Patents Assigned to Wuhan Tianma Micro-Electronics Co., Ltd.
  • Publication number: 20230267877
    Abstract: A display panel and a display apparatus are provided. The display panel is connected to a data driver that outputs first and second data signals sequentially through an output terminal. First and second data lines are configured to receive the first and second data signals, respectively. First and second sub-pixels are connected to the first and second data lines, respectively. A first signal line crosses the first and second data lines to form overlapping portions. A gating circuit connects the output terminal to the first and second data lines. A shielding pattern overlaps with at least one overlapping portion. The shielding pattern is configured to receive a fixed potential when the output terminal of the data driver provides a data signal to the data line through the gating circuit.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 24, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Qian Wei, Shanglong Wang
  • Patent number: 11737325
    Abstract: A display panel includes a first display region, a second display region partially surrounding the first display region, and a third display region partially surrounding the first and second display regions. The first display region has a larger light transmittance than the third display region, and the first display region includes an effective light-transmission region and a wiring region located on at least one side of the effective light-transmission region. The display panel includes first and second pixel circuits in the second display region; third pixel circuits in the third display region; first data lines, connected to the first and third pixel circuits; and second data lines, connected to the second and third pixel circuits. Each first data line includes a first sub-data line in the wiring region, a second sub-data line in the second display region, and a third sub-data line in the third display region.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: August 22, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Xingxing Yang, Yangzhao Ma, Zhiqiang Xia
  • Publication number: 20230263006
    Abstract: A display panel and a display device are provided. The display panel includes a substrate, sub-pixels, a color conversion layer, and a color filter layer. At least one sub-pixel each includes a light-emitting element. The at least one light-emitting element of the at least one sub-pixels includes at least one blue light light-emitting element. The color conversion layer is configured to convert a color of light emitted by the light-emitting element. The color conversion layer includes red and green conversion layers. The red conversion layer is configured to convert blue light into red light, and the green conversion layer is configured to convert blue light into green light. The color filter layer includes red and green color resists. In a direction perpendicular to a plane of the substrate, the red color resist overlaps the red conversion layer, and the green color resist overlaps the green conversion layer.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Sitao HUO
  • Publication number: 20230263007
    Abstract: A display panel and a display device are provided. The display panel includes a substrate, a plurality of sub-pixels, and a color conversion layer. At least one sub-pixel of the plurality of sub-pixels each includes a light-emitting element. The color conversion layer is configured to convert a color of light emitted by the light-emitting element. The at least one light-emitting element of the at least one sub-pixel includes at least one blue light light-emitting element. The color conversion layer includes a red conversion layer and a green conversion layer, the red conversion layer is configured to convert blue light into red light, and the green conversion layer is configured to convert blue light into green light. The red conversion layer and the green conversion layer have different areas or different thicknesses.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Sitao HUO
  • Patent number: 11727886
    Abstract: 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: Grant
    Filed: September 8, 2022
    Date of Patent: August 15, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yue Li, Peng Zhang, Mengmeng Zhang
  • Patent number: 11727889
    Abstract: Each of latch circuits outputs a pulse of a first kind of signal to a pixel circuit row. Shift register units serially output pulses of a second kind of signal. Each of the latch circuits receives the pulse of the second kind of signal from a first shift register unit and the pulse of the second kind of signal from a second shift register unit of a later stage than the first shift register unit. The pulse of the first kind of signal from each of the latch circuits changes from a first potential level to a second potential level in response to the pulse of the second kind of signal from the first shift register unit and changes from the second potential level to the first potential level in response to the pulse of the second kind of signal from the second shift register unit.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: August 15, 2023
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventor: Genshiro Kawachi
  • Publication number: 20230252925
    Abstract: Provided are a display panel, a crack detection method, and a display apparatus. The display panel has a display area and a non-display area surrounding the display area. The display panel includes a crack detection line located in the non-display area. The crack detection line includes a main detection line and at least one auxiliary detection line. The auxiliary detection line includes a first end and a second end each being connected to the main detection line.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 10, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Chunhui YANG, Kang YANG
  • Patent number: 11720192
    Abstract: A display panel and a display apparatus are provided in the present disclosure. The display panel includes a substrate, a display device disposed on the substrate, and a touch control device, disposed on a side of the display device away from the substrate. The touch control device includes a bridge layer, an insulation layer, and a touch control electrode layer; the bridge layer includes a plurality of bridge electrodes; and the touch control electrode layer includes touch control electrodes. A touch control electrode includes a touch control electrode portion, where along a direction perpendicular to a plane of the display panel, the touch control electrode portion at least partially overlaps a bridge electrode. The touch control electrode portion includes a plurality of touch control metal portions formed in a metal grid shape and electrically connected with each other; and the bridge electrode includes a plurality of bridge metal portions.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: August 8, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Huangyao Wu, Hongbo Zhou, Xiufeng Zhou
  • Publication number: 20230247882
    Abstract: 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: Application
    Filed: April 10, 2023
    Publication date: August 3, 2023
    Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Bing Han, Gaojun Huang, Yu Xin
  • Patent number: 11715420
    Abstract: A display device includes a light-emitting element, a driving thin-film transistor configured to control the amount of electric current to the light-emitting element, and a heater electrode. The temperature of a channel of the driving thin-film transistor is higher than the temperature of an emission region of the light-emitting element when the heater electrode is generating heat.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: August 1, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Genshiro Kawachi
  • Patent number: 11715743
    Abstract: 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: Grant
    Filed: March 4, 2021
    Date of Patent: August 1, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Zi Xu, Lin Cheng, Xinzhao Liu
  • Patent number: 11715408
    Abstract: 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: Grant
    Filed: August 2, 2022
    Date of Patent: August 1, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Mengmeng Zhang, Jing Huang
  • Publication number: 20230240121
    Abstract: A display panel and a display apparatus where a peripheral structure surrounds a light extraction structure and has a smaller refractive index than the light extraction structure. The light extraction structure includes a first portion and a second portion located at a side of the first portion away from a substrate. An area of an orthographic projection of the second portion on the substrate is greater than an area of an orthographic projection of the first portion on the substrate. The first portion includes a first sidewall, and the second portion includes a second sidewall. The first sidewall extends away from a first axis. The first axis is perpendicular to the substrate and passes through a center of the orthographic projection of the light extraction structure on the substrate.
    Type: Application
    Filed: March 28, 2023
    Publication date: July 27, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Shucheng GE
  • Publication number: 20230238395
    Abstract: A display panel and manufacturing method thereof, and a display device. The display region includes first wire and second wire. The non-display region includes third wire and fourth wire. The first wire includes first-type first wire, first-type first wire including first sub wire and second sub wire spaced apart between third wire and fourth wire. The second wire includes first-type second wire; third wire includes first repair line. The fourth wire includes second repair line, and the first sub wire and second sub wire are electrically connected to second repair line through first repair line and first-type second wire. The first wire includes second-type first wire, and second-type first wire is continuous between third wire and fourth wire; second wire includes second-type second wire, second-type second wire transmitting first common signal.
    Type: Application
    Filed: April 3, 2023
    Publication date: July 27, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Bo DONG, Dongliang DUN
  • Patent number: 11710749
    Abstract: Provided are a display panel, a manufacturing method thereof, and a display device. A first display region of the display panel includes first pixel units and first drive circuits, a second display region includes second pixel units and second drive circuits, wherein a pixel unit density of the first pixel units is less than a pixel unit density of the second pixel units, a number of first additional transistors in the first drive circuit is less than a number of second additional transistors in the second drive circuit, and an area of the orthographic projection of a channel area of the first drive transistor on the base substrate is less than an area of the orthographic projection of a channel area of the second drive transistor on the base substrate.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: July 25, 2023
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventor: Yu Cai
  • Patent number: 11705058
    Abstract: Display panels and display devices are provided. The display panel includes a functional module area and a plurality of first signal wirings arranged along a first direction. The display panel includes a first area and a second area, and along the first direction, the functional module area is disposed between the first area and the second area. The plurality of first signal wirings include a plurality of first cross-lines and a plurality of first sub-signal wirings along a second direction, the plurality of first sub-signal wirings are disposed in a display area, the plurality of first cross-lines are connected to the plurality of first sub-signal wirings, and the second direction intersects the first direction. The first area includes M first cross-lines of the plurality of first cross-lines, the second area includes N first cross-lines of the plurality of first cross-lines, and M is greater than N.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: July 18, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Rili Fei, Ruiyuan Zhou, Zhiqiang Xia, Yingjie Chen
  • Publication number: 20230222969
    Abstract: Provided are a display panel and a display device. The display panel has a display region and includes a substrate, light-emitting elements located in the display region, pixel circuits, and at least one driving circuit. The light-emitting elements, the pixel circuits and the at least one driving circuit are located at a side of the substrate. The light-emitting elements are connected to the pixel circuits, and each driving circuit includes shift registers. The pixel circuits includes at least one first pixel circuit including a first driving circuit, and the at least one first pixel circuit and at least one shift register are located in the display region. In the display region, the at least one first pixel circuit is arranged at a side of the shift registers of the first driving circuit close to an edge of the display panel.
    Type: Application
    Filed: March 23, 2023
    Publication date: July 13, 2023
    Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Chao PENG, Huifang ZHOU
  • Patent number: 11699389
    Abstract: A display panel and a display device are provided in the present disclosure. The display panel includes a plurality of pixels, including first pixels and second pixels, where each of the first pixels includes a first light-emitting element connected with a first pixel circuit; the first pixel circuit includes a first drive transistor; each of the second pixels includes a second light-emitting element connected with a second pixel circuit; and the second pixel circuit includes a second drive transistor. The display panel further includes a display region, including an optical component region and a first display region, where the first light-emitting element is in the optical component region; the second light-emitting element is in the first display region.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: July 11, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Fengyun Wu, Yawei Wang, Dongxu Xiang, Yangzhao Ma
  • Patent number: 11699373
    Abstract: 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: Grant
    Filed: March 5, 2021
    Date of Patent: July 11, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Zhiyong Xiong, Yaolin Wang, Rui Ding
  • Patent number: 11693498
    Abstract: 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: Grant
    Filed: June 30, 2021
    Date of Patent: July 4, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lin Cheng, Yingying Wu, Peng Zhang, Xinzhao Liu