Patents Assigned to WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
  • Patent number: 11620947
    Abstract: The embodiments of present application discloses a display panel and a display apparatus. The display panel includes a pixel circuit including a driving transistor and a data writing module; a data signal line connected to the data writing module and used to provide a data signal to the pixel circuit; and a voltage control module connected to the data signal line; wherein a low-frequency data refresh cycle includes a number of data frames including a data writing frame and n holding frames; in the data writing frame, the data signal line writes the data signal into the driving transistor; in the holding frames, the data signal line does not write the data signal; in first m holding frames, the voltage control module controls the data signal line to be maintained at a first voltage value V1, V1<V2, V2 is a preset data voltage value, and n?m?1.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: April 4, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yuantao Wu, Yue Li, Shuai Yang, Mengmeng Zhang
  • Patent number: 11620950
    Abstract: A pixel driving circuit, a driving method, a display panel and a display device are provided. The pixel driving circuit include a driving module, configured to drive a light-emitting element to emit light, wherein a control terminal of the driving module is electrically connected to a first node, and a first terminal is electrically connected to a second node; a data writing module, configured to write data signals, wherein a control terminal of the data writing module is electrically connected with a first scan signal line, and a first terminal is electrically connected with a data signal terminal; and a coupling module, configured to couple the data signals to the first terminal of the driving module, wherein a first terminal of the coupling module is electrically connected to a second terminal of the data writing module, and a second terminal is electrically connected to the second node.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: April 4, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Shuai Yang, Xingyao Zhou, Yue Li, Mengmeng Zhang
  • Patent number: 11620948
    Abstract: A pixel driving circuit, a method for driving the same, a display panel, and a display apparatus are provided. In the pixel driving circuit, a power voltage writing module includes an input terminal electrically connected to a power voltage signal line and an output terminal electrically connected to a driving module, a data voltage writing module includes an input terminal electrically connected to a data voltage signal line and an output terminal electrically connected to the driving module, and a light-emitting control module includes an input terminal electrically connected to the driving module and an output terminal electrically connected to the light-emitting module. A control terminal of the power voltage writing module, a control terminal of the light-emitting control module and a control terminal of the data voltage writing module are electrically connected to a first scan line.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: April 4, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventor: Lanlan Wang
  • Patent number: 11620945
    Abstract: Provided are a display panel, a driving method and a display device. The display panel includes a substrate, a sub-pixel disposed on one side of the substrate and a switch device. A first terminal of the switch device is electrically connected to a first terminal of a driving device, and a second terminal of the switch device is connected to a biased compensation voltage terminal. An image update period includes a data writing stage and a holding stage, and the holding stage includes a first stage and a second stage. The driving device generates a driving current according to a data voltage transmitted by the data writing device in the data writing stage; and the driving device provides the driving current to a light emitting element in the second stage. The switch device provides a biased compensation voltage to the first terminal of the driving device in the first stage.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: April 4, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD, WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Mengmeng Zhang, Xingyao Zhou, Yana Gao
  • Publication number: 20230097697
    Abstract: An organic light-emitting display panel has a display area and a non-display area and includes a base substrate, an organic light-emitting layer arranged at a side of the base substrate and including a plurality of light-emitting units, a pixel definition layer including a plurality of first openings, and a microlens layer arranged at a side of the pixel definition layer facing away from the base substrate and including at least one first sub-microlens. One light-emitting unit of the plurality of light-emitting units is located in one of the plurality of first openings. One first sub-microlens of the at least one first sub-microlens protrudes along a direction from the base substrate to the microlens layer. An orthogonal projection of one first sub-microlens of the at least one first sub-microlens on the base substrate overlaps with an orthogonal projection of the pixel definition layer on the base substrate.
    Type: Application
    Filed: December 1, 2022
    Publication date: March 30, 2023
    Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Guofeng ZHANG, Junqiang WANG, Jiaxin LI, Quanpeng YU
  • Publication number: 20230098040
    Abstract: A display panel has a non-display area and a display area including first and second display areas. The display panel includes pixel circuits located in the display area, and driving circuits located in the non-display area. Each pixel circuit includes a driving transistor and a first transistor electrically connected to a gate of the driving transistor. The pixel circuits include first pixel circuits electrically connected to pixels located in the first display area and second pixel circuits electrically connected to pixels located in the second display area. A gate of the first transistor in the first pixel circuit and a gate of the first transistor in the second pixel circuit are coupled to different driving circuits.
    Type: Application
    Filed: December 8, 2022
    Publication date: March 30, 2023
    Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Xingyao ZHOU, Yana GAO, Kang YANG, Wei LIU, Qijun YAO
  • Patent number: 11609649
    Abstract: 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: Grant
    Filed: March 9, 2022
    Date of Patent: March 21, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Qibing Wei, Qingxia Wang, Peng Zhang, Kang Yang
  • Patent number: 11605795
    Abstract: Provided are an organic light-emitting display panel and a display device. The organic light-emitting display includes an array substrate and organic light-emitting components each having an anode, a cathode and an organic functional layer. The organic functional layer includes an organic light-emitting layer, a first electron transmission layer, and a hole injection layer. LUMO1 and LUMO4 satisfy: |LUMO1?LUMO4|<1.7 eV. HOMO5 and HOMO4 satisfy: |HOMO5?HOMO4|<1 eV. A work function ?1 of the first dopant and a work function ?4 of the cathode satisfy: ?1<?4, and a work function ?2 of the second dopant and a work function ?3 of the anode satisfy: ?2>?3.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: March 14, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Shuang Cheng, Jinghua Niu, Xiangcheng Wang, Qing Zhu, Yinhe Liu, Xiaoxi Na, Lei Wen
  • Publication number: 20230065254
    Abstract: A display panel and a display device are provided. In an embodiment, the display panel has a display region and a non-display region and includes shift registers cascaded and arranged along a first direction. In an embodiment, the shift registers are located in the non-display region. In an embodiment, one of the shift registers includes a switch module and an output module. In an embodiment, the output module is coupled to an output terminal of the shift register and includes two output transistors, and the output transistors are located at a side of the switch module away from the display region. In this way, the probability of occurrence of abnormal phenomena, such as splash screen display, is reduced.
    Type: Application
    Filed: October 18, 2022
    Publication date: March 2, 2023
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Yue Li, Peng Zhang, Mengmeng Zhang, Gaojun Huang
  • Patent number: 11587512
    Abstract: Provided are a display panel and a display device. The display panel includes rows of pixels and a gate driver circuit; where a pixel among the plurality of rows of pixels includes a pixel circuit and the pixel circuit includes a light emission control terminal and a first scan drive terminal; the gate driver circuit includes stages of light emission drive devices, where each of the plurality of stages of light emission drive devices is disposed in correspondence to at least one row of pixel circuits and configured to provide a light emission control signal to the light emission control terminal of the pixel circuit; and the gate driver circuit further includes at least one stage of first scan drive device, where an input terminal of the first scan drive device is connected to an output terminal of the light emission drive device.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: February 21, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Mengmeng Zhang, Yue Li, Xingyao Zhou
  • Patent number: 11587485
    Abstract: A display panel and a display device are provided. The display panel has a display area and a non-display area. The display panel includes pixels arranged in H columns and H*x data lines arranged in the display area and DEMUX circuits arranged in the non-display area. Each pixel includes x sub-pixels, and the data line is electrically connected to the sub-pixel. Each DEMUX circuit includes signal output terminals electrically connected to the data lines. The DEMUX circuits include M first DEMUX circuits and N second DEMUX circuits. Each first DEMUX circuit includes a first signal input terminal and al first signal output terminals. Each second DEMUX circuit includes a second signal input terminal and b1 second signal output terminals. H*x=M*a1+N*b1, where H, x, M, N, a1, and b1 are positive integers, M>N, a1>2, b1?2, a1>b1, and (M+N) is an even number.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: February 21, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yana Gao, Xingyao Zhou, Yue Li, Xinzhao Liu
  • Patent number: 11575089
    Abstract: The present disclosure belongs to the technical field of organic light-emitting diods (OLEDs), and provides a compound used as an electron transmission material of OLEDs. Molecules of the compounds include an aromatic ring (or aromatic fused ring) and a phenanthroline group that are connected to each other. In an embodiment, the compound according to the present disclosure includes two types of groups, i.e., an aromatic ring (or aromatic fused ring) and a phenanthroline (or benzoquinoline) group. These two groups not only have good electron accepting ability, but also can be well doped with metals. The planarity of the two groups is conducive to the stacking of molecules, which facilitates the combination of holes and electrons and generates excitons, thereby increasing the electron mobility of the material and improving efficiency of device.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: February 7, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Yan Lu
  • Patent number: 11568819
    Abstract: A pixel driving circuit, a method for driving the same and a display panel are provided. In an embodiment, the pixel driving circuit includes: a driving circuit; a light-emitting circuit including a first electrode and a first reset circuit. In an embodiment, a working timing sequence of the pixel driving circuit includes working periods, one of which includes first and second light-emitting stages. In an embodiment, the first and second light-emitting stages each include a reset stage and a light-emitting stage, wherein, during the reset stage of the first light-emitting stage, the first reset circuit transmits a first reset voltage to the first electrode of the light-emitting circuit and during the reset stage of the second light-emitting stage, the first reset circuit transmits a modification reset voltage to the first electrode of the light-emitting circuit, the modification reset voltage being different from the first reset voltage.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: January 31, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Jian Kuang, Xingyao Zhou, Yana Gao, Mengmeng Zhang, Gaojun Huang
  • Patent number: 11561664
    Abstract: A touch display panel and a touch display device are provided, relate to the field of display technology. In an embodiment, the touch display panel includes a plurality of first touch electrode units and a plurality of second touch electrode units. In an embodiment, each of the first touch electrode units includes first touch electrodes and first connection portions alternately arranged in a first direction. In an embodiment, each of the first touch electrodes includes at least one first touch electrode sub-unit that includes a plurality of first electrode sub-groups. In an embodiment, each of the first electrode sub-groups includes at least one first sub-electrode. In an embodiment, in each of the at least one first touch electrode sub-unit, the first sub-electrodes of two adjacent first electrode sub-groups have gradually increasing lengths and gradually decreasing widths in a direction from one of the first connection portions closest to the first touch electrode sub-unit to the first touch electrode.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: January 24, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Qibing Wei, Min Chen, Xinzhao Liu
  • Patent number: 11564315
    Abstract: A flexible circuit board and a display panel are provided. The flexible circuit board includes a circuit board substrate layer, devices, a fluorinated-liquid solidification layer, and an insulating film. The devices are disposed on the circuit board substrate layer. Surfaces of the devices away from the circuit board substrate layer are covered with fluorinated liquid. The insulating film includes an insulating film substrate layer and a fluorine-containing adhesive layer. The fluorine-containing adhesive layer includes a resin adhesive and a fluorine-containing substance, and is in contact with the fluorinated liquid.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: January 24, 2023
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Di Liu, Qiwen Zu, Mingyan Huang
  • Publication number: 20230005426
    Abstract: A display apparatus and a method for driving the same are provided. The display apparatus includes pixel circuits and a threshold detection module. The pixel circuit includes a driving transistor and a data voltage writing module including an output terminal electrically connected to the driving transistor. The threshold detection module is configured to detect a threshold voltage of the driving transistor. An operating process of the pixel circuit includes a first phase and a second phase. The first phase includes a data writing phase and a light-emitting phase. The second phase includes an adjusting phase and a light-emitting phase. The driving transistor receives a data voltage during the data writing phase. During the adjusting phase, the driving transistor receives an adjusting voltage corresponding to the threshold voltage of the driving transistor that is detected by the threshold detection module.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 5, 2023
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Yana GAO, Xingyao ZHOU
  • Patent number: 11545530
    Abstract: An organic light-emitting display panel having a display area and a non-display area surrounding the display area and includes a base substrate, an organic light-emitting layer, a pixel definition layer, and a microlens layer that are located in the display area is disclosed. The organic light-emitting layer is located at a side of the base substrate and includes light-emitting units. The pixel definition layer includes first openings, and each light-emitting unit is located in one of the first openings. The microlens layer is located at a side of the pixel definition layer facing away from the base substrate and includes at least one first microlens. An orthogonal projection of the first microlens on the base substrate is located between orthogonal projections of two adjacent first openings on the base substrate.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: January 3, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Guofeng Zhang, Junqiang Wang, Jiaxin Li, Quanpeng Yu
  • Publication number: 20220416215
    Abstract: Embodiments of the present disclosure provide a display panel and a display device. The display panel includes a substrate, sub-pixels located on a side of the substrate and including light-modulating sub-pixels and non-light-modulating sub-pixels, and light-modulating structures located on sides of the sub-pixels facing away from the substrate. The light-modulating structure includes light-extracting portions and a high refractive index layer. A first distance L1 between the light-extracting portion and the light-modulating sub-pixel closest to the light-extracting portion and a second distance L2 between the light-extracting portion and the non-light-modulating sub-pixel closest to the light-extracting portion satisfy L1<L2.
    Type: Application
    Filed: September 2, 2022
    Publication date: December 29, 2022
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventor: Jiamin Guo
  • Patent number: 11537161
    Abstract: A display panel and a display device are provided in the present disclosure. The display panel, including a display region and a non-display region, includes a first base substrate and a second base substrate. The display panel further includes a sealing adhesive between the first base substrate and the second base substrate. The sealing adhesive is disposed in the non-display region by surrounding the display region and includes a main body part and a plurality of first extension parts connected to the main body part. The plurality of the first extension parts is between the main body part and the display region. The display panel further includes a first reflective metal part in the non-display region, where at least a portion of the first reflective metal part surrounds the display region, and includes a plurality of second reflective metal parts, arranged along a first direction, in the non-display region.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: December 27, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Min Chen, Xinzhao Liu
  • Patent number: 11538891
    Abstract: A display panel, a method for fabrication a display panel, and a display device are provided. The display panel includes a display area, and a non-display area surrounding the display area and a first bezel area being in the non-display area; a substrate; a wiring layer, disposed on the substrate and in the non-display area, and including at least one first lead and at least one second lead, and at least a partial line segment of the at least one first lead and at least a partial line segment of the at least one second lead are disposed in the first bezel area; a polarizer disposed on a side of the wiring layer away from the substrate; and a first light-emitting layer, at least distributed in the first bezel area and, along a direction perpendicular to the substrate, disposed between the substrate and the wiring layer.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 27, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Zi Xu, Xinzhao Liu, Liujing Fan