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公开(公告)号:US12020622B2
公开(公告)日:2024-06-25
申请号:US17419458
申请日:2021-05-19
发明人: Wenfang Li
IPC分类号: G09G3/20
CPC分类号: G09G3/2007 , G09G2320/0242 , G09G2320/0626 , G09G2340/00
摘要: A display device and a driving method are proposed to obtain the gray value difference data of the display device when the gray value of the display device changes. So, the display device could determine the corresponding compensation data according to the gray value difference of the display device and then the compensation data and the driving data are used to drive the display device. In this way, the driving data are compensated when the display device has a variance of gray value such that the charging operation becomes sufficient to charge the display device. For example, the charging speed becomes faster to allow the display device to reach sufficient luminance such that the issues of color shifts or insufficient luminance could be avoided.
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公开(公告)号:US11948524B2
公开(公告)日:2024-04-02
申请号:US17594025
申请日:2021-07-23
发明人: Wenfang Li
CPC分类号: G09G3/36 , H02M1/44 , H02M3/156 , G09G2330/021 , G09G2330/06
摘要: The present application provides a logic circuit and a display panel. One end of a switching control module of the logic circuit is connected in series with a voltage adjusting control module, and another end of the switching control module is connected in series with a switch component of a voltage adjusting module. Also, the switching control module connected in series with the same switch component has at least two different operational currents for a corresponding switch component to have different switching speeds for alleviating the problem of excessive electromagnetic interference (EMI) occurred in a power management chip of existing LCD products.
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公开(公告)号:US11158273B1
公开(公告)日:2021-10-26
申请号:US16617306
申请日:2019-11-12
发明人: Wenfang Li , Xianming Zhang
IPC分类号: G09G3/36
摘要: A gate driver on array (GOA) driving circuit including a power management IC and a level shifter circuit connected in order, wherein the level shifter circuit at least includes a first switch transistor, a second switch transistor, a detection unit, and a clock signal output terminal, the first switch transistor is connected to the second switch transistor, and the clock signal output terminal is configured to connect to the GOA circuit, and wherein the detection unit is connected to the first switch transistor and the second switch transistor respectively, configured to detect power consumption of the first switch transistor and the second switch transistor and feedback a detection result that is configured to control an on/off state of a signal output of the power management IC.
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公开(公告)号:US12025876B2
公开(公告)日:2024-07-02
申请号:US17297968
申请日:2021-03-31
发明人: Wenfang Li
IPC分类号: G02F1/1333 , G09G3/36
CPC分类号: G02F1/133382 , G09G3/3696 , G09G2300/04 , G09G2300/0421 , G09G2320/0247 , G09G2320/041
摘要: A display panel and a display device are provided and relates to the display technology field. The display panel includes a temperature detection module, a timing control module, and a power management module. The timing control module identifies a real-time temperature of the display panel according to different combination signals outputted by the temperature detection module and controls the power management module to generate and output a corresponding common voltage according to the real-time temperature. The common voltage can follow a minimum flicker common voltage in real time.
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公开(公告)号:US11942864B2
公开(公告)日:2024-03-26
申请号:US17414348
申请日:2021-05-13
发明人: Wenfang Li
CPC分类号: H02M3/158 , G09G3/006 , H02M3/1584 , G09G2330/12 , H02M3/00 , H02M3/1582 , H02M5/00 , H02M7/00
摘要: A voltage conversion circuit and a display device are provided. The voltage conversion circuit includes a voltage conversion module, a comparison module, and a control module. The voltage conversion module includes at least two voltage conversion units, and the voltage conversion unit converts the input voltage into a target voltage. The comparison module compares each of testing voltages with a reference voltage to generate a feedback signal. The control module receives the feedback signal and controls the voltage conversion unit to convert the input voltage to the target voltage based on the feedback signal.
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公开(公告)号:US12067924B2
公开(公告)日:2024-08-20
申请号:US17609278
申请日:2021-09-07
发明人: Zhisheng Li , Dan Cao , Wenfang Li
CPC分类号: G09G3/2074 , G09G3/2096 , G09G3/3607 , G09G3/3648 , G09G2320/0209 , G09G2330/021
摘要: The present application provides a display panel and a controlling method thereof. The method includes: obtaining two grayscale values corresponding to two locations in a same frame, wherein two data voltages of the two locations are transmitted by the same data line; obtaining a grayscale threshold value, and determining a grayscale difference value according to the two grayscale values; when an absolute value of the grayscale difference value is greater than grayscale threshold value, obtaining a first voltage range, and determining the two data voltages corresponding to the two locations according to the first voltage range and the two grayscale values.
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公开(公告)号:US20230296935A1
公开(公告)日:2023-09-21
申请号:US17297968
申请日:2021-03-31
发明人: Wenfang Li
IPC分类号: G02F1/1333 , G09G3/36
CPC分类号: G02F1/133382 , G09G3/3696 , G09G2320/0247
摘要: A display panel and a display device are provided and relates to the display technology field. The display panel includes a temperature detection module, a timing control module, and a power management module. The timing control module identifies a real-time temperature of the display panel according to different combination signals outputted by the temperature detection module and controls the power management module to generate and output a corresponding common voltage according to the real-time temperature. The common voltage can follow a minimum flicker common voltage in real time.
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公开(公告)号:US11705055B2
公开(公告)日:2023-07-18
申请号:US17255505
申请日:2020-12-18
发明人: Wenfang Li
CPC分类号: G09G3/32 , G09G3/006 , G09G2330/028 , G09G2330/12
摘要: The present disclosure provides a display device. The display device includes at least one display panel including at least one light-emitting diode (LED) light board, a drive control module connected to the LED light board, and a detecting module respectively connected to the LED light board and the drive control module. The LED light board includes at least one LED. The drive control module is configured to drive the LED of the LED light board to display.
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公开(公告)号:US11205359B2
公开(公告)日:2021-12-21
申请号:US16626332
申请日:2019-11-22
发明人: Wenfang Li , Dan Cao
IPC分类号: G09G3/00
摘要: An electrical level shifting chip and a display device are provided. The electrical level shifting chip includes an electrical level shifting module, an overcurrent protecting module, and a controlling module. The control module is configured to detect whether the electrical level shifting chip is in an electrostatic discharge test mode and to disable the overcurrent protecting module when the electrical level shifting chip is in the electrostatic discharge test mode. Avoid the overcurrent protecting module from being disturbed and causing malfunction during an electrostatic discharge test.
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公开(公告)号:US20240029620A1
公开(公告)日:2024-01-25
申请号:US17615086
申请日:2021-11-02
发明人: Wenfang Li
IPC分类号: G09G3/20
CPC分类号: G09G3/2092 , G09G2310/08 , G09G2330/021
摘要: A display power-supplying module and a display device. The display power-supplying module includes a timing controller configured to generate a load signal according to a picture signal; a power supply electrically connected to the timing controller, wherein the power supply is configured to have a plurality of power-supplying channels, and at least one of the plurality of power-supplying channels is enabled to transmit electrical signals according to the load signal; and an integration circuit electrically connected to the plurality of power-supplying channels of the power supply, wherein the integration circuit is configured to generate an analog positive power source according to the electrical signals transmitted by the at least one power-supplying channel that is enabled.
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