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公开(公告)号：US12062325B2
公开(公告)日：2024-08-13
申请号：US17963847
申请日：2022-10-11
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2300/0426 , G09G2300/0452 , G09G2310/0267 , G09G2320/0233
摘要： A display panel and a display device are provided. The display panel includes pixel row groups, scanning driving circuits, first data lines and second data lines. One pixel row group includes first pixel rows and one pixel row includes a first pixel and a second pixel. A luminous efficiency of color light of the first pixel is lower than a luminous efficiency of color light of the second pixel. One scanning driving circuit includes a first sub scanning driving circuit and a second sub scanning driving circuit. In at least one image frame, a duration during which the first pixel is connected to the first data line for transmitting data voltage controlled by the first sub scanning driving circuit is larger than a duration during which the second pixel is connected to the second data line for transmitting data voltage controlled by the second sub scanning driving circuit.
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公开(公告)号：US11106311B2
公开(公告)日：2021-08-31
申请号：US16825758
申请日：2020-03-20
摘要： Provided is a display device including: a display panel including a cathode layer including a cathode electrode, and touch electrodes including a touch driving electrode; a touch driving chip electrically connected to and providing a touch driving signal to the touch driving electrode; and a signal conversion unit electrically connected to a first electrode and providing a first driving signal to the first electrode. During the charging period, the touch driving signal is charged from a first level to a second level, and the first driving signal is charged from a third level to a fourth level. During the discharging period, the touch driving signal is discharged from the second level to the first level, and the first driving signal is discharged from the fourth level to the third level. The first electrode is the cathode electrode, or located between the touch driving electrode and the cathode electrode.
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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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公开(公告)号：US12087191B2
公开(公告)日：2024-09-10
申请号：US17681518
申请日：2022-02-25
发明人： Ning Xu , Xiong Yang , Zhihua Yu
IPC分类号： G09G3/00
CPC分类号： G09G3/006 , G09G2330/12
摘要： A circuit board, a display module, and a display device are provided. The circuit board includes: a base substrate including a first surface and a second surface opposite to each other; bonding pads on the first surface; test pads electrically connected to the bonding pads and disposed on the second surface; a test auxiliary structure on the second surface; and a metal layer on the second surface. The test auxiliary structure overlaps with the test pads along a first direction which is a direction perpendicular to the first surface and the second surface of the base substrate; and the metal layer includes a metal structure for transmitting a first signal and the test auxiliary structure is insulated from the metal structure.
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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：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：US10796657B1
公开(公告)日：2020-10-06
申请号：US16673598
申请日：2019-11-04
发明人： Chuan Liu , Junjie Fu , Zhihua Yu , Tianlong Xiang
摘要： Provided is a conversion circuit, including a switch signal input terminal; first and second input terminals; and first and second output terminals. The switch signal input terminal receives a switch control signal. The first and second input terminals receive first and second input signals, and polarities of first and second input signals are different and alternately switch. Depending on the switch control signal, the first input terminal is in communication with the first output terminal and the second input terminal is in communication with the second output terminal, or the second input terminal is in communication with the first output terminal and the first input terminal is in communication with the second output terminal, so that a first output signal outputted from first output terminal has a consistent polarity at any time and a second output signal outputted from the second output terminal has a consistent polarity at any time.
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公开(公告)号：US11810521B1
公开(公告)日：2023-11-07
申请号：US17871289
申请日：2022-07-22
发明人： Xigang Liu , Shuo Tang , Zhihua Yu , Xiangyu Gao
IPC分类号： G09G3/3291
CPC分类号： G09G3/3291 , G09G2300/0452 , G09G2300/0842 , G09G2310/027
摘要： A display drive method is applied to a display panel. The display panel has a subpixel used for image display. The display drive method includes obtaining a to-be-displayed grayscale of a to-be-displayed subpixel, selecting a suitable compensation manner based on the to-be-displayed grayscale, and providing a data voltage for the to-be-displayed sub-pixel based on the selected compensation manner. The compensation manner includes a first compensation manner and a second compensation manner. When the to-be-displayed grayscale is 0 grayscale, the first compensation manner is selected. When the to-be-displayed grayscale is greater than 0 grayscale, the second compensation manner is selected. The first compensation manner is used to reduce a difference between light-emitting efficiencies of sub-pixels with different light-emitting colors under a same grayscale.
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