Patents Assigned to WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
  • Patent number: 11404678
    Abstract: The present disclosure provides a display panel, a mask, 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 light-emitting devices arranged in the display region. The plurality of light-emitting devices includes a common layer, and no common layer is formed in the hollow region. The common layer includes at least one first common portion and at least one second common portion that are disposed in a same layer. The common layer further includes at least one uneven layer disposed between the at least one first common portion and the at least one second common portion.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: August 2, 2022
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yu Xin, Lijing Han, Yuan Li
  • Patent number: 11398172
    Abstract: A display panel is provided, including a test circuit, a display control switch and a selection circuit. In the test circuit, the test switch has a control terminal connected to the test control line, a first terminal connected to the test signal line, and a second terminal connected to the data line. In the display control circuit, the display switch has a control terminal connected to the display control line, a first terminal connected to the display signal line, and a second terminal connected to the data line. In the selection circuit, the selection switch has a control terminal connected to the selection control line, a first terminal connected to the selection signal terminal, and a second terminal connected to the display control line. The selection signal terminal provides a signal for turning off the display switch when the test switch and the selection switch are turned on.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: July 26, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Zhuan Gao, Xinzhao Liu, Mengmeng Zhang
  • Publication number: 20220229501
    Abstract: A display panel and a method for driving the same, and a display apparatus are provided. The display panel includes at least one pixel circuit, at least one light-emitting device coupled to the pixel circuit, at least one data line, and a first voltage signal line. One pixel circuit of the at least one pixel circuit includes a data writing transistor and a photodiode. The data writing transistor includes a first electrode coupled to one of the at least one data line, and a second electrode coupled to a first electrode of the photodiode. The photodiode includes a second electrode coupled to the first voltage signal line.
    Type: Application
    Filed: April 5, 2022
    Publication date: July 21, 2022
    Applicants: WUHAN TIANMA MICROELECTRONICS CO.,LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventor: Lei Suo
  • Patent number: 11393882
    Abstract: An organic light-emitting display panel and a display device are provided. The organic light-emitting display panel includes: a plurality of touch electrodes extending in a first direction and arranged in a second direction; and a plurality of first leads one-to-one corresponding to the plurality of touch electrodes. The first leads are made of a transparent conductive material. The first leads are located in a different layer from the touch electrodes. An insulation layer is disposed between the film layers where the first leads and the touch electrodes are located. Each first lead at least partially overlaps with a corresponding touch electrode in a direction perpendicular to a plane of the organic light-emitting display panel, and is electrically connected to the corresponding touch electrode through a through hole in the insulation layer. The first lead extends in the first direction and is arranged in the second direction.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 19, 2022
    Assignees: WUHAN TIANMA MICRO ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventor: Min Chen
  • Patent number: 11393408
    Abstract: The present disclosure provides a display panel and display device. The display panel includes: data lines disposed in a display area; a bonding terminal disposed in a non-display area surrounding the display area; fan-out lines; and demuxes disposed between the display area and the bonding terminal; each of the demuxes comprises at least two switch transistors; each switch transistor in one demux has a first electrode electrically connected to a corresponding data line of the data lines through a first connection line, a second electrode connected to the bonding terminal through one of the fan-out lines corresponding to the one demux, and a gate electrode electrically connected to a first clock signal line corresponding to the switch transistor; each fan-out line of the display panel overlaps the first clock signal line for an equal number of times.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: July 19, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yue Li, Xingyao Zhou, Kaihong Huang
  • Patent number: 11386829
    Abstract: A display panel and its drive method, and a display device are provided in the present disclosure. The method for driving the display panel includes refreshing a first-color picture N times in one frame. A time interval between every two adjacent refreshings of the N times of the refreshing is T1 for the first-color picture, T1=T2/N, T2 is a duration of the one frame, N>1, and N is a positive integer. The first-color picture may be refreshed multiple times in the one frame, and the multiple refreshing processes of the first-color picture may be evenly distributed, which may reduce each picture retention duration after the first-color picture is refreshed. Furthermore, before the human eyes are not able to recognize the brightness decrease of a previous first-color picture, a next first-color picture is refreshed, thereby effectively improving the picture flickering phenomenon of the display panel.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: July 12, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Nana Xiong, Jujian Fu
  • Patent number: 11385740
    Abstract: An organic light-emitting display panel and a method for driving the same, and a display device are provided. The organic light-emitting display panel includes a light-emitting driving circuit and a touch signal driving circuit. The light-emitting driving circuit is configured to provide, within a scanning duration of each frame, a light-emitting control signal having b1 light-emitting cycles and a duty cycle of a1 to each row of pixels. A display area scanning duration includes at least one touch duration during which the touch signal driving circuit provides a touch signal to the display panel and the number of rows of the light-emitting pixel-rows of the display panel remains unchanged.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: July 12, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Lin Cheng, Yingying Wu, Shuai Yang, Xingyao Zhou
  • Patent number: 11380869
    Abstract: The present disclosure provides a display panel including: a substrate; an array layer located on the substrate and including a first inorganic insulating layer, and the first inorganic insulating layer including a first recess in the non-display area; a light-emitting function layer located on the array layer; a thin film encapsulation layer on the light-emitting function layer; and an organic auxiliary layer filled in the first recess. The thin film encapsulation layer includes at least one inorganic encapsulation layer covering the display area and extending to contact and cover the organic auxiliary layer in the first recess; and the at least one inorganic encapsulation layer includes a first opening located on the organic auxiliary layer in the recess. The present disclosure further provides a method of manufacturing the display panel and a display apparatus including the display panel.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 5, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Quanpeng Yu, Zhe Li
  • Patent number: 11374078
    Abstract: An array substrate, a display panel and a display device are provided. The array substrate includes a plurality of pixel groups arranged as a matrix. The plurality of pixel groups include a plurality of first pixel groups, a plurality of second pixel groups and a plurality of third pixel groups. In odd number rows of pixel groups and odd number columns of pixel groups, the first pixel groups and the second pixel groups are alternately arranged. In even number rows of pixel groups and even number columns of pixel groups, the second pixel groups and the third pixel groups are alternately arranged. Each first pixel group includes two first sub-pixels arranged along a first direction. Each second pixel group includes two second sub-pixels arranged along a second direction; and each third pixel group includes two third sub-pixel groups arranged along the first direction.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: June 28, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventor: Yu Xin
  • Patent number: 11373599
    Abstract: An array substrate, a display panel and a display device are provided in the present disclosure. The array substrate includes a plurality of pixel circuits arranged in an array and a first signal line electrically connected to a pixel circuit of the plurality of pixel circuits. The first signal line includes a branch portion; the pixel circuit includes a storage capacitor, a drive transistor, and a first connection portion electrically connected to a gate electrode portion of the drive transistor; one plate of the storage capacitor at least partially overlaps the gate electrode portion of the drive transistor; and the branch portion at least partially overlaps the first connection portion.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: June 28, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma MicroElectronics Co., Ltd. Shanghai Branch
    Inventor: Xian Chen
  • Patent number: 11374084
    Abstract: An organic light emitting display panel and a display device are provided. The organic light emitting display panel includes: an anode power wire, the anode power wire including a first extension segment and a second extension segment, a head end of the first extension segment being electrically connected to the driving power supply, a tail end of the first extension segment being electrically connected to a head end of the second extension segment; each sub-pixel includes a light emitting device and two pixel driving circuits, anode connection terminals of the two pixel driving circuits are electrically connected to an anode of the light emitting device; anode power wire connection terminals of the two pixel driving circuits are electrically connected to the first extension segment and the second extension segment, respectively.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: June 28, 2022
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventor: Yaolin Wang
  • Publication number: 20220199024
    Abstract: Present disclosure provide a pixel circuit and a driving method, a display panel, and a display apparatus. The pixel circuit includes: a driving transistor, a gate connected to a first node, a first electrode connected to a second node, a second electrode connected to a third node; a control module, connected to the first node and including a first unit and a second unit that are connected in series, an intermediate node arranged between first unit and second unit; a voltage regulation module, wherein a driving cycle of the pixel circuit includes a writing frame and holding frame, the writing frame includes a first non-light-emission period, the holding frame includes a second non-light-emission period, and the voltage regulation module is configured to adjust, in the second non-light-emission periods in holding frame, a voltage of intermediate node electrically connected thereto to a first voltage.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng ZHANG, Jing HUANG
  • Patent number: 11366541
    Abstract: A display device and an electric apparatus are provided in the present disclosure. A touch unit of the display device includes a touch layer and an optical compensation layer arranged oppositely, the touch layer includes multiple first electrode groups and multiple second electrode groups, multiple second touch electrodes in the second electrode group are connected to each other through the optical compensation layer, and an orthographic projection of the optical compensation layer on a surface of the touch layer covers the touch layer, so that each position of the touch unit is a double-layer structure formed by the touch layer and the optical compensation layer, which avoids the problem that an electrode bridge in the display device may be visible in some cases caused by different light absorption levels in certain areas of the touch unit due to the different number of film layers.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: June 21, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Min Chen, Xinzhao Liu, Qingxia Wang
  • Patent number: 11360556
    Abstract: A display device includes an eyeball tracking inductor, a display panel and a processor, where the processor is electrically connected to the eyeball tracking inductor and the display panel separately; the eyeball tracking inductor is configured to identify user eyeball image information; the processor is configured to determine a gaze region and a split view region of a user viewing the display panel, according to the user eyeball image information, control the gaze region to be displayed at a first resolution, and control the split vision region of the display panel to be displayed at a second resolution, where the first resolution is greater than the second resolution.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: June 14, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Shuang Cheng, Jinghua Niu, Mingzhi Dai, Yinhe Liu, Yuhao Liu, Zhi Zhang, Jianyun Wang
  • Publication number: 20220169657
    Abstract: Provided are an organic compound and an application thereof. The compound has a relatively deep LUMO energy level, which may reduce a potential barrier of electron transport, improve an electron injection capability and effectively reduce a voltage of an OLED device. The compounds each have a relatively deep HOMO energy level, which may effectively block holes so that more holes and electrons are recombined in a light-emitting region, achieving relatively high luminescence efficiency. An electron transport layer material and/or a hole blocking layer material suitable for the OLED device can reduce the voltage and power consumption of the device, improve the luminescence efficiency and extend a working lifetime so that the OLED device has better comprehensive performance.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 2, 2022
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Quan RAN, Xinyuan ZHENG, Mingzhi DAI, Yuhao LIU, Shuang CHENG, Ji NAN, Xiaolei PANG, Qingsong YUAN
  • Patent number: 11349082
    Abstract: The present disclosure relates to a compound, an organic electroluminescent device, and a display device. The compound has a structure of formula (I) X is selected from a C atom, a Si atom, a B atom, or a P atom; Y1 to Y4 are each independently selected from a C atom or an N atom; A and B are each independently selected from any one or more of a substituted or unsubstituted C6-C40 aryl group and a substituted or unsubstituted C4-C40 heteroaryl group; R1 is selected from carbonyl, C1-C9 alkyl, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group; and R2 and R3 are each independently selected from any one of a C1-C9 alkyl group, a substituted or unsubstituted C6-C18 aryl group, and a substituted or unsubstituted C4-C30 heteroaryl group, and n is selected from 0 or 1.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 31, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Wenpeng Dai, Jinghua Niu, Wei Gao, Lei Zhang, Wenjing Xiao
  • Publication number: 20220165214
    Abstract: 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: Application
    Filed: February 11, 2022
    Publication date: May 26, 2022
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Zhi Liu, Yana Gao, Fei Wu, Yue Li, Xingyao Zhou, Xueqi Tian
  • Publication number: 20220165085
    Abstract: A display panel and a display apparatus are provided, which can improve the fingerprint recognition sensitivity. The display panel includes: a substrate; sub-pixels located at a side of the substrate; a fingerprint sensor located at a side of the substrate away from a light-exiting side of the display panel; and a reflective portion located between the fingerprint sensor and the sub-pixels in a direction perpendicular to a plane of the substrate, and configured to increase light intensity of light that enters the fingerprint sensor.
    Type: Application
    Filed: February 10, 2022
    Publication date: May 26, 2022
    Applicants: WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Zhiyong XIONG, Zhengxia LV
  • Patent number: 11335228
    Abstract: A scanning signal circuit, a display panel and a driving method are provided. In the scanning signal circuit, under an action of an input signal, a first target clock signal, a second target clock signal and a third target clock signal, the input signal and the second target clock signal are transmitted to a potential stabilization module, a first output module and a second output module through an input module and a potential control module; and under a stabilization function of the potential stabilization module that is applied on inputs of the first and second output modules through a high-level signal and a third target clock signal, the first output module is configured to output a first output signal, and the second output module is configured to use a fourth target clock signal to output a second output signal with high-level pulses.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 17, 2022
    Assignees: Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Mengmeng Zhang, Xingyao Zhou
  • Publication number: 20220144786
    Abstract: Provided are an organic compound and an application thereof. The compound has a relatively deep LUMO energy level and can reduce a potential barrier of electron transport, improve an electron injection ability, and effectively reduce the voltage of an OLED device. Such compounds all have relatively deep HOMO energy levels and can effectively block holes so that more holes and electrons are recombined in a light-emitting region, achieving higher luminescence efficiency. Materials of an electron transport layer and/or a hole blocking layer suitable for the OLED device can reduce the voltage and power consumption, improve the luminescence efficiency, and extend the service life of the device so that the OLED device has better comprehensive performance.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Applicants: Wuhan Tianma Microelectronics Co., Ltd., Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch
    Inventors: Quan RAN, Lei ZHANG, Wei GAO