310/066 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/048

摘要： A display device includes a plurality of pixels, each of which has a drive transistor, an organic EL element and a writing capacitor, in which the drive transistor controls a luminous time period of the organic EL element by a writing signal voltage and a sweep signal so that the writing signal voltage is written into the writing capacitor independent from a characteristic variation caused by a deterioration due to the temperature and time lapse of using the organic EL element, thereby making a luminous time period long when the deterioration occurs with increase of an internal resistance of the organic EL element, and compensating a luminance degradation caused by the deterioration to solve a burn-in state of fixed pattern.

摘要翻译： 显示装置包括多个像素，每个像素具有驱动晶体管，有机EL元件和写入电容器，其中驱动晶体管通过写入信号电压和扫描信号控制有机EL元件的发光时间周期 使得写入信号电压被独立于由于使用有机EL元件的温度和时间流逝导致的劣化引起的特性变化而被写入写入电容器中，从而当发生劣化时使发光时间段长 有机EL元件的内部电阻，并且补偿由劣化引起的亮度劣化以解决固定图案的老化状态。

公开(公告)号：US20090303162A1

公开(公告)日：2009-12-10

申请号：US12477155

申请日：2009-06-03

申请人： Tohru Kohno ,  Hajime Akimoto ,  Naruhiko Kasai ,  Masato Ishii

发明人： Tohru Kohno ,  Hajime Akimoto ,  Naruhiko Kasai ,  Masato Ishii

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G2300/043 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2320/045 ,  G09G2320/046

摘要： Provided is an image display device in which deterioration of a self-light-emitting element within a pixel is corrected accurately. A driver transistor provided in each pixel to drive the self-light-emitting element is driven in a saturation region. A voltage detection unit detects a voltage across the self-light-emitting element of each pixel, which is observed when a constant current is supplied to the self-light-emitting element. When the voltage detected by the voltage detection unit exceeds a threshold voltage, one of a reference voltage and a power supply voltage is controlled to keep an operation region of the driver transistor to the saturation region in every one of a plurality of the pixels of the image display device.

摘要翻译： 提供了一种图像显示装置，其中像素内的自发光元件的劣化被精确地校正。 设置在每个像素中驱动自发光元件的驱动晶体管在饱和区域被驱动。 电压检测单元检测在向自发光元件提供恒定电流时观察到的每个像素的自发光元件两端的电压。 当由电压检测单元检测到的电压超过阈值电压时，控制参考电压和电源电压之一，以将驱动晶体管的操作区域保持在多个像素中的每个像素中的饱和区域 图像显示装置。

公开(公告)号：US08610646B2

公开(公告)日：2013-12-17

申请号：US12318852

申请日：2009-01-09

申请人： Tohru Kohno ,  Hajime Akimoto ,  Naruhiko Kasai ,  Masato Ishii

发明人： Tohru Kohno ,  Hajime Akimoto ,  Naruhiko Kasai ,  Masato Ishii

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0814 ,  G09G2320/0295 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/046

摘要： An organic electroluminescence display device is provided having a display section including a plurality of pixels arranged in a matrix; and a detection section for detecting a luminance characteristic of an OLED element in each of the pixels. The detection section includes a first path for allowing a detected characteristic value to pass therethrough and a second path for attenuating the detected characteristic value. A first switch is provided for the first path whereas a second switch is provided for the second path, the second switch being opened when the first switch is closed. The detected characteristic value having passed through any one of the first path and the second path is input to a same analog-to-digital converter to be converted into a digital quantity.

公开(公告)号：US08330755B2

公开(公告)日：2012-12-11

申请号：US12292801

申请日：2008-11-26

申请人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G3/20 ,  G06G5/00

CPC分类号： G09G3/3225 ,  G09G2300/0842 ,  G09G2300/089 ,  G09G2320/043

摘要： An image display with high brightness where a long time can be secured for light emission of self-luminous elements can be implemented using only line memories.The period for the writing in of a display voltage (period for writing in of data) continues for a number of lines (three lines), and the reset pulse becomes of a “high” state. Subsequently, operation for three lines is carried out collectively during a triangular wave period (period for writing in of a triangular wave voltage), and only the light emission controlling pulse becomes of a “high” state. During the period for the writing in of a triangular wave voltage, the writing in of a triangular wave voltage from the second time onward is rewriting of a triangular wave voltage, and thus, the period for rewriting the display voltage (dotted line portion) becomes unnecessary, and a longer period for light emission, where the light emission controlling pulse becomes of a “high” state, can be secured.

摘要翻译： 可以仅使用行存储器来实现具有高亮度的长时间可以确保自发光元件的发光的图像显示器。 用于写入显示电压的周期（数据写入周期）持续多行（三行），并且复位脉冲变为高状态。 随后，在三角波周期（写入三角波电压的周期）中集中进行三线的操作，并且只有发光控制脉冲变为高状态。 在写入三角波电压的期间中，从第二次开始写入三角波电压是三角波电压的重写，因此，重写显示电压（虚线部分）的周期成为 可以确保发光控制脉冲变为高状态的发光的不必要的和更长的周期。

公开(公告)号：US20090244043A1

公开(公告)日：2009-10-01

申请号：US12353281

申请日：2009-01-14

申请人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G5/00

CPC分类号： G09G3/3233 ,  G09G3/3426 ,  G09G2300/0842 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2330/028

摘要： To provide an image display device having a circuit for solving burning phenomenon without increasing the size of the circuit. An image display device is provided having a display unit formed using display devices, a signal line for inputting a display signal voltage to the display unit, and a display control unit for controlling the display signal voltage, the image display device comprising a detection power source, a switch for causing a current of the detection power source to flow to the display device, a detection circuit for detecting the current, and a detection information storage circuit for storing information, and compensating the display signal voltage, using the information, wherein using a first reference voltage, and current detection is carried out, the detection circuit feeds back the current detected to set a second reference voltage different from the first reference voltage, and carries out current detection.

摘要翻译： 提供具有用于解决燃烧现象的电路的图像显示装置，而不增加电路的尺寸。 提供一种图像显示装置，具有使用显示装置形成的显示单元，用于向显示单元输入显示信号电压的信号线以及用于控制显示信号电压的显示控制单元，该图像显示装置包括检测电源 ，用于使检测电源的电流流向显示装置的开关，用于检测电流的检测电路，以及用于存储信息的检测信息存储电路，以及使用该信息补偿显示信号电压，其中使用 执行第一参考电压和电流检测，检测电路反馈检测到的电流以设置不同于第一参考电压的第二参考电压，并执行电流检测。

公开(公告)号：US20090243973A1

公开(公告)日：2009-10-01

申请号：US12416249

申请日：2009-04-01

申请人： Masato Ishii ,  Naruhiko Kasai ,  Tohru Kohno ,  Hajime Akimoto

发明人： Masato Ishii ,  Naruhiko Kasai ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G3/20

CPC分类号： G09G3/3275 ,  G09G2310/0218 ,  G09G2310/04 ,  G09G2320/0233 ,  G09G2330/028

摘要： Provided is a display device including: a display section including a plurality of pixels which emit light in an amount varied depending on an amount of current; signal lines used to input a display signal voltage to the pixels; a switch circuit which switches between the signal lines to output signals corresponding to pixel states of the pixels, the pixel states being obtained through a supply of a power source to the pixels; and an A/D converter which sequentially detects the signals corresponding to the pixel states of the pixels along a horizontal line of the display section, in which the A/D converter includes a circuit for changing a reference voltage of the A/D converter, and is structured so as to perform block-by-block detection of signals corresponding to pixel states of pixels in each of a plurality of blocks into which the pixels in the horizontal line are divided.

摘要翻译： 提供一种显示装置，包括：显示部，包括发射量根据电流量而变化的光的多个像素; 用于向像素输入显示信号电压的信号线; 开关电路，其在所述信号线之间切换以输出与所述像素的像素状态相对应的信号，所述像素状态通过向所述像素供给电源而获得; 以及A / D转换器，其依次检测与显示部分的水平线相对应的像素的像素状态的信号，其中A / D转换器包括用于改变A / D转换器的参考电压的电路， 并且被构造成对与划分水平线中的像素的多个块中的每个块中的像素的像素状态相对应的信号进行逐块检测。

公开(公告)号：US20080100543A1

公开(公告)日：2008-05-01

申请号：US11871469

申请日：2007-10-12

申请人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G3/30

CPC分类号： G09G3/3291 ,  G09G3/3258 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0259 ,  G09G2310/066 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/048

摘要： A display device includes a plurality of pixels, each of which has a drive transistor, an organic EL element and a writing capacitor, in which the drive transistor controls a luminous time period of the organic EL element by a writing signal voltage and a sweep signal so that the writing signal voltage is written into the writing capacitor independent from a characteristic variation caused by a deterioration due to the temperature and time lapse of using the organic EL element, thereby making a luminous time period long when the deterioration occurs with increase of an internal resistance of the organic EL element, and compensating a luminance degradation caused by the deterioration to solve a burn-in state of fixed pattern.

摘要翻译： 显示装置包括多个像素，每个像素具有驱动晶体管，有机EL元件和写入电容器，其中驱动晶体管通过写入信号电压和扫描信号控制有机EL元件的发光时间周期 使得写入信号电压被独立于由于使用有机EL元件的温度和时间流逝导致的劣化引起的特性变化而被写入写入电容器中，从而当发生劣化时使发光时间段长 有机EL元件的内部电阻，并且补偿由劣化引起的亮度劣化以解决固定图案的老化状态。

公开(公告)号：US20110032282A1

公开(公告)日：2011-02-10

申请号：US12849111

申请日：2010-08-03

申请人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko Kasai ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G5/10 ,  G09G3/30

CPC分类号： G09G3/3291 ,  G09G3/3258 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0205 ,  G09G2310/066 ,  G09G2320/043

摘要： A display device is capable of improving display quality. A data line drive circuit outputs a display signal voltage to data lines in a first period. Each pixel holds the display signal voltage with reference to a voltage determined based on characteristics of the drive transistor. In a second period, a control voltage for controlling the drive transistor is output to the data lines. The drive transistor generates a drive current in accordance with the control voltage and the held signal voltage so as to allow the self-luminous element to emit light. After the second period, a third period is provided in which a voltage signal for setting a control terminal of the drive transistor to have a given correction voltage is output to the data lines. The first period follows the third period.

摘要翻译： 显示装置能够提高显示质量。 数据线驱动电路在第一周期中向数据线输出显示信号电压。 参考基于驱动晶体管的特性确定的电压，每个像素保持显示信号电压。 在第二时段中，用于控制驱动晶体管的控制电压被输出到数据线。 驱动晶体管根据控制电压和保持的信号电压产生驱动电流，以便允许自发光元件发光。 在第二时段之后，提供第三期间，其中将用于将驱动晶体管的控制端子设置为具有给定校正电压的电压信号被输出到数据线。 第一期是第三期。

公开(公告)号：US20100188318A1

公开(公告)日：2010-07-29

申请号：US12691761

申请日：2010-01-22

申请人： Masato Ishii ,  Naruhiko Kasai ,  Tohru Kohno ,  Hajime Akimoto

发明人： Masato Ishii ,  Naruhiko Kasai ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G3/30

CPC分类号： G09G3/3283 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2330/028

摘要： A display device includes: a display section including a plurality of pixels which emit light in an amount varied depending on an amount of current; signal lines for inputting a display signal voltage to the plurality of pixels; a switch circuit for switching between the signal lines to output signals corresponding to pixel states of the plurality of pixels, the pixel states being obtained through a supply of a detection-use power source to the plurality of pixels; and an A/D conversion section which includes a circuit for changing a reference voltage, and which sequentially detects signals corresponding to pixel states of pixels in each of a plurality of blocks which are obtained by dividing pixels in a horizontal line of the display section. The deteriorated pixels, which is accompanied by an in-plane gradient and fluctuations of the display section, are compensated without increasing a scale of a detection circuit.

摘要翻译： 显示装置包括：显示部，包括发射量根据电流量而变化的光的多个像素; 用于向多个像素输入显示信号电压的信号线; 用于在信号线之间切换以输出与多个像素的像素状态对应的信号的开关电路，通过向多个像素提供检测用电源获得像素状态; 以及A / D转换部分，其包括用于改变参考电压的电路，并且其顺序地检测与通过划分显示部分的水平线中的像素而获得的多个块中的每一个中的像素的像素状态相对应的信号。 在不增加检测电路的规模的情况下补偿伴随有平面内梯度和显示部分的波动的恶化像素。

公开(公告)号：US20100085349A1

公开(公告)日：2010-04-08

申请号：US12571536

申请日：2009-10-01

申请人： Naruhiko KASAI ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

发明人： Naruhiko KASAI ,  Masato Ishii ,  Tohru Kohno ,  Hajime Akimoto

IPC分类号： G09G5/00

CPC分类号： G09G3/3275 ,  G09G3/3685 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/088 ,  G09G2310/0262 ,  G09G2310/066 ,  G09G2320/0223 ,  G09G2320/043 ,  G09G2360/18

摘要： Provided is a display device capable of freely setting correction based on a state of a luminance gradient in a self-emission display device for eliminating the luminance gradient. The display device includes: a data line drive circuit for outputting emission control signals for controlling light emission of display elements during a retrace period during which display signal voltages are not output; and an emission power supply circuit for supplying power supply voltages for the light emission of the display elements to power supply lines from at least one of external sides of a display region corresponding to a group including the display elements. The data line drive circuit generates and outputs the emission control signals different among data lines.

摘要翻译： 提供一种能够根据自发光显示装置中的亮度梯度的状态自由地设定校正以消除亮度梯度的显示装置。 显示装置包括：数据线驱动电路，用于在不输出显示信号电压的回扫期间输出用于控制显示元件的发光的发射控制信号; 以及发射电源电路，用于将显示元件的发光的电源电压从对应于包括显示元件的组的显示区域的至少一个的外侧提供给电源线。 数据线驱动电路产生并输出不同数据线之间的发射控制信号。