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公开(公告)号：US11094285B2
公开(公告)日：2021-08-17
申请号：US16675036
申请日：2019-11-05
发明人： Yang Huang , Jun Li , Zhihua Yu
IPC分类号： G09G5/02 , G09G3/3258 , G09G3/3266 , G09G5/10
摘要： A driving chip, a control method therefor and a display device are provided. The driving chip includes Gamma voltage generating circuits, first power supply voltage output circuits and a color cast adjustment circuit. The Gamma voltage generating circuits correspond to sub-pixels of different colors. The first power supply voltage output circuits are electrically connected to different Gamma voltage generating circuits and each of the first power supply voltage output circuits is configured to output a first power supply voltage to a corresponding first power supply voltage terminal. The color cast adjustment circuit is electrically connected to each first power supply voltage output circuit, and is configured to adjust the first power supply voltage output by at least one first power supply voltage output circuits according to a light-emitting duration of a light-emitting device in a display panel per unit time.
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公开(公告)号：US10984728B2
公开(公告)日：2021-04-20
申请号：US16731063
申请日：2019-12-31
IPC分类号： G09G3/32 , G09G3/3283
摘要： The present disclosure discloses a luminance compensation method, a luminance compensation circuit and a display device. When a display panel starts displaying, reference compensation factors are acquired from a flash. Then the acquired reference compensation factors are stored in and RAM. Finally, a scale factor corresponding to the current to-be-displayed frame image is acquired, and the reference compensation factors corresponding to all sub-pixels and stored in the RAM are multiplied by the scale factor to generate a target compensation factor corresponding to the current to-be-displayed frame image, to enable the display panel to perform the displaying according to the target compensation factor.
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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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公开(公告)号：US20210065633A1
公开(公告)日：2021-03-04
申请号：US16731063
申请日：2019-12-31
IPC分类号： G09G3/3283
摘要： The present disclosure discloses a luminance compensation method, a luminance compensation circuit and a display device. When a display panel starts displaying, reference compensation factors are acquired from a flash. Then the acquired reference compensation factors are stored in and RAM. Finally, a scale factor corresponding to the current to-be-displayed frame image is acquired, and the reference compensation factors corresponding to all sub-pixels and stored in the RAM are multiplied by the scale factor to generate a target compensation factor corresponding to the current to-be-displayed frame image, to enable the display panel to perform the displaying according to the target compensation factor.
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公开(公告)号：US11605349B2
公开(公告)日：2023-03-14
申请号：US17527418
申请日：2021-11-16
IPC分类号： G09G3/3258 , G09G3/3266 , G09G3/3275
摘要： Provided are a display panel and a display device. The display panel includes a pixel driving circuit and a reset control circuit. The pixel driving circuit includes a light-emitting element, a first reset module, a first control module, a data write module, a driving transistor, a second reset module and a second control module. In the initial reset stage of the pixel driving circuit, the reset control circuit is configured to control the first reset module to turn on and apply a reset voltage of the reset voltage terminal to the first electrode of the light-emitting element, and the first scan signal terminal is configured to control the second reset module to turn on and apply the reset voltage to the gate of the driving transistor.
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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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