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公开(公告)号：EP3832635A1
公开(公告)日：2021-06-09
申请号：EP19836777.3
申请日：2019-07-31
发明人： FENG, Xuehuan , LI, Yongqian
IPC分类号： G09G3/3266 , G11C19/28
摘要： The present application provides a shift register, a gate driving circuit, a display device and a gate driving method. The shift register includes an input circuit, an inverter circuit and an output circuit. The input circuit, the inverter circuit and the output circuit are coupled to a pull-up node, and the output circuit and the inverter circuit are coupled to a pull-down node. The input circuit is configured to control a voltage at the pull-up node in response to an input signal. The inverter circuit is configured to invert the voltage at the pull-up node and output the inverted voltage to the pull-down node. The output circuit is configured to output a multi-pulse signal within a duration of one frame under control of the voltage at the pull-up node and a voltage at the pull-down node.
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52.发明公开
公开(公告)号：EP3830817A1
公开(公告)日：2021-06-09
申请号：EP19839244.1
申请日：2019-06-28
发明人： FENG, Xuehuan , LI, Yongqian
IPC分类号： G09G3/3208
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公开(公告)号：EP3825996A1
公开(公告)日：2021-05-26
申请号：EP19837382.1
申请日：2019-07-16
发明人： FENG, Xuehuan , LI, Yongqian
IPC分类号： G09G3/3266
摘要： A shift register unit, a gate drive circuit, a display device, and a driving method. A shift register unit (10) comprises a blanking input circuit (110), a blanking control circuit (120), a blanking coupling circuit (130), a display input circuit (200), and an output circuit (300). The blanking input circuit (110) is configured to charge a control node (H) in response to a compensation selection control signal and maintain a level of the control node (H). The blanking control circuit (120) is configured to be controlled by the level of the control node (H) and the first clock signal to charge a first node (Q) on the basis of the first clock signal. The blanking coupling circuit (130) is electrically connected to the control node (H), and is configured to perform coupling control on the level of the control node (H) in response to the first clock signal. The shift register unit (10) is capable of implementing random compensation, and can perform coupling control on the level of the control node (H) at the same time, such that the first node (Q) is more sufficiently charged and output abnormality is prevented.
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公开(公告)号：EP3813050A1
公开(公告)日：2021-04-28
申请号：EP19822675.5
申请日：2019-03-27
发明人： HAN, Dongxu , WANG, Tieshi , WU, Zhongyuan , LI, Yongqian , XU, Pan , HU, Jinxia
IPC分类号： G09G3/3208
摘要： Brightness compensation method and apparatus for pixel point are provided. The compensation method includes measurement processes of N times, N ≥2. Each measurement process includes: obtaining images displayed on the display screen under different gray-scale signals, and extracting brightness of pixel points in the images; calculating difference parameters between brightness of the pixel points and brightness of the reference pixel point under the different gray-scale signals; fitting the difference parameters of the pixel points with initial brightness of the pixel points under the different gray-scale signals, to obtain initial brightness-difference parameter curves of the pixel points; calculating compensation parameters of the pixel points; during an (i) th measurement process, i=2 to N, images displayed on the display screen under the different gray-scale signals are obtained by compensating the initial brightness of the pixel points under the different gray-scale signals based on the compensation parameters obtained during an (i-1) th measurement process.
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公开(公告)号：EP3649635A1
公开(公告)日：2020-05-13
申请号：EP17890839.8
申请日：2017-11-21
发明人： YUAN, Can , LI, Yongqian , XU, Pan , YUAN, Zhidong , CAI, Zhenfei
IPC分类号： G09G3/32
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公开(公告)号：EP3637400A1
公开(公告)日：2020-04-15
申请号：EP18814097.4
申请日：2018-01-17
发明人： LI, Yongqian , XU, Pan , LI, Quanhu
IPC分类号： G09G3/3208 , G09G3/3258 , G09G3/3291
摘要： The present application provides a pixel compensation circuit, including a driving sub-circuit, a compensation sub-circuit, a first switching sub-circuit, and a second switching sub-circuit. The driving sub-circuit has a control terminal electrically connected to a first terminal of the second switching sub-circuit, a first terminal electrically connected to a light-emitting element, and a second terminal electrically connected to a power source; the compensation sub-circuit has a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to the control terminal of the driving sub-circuit; the first switching sub-circuit has a control terminal electrically connected to a first signal input terminal, a first terminal electrically connected to the first terminal of the driving sub-circuit, and a second terminal electrically connected to an initial voltage input terminal; and the second switching sub-circuit has a control terminal electrically connected to a second signal input terminal, a first terminal electrically connected to the control terminal of the driving sub-circuit, and a second terminal electrically connected to a data signal input terminal.
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公开(公告)号：EP3605511A1
公开(公告)日：2020-02-05
申请号：EP18775675.4
申请日：2018-03-02
发明人： LI, Yongqian , XU, Pan , LI, Quanhu
IPC分类号： G09G3/00
摘要： A circuitry and a method for detecting a failed pixel, and a display device are provided. The circuitry for detecting the failed pixel includes a display control circuit and a failed pixel detection circuit. The display control circuit is connected to a pixel driving circuit, and configured to control, at detection voltage write-in stage and failed pixel detection stage, the pixel driving circuit to cause light-emitting element not to emit light. The failed pixel detection circuit is connected to first electrode of the light-emitting element via failure sense line, and configured to apply a reference voltage to the first electrode of the light-emitting element via the failure sense line at the detection voltage write-in stage, detect a potential at the first electrode of the light-emitting element at the failed pixel detection stage, and determine, in accordance with the potential, whether the pixel circuit is failed.
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公开(公告)号：EP4068360A1
公开(公告)日：2022-10-05
申请号：EP19945442.2
申请日：2019-11-29
发明人： LI, Meng , WU, Zhongyuan , LI, Yongqian , YUAN, Can , YUAN, Zhidong , FENG, Xuehuan , LIU, Lang , ZHANG, Dacheng
摘要： A display substrate and a manufacturing method thereof and a display device are provided. The display substrate includes a base substrate and sub-pixels on the base substrate. The sub-pixels are arranged in a sub-pixel array. At least one sub-pixel includes a first transistor, a second transistor, a third transistor and a storage capacitor. The first electrode of the third transistor is electrically connected to an active layer of the third transistor through a first via hole, and the first electrode of the third transistor is configured to be electrically connected to the light emitting element through a second via hole; the first via hole and the second via hole are at least partially overlapped with each other in a direction perpendicular to the base substrate. The display substrate can effectively reduce a voltage drop at an electrode of the light emitting element and improve the display effect.
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59.发明公开
公开(公告)号：EP3832637A1
公开(公告)日：2021-06-09
申请号：EP19835213.0
申请日：2019-05-08
发明人： FENG, Xuehuan , LI, Yongqian
IPC分类号： G09G3/36
摘要： A shift register unit and a drive method thereof, a gate drive circuit, and a display device are provided. A shift register unit (10) includes a first noise reduction circuit (300), a first input circuit (100), and an output circuit (200); the first input circuit (100) is coupled to a first node (Q), and is configured to input a first control signal to the first node (Q) in response to a first input signal; the output circuit (200) is coupled to the first node (Q) and an output terminal (Ot), and is configured to output a first output signal to the output terminal (Ot) under control of a level of the first node (Q); and the first noise reduction circuit (300) is coupled to the output terminal, and is configured to perform noise reduction on the output terminal (Ot) in response to a level of the output terminal (Ot).
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60.发明公开
公开(公告)号：EP3825994A1
公开(公告)日：2021-05-26
申请号：EP19835218.9
申请日：2019-07-08
发明人： FENG, Xuehuan , LI, Yongqian
IPC分类号： G09G3/3208 , G11C19/28
摘要： A shift register unit, a method for driving a shift register unit, a gate driving circuit, and a display device are provided. The shift register unit (10) includes a blanking input circuit (100), a display input circuit (200), and an output circuit (300). The blanking input circuit (100) is configured to, according to a blanking input signal and a blanking control signal, input a blanking pull-up signal to a first control node (Q) in a blanking period, and compensate the blanking input circuit (100); the display input circuit (200) is configured to input a display pull-up signal to the first control node (Q) in a display period in response to a display input signal; and the output circuit (300) is configured to output a composite output signal to an output terminal (OP). The shift register unit (10) can alleviate a threshold voltage loss in a case where the blanking input circuit (100) performs level control (e.g., pull-up) on the first control node (Q), to avoid affecting a potential of the first control node (Q).
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