Patents Assigned to WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
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Patent number: 11749193Abstract: Provided a pixel circuit, a method for driving a pixel circuit, a display panel, and a display apparatus. The pixel circuit applied in a display panel includes a data writing module, a drive transistor, a leakage current alleviation module, a first power supply terminal, and a data signal terminal. The data writing module configured to write data signal of the data signal terminal to gate of the drive transistor in data writing stage; the leakage current alleviation module configured to transmit leakage current generated by the data writing module to first power supply terminal in leakage current alleviation stage; and the drive transistor configured to drive a light-emitting element to emit light in light emission stage. The leakage current alleviation stage located at least between the data writing stage and the light emission stage, enhancing the luminance accuracy of the light-emitting element and the display uniformity of the display panel.Type: GrantFiled: February 11, 2022Date of Patent: September 5, 2023Assignees: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Zhi Liu, Yana Gao, Fei Wu, Yue Li, Xingyao Zhou, Xueqi Tian
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Patent number: 11749169Abstract: The present disclosure provides a display panel, a driving method, and a display apparatus. The display panel includes pixel circuits, the pixel circuits include: a drive transistor, with a gate electrically connected to a first node, a first electrode electrically connected to a second node; a voltage writing module, electrically connected to a first scanning signal line, a data line, and second node; a threshold compensation module, wherein a driving cycle of the pixel circuit includes a writing phase and a holding phase, writing phase includes a first non-light-emission period, and holding phase includes a second non-light-emission period; voltage writing module writes a display voltage into second node in first non-light-emission period in response to an enable level of first scanning signal, writes a node reset voltage into the second node in the second non-light-emission period in response to the enable level of the first scanning signal.Type: GrantFiled: July 13, 2022Date of Patent: September 5, 2023Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Mengmeng Zhang, Xingyao Zhou, Yue Li, Jian Kuang, Yuantao Wu, Jing Huang
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Patent number: 11751474Abstract: The present disclosure relates to the field of organic electroluminescence materials and particularly relates to a compound and an organic light emitting display device. The compound has a structure represented by Formula (I): and, m, n, p, q, r, s, u, and v are each independently selected from 0 or 1, at least one of r and s is 1, at least one of u and v is 1, L1, L2, L3, and L4 are each independently selected from substituted or unsubstituted C6-C40 aryl, or substituted or unsubstituted C3-C40 heterocyclyl, and A1, A2, A3, and A4 each are independently selected from an electron acceptor unit.Type: GrantFiled: October 1, 2019Date of Patent: September 5, 2023Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Wei Gao, Ying Liu, Lei Zhang, Wenpeng Dai, Jinghua Niu, Gaojun Huang
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Patent number: 11741882Abstract: Provided are an organic light-emitting display panel, a driving method and a driving device therefor. The driving method includes: setting brightness levels of the organic light-emitting display panel and maximum gray scale brightness levels, and maximum gray scale brightness levels include a first maximum gray scale brightness corresponding to a maximum brightness level of the organic light-emitting display panel, and an effective pulse duty cycle of a light-emitting control signal for driving the first maximum gray scale brightness is defined as a first effective pulse duty cycle; determining a target brightness level of the switched picture and a target maximum gray scale brightness corresponding to the target brightness level; adjusting the target effective pulse duty cycle of the light-emitting control signal for driving the switched picture.Type: GrantFiled: December 30, 2021Date of Patent: August 29, 2023Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Dongxu Xiang, Yue Li, Renyuan Zhu, Yana Gao, Zhonglan Cai
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Patent number: 11741892Abstract: Pixel circuit, display panel and display device are provided. The pixel circuit includes a driving module, a data writing module, a first reset module, a threshold compensation module, light emitting control modules, a leakage suppression module, a storage capacitor, a first capacitor, and a light emitting module. A first terminal of the first reset module is electrically connected to a reference signal terminal. A first terminal of the threshold compensation module is electrically connected to a second terminal of the driving module. A control terminal of the driving module is electrically connected to a first node. A second terminal of the first reset module and a second terminal of the threshold compensation module are both electrically connected to the first node through the leakage suppression module. A connection node between the leakage suppression module and the second terminal of the first reset module is a second node.Type: GrantFiled: November 15, 2021Date of Patent: August 29, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Shuai Yang, Yue Li, Mengmeng Zhang, Gaojun Huang
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Patent number: 11727886Abstract: A display panel, a drive method, and a display apparatus are provided in the present disclosure. The display region of the display panel includes a plurality of scan line units; and each scan line unit includes two scan lines which extend along the first direction and are arranged along a second direction. The method includes, for displaying M frames of pictures, receiving a scan drive signal sequentially by a plurality of scan lines arranged along the second direction; and for displaying N frames of pictures adjacent to the M frames of pictures, receiving the scan drive signal sequentially by the plurality of scan line units arranged along the second direction; and along the second direction, for each same scan line unit, receiving the scan drive signal by an ith scan line after an (i+1)th scan line receives the scan drive signal.Type: GrantFiled: September 8, 2022Date of Patent: August 15, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Yue Li, Peng Zhang, Mengmeng Zhang
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Publication number: 20230251468Abstract: Provided is a display device. The display device includes a primary display screen, a secondary display screen, an image acquisition unit, a primary display region, and a secondary display region. The primary display region is connected to the secondary display region. The primary display screen is disposed in the primary display region. The secondary display screen is disposed in the secondary display region. In a first display state, a gap exists between the primary display screen and the secondary display screen in a first direction. The length of a section line segment of a light receiving surface of the image acquisition unit on a first plane is L2. The length L1 of the gap between the primary display screen and the secondary display screen in the first direction satisfies that L1<L2.Type: ApplicationFiled: April 17, 2023Publication date: August 10, 2023Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Yanhua LIU, Mingyan HUANG
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Publication number: 20230247882Abstract: A display panel and a display device are provided. The display panel includes first color sub-pixels, second color sub-pixels, and third color sub-pixels. The first color sub-pixel is surrounded by a first safe region, the second color sub-pixel is surrounded by a second safe region, and the third color sub-pixel is surrounded by a third safe region. None of the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels is provided in each of the first safe regions, the second safe regions and the third safe regions. The first safe region, the second safe region, and the third safe region have three different areas, respectively.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Bing Han, Gaojun Huang, Yu Xin
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Patent number: 11715743Abstract: A display panel, a crack detection method and a display device are provided. The display panel includes a substrate, a signal wiring disposed over the substrate, and a test wiring insulated from the signal wiring and disposed on a side of the signal wiring facing away from the substrate. An orthographic projection of the test wiring on the substrate overlaps an orthographic projection of the signal wiring on the substrate. The display panel also includes a first test terminal disposed over the substrate and electrically connected with an end of the test wiring, and a second test terminal disposed over the substrate and electrically connected with another end of the test wiring.Type: GrantFiled: March 4, 2021Date of Patent: August 1, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Zi Xu, Lin Cheng, Xinzhao Liu
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Patent number: 11715408Abstract: A driving circuit includes at least two shift registers in cascade. In each shift register, a first output control module is configured to transmit a voltage of a first voltage terminal to an output terminal in response to a turn-on level of a first node. A second output control module is configured to transmit a voltage of a second voltage terminal to an output terminal in response to a turn-on level of a second node. A first node control module is configured to transmit a voltage of the input terminal to the first node in response to a turn-on level of a first clock signal terminal and transmit a voltage of the second voltage terminal to the first node in response to turn-on levels of the second clock signal terminal and the third node or in response to the turn-on level of the second node.Type: GrantFiled: August 2, 2022Date of Patent: August 1, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Mengmeng Zhang, Jing Huang
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Patent number: 11711963Abstract: The present invention provides a mask, a display panel, a method for manufacturing a display panel, and a display device. The display panel has a hollow region and a display region surrounding the hollow region. The display panel includes a plurality of organic light-emitting devices arranged only in the display region. Each of the plurality of organic light-emitting devices includes an anode layer, a cathode layer, a light-emitting layer and a functional layer. The functional layer includes a plurality of uneven portions.Type: GrantFiled: December 31, 2020Date of Patent: July 25, 2023Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Liyuan Liu, Zhiyong Xiong, Di Zhu, Yawei Zhong
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Publication number: 20230222962Abstract: A display panel and a display device, including a substrate, a circuit layer located at a side of the substrate, and a top light-shielding layer configured to receive a voltage signal. The circuit layer includes a light-emitting shift circuit, including a first output module and a control module. The first output module is electrically connected to a first node, a first fixed potential signal line, and a light-emitting control signal line and is configured to, in response to a voltage of the first node, transmit a light-emitting enable voltage provided by the first fixed-potential signal line to the light-emitting control signal line. The control module is connected to the first node and includes a control transistor. The top light-shielding layer is located at a side of the control transistor. In a direction perpendicular to the substrate, the top light-shielding layer overlaps with a channel of the control transistor.Type: ApplicationFiled: September 6, 2022Publication date: July 13, 2023Applicant: Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Mengjia He, Yana Gao, Zhi Liu, Yuying Cai, Xingyao Zhou
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Patent number: 11699373Abstract: A display panel and a display device are provided in the present disclosure. The display panel, having a display region and a frame region outside the display region, includes a base substrate; a buffer layer on a side of the base substrate, where the buffer layer includes an a-Si layer; a semiconductor layer on a side of the buffer layer away from the base substrate; an insulation layer on a side of the semiconductor layer away from the base substrate; and a power signal layer on a side of the insulation layer away from the base substrate. The power signal layer includes a plurality of first power voltage lines in the display region; and the power signal layer is electrically connected to a power signal terminal which alternately outputs a positive voltage signal and a negative voltage signal.Type: GrantFiled: March 5, 2021Date of Patent: July 11, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Zhiyong Xiong, Yaolin Wang, Rui Ding
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Publication number: 20230217738Abstract: The embodiments of the present application provide a display panel and a display apparatus. The display panel includes: fan-out lines and a power signal line, and the power signal line includes openings; in a direction perpendicular to a plane in which the display panel is located, the fan-out lines include M fan-out line groups; the (i-1)-th fan-out line group includes the fan-out lines with a length Li-1, the i-th fan-out line group includes the fan-out lines with a length Li, the (i+1)-th fan-out line group includes the fan-out lines with a length Li+1, and Li?1>Li>Li+1; overlapping areas between the power signal line and the fan-out lines with the length Li?1, Li and Li+1 are Si?1, Si and Si+1, respectively, Si?1?Si?Si+1, and 2 ?i?M?1.Type: ApplicationFiled: March 21, 2022Publication date: July 6, 2023Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Qibing WEI, Peng ZHANG, Kang YANG, Yuying CAI
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Patent number: 11693498Abstract: A touch display panel includes a substrate including display region and non-display region; light-emitting elements disposed in the display region; encapsulation layer including at least one inorganic layer and at least one organic layer that are stacked; touch layer disposed on a side of the at least one inorganic layer facing away from the light-emitting elements; plurality of touch wires extending to the non-display region along first direction; and step region including first region with at least one wall and second region with plurality of touch terminals, where at least part of the touch terminals are electrically connected to the touch wires in one-to-one manner, the second region includes at least one blocking column which extends along second direction and configured to prevent the at least one inorganic layer disposed between the touch layer and the substrate and in the encapsulation layer from extending to the touch terminals.Type: GrantFiled: June 30, 2021Date of Patent: July 4, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Lin Cheng, Yingying Wu, Peng Zhang, Xinzhao Liu
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Publication number: 20230205335Abstract: Embodiments of the application provide a display panel and display device. The display panel has a display area and a non-display area and includes a touch-control component, including multiple first electrode blocks distributed in sequence along a first direction and multiple second electrode blocks distributed in sequence along a second direction, the first electrode blocks and second electrode blocks being positioned in the display area; and a dummy component including dummy electrode blocks positioned in the display area and dummy traces positioned in the non-display area, each dummy electrode block being positioned between two adjacent first electrode blocks and a second electrode block adjacent to the two adjacent first electrode blocks, wherein there is a first distance S between two adjacent dummy electrode blocks, and a distance from an end of at least one dummy trace to a dummy electrode block is greater than or equal to S/3. (FIG.Type: ApplicationFiled: March 9, 2022Publication date: June 29, 2023Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Qibing WEI, Peng Zhang, Kang Yang
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Publication number: 20230205341Abstract: The embodiments of the present application provide a display panel and a display device. The display panel has a display area and a non-display area, the display panel includes: a substrate, a touch component arranged on the substrate, the touch component comprising touch electrodes located in the display area and touch leads connected to the touch electrodes and located in the non-display area; and a circuit board connected to the substrate in the non-display area, the touch leads being connected between the touch electrodes and the circuit board; and wherein the non-display area has a cutting track arranged surrounding at least part of the display area, at least part of the touch leads includes first redundant winding segments and connection segments, at least part of the first redundant winding segments extend along a direction away from the circuit board and fill between the cutting track and the display area.Type: ApplicationFiled: February 21, 2023Publication date: June 29, 2023Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Qibing WEI, Qingxia WANG, Peng ZHANG, Kang YANG
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Publication number: 20230205340Abstract: The embodiments of the present application provide a display panel and a display device. The display panel has a display area and a non-display area, the display panel includes: a substrate, a touch component arranged on the substrate, the touch component comprising touch electrodes located in the display area and touch leads connected to the touch electrodes and located in the non-display area; and a circuit board connected to the substrate in the non-display area, the touch leads being connected between the touch electrodes and the circuit board; and wherein the non-display area has a cutting track arranged surrounding at least part of the display area, at least part of the touch leads includes first redundant winding segments and connection segments, at least part of the first redundant winding segments extend along a direction away from the circuit board and fill between the cutting track and the display area.Type: ApplicationFiled: February 21, 2023Publication date: June 29, 2023Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Qibing WEI, Qingxia Wang, Peng Zhang, Kang Yang
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Patent number: 11690260Abstract: The present disclosure provides a display panel and a display device. The display panel includes pixel circuits arranged in a matrix, and a blocking unit. Each pixel circuit includes: a driving transistor; a first switch transistor; a second switch transistor; and a third switch transistor. The blocking unit is configured to receive a fixed potential signal, and at least a partial area of the blocking unit is located between a first semiconductor connection portion and a second semiconductor connection portion, the first semiconductor connection portion is connected between a second electrode of the first switch transistor and a gate electrode of the driving transistor, and the second semiconductor connection portion is electrically connected between a first electrode of the second switch transistor and a data line.Type: GrantFiled: September 13, 2021Date of Patent: June 27, 2023Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCHInventors: Lijing Han, Xian Chen, Yu Xin
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Patent number: 11676537Abstract: Provided is a pixel driving circuit, a display panel and a display apparatus. The pixel driving circuit includes: driving transistor having gate electrode connected to first node, first electrode connected to second node, and second electrode electrically connected to third node coupled to light emitting element; storage capacitor connected to the first node; and M first transistors having M first and second electrodes connected to the first node M functional signal terminals, respectively, M?1. A driving cycle of the pixel driving circuit includes light-emitting stage and N non-light-emitting stages, N?M. The M first transistors are respectively turned on in the N non-light-emitting stages, and the M first transistors are all turned off in the light-emitting stage. One of the N non-light-emitting stages includes first non-light-emitting stage adjacent to the light-emitting stage.Type: GrantFiled: June 10, 2022Date of Patent: June 13, 2023Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai BranchInventors: Mengmeng Zhang, Xingyao Zhou, Yue Li, Jian Kuang, Yuantao Wu