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公开(公告)号:US20180240411A1
公开(公告)日:2018-08-23
申请号:US15959765
申请日:2018-04-23
发明人: Toshiyuki KASAI , Takeshi NOMURA
IPC分类号: G09G3/3291 , G09G3/3233
CPC分类号: G09G3/3291 , G09G3/3233 , G09G2300/0814 , G09G2300/0838 , G09G2300/0861 , G09G2300/0876 , G09G2310/0256 , G09G2310/0275 , G09G2310/0289 , G09G2310/0297 , G09G2320/045
摘要: An electro-optical device is provided with a plurality of data lines, a plurality of potential lines supplied with a predetermined potential, a driving transistor controlling a current level according to the voltage between the gate and the source, a first storage capacitor which holds the voltage between the gate and a source of the driving transistor, and a light-emitting element. One data line among the plurality of data lines and one potential line among the plurality of potential lines are arranged to be adjacent to each other, and a second storage capacitor holding the potential of the one data line is formed by the one data line and the one potential line.
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公开(公告)号:US10037735B2
公开(公告)日:2018-07-31
申请号:US14080209
申请日:2013-11-14
申请人: E INK CORPORATION
发明人: Karl R. Amundson
CPC分类号: G09G3/3446 , G02B26/005 , G02F1/1676 , G09G3/344 , G09G2300/08 , G09G2300/0876
摘要: An active matrix electro-optic display (100) includes capacitor electrodes (110, 112) associated with the pixel electrodes (106, 108) so that the pixel electrode and its associated capacitor electrode form a capacitor. The display (100) also includes switching means (120) having one position in which each capacitor electrode (110, 112) is electrically connected to the light-transmissive front electrode (102) of the display (100) and a second position in which each capacitor electrode (110, 112) is electrically connected to a voltage source having a voltage independent of the voltage on the light-transmissive electrode.
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公开(公告)号:US20180197462A1
公开(公告)日:2018-07-12
申请号:US15031498
申请日:2015-10-19
发明人: Kazuyoshi NAGAYAMA , Song SONG
IPC分类号: G09G3/325
CPC分类号: G09G3/325 , G09G3/3233 , G09G3/3291 , G09G2300/0819 , G09G2300/0852 , G09G2300/0861 , G09G2300/0866 , G09G2300/0876 , G09G2320/0233 , G09G2320/045 , G09G2330/021 , G09G2330/08
摘要: The present disclosure provides an OLED pixel circuit, a display device and a control method. The OLED pixel circuit includes: an OLED; a driving transistor; a first switching unit; a second switching unit; a compensation circuit connected to the gate electrode of the driving transistor and configured to maintain a voltage of the gate electrode of the driving transistor during a light-emitting period, so as to enable a current flowing through the OLED to be irrelevant to a threshold voltage Vth of the driving transistor; and a reference signal generation module configured to generate, based on a current threshold voltage of the driving transistor, a reference signal to be used by the compensation circuit, wherein a voltage of the reference signal and the threshold voltage meet at least one of validation conditions capable of validating the compensation circuit.
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公开(公告)号:US20180174503A1
公开(公告)日:2018-06-21
申请号:US15840927
申请日:2017-12-13
申请人: LG DISPLAY CO., LTD.
发明人: WooSung SHIM , JunHo BONG
CPC分类号: G09G3/2092 , G09G3/3266 , G09G2300/0408 , G09G2300/0426 , G09G2300/0871 , G09G2300/0876 , G09G2310/0281 , G09G2310/0286 , G09G2310/0289 , G09G2310/08 , G11C19/184 , G11C19/28 , H03K17/56
摘要: The gate driving circuit includes a shift register including a plurality of stages. An n-th stage among the plurality of stages includes: a pull-up switching element outputting a first clock to an output node in accordance with a voltage in a Q node, a pull-down switching element outputting a gate low voltage VGL to the output node in accordance with a voltage in a QB node, and a logic unit inverting and outputting a voltage in the Q node and a voltage in the QB node. The logic unit includes a first switching element including a gate to which a fourth clock is input and being between a start voltage line which supplies a start voltage and the Q node, a second switching element including a gate connected to the Q node and being connected to the QB node, a third switching element being between the second switching element and a gate low voltage line which supplies the gate low voltage, a fourth switching element including a gate to which a third clock is input and being between a gate high voltage line which supplies a gate high voltage and the QB node, a fifth switching element including a gate connected to the QB node and being between the Q node and the gate low voltage line, a first capacitor between the Q node and the output node, and a second capacitor between the gate low voltage line and the gate of the pull-down switching element.
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公开(公告)号:US20180107035A1
公开(公告)日:2018-04-19
申请号:US15325446
申请日:2016-12-14
发明人: Mengmeng ZHANG , Shouzhen YUE
IPC分类号: G02F1/1343 , H01L27/12 , G02F1/1362 , H01L27/32 , H01L33/38
CPC分类号: G02F1/1343 , G02F1/134309 , G02F1/136213 , G02F2001/134345 , G09G3/3655 , G09G3/3659 , G09G2300/0426 , G09G2300/0465 , G09G2300/0876 , G09G2320/0242 , H01L27/124 , H01L27/3248 , H01L33/387
摘要: A pixel structure and a liquid crystal display panel are provided. The pixel structure includes a first common electrode, a second common electrode set, a plurality of pixel units formed by a plurality of scanning lines crossing a plurality of data lines. Each of the pixel units corresponding to one of the scanning lines and one of the data lines. Each of the pixel units includes a main electrode, a secondary electrode, and a thin-film transistor. The main electrode corresponds to the first common electrode. The secondary electrode corresponds to the second common electrode set.
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公开(公告)号:US09892679B2
公开(公告)日:2018-02-13
申请号:US15262174
申请日:2016-09-12
发明人: Hajime Kimura
IPC分类号: H01L27/14 , H01L29/04 , G09G3/3225 , G09G3/3233 , G09G3/3266 , H01L27/12 , G09G3/3275 , H01L27/32 , H01L51/52
CPC分类号: G09G3/3225 , G09G3/3233 , G09G3/3266 , G09G3/3275 , G09G2300/0809 , G09G2300/0814 , G09G2300/0819 , G09G2300/0842 , G09G2300/0852 , G09G2300/0861 , G09G2300/0876 , G09G2310/0251 , G09G2310/027 , G09G2320/0204 , G09G2320/0233 , G09G2320/0252 , G09G2320/043 , G09G2320/045 , G09G2380/02 , H01L27/124 , H01L27/1255 , H01L27/3244 , H01L27/3262 , H01L27/3265 , H01L27/3295 , H01L51/5237 , H01L51/524 , H01L51/5253 , H01L51/5259
摘要: A voltage equal to the threshold value of a TFT (106) is held in capacitor unit (109). When a video signal is inputted from a source signal line, the voltage held in the capacitor unit is added thereto and a resultant signal is applied to a gate electrode of the TFT (106). Even when a threshold value is varied for each pixel, each threshold value is held in the capacitor unit (109) for each pixel. Thus, the influence of a variation in threshold value can be eliminated. Further, holding of the threshold value is conducted by only the capacitor unit (109) and a charge does not move at writing of a video signal so that a voltage between both electrodes is not changed. Thus, it is not influenced by a variation in capacitance value.
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公开(公告)号:US09852703B2
公开(公告)日:2017-12-26
申请号:US12976431
申请日:2010-12-22
申请人: Hiroyuki Miyake
发明人: Hiroyuki Miyake
IPC分类号: G09G3/36
CPC分类号: G09G3/3614 , G02F1/13306 , G02F1/136213 , G02F1/1368 , G09G3/3611 , G09G3/3655 , G09G5/18 , G09G2300/0404 , G09G2300/0408 , G09G2300/0426 , G09G2300/0876 , G09G2320/10
摘要: An object is to suppress deterioration of a displayed image even when a refresh rate is reduced in displaying a still image. A liquid crystal display device includes a pixel transistor electrically connected to a pixel electrode, and a capacitor having one electrode electrically connected to the pixel electrode and the other electrode electrically connected to a capacitor line. The pixel transistor is turned on and a voltage based on an image signal is supplied to the pixel electrode, and then, the pixel transistor is turned off so that a holding period during which the pixel electrode holds the voltage based on the image signal starts. A holding signal corresponding to change of the voltage based on the image signal in the pixel electrode in the holding period is supplied to the capacitor line so that a potential of the pixel electrode is constant.
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公开(公告)号:US09842540B2
公开(公告)日:2017-12-12
申请号:US15299511
申请日:2016-10-21
发明人: Hajime Kimura
IPC分类号: G09G5/00 , G09G3/3233
CPC分类号: G09G3/3233 , G09G3/22 , G09G2300/0426 , G09G2300/0819 , G09G2300/0852 , G09G2300/0876 , G09G2310/0251 , G09G2320/0233 , G09G2320/045 , G09G2330/021
摘要: A driving method of a semiconductor device for compensating variation in threshold voltage and mobility of a transistor is provided. A driving method of a semiconductor device including a transistor and a capacitor electrically connected to a gate of the transistor includes a first period where voltage corresponding to threshold voltage of the transistor is held in the capacitor, a second period where a total voltage of video signal voltage and threshold voltage is held in the capacitor holding the threshold voltage, and a third period where charge held in the capacitor in accordance with the total voltage of the video signal voltage and the threshold voltage in the second period is discharged through the transistor.
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公开(公告)号:US09842537B2
公开(公告)日:2017-12-12
申请号:US14991900
申请日:2016-01-08
发明人: Jae Keun Lim , Jong Hee Kim , Chong Chul Chai
IPC分类号: G09G3/32 , G09G3/3225
CPC分类号: G09G3/3225 , G09G2300/0876 , G09G2310/0216 , G09G2310/08 , G09G2320/045
摘要: A display device includes: a display unit including a plurality of pixels, each of the pixels including: an OLED; and a driving transistor to supply current to an anode of the OLED according to a voltage applied to a gate of the driving transistor and a power supply voltage; a scan driver to supply scan signals to the pixels; an initialization driver to supply initializing signals to the pixels; a data driver to supply data signals to the pixels; light emission drivers to supply first and second light emission signals to the pixels; and a power supply to supply the power supply voltage and an initialization voltage to the pixels, wherein the initialization voltage is supplied to the anode during a first period, and the power supply voltage corresponding to a threshold voltage of the driving transistor is supplied to the gate during a first sub-period of the first period.
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公开(公告)号:US09829760B2
公开(公告)日:2017-11-28
申请号:US14417707
申请日:2015-01-20
发明人: Xiaohui Yao
IPC分类号: G02F1/1362 , G02F1/1343 , G02F1/1368 , G09G3/00 , G09G3/36
CPC分类号: G02F1/136286 , G02F1/134309 , G02F1/136213 , G02F1/1368 , G02F2001/134345 , G09G3/003 , G09G3/3614 , G09G3/3677 , G09G3/3688 , G09G2300/0426 , G09G2300/0876 , G09G2310/0218 , G09G2310/08 , G09G2320/0233
摘要: Related to is an array substrate, a liquid crystal display panel and a method for driving the liquid crystal display panel. In the array substrate, each pixel unit thereon comprises a main-area electrode, a sub-area electrode and a sharing capacitor. a control terminal of a sharing control switch connecting the sharing capacitor to the sub-area electrode is connected, via a first control switch, to a scan line correlated with an Nth pixel unit which is arranged in a scanning direction and counted from a present pixel unit, and via a second control switch to a scan line correlated with the present pixel unit. Under a two-dimensional scanning mode, the first control switch is configured to be turned on when at least there is a scan signal on a scan line to which the first control switch is connected, and the second control switch is configured to be turned off when at least there is a scan signal on both a scan line to which the second control switch is connected and on a scan line to which a first control switch of the same stage as the second control switch is connected. Under a three-dimensional scanning mode, the first control switch is configured to be turned off when at least there is a scan signal on the scan line to which the first control switch is connected, and the second control switch is configured to be turned on when at least there is a scan signal on the scan line to which the second control switch is connected.
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