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    Organic electroluminescence display
    2.
    发明授权
    Organic electroluminescence display 有权
    有机电致发光显示

    公开(公告)号：US08477086B2

    公开(公告)日：2013-07-02

    申请号：US12068524

    申请日：2008-02-07

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

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

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3233 ,  G09G2300/0809 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/0673

    摘要： In an organic EL display, correction is made for a difference in screen luminance between the case of measuring characteristics of OLED elements, and the case of not measuring the characteristics of the OLED elements. A data line for feeding image data items, and a detection line for measuring the characteristics of the OLED elements are connected to respective pixels. Detection of the characteristics of the OLED elements is executed by utilizing a specified period of a frame period. Because an image-displaying period is limited in a frame where measurement of the characteristics of the OLED element 11 is executed, the luminance undergoes deterioration. In order to prevent the deterioration of the luminance, an analog-to-digital converter ADC causes γ characteristic of the OLED elements in the frame where measurement of the characteristics of 11 is executed to be varied by the agency of a signal from a timing controller Tcon to the analog-to-digital converter ADC, thereby increasing luminance intensity of light emission of the OLED elements.

    摘要翻译： 在有机EL显示器中，对于OLED元件的测量特性的情况和不测量OLED元件的特性的情况之间的屏幕亮度差进行校正。 用于馈送图像数据的数据线和用于测量OLED元件的特性的检测线连接到各个像素。 通过利用帧周期的指定周期来执行OLED元件的特性的检测。 由于在执行OLED元件11的特性的测量的框架中限制图像显示周期，因此亮度劣化。 为了防止亮度的劣化，模数转换器ADC引起在执行11的特性测量的OLED元件的伽马特性通过来自定时控制器的信号的代理来改变 Tcon到模数转换器ADC，从而增加OLED元件的发光亮度强度。

    Display device
    3.
    发明授权
    Display device 有权
    显示设备

    公开(公告)号：US08264481B2

    公开(公告)日：2012-09-11

    申请号：US12216670

    申请日：2008-07-09

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

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

    IPC分类号： G09G5/10

    CPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G2300/0861 ,  G09G2320/0295 ,  G09G2320/041

    摘要： To implement brightness change of pixels due to variations in environmental temperatures with low electric power, the display device includes a display part having a display area arrayed with plural pixels, a display scanning circuit and a signal driving circuit for driving the plural pixels, and a power circuit that supplies a current for illuminating each of the plural pixels with brightness corresponding to a display signal from the signal driving circuit; and a detection unit that includes: a monitor element for driving a constant current that detects environmental temperatures; and plural constant current sources, detects a voltage value relating to the luminous intensity of the pixels by the monitor element to generate a signal to control an output voltage of the power circuit, and changes over a constant current source of the monitor element according to a voltage value detected in the detection unit.

    摘要翻译： 为了实现由于低功率环境温度变化引起的像素的亮度变化，显示装置包括具有排列有多个像素的显示区域的显示部分，显示扫描电路和用于驱动多个像素的信号驱动电路，以及 电源电路，其提供用于对与所述信号驱动电路的显示信号相对应的亮度照亮所述多个像素中的每一个的电流; 以及检测单元，其包括：用于驱动检测环境温度的恒定电流的监视元件; 并且多个恒定电流源通过监视元件检测与像素的发光强度有关的电压值，以产生用于控制电源电路的输出电压的信号，并且根据监视元件的监视元件的恒定电流源进行切换 在检测单元中检测到电压值。

    Display device
    4.
    发明授权
    Display device 有权
    显示设备

    公开(公告)号：US08264432B2

    公开(公告)日：2012-09-11

    申请号：US12496783

    申请日：2009-07-02

    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： G09G3/3233 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

    摘要： An image display device comprises a unit which divides one line into a plurality of blocks (blocks A, B, and C) in a horizontal direction and detects in parallel, a unit which collectively detects a plurality of lines (lines A and B) in a vertical direction in parallel. The unit detects a pixel state of a pixel of the block (for example, block A) and a pixel state of the same pixel as an adjacent block (for example, block B), and corrects a variation between the detection result of the block and the detection result of the adjacent block. The unit detects a pixel state of a pixel through the line (for example, line A) and a pixel state of the same pixel through a different line (for example, line B), and corrects a variation between the detection result of the line and the detection result of the different line.

    摘要翻译： 图像显示装置包括将水平方向上的一行划分为多个块（块A，B，C）的单元，并行地检测共同检测多条线（A，B线）的单元 垂直方向并行。 该单元检测块的像素（例如，块A）的像素状态和与相邻块（例如，块B）相同的像素的像素状态，并且校正块的检测结果之间的变化 和相邻块的检测结果。 该单元通过线（例如，线A）和相同像素的像素状态通过不同的线（例如，线B）检测像素的像素状态，并校正线的检测结果之间的变化 和不同行的检测结果。

    Image display device
    5.
    发明授权
    Image display device 有权
    图像显示装置

    公开(公告)号：US08194064B2

    公开(公告)日：2012-06-05

    申请号：US12292727

    申请日：2008-11-25

    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： G06F3/038

    CPC分类号： G09G3/3291 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/066

    摘要： A shift in the frame of a moving image in an image display device using self-luminous element is made hard to see. A data line driving circuit is provided with a triangular wave generating circuit for generating a number of types of triangular waves having different phases and waveforms, and gradation voltage-triangular wave switching circuit for selecting and switching one of the number of types of triangular waves generated by the triangular wave generating circuit for each signal line. One horizontal period is divided into a signal write-in period and a triangular wave period, so that the signal voltage and triangular wave are outputted during the signal write-in period and the triangular wave period, respectively.

    摘要翻译： 使用自发光元件的图像显示装置中的运动图像的帧的偏移变得难以看出。 数据线驱动电路设置有三角波产生电路，用于产生具有不同相位和波形的多种类型的三角波，以及灰度电压三角波切换电路，用于选择和切换产生的三角波的类型的数量之一 由每个信号线的三角波产生电路。 一个水平周期分为信号写入周期和三角波周期，分别在信号写入周期和三角波周期期间输出信号电压和三角波。

    Display device mounted with self-luminous element
    6.
    发明授权
    Display device mounted with self-luminous element 有权
    显示装置安装有自发光元件

    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。

    Image Display Device
    7.
    发明申请
    Image Display Device 审中-公开
    图像显示设备

    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。

    Imaging device and method of correction pixel deterioration thereof
    8.
    发明申请
    Imaging device and method of correction pixel deterioration thereof 有权
    成像装置及其像素劣化校正方法

    公开(公告)号：US20090027314A1

    公开(公告)日：2009-01-29

    申请号：US12219202

    申请日：2008-07-17

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

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

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0693

    摘要： In a display mode, a signal driving circuit (DAC) transmits image signals to the pixels selected by a scanning circuit for display and first switches of switch units. Then, a power supply circuit supplies a current corresponding to the transmitted signal to the pixels. Then, organic EL elements provided in the pixels are driven to emit light, thereby displaying an image. In order to correct the deterioration of the organic EL elements, first, a constant current flows from a current source to the organic EL elements of the pixels selected by a scanning circuit for detection and second switches and a voltage corresponding to the constant current applied to the organic EL element is detected. The detected voltage is input to an AD converter through a buffer amplifier, and the AD converter converts the voltage into a digital value, and transmits the digital value to a signal correction control unit. When the organic EL element deteriorates, the detected digital value varies. Therefore, the signal correction control unit corrects the signal from the signal driving circuit, thereby correcting the deterioration of the organic EL element.

    摘要翻译： 在显示模式中，信号驱动电路（DAC）将图像信号发送到由用于显示的扫描电路选择的像素和开关单元的第一开关。 然后，电源电路将与发送信号相对应的电流提供给像素。 然后，驱动设置在像素中的有机EL元件发光，从而显示图像。 为了校正有机EL元件的劣化，首先，将恒定电流从电流源流向由用于检测的扫描电路和第二开关选择的像素的有机EL元件和与施加到 检测有机EL元件。 检测到的电压通过缓冲放大器输入到AD转换器，AD转换器将电压转换为数字值，并将数字值发送到信号校正控制单元。 当有机EL元件劣化时，检测到的数字值变化。 因此，信号校正控制单元校正来自信号驱动电路的信号，从而校正有机EL元件的劣化。