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公开(公告)号：US20120139969A1
公开(公告)日：2012-06-07
申请号：US13308620
申请日：2011-12-01
IPC分类号： G09G5/10
CPC分类号： G09G3/3233 , G09G2300/0819 , G09G2300/0833 , G09G2320/0233 , G09G2330/028
摘要： An image display device includes plural pixel circuits each of which includes a light emitting element where an amount of light emission changes corresponding to an amount of current and a drive transistor which controls the amount of current which flows to the light emitting element based on a display signal, a data line drive circuit which supplies a display signal to the plural pixel circuits respectively based on image data, a power source part which outputs a light-emitting potential, and a current amount prediction part which calculates an amount of current which flows to the plural pixel circuits from the power source part based on the image data. The power source part performs a control for suppressing fluctuation of the light-emitting potential based on the calculated amount of current and the outputted light-emitting potential.
摘要翻译： 图像显示装置包括多个像素电路，每个像素电路包括发光元件，其中发光量对应于电流量变化;以及驱动晶体管，其基于显示来控制流向发光元件的电流量 信号，分别基于图像数据向多个像素电路提供显示信号的数据线驱动电路，输出发光电位的电源部，以及计算流过的电流量的电流量预测部 基于图像数据从电源部分的多个像素电路。 电源部基于计算出的电流量和输出的发光电位进行抑制发光电位的波动的控制。
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公开(公告)号：US20120050252A1
公开(公告)日：2012-03-01
申请号：US13207951
申请日：2011-08-11
CPC分类号： G09G3/3233 , G09G2300/0852 , G09G2300/0861 , G09G2310/0251
摘要： An nMOS is used for a drive TFT and a display device is provided without being affected by variations in the threshold voltage of the drive TFT. A display device includes: a field-effect transistor that controls a drive current of a light emitting element; a first switch provided between a source of the field-effect transistor and an anode terminal of the light emitting element; a second switch provided between the source of the field-effect transistor and a signal line; a third switch provided between a drain of the field-effect transistor and a power supply line; a fourth switch provided between the drain and a gate of the field-effect transistor; a capacitor provided between the gate of the field-effect transistor and the anode terminal of the light emitting element; and a fifth switch provided between the anode terminal of the light emitting element and a predetermined voltage supply line.
摘要翻译： nMOS用于驱动TFT，并且提供显示装置而不受驱动TFT的阈值电压的变化的影响。 显示装置包括：场效应晶体管，其控制发光元件的驱动电流; 设置在所述场效应晶体管的源极和所述发光元件的阳极端子之间的第一开关; 设置在场效应晶体管的源极和信号线之间的第二开关; 设置在场效应晶体管的漏极和电源线之间的第三开关; 设置在场效应晶体管的漏极和栅极之间的第四开关; 设置在场效应晶体管的栅极和发光元件的阳极端子之间的电容器; 以及设置在所述发光元件的阳极端子与预定电压供给线之间的第五开关。
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公开(公告)号：US20110012817A1
公开(公告)日：2011-01-20
申请号：US12836699
申请日：2010-07-15
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2300/0861 , G09G2310/0251
摘要： An image display device includes: a first power supply line; a second power supply line; a plurality of pixel circuit; a driving circuit for supplying a data signal and a scanning signal; and a switch unit. Each pixel circuit includes: a driving transistor between the first power supply line and the second power supply line; a light emitting element controlled by the driving transistor; and a storage capacitor for storing the data signal and controlling the driving transistor. The driving circuit causes the storage capacitor to store the data signal and controls an intensity of light emission based on the data signal. The switch unit is provided at one of one end of the first power supply line and one end of the second power supply line to control whether or not to allow a current to flow from the first power supply line to the second power supply line.
摘要翻译： 图像显示装置包括：第一电源线; 第二电源线; 多个像素电路; 用于提供数据信号和扫描信号的驱动电路; 和开关单元。 每个像素电路包括：第一电源线和第二电源线之间的驱动晶体管; 由驱动晶体管控制的发光元件; 以及用于存储数据信号并控制驱动晶体管的存储电容器。 驱动电路使存储电容器存储数据信号，并根据数据信号控制发光强度。 开关单元设置在第一电源线的一端和第二电源线的一端中的一端，以控制是否允许电流从第一电源线流向第二电源线。
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公开(公告)号：US08674912B2
公开(公告)日：2014-03-18
申请号：US12836699
申请日：2010-07-15
IPC分类号： G09G3/30
CPC分类号： G09G3/3233 , G09G2300/0861 , G09G2310/0251
摘要： An image display device includes: a first power supply line; a second power supply line; a plurality of pixel circuit; a driving circuit for supplying a data signal and a scanning signal; and a switch unit. Each pixel circuit includes: a driving transistor between the first power supply line and the second power supply line; a light emitting element controlled by the driving transistor; and a storage capacitor for storing the data signal and controlling the driving transistor. The driving circuit causes the storage capacitor to store the data signal and controls an intensity of light emission based on the data signal. The switch unit is provided at one of one end of the first power supply line and one end of the second power supply line to control whether or not to allow a current to flow from the first power supply line to the second power supply line.
摘要翻译： 图像显示装置包括：第一电源线; 第二电源线; 多个像素电路; 用于提供数据信号和扫描信号的驱动电路; 和开关单元。 每个像素电路包括：第一电源线和第二电源线之间的驱动晶体管; 由驱动晶体管控制的发光元件; 以及用于存储数据信号并控制驱动晶体管的存储电容器。 驱动电路使存储电容器存储数据信号，并根据数据信号控制发光强度。 开关单元设置在第一电源线的一端和第二电源线的一端中的一端，以控制是否允许电流从第一电源线流向第二电源线。
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公开(公告)号：US20100328366A1
公开(公告)日：2010-12-30
申请号：US12825669
申请日：2010-06-29
IPC分类号： G09G5/10
CPC分类号： G09G3/3233 , G09G2300/043 , G09G2300/0819 , G09G2320/0233 , G09G2320/045 , G09G2320/048 , G09G2360/16
摘要： A display device is provided which displays images by emitting light when a reference voltage is applied to pixels. An average picture level calculation unit of a reference voltage calculation unit in a rectangular wave driving unit of a TFT substrate calculates the value of average picture level, and a ΔV calculation unit of a reference voltage calculation unit calculates a correction amount ΔV of the reference voltage based on the average picture level value. The calculated correction amount ΔV is added to a reference voltage and is used as the voltage of a rectangular wave signal that is output to each pixel from a rectangular wave driving unit. In each pixel in which a data signal corresponding to the grayscale value is stored, an organic EL device emits light in accordance with the rectangular wave signal.
摘要翻译： 提供了当将参考电压施加到像素时通过发光来显示图像的显示装置。 TFT基板的矩形波驱动单元中的参考电压计算单元的平均图像电平计算单元计算平均图像电平的值，并且参考电压计算单元的＆Dgr V计算单元计算校正量＆Dgr; V 基于平均图像电平值的参考电压。 将计算出的校正量＆Dgr; V加到参考电压上，并用作从矩形波驱动单元输出到每个像素的矩形波信号的电压。 在存储与灰度值相对应的数据信号的每个像素中，有机EL器件根据矩形波信号发光。
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公开(公告)号：US08743155B2
公开(公告)日：2014-06-03
申请号：US12849136
申请日：2010-08-03
申请人： Masato Ishii , Naruhiko Kasai , Hajime Akimoto
发明人： Masato Ishii , Naruhiko Kasai , Hajime Akimoto
CPC分类号： G09G3/3208 , G09G3/2092 , G09G2310/0275 , G09G2320/0233 , G09G2320/0242 , G09G2320/0271 , G09G2320/0276 , G09G2320/0285 , G09G2320/0295 , G09G2320/043 , G09G2320/0693 , G09G2360/16
摘要： A display device capable of correcting display of deteriorated pixels without causing a nonconstant tonality or improper color balance is provided. The display device includes a display section with plural pixels; signal lines; a data generation circuit; a D/A converter for sequentially converting a tone data to an analog voltage and outputting the analog voltage to the signal lines; a switch circuit for outputting a signal corresponding to the pixel state by switching the signal lines; an A/D converter for sequentially detecting the signal; and a detection circuit for estimating the state of the pixel from the signal. The D/A converter includes an output range setting means for setting an allowed output range of the analog voltage. The display device includes an output correction circuit that controls the output range setting means in accordance with the state of the pixel detected by the detection circuit.
摘要翻译： 提供能够校正恶化像素的显示而不引起不均匀色调或不正确色彩平衡的显示装置。 显示装置包括具有多个像素的显示部分; 信号线 数据生成电路; D / A转换器，用于将音调数据顺序地转换为模拟电压并将模拟电压输出到信号线; 开关电路，用于通过切换信号线来输出与像素状态对应的信号; 用于顺序地检测信号的A / D转换器; 以及检测电路，用于根据该信号估计像素的状态。 D / A转换器包括用于设置模拟电压的允许输出范围的输出范围设置装置。 显示装置包括输出校正电路，其根据由检测电路检测的像素的状态来控制输出范围设定装置。
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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.
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公开(公告)号：US08514153B2
公开(公告)日：2013-08-20
申请号：US12219202
申请日：2008-07-17
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.
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公开(公告)号：US08508562B2
公开(公告)日：2013-08-13
申请号：US13330416
申请日：2011-12-19
IPC分类号： G09G5/10
CPC分类号： G09G3/32 , G09G3/2014 , G09G3/3208 , G09G3/3233 , G09G3/3258 , G09G3/3283 , G09G3/3291 , G09G5/10 , G09G5/18 , G09G2300/0408 , G09G2300/0417 , G09G2300/0426 , G09G2300/0439 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2300/0861 , G09G2300/0876 , G09G2310/027 , G09G2310/062 , G09G2310/065 , G09G2310/066 , G09G2320/0233 , G09G2320/0242 , G09G2320/0257 , G09G2320/0261 , G09G2320/043 , G09G2320/0626
摘要： The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
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10.发明授权公开(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
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。
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