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公开(公告)号：US20210201776A1
公开(公告)日：2021-07-01
申请号：US16063932
申请日：2017-11-21
Inventor： Can Yuan , Yongqian Li , Pan Xu , Zhidong Yuan , Zhenfei Cai
IPC: G09G3/3233
Abstract: The present application discloses a pixel circuit, including a data-input sub-circuit configured to apply a data voltage from the data line to a first node; a reset sub-circuit configured to reset the second node; a driving-control sub-circuit coupled to a first power supply, the first node, and the second node; a power-storage sub-circuit configured to regulate a voltage difference between the first node and the second node; a light-emitting device coupled to the second node and a second power supply; and a sampling sub-circuit coupled to the data line and the second node and being configured to control the data line to connect with the second node for collecting a voltage signal containing information about electrical properties of the driving-control sub-circuit and being used to generating a compensation voltage for compensating any drifts of the electrical properties.
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32.发明授权公开(公告)号：US10997913B2
公开(公告)日：2021-05-04
申请号：US16453233
申请日：2019-06-26
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Dongxu Han , Tieshi Wang , Zhongyuan Wu , Yongqian Li , Chi Zhang , Jinxia Hu , Wei Chen , Pan Xu
IPC: G06F3/038 , G09G3/3233
Abstract: The present disclosure relates to a method and an apparatus for controlling a drive current of a display panel, an electronic device, and a storage medium. A standard drive current of the display panel is calculated based on the power function of the display panel. An actual drive current is detected in a working process of the display panel, and it is determined whether the actual drive current exceeds the standard by comparing the actual drive current with the standard drive current. The actual drive current is regulated if the actual drive current exceeds the standard.
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公开(公告)号：US10964763B2
公开(公告)日：2021-03-30
申请号：US16417105
申请日：2019-05-20
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Pan Xu , Yicheng Lin , Ling Wang , Guoying Wang
Abstract: A display panel, a manufacturing method thereof and a display device are disclosed. The display panel includes a display backplane and a display cover assembled to be a cell. The display backplane includes a first base substrate, a pixel circuit layer, a first electrode layer, a light-emitting layer, a second transparent electrode layer, and a plurality of first pixel regions stacked on the first base substrate. The display cover includes a second base substrate, a plurality of optical sensing components and a plurality of second pixel regions on the second base substrate, the plurality of optical sensing components being arranged in the plurality of second pixel regions in one to one correspondence.
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公开(公告)号：US10803823B2
公开(公告)日：2020-10-13
申请号：US15772677
申请日：2017-09-15
Inventor： Meng Li , Yongqian Li , Pan Xu , Miao Zhang
Abstract: The present application provides a shift register circuit, a gate driving circuit including the shift register circuit, and a driving method applied to the shift register circuit. The shift register circuit includes an input sub-circuit, an output sub-circuit, an output reset sub-circuit, and a first capacitor, wherein the first capacitor is connected between the pull-up node and the second clock signal terminal, and configured to maintain a high level at the pull-up node through the second clock signal input at the second clock signal terminal. The shift register circuit further includes a second capacitor connected between the pull-down node and a first voltage input terminal, and configured to pull down a level at the pull-down node through a reverse bias voltage input at the first voltage input terminal during a blanking time after a frame of scanning ends.
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35.发明授权公开(公告)号：US10784445B2
公开(公告)日：2020-09-22
申请号：US16405726
申请日：2019-05-07
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Ling Wang , Cuili Gai , Pan Xu , Yicheng Lin
Abstract: A test substrate includes a base and a first electrode layer, a pixel defining layer, a light-emitting functional layer and a second electrode layer disposed on the base in sequence. The test substrate has at least two test regions, and each test region is a region where one first electrode of the plurality of first electrodes is located. Each test region includes a first region. Orthographic projections of portions of the pixel defining layer and the light-emitting functional layer located in a same first region on the base overlap with each other, and areas of orthographic projections of portions of the first electrode layer located in first regions of the at least two test regions are different.
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Patent Agency Ranking
公开(公告)号：US10565909B2
公开(公告)日：2020-02-18
申请号：US15540752
申请日：2016-11-09
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Pan Xu , Guangcai Yuan , Yongqian Li , Dongxu Han
IPC: G09G3/00 , G09G3/3225
Abstract: A test method of a display panel and a test device are disclosed. The test method includes outputting a data signal of a preset test image to the display panel to cause plural light emitting elements to emit light according to the preset test image; outputting a starting signal to a scan circuit in the display panel to cause the scan circuit to output an active level of a switching circuit to the plural rows of first scan lines as connected, successively, according to a preset timing sequence; receiving a sensing signal from a sensor circuit, including voltage value information of a first terminal of every light emitting element; comparing the voltage value information of the first terminal of every light emitting element with the preset test image to obtain a test result. The test method solves the problem of missing detection of Mura.
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公开(公告)号：US10347177B2
公开(公告)日：2019-07-09
申请号：US15168886
申请日：2016-05-31
Inventor： Yuting Zhang , Feng Liao , Zhongyuan Wu , Pan Xu
IPC: G09G3/3258 , G09G3/3266 , G09G3/3233
Abstract: The present invention provides a pixel driving circuit, a driving method thereof, and a display device. The pixel driving circuit of the present invention comprises a data writing unit, a threshold compensation unit, a driving unit, a light-emitting unit, and a voltage stabilizing unit; the data writing unit is connected with a first node, a scan signal line and a data signal line; the first node is a connection node between the data writing unit and the driving unit; the threshold compensation unit is connected with the first node, a first control signal line, a first voltage terminal and the driving unit; the driving unit is connected with the light-emitting unit; and the voltage stabilizing unit is connected with the data writing unit, a second control signal line and the first voltage terminal.
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公开(公告)号：US20180330667A1
公开(公告)日：2018-11-15
申请号：US15833080
申请日：2017-12-06
Inventor： Zhidong Yuan , Yongqian Li , Min He , Can Yuan , Pan Xu
IPC: G09G3/3258
CPC classification number: G09G3/3258 , G09G3/3233 , G09G3/3266 , G09G2300/0861 , G09G2310/0262
Abstract: A gate driving unit, a gate driving circuit, a display driving circuit and a display device. The gate driving unit comprises: an input circuit; a first control circuit, configured to provide a first power voltage signal to a first control node in a case that a pull-up node is at an active voltage level; a second control circuit, configured to provide a third clock signal of a third clock terminal to a second control node in a case that the pull-up node is at the active voltage level, and pull down the second control node to a second power voltage signal of a second power voltage terminal in a case that the pull-up node is at a non-active voltage level; and an output circuit, configured to output the first power voltage signal of a first power voltage terminal to the output terminal.
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公开(公告)号：US20180301100A1
公开(公告)日：2018-10-18
申请号：US15821149
申请日：2017-11-22
Inventor： Meng Li , Yongqian Li , Pan Xu , Zhenfei Cai , Zhidong Yuan , Can Yuan , Xuehuan Feng , Wenchao Bao
IPC: G09G3/36
Abstract: A display device, a gate driving circuit and a gate driving unit are provided. The gate driving unit includes: a signal maintenance circuit configured to, in the case that a first clock signal at a high level is received, output a high level in accordance with an inputted trigger signal at a high level; a first-level output circuit configured to, in the case that a second clock signal at a high level is received, output a first-level driving signal at a high level in accordance with the high level from an output end of the signal maintenance circuit; and a second-level output circuit configured to, in the case that a third clock signal at a high level is received, output a second-level driving signal at a high level in accordance with the high level from an output end of the first-level output circuit.
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公开(公告)号：US10068526B2
公开(公告)日：2018-09-04
申请号：US15102993
申请日：2015-10-23
Inventor： Pan Xu , Zhongyuan Wu , Yuting Zhang , Yongqian Li
IPC: G09G5/10 , G09G3/36 , G06F3/038 , G09G5/00 , G09G3/3258 , G09G3/3241
Abstract: There are disclosed a pixel circuit and a driving method of the same and a display apparatus. The pixel circuit comprises: a driving transistor (Tr), a storage capacitor (Cs), a data writing module (10), a light-emitting element (20) and a predetermined voltage writing module (30). A first terminal of the storage capacitor (Cs) is connected to a gate of the driving transistor (Tr) and a second terminal thereof is connected to a second electrode of the driving transistor (Tr). The predetermined voltage writing module (30) is configured to make the second electrode of the driving transistor (Tr) reach a predetermined potential in a pre-charging phase and a compensating phase; and the data writing module (10) is configured to store a data voltage of a data line into the storage capacitor (Cs) in the compensating phase. In the pixel circuit and the driving method thereof and the display apparatus, the driving current is not affected by the threshold voltage, and influence of the voltage across the light-emitting element on the driving current is eliminated, thereby the uniformity of luminance of the light-emitting element is raised and improving the display effect of the display apparatus is improved.
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