Patents by Inventor Jinhu CAO
Jinhu CAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11411488Abstract: A method and apparatus for controlling a neutral point clamped inverter circuit, and a neutral point clamped inverter. It is detected that whether the inverter circuit operates in an abnormal state. In a case that the inverter circuit operates in the abnormal state, a control mode of the inverter circuit is changed to a specified control mode in which a transistor that may be damaged is in an off state. In this way, there is not current flowing through the transistor, avoiding damage of the transistor and thereby improving safety of the inverter circuit.Type: GrantFiled: July 17, 2020Date of Patent: August 9, 2022Assignee: SUNGROW POWER SUPPLY CO., LTD.Inventors: Peng Chen, Jinhu Cao, Wei Bie, Leiming Lin
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Publication number: 20210044198Abstract: A method and apparatus for controlling an inverter circuit, and an inverter. It is detected that whether the inverter circuit operates in an abnormal state. In a case that the inverter circuit operates in the abnormal state, a control mode of the inverter circuit is changed to a specified control mode in which a transistor that may be damaged is in an off state. In this way, there is not current flowing through the transistor, avoiding damage of the transistor and thereby improving safety of the inverter circuit.Type: ApplicationFiled: July 17, 2020Publication date: February 11, 2021Applicant: SUNGROW POWER SUPPLY CO., LTD.Inventors: Peng CHEN, Jinhu CAO, Wei BIE, Leiming LIN
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Patent number: 10565911Abstract: A device for detection of a display panel is provided in the embodiments of the disclosure, which is configured to detect signal lines on the display panel. The signal lines at least comprises a plurality of data lines which are divided into N groups; the device comprises: N shorting bars provided within an electrode lead region of the display panel to intersect the plurality of data lines, a plurality of welding pads provided on both sides of the electrode lead region, each of which shorting bars short-circuits one of the N groups of data lines together and connects with two welding pad at both ends thereof respectively, and a switch which is provided between each of the shorting bars and each of the corresponding welding pads connecting with the former on one and the same side of all the shorting bars; and N is a positive integer not less than.Type: GrantFiled: August 14, 2017Date of Patent: February 18, 2020Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTDInventors: Wei Li, Minghui Ma, Jinhu Cao, Bin Cao, Kwon Namin, Jiaxin Yu, Fengwu Yu, Mian Gao
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Patent number: 10558101Abstract: An array substrate motherboard includes a substrate including a plurality of gate lines, a plurality of gate line driving leads, a plurality of data lines, and a plurality of data line driving leads; a plurality of gate line testing leads; a plurality of data line testing leads and a plurality of data line driving leads; a plurality of gate line testing pads; a plurality of data line testing pads; and an insulating layer arranged between the data line testing leads and the data line driving leads in the trimming region. A respective one of the plurality of data line testing pads is connected with a respective one of the plurality of data line testing leads. A respective one of the plurality of data line driving leads is connected with one of the plurality of data line testing leads that penetrate through the insulating layer.Type: GrantFiled: February 13, 2019Date of Patent: February 11, 2020Assignees: BOE Technology Group Co., Ltd., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Jinhu Cao, Minghui Ma, Jiaxin Yu, Fengwu Yu, Bin Cao, Namin Kwon, Wei Li, Zhi Li, Xinlei Cao, Enke Guo
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Publication number: 20190179206Abstract: An array substrate motherboard includes a substrate including a plurality of gate lines, a plurality of gate line driving leads, a plurality of data lines, and a plurality of data line driving leads; a plurality of gate line testing leads; a plurality of data line testing leads and a plurality of data line driving leads; a plurality of gate line testing pads; a plurality of data line testing pads; and an insulating layer arranged between the data line testing leads and the data line driving leads in the trimming region. A respective one of the plurality of data line testing pads is connected with a respective one of the plurality of data line testing leads. A respective one of the plurality of data line driving leads is connected with one of the plurality of data line testing leads that penetrate through the insulating layer.Type: ApplicationFiled: February 13, 2019Publication date: June 13, 2019Applicants: BOE Technology Group Co., Ltd., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: JINHU CAO, MINGHUI MA, JIAXIN YU, FENGWU YU, BIN CAO, NAMIN KWON, WEI LI, ZHI LI, XINLEI CAO, ENKE GUO
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Patent number: 10255833Abstract: A light-on module testing device, a method for testing a light-on module and a method for testing a display panel are disclosed. The light-on module testing device includes a base, a support element disposed on the base, and a test platform disposed on the base, wherein an arm is disposed on the support element, and the arm is configured to fix a light-on module to be tested, and a tester is disposed on the test platform and the tester has a signal output end.Type: GrantFiled: April 22, 2016Date of Patent: April 9, 2019Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Wei Li, Yo Seop Cheong, Namin Kwon, Minghui Ma, Jinhu Cao, Xin Wang
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Patent number: 10254602Abstract: In some embodiments, an array substrate motherboard and a fabricating method thereof are provided. The method includes: providing a substrate including multiple gate lines, gate driving leads, data lines, and data driving leads, each gate line corresponds to one gate driving lead, each data line corresponds to one data driving lead; forming multiple gate line testing leads, each gate line testing lead is connected with a gate driving lead; forming multiple data line testing leads, each data line testing lead is connected with a subset of the multiple data driving leads; forming multiple gate line testing pads, each gate line testing pad is connected with a gate line testing lead; forming multiple data line testing pads, each data line testing pad is connected with two data line testing leads; and using the gate line testing pads and gate line testing pads to test the gate lines and data lines.Type: GrantFiled: November 7, 2016Date of Patent: April 9, 2019Assignees: BOE TECHNOLOGY GROUP CO., LTD, BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Jinhu Cao, Minghui Ma, Jiaxin Yu, Fengwu Yu, Bin Cao, Namin Kwon, Wei Li, Zhi Li, Xinlei Cao, Enke Guo
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Patent number: 10205444Abstract: A pulse width modulation (PWM) control method for a five-level inverting circuit is provided. The five-level inverting circuit includes a first capacitor, a second capacitor, a third capacitor and first to eighth switch branches. In this PWM control method, the control logic is set to enable the first and fourth switch branches to be turned on in a complementary manner, the second and fifth switch branches to be turned on in a complementary manner, the third and sixth switch branches to be turned on in a complementary manner, and the seventh and eighth switch branches to be turned on in a complementary manner, and enable the first and second switch branches to be turned on in an interlocking manner, and the sixth and fifth switch branches to be turned on in an interlocking manner.Type: GrantFiled: July 31, 2017Date of Patent: February 12, 2019Assignee: SUNGROW POWER SUPPLY CO., LTD.Inventors: Peng Chen, Jinhu Cao, Houlai Geng, Peng Wen
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Publication number: 20180197445Abstract: A device for detection of a display panel is provided in the embodiments of the disclosure, which is configured to detect signal lines on the display panel. The signal lines at least comprises a plurality of data lines which are divided into N groups; the device comprises: N shorting bars provided within an electrode lead region of the display panel to intersect the plurality of data lines, a plurality of welding pads provided on both sides of the electrode lead region, each of which shorting bars short-circuits one of the N groups of data lines together and connects with two welding pad at both ends thereof respectively, and a switch which is provided between each of the shorting bars and each of the corresponding welding pads connecting with the former on one and the same side of all the shorting bars; and N is a positive integer not less than.Type: ApplicationFiled: August 14, 2017Publication date: July 12, 2018Inventors: Wei Li, Minghui Ma, Jinhu Cao, Bin Cao, Kwon Namin, Jiaxin Yu, Fengwu Yu, Mian Gao
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Publication number: 20180159519Abstract: A pulse width modulation (PWM) control method for a five-level inverting circuit is provided. The five-level inverting circuit includes a first capacitor, a second capacitor, a third capacitor and first to eighth switch branches. In this PWM control method, the control logic is set to enable the first and fourth switch branches to be turned on in a complementary manner, the second and fifth switch branches to be turned on in a complementary manner, the third and sixth switch branches to be turned on in a complementary manner, and the seventh and eighth switch branches to be turned on in a complementary manner, and enable the first and second switch branches to be turned on in an interlocking manner, and the sixth and fifth switch branches to be turned on in an interlocking manner.Type: ApplicationFiled: July 31, 2017Publication date: June 7, 2018Inventors: Peng CHEN, Jinhu CAO, Houlai GENG, Peng WEN
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Publication number: 20180095313Abstract: In some embodiments, an array substrate motherboard and a fabricating method thereof are provided. The method includes: providing a substrate including multiple gate lines, gate driving leads, data lines, and data driving leads, each gate line corresponds to one gate driving lead, each data line corresponds to one data driving lead; forming multiple gate line testing leads, each gate line testing lead is connected with a gate driving lead; forming multiple data line testing leads, each data line testing lead is connected with a subset of the multiple data driving leads; forming multiple gate line testing pads, each gate line testing pad is connected with a gate line testing lead; forming multiple data line testing pads, each data line testing pad is connected with two data line testing leads; and using the gate line testing pads and gate line testing pads to test the gate lines and data lines.Type: ApplicationFiled: November 7, 2016Publication date: April 5, 2018Inventors: Jinhu CAO, Minghui MA, Jiaxin YU, Fengwu YU, Bin CAO, Namin KWON, Wei LI, Zhi LI, Xinlei CAO, Enke GUO
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Patent number: 9921446Abstract: The present application discloses a display panel test structure for testing whether signal lines of a display panel are defective, the signal lines at least comprising a plurality of data lines which are divided into N groups, the display panel test structure comprising N first shorting bars arranged in a test area of the display panel, each of which being configured to short-circuit a group of data lines, wherein the display panel test structure further comprises a plurality of first test pads arranged in the test area, each of which connects with one shorting bar corresponding thereto, and each of the first test pads is configured to load a signal to a group of data lines corresponding thereto during a test.Type: GrantFiled: August 3, 2016Date of Patent: March 20, 2018Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Fengwu Yu, Jinhu Cao, Minghui Ma, Bin Cao, Namin Kwon, Yanyan Wu, Wei Li, Mian Gao, Long Guo
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Patent number: 9906166Abstract: Provided are a method and a device for controlling an operation of an inverter. The method includes: determining whether a direct current side voltage of the inverter is greater than an operation voltage setting threshold; and if no, controlling the inverter to operate according to a five level control strategy; and if yes: adjusting the direct current side voltage by using a maximum power tracking algorithm; adjusting linearly a floating capacitor voltage of the inverter based on the adjusted direct current side voltage; determining whether the adjusted floating capacitor voltage is in a preset range; and if yes, controlling the inverter to operate according to a five level control strategy; and if no, controlling the inverter to operate according to a seven level control strategy.Type: GrantFiled: April 28, 2017Date of Patent: February 27, 2018Assignee: SUNGROW POWER SUPPLY CO., LTD.Inventors: Jun Xu, Jinhu Cao, Peng Chen, Peng Wang
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Publication number: 20180026549Abstract: Provided are a method and a device for controlling an operation of an inverter. The method includes: determining whether a direct current side voltage of the inverter is greater than an operation voltage setting threshold; and if no, controlling the inverter to operate according to a five level control strategy; and if yes: adjusting the direct current side voltage by using a maximum power tracking algorithm; adjusting linearly a floating capacitor voltage of the inverter based on the adjusted direct current side voltage; determining whether the adjusted floating capacitor voltage is in a preset range; and if yes, controlling the inverter to operate according to a five level control strategy; and if no, controlling the inverter to operate according to a seven level control strategy.Type: ApplicationFiled: April 28, 2017Publication date: January 25, 2018Inventors: Jun XU, Jinhu CAO, Peng CHEN, Peng WANG
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Publication number: 20170192326Abstract: The present application discloses a display panel test structure for testing whether signal lines of a display panel are defective, the signal lines at least comprising a plurality of data lines which are divided into N groups, the display panel test structure comprising N first shorting bars arranged in a test area of the display panel, each of which being configured to short-circuit a group of data lines, wherein the display panel test structure further comprises a plurality of first test pads arranged in the test area, each of which connects with one shorting bar corresponding thereto, and each of the first test pads is configured to load a signal to a group of data lines corresponding thereto during a test.Type: ApplicationFiled: August 3, 2016Publication date: July 6, 2017Inventors: Fengwu YU, Jinhu CAO, Minghui MA, Bin CAO, Namin KWON, Yanyan WU, Wei LI, Mian GAO, Long GUO
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Publication number: 20170074940Abstract: A light-on module testing device, a method for testing a light-on module and a method for testing a display panel are disclosed. The light-on module testing device includes a base, a support element disposed on the base, and a test platform disposed on the base, wherein an arm is disposed on the support element, and the arm is configured to fix a light-on module to be tested, and a tester is disposed on the test platform and the tester has a signal output end.Type: ApplicationFiled: April 22, 2016Publication date: March 16, 2017Inventors: Wei LI, Yo Seop CHEONG, Namin KWON, Minghui MA, Jinhu CAO, Xin WANG