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公开(公告)号：US11531422B2
公开(公告)日：2022-12-20
申请号：US17406149
申请日：2021-08-19
发明人： Houfu Gong , Miao Chen , Chuan Liu , Jun Li , Zhihua Yu
摘要： Disclosed are touch display panel, method for driving touch display panel, and display device. The touch display panel includes display region including plurality of touch driver electrodes and plurality of touch sensing electrodes both arranged in array, and non-display region surrounding display region and including touch auxiliary circuit and touch driver circuit. When refresh frequency is first frequency, touch driver circuit configured to provide touch drive signal for each touch driver electrode in touch stage, and receive touch sensing signal returned by each touch sensing electrode to determine touch position according to touch sensing signal. When refresh frequency is the first frequency, touch auxiliary circuit configured to provide first voltage signal for each touch driver electrode in touch stage; and voltage of first voltage signal greater than voltage of touch drive signal. The present disclosure can increase report rate, and satisfy touch and display requirements for high refresh frequency.
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公开(公告)号：US10824261B1
公开(公告)日：2020-11-03
申请号：US16729214
申请日：2019-12-27
发明人： Houfu Gong , Han Wu , Zhihua Yu
摘要： Provided is a display module, including: a display panel having a first binding area and a flexible circuit board having a second binding area. First binding pins provided in the first binding area are correspondingly bound to second binding pins provided in the second binding area. First and second test boards are provided in the first and second binding areas, respectively, and the first and second test boards overlap while being insulated from each other. A driving chip fixed to the flexible circuit board includes a touch sensing pin and a touch driving pin. The touch driving pin is configured to output a touch driving signal and the touch sensing pin is configured to receive a touch sensing signal. One of the first test board and the second test board is electrically connected to the touch sensing pin, and the other one is electrically connected to the touch driving pin.
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公开(公告)号：US11871511B2
公开(公告)日：2024-01-09
申请号：US17003308
申请日：2020-08-26
发明人： Han Wu , Houfu Gong , Zhenhua Liang , Xiang Huang
CPC分类号： H05K1/0268 , G01R31/2818 , H01R12/592 , H01R12/61 , H05K1/111 , H05K3/0052 , H05K3/0097 , H05K3/303 , H05K3/403 , H05K2201/09781 , H05K2201/10015 , H05K2201/10022
摘要： Provided are a flexible circuit mother board and a detection method. The flexible circuit mother board includes flexible circuit daughter boards, at least one detection terminal group and external pad groups corresponding to the flexible circuit daughter boards in one-to-one correspondence. Each flexible circuit daughter board has a bonding pad area adjacent to a corresponding one of the plurality of external pad groups. Each detection terminal group detects at least one flexible circuit daughter board, and each of the at least one detection terminal group comprises a plurality of detection terminals. Each flexible circuit daughter board includes a plurality of capacitors including a first electrode plate and a second electrode plate. Each of the first electrode plate and the second electrode plate is electrically connected to one detection terminal.
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公开(公告)号：US11687200B2
公开(公告)日：2023-06-27
申请号：US17019773
申请日：2020-09-14
发明人： Houfu Gong , Zhenhua Liang , Han Wu , Zhenyuan Zhang , Jun Li , Zhihua Yu
CPC分类号： G06F3/0443 , G06F3/0412 , G06F3/0446 , G06F3/041662 , G06F2203/04103 , G06F2203/04111 , G06F2203/04112 , H04N23/57
摘要： A display panel, a display device and a control method are provided. The display panel includes a display area and a non-display area, a base substrate, and touch electrodes on a side of the base substrate facing a light-exiting surface of the display panel. The display area includes a first display area and a second display area that at least partially surrounds the first display area, the touch electrodes are at least distributed in the display area, the touch electrodes at least include a first touch electrode located in the first display area, the first touch electrode includes at least one first touch electrode unit, and the first touch electrode unit includes at least one hollowed part, along a direction perpendicular to the base substrate, the hollowed part runs through the first touch electrode unit, and the first touch electrode is a self-capacitive touch electrode.
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公开(公告)号：US11417251B2
公开(公告)日：2022-08-16
申请号：US16730867
申请日：2019-12-30
发明人： Han Wu , Houfu Gong , Jun Li
摘要： A flexible circuit board, a display panel, a display device, and a test method are provided. The flexible circuit board includes a flexible circuit board body and a driving chip. First to third dummy terminals are provided on a surface of the flexible circuit board body. Fourth to sixth dummy terminals are electrically connected to a common node in the driving chip. An external sink current output line and an external sink current input line form an external sink current loop through the driving chip. A bonding resistance between the first and fourth dummy terminals is a first bonding resistance, and a bonding resistance between the second and the fifth dummy terminals is a second bonding resistance. The first bonding resistance and the second bonding resistance each are a resistance on the external sink current loop.
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