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21.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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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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Patent Agency Ranking
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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公开(公告)号：US12262597B2
公开(公告)日：2025-03-25
申请号：US18282106
申请日：2022-11-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Ying Han , Pan Xu , Xing Zhang , Guangshuang Lv , Donghui Zhao , Chengyuan Luo , Cheng Xu
IPC: H10K59/124 , G09G3/00 , G09G3/3225 , H10K59/122 , H10K59/131
Abstract: A display substrate and a display device, the display substrate includes a base substrate, a pixel driving circuit layer, a first planarization layer, a first metal layer, a second planarization layer, a plurality of first electrodes and a pixel definition layer; the pixel driving circuit layer includes a plurality of pixel driving circuits, the first planarization layer includes a plurality of first vias respectively exposing output terminals of the pixel driving circuits, the first metal layer includes a plurality of data lines extending in a first direction, the pixel definition layer includes a plurality of first definition walls extending in the first direction and a plurality of second definition walls extending in a second direction, and an orthographic projection of at least part of the data lines on the base substrate respectively overlaps with orthographic projections of the plurality of first definition walls on the base substrate.
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公开(公告)号：US12245463B2
公开(公告)日：2025-03-04
申请号：US17637772
申请日：2021-02-02
Applicant: BOE Technology Group Co., Ltd.
Inventor： Ying Han , Ling Wang , Yicheng Lin , Pan Xu , Guoying Wang , Xing Zhang
IPC: H10K59/121 , H10K59/126 , H10K59/131 , H10K59/60
Abstract: Disclosed are a display panel and a display device. The display panel includes: a base substrate; a detection circuit, located on the side of the base substrate, and including a transistor and a photosensitive detection component electrically connected to the transistor, and an orthographic projection of the transistor on the base substrate and an orthographic projection of the photosensitive detection component on the base substrate do not overlap with each other; a planarization layer, located on the side of the detection circuit facing away from the base substrate, and including a first surface facing away from the base substrate at the position in which the transistor is located, and a second surface facing away from the base substrate at the position in which the photosensitive detection component is located; and a light-emitting device, located on the side of the planarization layer away from the detection circuit.
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公开(公告)号：US12217695B2
公开(公告)日：2025-02-04
申请号：US17794994
申请日：2021-08-24
Applicant: BOE Technology Group Co., Ltd.
Inventor： Pan Xu , Hongli Wang , Danyang Ma , Guoying Wang , Xing Zhang , Chengyuan Luo , Ying Han
IPC: G09G3/3266 , H10K59/131
Abstract: A display substrate includes an underlayer substrate and a circuit structure layer. The circuit structure layer is located in a display area of the underlayer substrate. The circuit structure layer includes at least one first circuit area and at least one second circuit area. The first circuit area includes at least one first gate drive circuit; the second circuit area includes at least one second gate drive circuit. The first gate drive circuit is cascaded with the second gate drive circuit. The first gate drive circuit includes a plurality of cascaded first gate drive units, and the second gate drive circuit includes a plurality of cascaded second gate drive units. A plurality of first gate drive units are sequentially arranged in a second direction, and a plurality of second gate drive units are sequentially arranged in the second direction.
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公开(公告)号：US12058880B2
公开(公告)日：2024-08-06
申请号：US17297088
申请日：2020-10-22
Applicant: BOE Technology Group Co., Ltd.
Inventor： Pan Xu , Yicheng Lin , Ling Wang , Guoying Wang , Ying Han , Xing Zhang
IPC: H10K50/824 , H10K50/844 , H10K59/122 , H10K71/00 , H10K102/00
CPC classification number: H10K50/824 , H10K50/844 , H10K71/00 , H10K59/122 , H10K2102/3026
Abstract: A display substrate, a manufacturing method thereof, and a display panel. The display substrate includes a base, a first electrode, a first auxiliary cathode, a second electrode and a second auxiliary cathode, a pixel definition layer and a cathode. The first and second electrodes are located in the display area and the first and second auxiliary cathodes are located in the non-emitting area. The orthogonal projections of the first auxiliary cathode and the second auxiliary cathode on the base are in a mesh structure. The pixel definition layer is at least located in the non-emitting area. The cathode at least covers the display area and the cathode is arranged on one side of the pixel definition layer far away from the base; wherein the cathode, the first auxiliary cathode and the second auxiliary cathode are electrically connected.
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