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公开(公告)号：US20190057649A1
公开(公告)日：2019-02-21
申请号：US15770526
申请日：2016-11-25
IPC分类号： G09G3/3233 , G09G3/3266 , G09G3/3275 , G01B7/16
摘要： An organic EL panel 10 is a bendable display panel including a plurality of pixel circuits 60 each having a light emitting element and a drive element. A data line drive circuit 15 performs, by driving data lines, an operation of writing a voltage to a control terminal of the drive element and an operation of measuring a current flowing through the drive element for the pixel circuits 60 selected by a scanning line drive circuit 14. A bending detection unit 90 detects a bending state of the organic EL panel 10 based on a measurement result of the current flowing through the drive element. A correction unit 80 corrects a video signal VS1 based on the detected bending state. With this, the bending state of a screen is detected and a change in brightness or color when the screen is bent is prevented.
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公开(公告)号：US20170162101A1
公开(公告)日：2017-06-08
申请号：US15039098
申请日：2014-08-28
发明人： Masanori OHARA , Noboru NOGUCHI , Noritaka KISHI
IPC分类号： G09G3/20 , G09G3/3258 , H01L51/50 , G09G3/3266 , H01L27/32 , G09G3/3291 , G09G3/3233
CPC分类号： G09G3/2018 , G09G3/3233 , G09G3/3258 , G09G3/3266 , G09G3/3291 , G09G2300/0814 , G09G2300/0819 , G09G2300/0842 , G09G2310/0262 , G09G2310/0286 , G09G2310/0289 , G09G2310/08 , G09G2320/0295 , G09G2320/043 , G09G2320/045 , G09G2320/0626 , H01L27/3211 , H01L27/3244 , H01L51/5036
摘要： When a clock signal pulse number and a compensation-target-line address indicating a compensation-target row match, the following control is carried out with a time point being a starting point of a current measurement period, the time point being one horizontal scanning period after a time point of the match. At a current measurement period starting point and ending point, only the potential of the one of the clock signals applied to a unit circuit corresponding to the compensation-target row is changed. Throughout the current measurement period, the clock operation of the clock signals is stopped. A monitor enable signal, that is applied to a control terminal of an output control transistor for controlling active signal output to a monitor control line, is only set to a high level during the current measurement period.
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公开(公告)号：US20160210892A1
公开(公告)日：2016-07-21
申请号：US14912274
申请日：2014-07-22
发明人： MASANORI OHARA , Noboru NOGUCHI , Noritaka KISHI
IPC分类号： G09G3/20 , G09G3/3233
CPC分类号： G09G3/2022 , G09G3/2003 , G09G3/3233 , G09G3/3258 , G09G3/3266 , G09G2300/0443 , G09G2300/0452 , G09G2300/0804 , G09G2310/0235 , G09G2310/0286 , G09G2310/0289 , G09G2310/0291 , G09G2310/061 , G09G2310/08 , G09G2320/064 , G09G2330/021
摘要： A picture-frame size of a display device including self light-emitting type display elements which are driven by a current is reduced over conventional devices. Transistors for controlling supply of a light-emission enable signal outputted from an emission driver to emission lines are provided between the emission driver and the emission lines. In such a configuration, based on selection signals provided to the transistors, one of the transistors is brought into an on state in each subframe, and each of the transistors is brought into an on state once during one frame period.
摘要翻译： 包括由电流驱动的自发光型显示元件的显示装置的画框尺寸比常规装置减小。 在发射驱动器和发射线之间设置用于控制从发射驱动器输出到发射线的发光使能信号的供给的晶体管。 在这样的结构中，基于提供给晶体管的选择信号，在每个子帧中使晶体管中的一个处于导通状态，并且在一个帧周期期间每个晶体管进入导通状态。
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公开(公告)号：US20180061328A1
公开(公告)日：2018-03-01
申请号：US15559883
申请日：2016-03-18
发明人： Noritaka KISHI , Hiroyuki FURUKAWA , Katsuya OTOI , Kazuyoshi YOSHIYAMA , Tamotsu SAKAI , Naoko GOTOH
IPC分类号： G09G3/3291 , G09G3/3233 , G09G3/3266 , G01R19/165
CPC分类号： G09G3/3291 , G01R19/16576 , G09G3/3225 , G09G3/3233 , G09G3/3266 , G09G3/3275 , G09G2310/0289 , G09G2310/0291 , G09G2310/08 , G09G2320/0233
摘要： In a current measurement period of a pixel circuit (20), a measurement voltage is applied to a non-inverting input terminal of an operational amplifier (31), switches (35, 36) turn on, and a switch (37) turns off. Next, the switch (36) turns off, and a capacitor (32) is charged with charge of a current flowing through the pixel circuit (20). Next, the switch (35) turns off, the switch (37) turns on, a constant current flows through a current source (33), and a voltage of a second terminal (terminal connected to an output terminal of the operational amplifier (31)) of the capacitor (32) decreases. A voltage comparator (42) and a counter (43) measure the current flowing through the pixel circuit (20) by measuring time until a voltage of the second terminal of the capacitor reaches a voltage Vcomp. A video signal VS1 is corrected based on a current measurement result. With this, it is possible to compensate for capacitance variation of a capacitance in a current measurement circuit and perform high image quality display.
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公开(公告)号：US20170186373A1
公开(公告)日：2017-06-29
申请号：US15316921
申请日：2015-06-05
发明人： Daichi NISHIKAWA , Yasuyuki OGAWA , Kaoru YAMAMOTO , Noritaka KISHI , Shigetsugu YAMANAKA , Masanori OHARA , Noboru NOGUCHI
IPC分类号： G09G3/3258 , G09G3/3291 , G11C19/28 , G09G3/3266
CPC分类号： G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G3/3291 , G09G2300/0842 , G09G2310/0286 , G09G2310/065 , G09G2310/08 , G09G2320/0285 , G09G2320/0295 , G09G2320/045 , G09G2320/048 , G09G2330/023 , G09G2330/12 , G11C19/28
摘要： In a current measurement period set in a pause period, a display device of the present invention applies measurement voltages to data lines (S1 to Sm) and measures currents outputted to monitoring lines (M1 to Mm) from m pixel circuits (18), and then applies data voltages generated corresponding to video signals to the data lines (S1 to Sm).
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公开(公告)号：US20160104422A1
公开(公告)日：2016-04-14
申请号：US14892620
申请日：2014-07-29
CPC分类号： G09G3/3233 , G09G3/006 , G09G2300/0404 , G09G2300/0842 , G09G2310/021 , G09G2310/0218 , G09G2310/08 , G09G2320/0295 , G09G2320/043 , G09G2320/045
摘要： In a display device having a pixel circuit including an electro-optical element in which brightness is controlled by a current, and including a drive transistor for controlling a current to be supplied to the electro-optical element, a drive method therefor includes: a noise measurement step of measuring noise; characteristic detection steps of detecting characteristics of the drive transistor and the electro-optical element; a correction data update step of updating correction data, which serves for correcting a video signal, based on detection results in the characteristic detection step; and a video signal correction step of correcting the video signal based on the correction data. When noise with a standard value or more is detected in the noise measurement step, processing of the correction data update step is not performed.
摘要翻译： 在具有像素电路的显示装置中，具有通过电流控制亮度的电光元件的像素电路，并且包括用于控制向电光元件供给的电流的驱动晶体管，其驱动方法包括：噪声 测量噪音的测量步骤; 检测驱动晶体管和电光元件的特性的特征检测步骤; 校正数据更新步骤，根据特征检测步骤中的检测结果更新用于校正视频信号的校正数据; 以及基于校正数据校正视频信号的视频信号校正步骤。 当在噪声测量步骤中检测到具有标准值或更高的噪声时，不执行校正数据更新步骤的处理。
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公开(公告)号：US20150317952A1
公开(公告)日：2015-11-05
申请号：US14654114
申请日：2013-12-27
发明人： Masanori OHARA , Noboru NOGUCHI , Noritaka KISHI
CPC分类号： G09G5/18 , G09G3/2003 , G09G3/3233 , G09G3/3266 , G09G3/3291 , G09G5/10 , G09G2300/0452 , G09G2300/0804 , G09G2310/0235 , G09G2310/0286 , G09G2320/0261
摘要： An embodiment of the present invention realizes a display device equipped with a self light-emitting type display element driven by a current, by using a pixel circuit having a configuration simpler than a conventional configuration. A pixel circuit includes a driving transistor (T1), an input transistor (T2), a capacitor (Cst), and three organic EL elements (OLED(R), OLED(G), and OLED(B)). Cathode terminals of the organic EL elements (OLED(R), OLED(G), and OLED(B)) are respectively connected to low-level power supply lines (ELVSS(R), ELVSS(G), and ELVSS(B)). In such a configuration, in each sub-frame, only a low-level power supply voltage (ELVSS) corresponding to the sub-frame is set to a relatively low level, and the other low-level power supply voltages (ELVSS) are set to relatively high levels.
摘要翻译： 本发明的实施例通过使用具有比常规配置简单的配置的像素电路来实现配备有由电流驱动的自发光型显示元件的显示装置。 像素电路包括驱动晶体管（T1），输入晶体管（T2），电容器（Cst）和三个有机EL元件（OLED，OLED（G）和OLED（B））。 有机EL元件（OLED，OLED（G）和OLED（B））的阴极端子分别连接到低电平电源线（ELVSS（R），ELVSS（G））和ELVSS（B） ）。 在这样的结构中，在各子帧中，仅将与子帧对应的低电平电源电压（ELVSS）设定为较低电平，设定其他低电平电源电压（ELVSS） 到相对较高的水平。
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公开(公告)号：US20180342208A1
公开(公告)日：2018-11-29
申请号：US16052669
申请日：2018-08-02
发明人： Daichi NISHIKAWA , Yasuyuki OGAWA , Kaoru YAMAMOTO , Noritaka KISHI , Shigetsugu YAMANAKA , Masanori OHARA , Noboru NOGUCHI
IPC分类号： G09G3/3258 , G09G3/3266 , G11C19/28 , G09G3/3233 , G09G3/3291
CPC分类号： G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G3/3291 , G09G2300/0842 , G09G2310/0286 , G09G2310/065 , G09G2310/08 , G09G2320/0285 , G09G2320/0295 , G09G2320/045 , G09G2320/048 , G09G2330/023 , G09G2330/12 , G11C19/28
摘要： In a current measurement period set in a pause period, a display device of the present invention applies measurement voltages to data lines (S1 to Sm) and measures currents outputted to monitoring lines (M1 to Mm) from m pixel circuits (18), and then applies data voltages generated corresponding to video signals to the data lines (S1 to Sm).
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公开(公告)号：US20170316741A1
公开(公告)日：2017-11-02
申请号：US15639242
申请日：2017-06-30
IPC分类号： G09G3/3258 , G09G3/3225 , G09G3/3291 , G09G3/3275 , G09G3/3283
CPC分类号： G09G3/3258 , G09G3/3225 , G09G3/3275 , G09G3/3283 , G09G3/3291 , G09G2300/0819 , G09G2300/0852 , G09G2300/0861 , G09G2300/0866 , G09G2310/0259 , G09G2320/0242
摘要： In a pixel circuit, TFTs are connected and driven such that a threshold voltage Vth of a TFT, which is a drive transistor, can be held in a threshold holding capacitor having a capacitance value c1, voltages, including a data potential Vdata representing an image to be displayed, can be held in a data holding capacitor having a capacitance value c2, and charges in the data holding capacitor and the threshold holding capacitor are redistributed at the time of light emission. As a result, a potential obtained by multiplying the data potential Vdata by c1/(c1+c2) is provided to a gate potential of the TFT.
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公开(公告)号：US20170200415A1
公开(公告)日：2017-07-13
申请号：US15326080
申请日：2015-07-08
发明人： Noboru NOGUCHI , Masanori OHARA , Noritaka KISHI
IPC分类号： G09G3/3258 , H01L51/50 , H01L27/32 , H01L27/12 , G09G3/3266 , G09G3/34
CPC分类号： G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G3/3413 , G09G2300/0814 , G09G2300/0842 , G09G2300/0861 , G09G2310/08 , G09G2320/0242 , G09G2340/0407 , H01L27/1225 , H01L27/3211 , H01L27/3213 , H01L27/3276 , H01L51/5012
摘要： When a display mode is a high-resolution mode, image display is performed by time division driving. When the display mode is a low-resolution mode, image display is performed by defining j pixel circuits arranged continuously in a direction in which scanning signal lines extend as one group, bringing only one organic EL element into a light-emitting state in each of the pixel circuits in a frame period, and bringing organic EL elements having respective light emission colors different from one another into a light-emitting state in the j pixel circuits included in each group in the frame period. Pixel circuits in a display unit are configured such that the intervals of organic EL elements which go into a light-emitting state in the frame period when in the low-resolution mode are equalized regarding a direction in which the scanning signal lines extend.
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