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公开(公告)号：US20080024136A1
公开(公告)日：2008-01-31
申请号：US11775263
申请日：2007-07-10
申请人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
发明人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
IPC分类号： G01R31/44
CPC分类号： G09G3/3233 , G09G3/3291 , G09G2300/0842 , G09G2310/0251 , G09G2320/0285 , G09G2320/0295 , G09G2320/04
摘要： Pixel current flowing in each pixel of a display panel is efficiently measured. The display panel 20 includes pixels arranged in a matrix, and performs display by writing pixel data in these pixels. By turning on one pixel alone within a screen for a period of a limited number of lines within one frame, a plurality of pixels are sequentially turned on within one frame. By measuring the current used for performing display within the period during which one pixel alone is turned on, pixel current that flows in that pixel is measured.
摘要翻译： 有效地测量在显示面板的各像素中流动的像素电流。 显示面板20包括排列成矩阵的像素，并且通过在这些像素中写入像素数据来进行显示。 通过在一个帧内的有限数量的行的周期内在屏幕内单独打开一个像素，在一个帧内顺序地打开多个像素。 通过测量仅在一个像素单独打开的时间段内用于执行显示的电流，测量在该像素中流动的像素电流。
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公开(公告)号：US07164400B2
公开(公告)日：2007-01-16
申请号：US10767288
申请日：2004-01-28
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G3/3291 , G09G2300/0809 , G09G2300/0842 , G09G2310/027 , G09G2320/0238 , G09G2320/029 , G09G2320/04 , G09G2320/041 , G09G2320/0626 , G09G2360/144 , G09G2360/16
摘要： To appropriately adjust luminance and a black level even when characteristics of an organic EL display element should be changed due to an environmental change or heat self-generation, to display a stable image. A current detector detects a level of a total panel current flowing in an organic EL panel. The detected level is subjected to A/D conversion before being supplied to an adder. Meanwhile, a video signal is supplied to a current calculator 24 to be converted into data corresponding to the level of a total panel current, before being supplied to the adder. The adder then compares an average total panel current level, estimated based on a video signal, and an actual total panel current level, to obtain a difference so that a black level for image data to be supplied to the panel is adjusted according to the difference.
摘要翻译： 即使在有机EL显示元件的特性由于环境变化或热自发而变化的情况下也能适当地调节亮度和黑色电平，以显示稳定的图像。 电流检测器检测在有机EL面板中流动的总面板电流的电平。 检测到的电平在被提供给加法器之前经受A / D转换。 同时，在被提供给加法器之前，将视频信号提供给电流计算器24，以转换成对应于总面板电流的电平的数据。 然后，加法器比较基于视频信号估计的平均总面板电流电平和实际总面板电流电平，以获得差值，以便根据差异来调整要提供给面板的图像数据的黑电平 。
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公开(公告)号：US20070008251A1
公开(公告)日：2007-01-11
申请号：US11424245
申请日：2006-06-15
申请人： Makoto Kohno , Kouichi Onomura , Seiichi Mizukoshi
发明人： Makoto Kohno , Kouichi Onomura , Seiichi Mizukoshi
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G5/06 , G09G2300/0842 , G09G2320/0233 , G09G2320/0242 , G09G2320/0285 , G09G2320/029 , G09G2320/043 , G09G2360/147
摘要： Nonuniformity in an organic EL display device is effectively detected. All display pixels of an organic EL panel are turned on and the display is photographed with a digital camera. A computer performs image processing of the photographed image to detect an area in which unevenness exists. Then, a V-I curve of each pixel in the area is measured to calculate necessary correction values. The calculated correction values are stored in a memory for use in correcting a signal input to the organic EL panel.
摘要翻译： 有效地检测有机EL显示装置的不均匀性。 打开有机EL面板的所有显示像素，并用数码相机拍摄显示器。 计算机执行拍摄图像的图像处理以检测存在不均匀的区域。 然后，测量该区域中每个像素的V-I曲线以计算必要的校正值。 所计算的校正值被存储在用于校正输入到有机EL面板的信号的存储器中。
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公开(公告)号：US08217860B2
公开(公告)日：2012-07-10
申请号：US11865843
申请日：2007-10-02
申请人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
发明人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
IPC分类号： G09G3/30
CPC分类号： G09G3/006 , G09G3/3225 , G09G3/3233 , G09G2300/0842 , G09G2320/0233 , G09G2320/0285 , G09G2320/029 , G09G2320/0295 , G09G2320/043 , G09G2330/06
摘要： A method of measuring a panel current in an active matrix organic electroluminescence display panel, wherein when a current flowing through a display panel when one or a plurality of pixels are caused to emit light is measured, a flow-in current flowing into the display panel from a side of a high voltage and a flow-out current flowing out from the display panel toward a side of a low voltage are simultaneously measured, and a value of a panel current is determined using both obtained measurement results.
摘要翻译： 一种测量有源矩阵有机电致发光显示面板中的面板电流的方法，其中当测量当一个或多个像素发光时流过显示面板的电流，流入显示面板的流入电流 同时测量从显示面板朝向低压侧流出的高电压侧和流出电流，并使用两者获得的测量结果来确定面板电流的值。
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公开(公告)号：US08207957B2
公开(公告)日：2012-06-26
申请号：US12417916
申请日：2009-04-03
IPC分类号： G09G5/00
CPC分类号： G09G3/3233 , G09G3/3291 , G09G2300/0842 , G09G2300/0866 , G09G2320/0276
摘要： An electroluminescent display device having a first and a second power supply; a respective power supply line for each row, wherein each power supply line is placed along a horizontal direction and is connected to the respective first electrodes of the driving TFTs of the pixels in the corresponding row; a plurality of switches, each connected to one or more power supply lines, for selectively connecting the corresponding one or more power supply lines to either the first or the second power supply; a gate driver for selecting a gate line; and a selecting circuit for controlling the plurality of switches, wherein the selecting circuit causes the power supply line corresponding to the selected gate line to be connected to the first power supply, and the one or more power supply lines not corresponding to the selected gate line to be connected to the second power supply.
摘要翻译： 一种具有第一和第二电源的电致发光显示装置; 每行的相应电源线，其中每个电源线沿着水平方向放置，并且连接到相应行中的像素的驱动TFT的各自的第一电极; 多个开关，各自连接到一个或多个电源线，用于选择性地将相应的一个或多个电源线连接到第一或第二电源; 用于选择栅极线的栅极驱动器; 以及用于控制所述多个开关的选择电路，其中所述选择电路使与所选择的栅极线相对应的电源线连接到所述第一电源，并且所述一个或多个电源线不对应于所选择的栅极线 连接到第二电源。
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公开(公告)号：US07834825B2
公开(公告)日：2010-11-16
申请号：US10599029
申请日：2005-03-17
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2300/0842 , G09G2320/0285 , G09G2320/029 , G09G2320/043
摘要： An organic EL display apparatus including in each display pixel an organic EL element. A drive transistor supplies a drive current that depends on brightness data and having the display pixels arranged in a matrix form. The display includes a correction gain storage unit for storing display pixel positions and a correction gain for correcting the slope of the brightness-data-based drive current of the drive transistors in the display pixels; and a correction unit for correcting pixel-by-pixel brightness data depending on the pixel position using the correction gain stored in the correction gain storage unit into brightness data for the pixel to generate corrected brightness data, each of the display pixels is displayed by driving its drive transistor in response to the data generated by the correction gain storage unit and the correction unit and supplying the corresponding organic EL element with the drive current.
摘要翻译： 一种在每个显示像素中包括有机EL元件的有机EL显示装置。 驱动晶体管提供取决于亮度数据并具有以矩阵形式布置的显示像素的驱动电流。 显示器包括用于存储显示像素位置的校正增益存储单元和用于校正显示像素中的驱动晶体管的基于亮度数据的驱动电流的斜率的校正增益; 以及校正单元，用于使用存储在校正增益存储单元中的校正增益将根据像素位置的逐像素亮度数据校正为像素的亮度数据以产生校正亮度数据，每个显示像素通过驱动显示 其驱动晶体管响应于由校正增益存储单元和校正单元产生的数据，并向对应的有机EL元件提供驱动电流。
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公开(公告)号：US20100171774A1
公开(公告)日：2010-07-08
申请号：US12664741
申请日：2008-07-17
申请人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
发明人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
CPC分类号： G09G3/3275 , G09G5/06 , G09G2320/0238 , G09G2320/0285 , G09G2320/043 , G09G2320/0673 , G09G2330/025 , G09G2360/16
摘要： A display device is disclosed having a plurality of pixels arranged in a matrix, in which a current driven light-emitting element is provided for each pixel, and current supplied to each light-emitting element is controlled based on input image data for each pixel for achieving display, the display device, includes a correction circuit for performing calculations based on the input image data and correction data, and correcting non-uniform luminance caused by variations in display characteristics for each pixel to produce correction data; a panel current detection circuit for detecting a panel current, which is the total current to be supplied to each pixel; and a modification circuit for modifying the correction data in response to a voltage drop due to the panel current to reduce errors in the correction data.
摘要翻译： 公开了一种显示装置，其具有排列成矩阵状的多个像素，其中为每个像素提供电流驱动发光元件，并且基于每个像素的输入图像数据控制提供给每个发光元件的电流， 实现显示，显示装置包括用于基于输入图像数据和校正数据执行计算的校正电路，以及校正由每个像素的显示特性的变化引起的不均匀亮度，以产生校正数据; 用于检测面板电流的面板电流检测电路，其是要提供给每个像素的总电流; 以及修改电路，用于响应于由于面板电流引起的电压降来修正校正数据，以减少校正数据中的错误。
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公开(公告)号：US20090256854A1
公开(公告)日：2009-10-15
申请号：US12418743
申请日：2009-04-06
CPC分类号： G09G3/3233 , G09G2320/0285 , G09G2320/0295
摘要： Displaying an image with unevenness correction by measuring Vgs-Id characteristics of the transistors in a subset of pixels; approximating each characteristic using an equation of the form Id=(a(Vgs−b))c; calculating a value c′ using the approximations; measuring the characteristics of the remaining pixels; approximating each of those characteristics by an equation of the same form, using c′ as the power for all of the approximations, calculating corrected image signals for each pixel using the respective approximations of the corresponding pixels of the display device to correct for unevenness; and applying the corrected image signals to the corresponding pixels of the display device to display a corresponding image with unevenness correction.
摘要翻译： 通过测量像素子集中的晶体管的Vgs-Id特性来显示具有不均匀性校正的图像; 使用形式Id =（a（Vgs-b））c的等式近似每个特征; 使用近似计算值c'; 测量剩余像素的特性; 使用c'作为所有近似的功率，通过相同形式的方程近似这些特征中的每一个，使用显示装置的相应像素的各个近似来计算每个像素的校正图像信号，以校正不均匀性; 以及将校正后的图像信号应用到显示装置的相应像素，以显示具有不均匀校正的相应图像。
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公开(公告)号：US20070268218A1
公开(公告)日：2007-11-22
申请号：US11744242
申请日：2007-05-04
申请人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
发明人： Seiichi Mizukoshi , Makoto Kohno , Kouichi Onomura
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2320/043
摘要： An organic EL display device, including a display panel having pixels arranged in a matrix state, each pixel including an organic EL element and being provided with a driving thin film transistor that corresponds to each organic EL element, and which controls light emission therefrom; a driving power supply that supplies the display panel with a power supply voltage for driving each organic EL element; and voltage changing section for changing the power supply voltage supplied from the driving power supply to the display panel based on one or both of average characteristics of the driving thin film transistor and average characteristics of the organic EL element in the display panel.
摘要翻译： 一种有机EL显示装置，包括具有以矩阵状排列的像素的显示面板，每个像素包括有机EL元件，并且具有对应于每个有机EL元件的驱动薄膜晶体管，并且控制其发光; 驱动电源，为显示面板提供用于驱动每个有机EL元件的电源电压; 以及电压变化部，其基于驱动薄膜晶体管的平均特性和显示面板中的有机EL元件的平均特性的一个或两个来改变从驱动电源向显示面板供给的电源电压。
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公开(公告)号：US20070210996A1
公开(公告)日：2007-09-13
申请号：US10599029
申请日：2005-03-17
IPC分类号： G09G3/32
CPC分类号： G09G3/3233 , G09G2300/0842 , G09G2320/0285 , G09G2320/029 , G09G2320/043
摘要： An organic EL display apparatus including in each display pixel an organic EL element. A drive transistor supplies a drive current that depends on brightness data and having the display pixels arranged in a matrix form. The display includes a correction gain storage unit for storing display pixel positions and a correction gain for correcting the slope of the brightness-data-based drive current of the drive transistors in the display pixels; and a correction unit for correcting pixel-by-pixel brightness data depending on the pixel position using the correction gain stored in the correction gain storage unit into brightness data for the pixel to generate corrected brightness data, each of the display pixels is displayed by driving its drive transistor in response to the data generated by the correction gain storage unit and the correction unit and supplying the corresponding organic EL element with the drive current.
摘要翻译： 一种在每个显示像素中包括有机EL元件的有机EL显示装置。 驱动晶体管提供取决于亮度数据并具有以矩阵形式布置的显示像素的驱动电流。 显示器包括用于存储显示像素位置的校正增益存储单元和用于校正显示像素中的驱动晶体管的基于亮度数据的驱动电流的斜率的校正增益; 以及校正单元，用于使用存储在校正增益存储单元中的校正增益将根据像素位置的逐像素亮度数据校正为像素的亮度数据以产生校正亮度数据，每个显示像素通过驱动显示 其驱动晶体管响应于由校正增益存储单元和校正单元产生的数据，并向对应的有机EL元件提供驱动电流。
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