Patents Assigned to WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
  • Patent number: 11812660
    Abstract: An organic compound, an electroluminescent material and its application are provided in the present disclosure. The organic compound includes a structure: X is selected from O, S, N—RN1, and CRC1RC2; Y is selected from O, S, N—RN2, CRC3RC4, O?S?O, SiRS1RS2, O?P—Ar1, and S?P—Ar2, RN1, RN2, RC1, RC2, RC3, RC4, RS1, and RS2 are each independently selected from C1˜C20 linear or branched alkyl, C6˜C40 aryl, and C3˜C40 heteroaryl; Ar1 and Ar2 are each independently selected from C6˜C40 aryl and C3˜C40 heteroaryl; L1, L2, L3, L4, and L5 are each independently selected from a single bond, C6˜C40 arylene, and C3˜C40 heteroarylene; R1, R2, R3, R4, and R5 are each independently selected from deuterium, C1˜C20 linear or branched alkyl, C1˜C20 alkoxy, C1˜C20 alkylthio, C3˜C20 cycloalkyl, C6˜C40 aryl, C3˜C40 heteroaryl, and C6˜C40 arylamino; and n1, n2, n3, n4, n5, m1, m2, m3, m4, and m5 are integers each independently selected from 0-2.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: November 7, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Quan Ran, Wei Gao, Lei Zhang, Wenpeng Dai
  • Patent number: 11810514
    Abstract: A display panel, a method for driving the same, and a display apparatus are provided. A pixel driving circuit includes a driving transistor, a data writing circuit, and an adjusting circuit. The driving transistor has a gate electrically connected to a first node, and first and second electrodes respectively electrically connected to a second node and a third node. An operating period of the pixel driving circuit comprises a data writing period including first and second adjusting stages and a data writing period between the first and second adjusting stages. A data writing circuit is configured to provide a data signal to the second node during the data writing period. An adjusting circuit is configured to provide a first adjusting signal to the second node or the third node during the first adjusting stage, and to provide a second adjusting signal to the second node during the second adjusting stage.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: November 7, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Yana Gao, Xingyao Zhou, Yue Li
  • Patent number: 11804161
    Abstract: Display panel and display device are provided. The display panel includes a first light-transmitting group, a first non-display area, and a display area; and a plurality of pixel driving circuits and a plurality of drive signal lines. The first non-display area surrounds the first light-transmitting group, the display area surrounds the first non-display area, and the first light-transmitting group includes at least two first light-transmitting areas arranged along a first direction. The plurality of pixel driving circuits is in the display area, a pixel driving circuit of the plurality of pixel driving circuits includes a data writing module, and a drive signal line of the plurality of drive signal lines is electrically connected to a control terminal of the data writing module.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: October 31, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yana Gao, Xingyao Zhou, Gaojun Huang
  • Patent number: 11804183
    Abstract: A display panel, a driving method of a display panel, and a display device are provided. The display panel includes pixel circuits and a gate driving circuit including cascaded first shift register units. A trigger signal input terminal of the first stage first shift register unit is connected to a trigger signal terminal through a first switch element. A signal output terminal of the i-th stage first shift register unit is connected to a trigger signal input terminal of the (i+1)-th stage first shift register unit through a second switch element. A trigger signal input terminal of the N-th stage first shift register unit is connected to the trigger signal terminal through a third switch element. A signal output terminal of the j-th stage first shift register unit is connected to a trigger signal input terminal of the (j?1)-th stage first shift register unit through a fourth switch element.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: October 31, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Mengmeng Zhang, Yue Li, Yuantao Wu, Jing Huang
  • Publication number: 20230335564
    Abstract: An array substrate, a display panel and a display device are provided. The array substrate includes: a substrate, a pixel circuit arranged on one side of the substrate and a body part. The pixel circuit includes a driving transistor and a threshold compensation transistor, a first electrode of the threshold compensation transistor is connected to a gate of the driving transistor, and a second electrode of the threshold compensation transistor and a first electrode of the driving transistor are both connected to a connection part. The body part is electrically connected to a power supply voltage signal end. An orthographic projection of the connection part on the substrate at least partially overlaps with an orthographic projection of the body part on the substrate.
    Type: Application
    Filed: June 15, 2023
    Publication date: October 19, 2023
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Xingyao ZHOU, Yana GAO, Mengjia HE, Wei LIU, Kang YANG, Yuantao WU
  • Publication number: 20230326383
    Abstract: A shift register includes a plurality of cascaded shift register circuits. The first control module of a shift register circuit controls the potential of a first node according to a first clock signal, a second clock signal, and the potential of the first node. A second control module controls the potential of a second node according to the first level signal of a third clock signal and the potential of the first node. An output module controls, according to the potential of the first node, the time of outputting the first level signal and controls, according to the potential of the second node, the time of outputting a second level signal. In a data writing phase, the third clock signal includes a plurality of effective pulses. In at least in a first retention frame, the third clock signal is an ineffective fixed level.
    Type: Application
    Filed: June 2, 2023
    Publication date: October 12, 2023
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng ZHANG, Yue LI
  • Publication number: 20230326402
    Abstract: A display panel including pixel circuits each including a drive transistor and a first reset transistor; first signal line including an indirect-connection signal line and a direct-connection signal line; connection signal lines, at least part of which is electrically connected to the indirect-connection signal lines; anodes; a pixel circuit group including two pixel circuits at least partially symmetric and adjacent, the first reset transistors of two pixel circuits being adjacent to each other, and adjacent first reset transistors being connected through a first semiconductor connection line, which is connected to the reset signal line; and pixel columns, two sides of the drive transistors in a pixel column being provided with two first signal lines and two second connection signal lines. At least part of the anodes overlaps with adjacent first signal lines and/or two adjacent second connection signal lines.
    Type: Application
    Filed: May 31, 2023
    Publication date: October 12, 2023
    Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Lin ZHANG, Xian CHEN
  • Publication number: 20230326391
    Abstract: Provided are a drive module, a voltage generation method thereof, and a display device. The drive module includes a mainboard, a power chip, and a driver chip. The driver chip includes a main control unit and a base voltage generation unit. The main control unit is configured to determine the target value of a base voltage in the current drive display mode according to the current drive display mode, determine the optimal voltage multiplying relationship of the base voltage in the current drive display mode according to an analog reference voltage signal and the target value of the base voltage, calculate the actual output value of the base voltage according to the analog reference voltage signal and the optimal voltage multiplying relationship, and generate first instruction information including the actual output value. The base voltage generation unit generates the corresponding base voltage according to the first instruction information.
    Type: Application
    Filed: May 24, 2023
    Publication date: October 12, 2023
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Yang YANG, Lei SUO, Chaoqun ZHU
  • Patent number: 11780846
    Abstract: A compound having a structure represented by Formula I, and an organic electroluminescent device and an electronic apparatus including the same. The compound may be used as a hole transport material of an organic electroluminescent device. The compound provided by the present disclosure has a shallow LUMO, an appropriate HOMO energy level and a high triplet energy level ET, and can effectively improve hole transport ability, and block electron transition and exciton transport; meanwhile, the compound has high electron mobility, and excellent thermal stability and thin film stability. The compound provided by the present disclosure is used as the hole transport material of an organic electroluminescent device, so that the material has good solubility and appropriate mobility and the inter-pixel cross-talk is effectively avoided, which is conducive to improving light emitting efficiency and lifetime of the device.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: October 10, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang, Wenjing Xiao
  • Patent number: 11785841
    Abstract: A compound having a D-(?)-?-(?)-A chemical structure and improving brightness and efficiency of light-emitting is described.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 10, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wenpeng Dai, Wei Gao, Jinghua Niu, Lei Zhang, Yang Li, Dongyang Deng, Ping An
  • Publication number: 20230316976
    Abstract: A display device including a display panel having a display area. The display panel includes pixel circuits located in the display area. Each pixel circuit includes a driving transistor and a voltage regulating module that is configured to adjust a node voltage of the driving transistor by a voltage provided by one voltage regulating signal line of voltage regulating signal lines. The pixel circuits have data refresh frequencies including first and second frequencies. The first frequency is greater than the second frequency. When one pixel circuit performs data refreshing at the first frequency, one voltage regulating signal line is configured to provide a first voltage, and when one pixel circuit performs data refreshing at the second frequency, one voltage regulating signal line is configured to provide a second voltage not equal to the first voltage.
    Type: Application
    Filed: April 25, 2023
    Publication date: October 5, 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: 11768397
    Abstract: A touch display panel has a first region and a second region. The touch display panel includes a first touch unit located in the first region, and a plurality of second touch units located in the second region, wherein the plurality of second touch units is arranged in a matrix in a first direction and a second direction, the first direction intersecting the second direction. An area of an orthographic projection of the first touch unit on a plane of the touch display panel is smaller than an area of an orthographic projection of one second touch unit of the plurality of second touch units on the plane of the touch display panel. An absolute value of a difference between an impedance of the first touch unit and an impedance of the one second touch unit is smaller than a first preset threshold.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: September 26, 2023
    Assignee: Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Kunxiang Huang, Wei Liu, Peng Zhang
  • Patent number: 11769452
    Abstract: A display panel, a method for driving the same, and a display apparatus are provided. The display panel includes data signal lines and pixel circuits. The pixel circuit includes a driving module and a data voltage writing module. The data voltage writing module is connected between the data signal line and the input terminal of the driving module. The display panel has first and second phases when displaying one frame of an image. 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. During the data writing phase, the data voltage writing module is turned on, and the data signal line transmits the data voltage. During the adjusting phase, the data voltage writing module is turned on, and the data signal line transmits the adjusting voltage corresponding to the data voltage transmitted during the data writing phase.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: September 26, 2023
    Assignee: Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Jian Kuang, Mengmeng Zhang, Xingyao Zhou
  • Publication number: 20230298526
    Abstract: Provided are display panel, method for driving same, and display device. Display panel includes pixel circuit and cascaded first shift circuits. Pixel circuit includes drive transistor and adjusting module electrically connected to first scan line, adjusting line and first electrode of drive transistor. First shift circuit is electrically connected to first scan line and includes first control module and first output module. First control module is electrically connected to first type-A clock line, first shift control line and first control node, and configured to write first shift control signal into first control node in response to first type-A clock signal from first type-A clock line. First output module is electrically connected to first control node, first type-B clock line and first scan line, and configured to write first type-B clock signal into first scan line in response to signal of first control node.
    Type: Application
    Filed: May 24, 2023
    Publication date: September 21, 2023
    Applicants: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng Zhang, Gaojun Huang, Xingyao Zhou, Yue Li
  • Publication number: 20230298513
    Abstract: Provided are a display panel, a driving method, and a display device. The display panel includes: a gate driving circuit, a pixel driving circuit, and a light-emitting component. The pixel driving circuit includes a driving transistor, a data writing module, a threshold compensation module, and a light-emitting control module. A control terminal of the threshold compensation module and a control terminal of the light-emitting control module are electrically connected to a same gate driving circuit. The light-emitting control module includes a first light-emitting control unit and a second light-emitting control unit. The pixel driving circuit further comprises a blocking module which is electrically connected between the first power signal terminal and the first terminal of the driving transistor, and is connected in series to the first light-emitting control unit.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 21, 2023
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng ZHANG, Jieliang LI, Xingyao ZHOU, Yue LI, Lilian KUANG
  • Patent number: 11763734
    Abstract: A display panel and a display apparatus are provided. The display panel includes data lines located in a display region, and a power bus, connection traces, and a control circuit that are located in a non-display region. The connection trace at least partially overlaps with the power bus in a direction perpendicular to a plane of the display panel, and has a first area that is an overlapping area between the connection trace and the power bus. The control circuit includes control transistors. A first electrode and/or a second electrode of the control transistor is coupled to the connection trace. The control transistors include a first control transistor and a second control transistor. The connection trace coupled to the first control transistor and the connection trace coupled to the second control transistor have different first areas. Channel areas of the first control transistor and the second control transistor are different.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: September 19, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Xingyao Zhou, Yana Gao, Wei Liu, Kang Yang, Jian Kuang
  • Patent number: 11763746
    Abstract: A display panel, a method for driving the same, and a display apparatus are provided. The display panel includes an emission driving circuit that includes cascaded emission driving units. The emission driving unit includes a control module including a control transistor. The control transistor provides a signal of an adjustment signal terminal to a first node in response to a signal of a first control signal terminal, so as to turn off a first output module. A voltage difference between any two of a control electrode, a first electrode or a second electrode of the control transistor is smaller than or equal to a preset threshold, and/or a duration in which a voltage difference between any two of the control electrode, the first electrode or the second electrode of the control transistor is greater than the preset threshold is smaller than or equal to a preset duration.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: September 19, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng Zhang, Yue Li
  • Patent number: 11758809
    Abstract: A compound having a structure shown in Chemical Formula 1 is described. In an embodiment, Ar is C6-C20 aryl or C5-C20 heteroaryl; D1 and D2 are electron-donating groups, A1 and A2 are electron-accepting groups, and m, n, p and q are 1, 2, or 3; D1 and D2 are a substituted or unsubstituted C1-C20 alkyl, a substituted or unsubstituted C3-C20 cycloalkyl, a substituted or unsubstituted C1-C20 alkoxy, a substituted or unsubstituted C3-C20 heterocyclic group, a substituted or unsubstituted C6-C40 aryl, a substituted or unsubstituted C4-C40 heteroaryl, a substituted or unsubstituted C10-C60 fused aryl, a substituted or unsubstituted C10-C60 fused heteroaryl, a substituted or unsubstituted C12-C40 carbazolyl, a substituted or unsubstituted C12-C40 diphenylamino group, or a C13-C40 acridinyl; and A1 and A2 are each a nitrogen-containing heterocyclic group, a cyano-containing group, a carbonyl-containing group, a sulfone-based group, and a phosphoroso-containing group.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: September 12, 2023
    Assignees: Shanghai Tianma AM-OLED Co., Ltd., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Wei Gao, Wenjing Xiao, Lei Zhang, Jinghua Niu, Wenpeng Dai
  • Patent number: 11756492
    Abstract: A display panel, a stage circuit, and a driving method of the stage circuit are provided. The stage circuit includes cascaded shift register circuits. Each cascaded shift register circuit includes: a first control module, a second control module, and an output module. The first control module receives an input signal and a charging signal, and generates a voltage signal at a second node in response to a first clock signal and a voltage signal at a first node. With an exception of a first stage cascaded shift register circuit, a first transistor of a current stage cascaded shift register circuit has a first end connected to a signal output terminal of a previous stage cascaded shift register circuit, a second end connected to the second node, and a control end connected to the first node.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: September 12, 2023
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH, TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Yue Li, Dong Qian, Gang Liu
  • Patent number: 11756483
    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: Grant
    Filed: September 8, 2022
    Date of Patent: September 12, 2023
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Yana Gao, Xingyao Zhou