Patents by Inventor Wenfang LI

Wenfang LI 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).

  • Patent number: 12288537
    Abstract: A display device and a driving method thereof are provided. Driving current intervals from small to large are input to a plurality of horizontal display areas from being close to a source driver to far away from the source driver to realize a driving ability from small to large for the plurality of horizontal display areas. This solves a problem of gradual decrease in brightness caused by gradually increasing capacitive resistance loads of the plurality of horizontal display areas from being close to the source driver to far away from the source driver, so as to reduce brightness difference between the plurality of horizontal display areas. Therefore, the brightness of each horizontal display area is basically the same, and a display panel is prevented from displaying unevenness.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: April 29, 2025
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang Li
  • Patent number: 12175920
    Abstract: The present application discloses a driving circuit, a display panel and an electronic device. The driving circuit includes a voltage output module, a light-emitting device connected between the voltage output module and a second voltage terminal, and a brightness adjusting module connected between the light-emitting device and the voltage output module. In a light-emitting phase, the brightness adjusting module controls a frequency a first voltage signal outputted by the voltage output module applies to the light-emitting device such that the light-emitting device is changed between a light-emitting state and a non-light-emitting state.
    Type: Grant
    Filed: May 31, 2021
    Date of Patent: December 24, 2024
    Inventor: Wenfang Li
  • Patent number: 12150281
    Abstract: The air guide hood includes: an air guide hood body arranged with slideways, each slideway including a first and a second operation position; left and right side plates, where each of the left and right side plates has a side slidably provided in a corresponding slideway and rotates to the body; when fixed in the first operation positions, the left and right side plates are provided opposite to each other and are both perpendicular to the body; when detached from the first operation positions and rotated to the second operation positions, the left and right side plates are both attached to the body; and top plates, where two sides of the top plate are rotatably connected to the top of the left and the right side plates so that the top plate is supported by the left and right side plates and is higher than the body.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: November 19, 2024
    Assignee: SUZHOU METABRAIN INTELLIGENT TECHNOLOGY CO., LTD.
    Inventors: Liqiang Liu, Wenfang Li, Yaoyang Liu
  • Patent number: 12118917
    Abstract: A driving system and a display panel are provided. The driving system includes a timing controller and a driving chip. The driving chip receives the video signal and processes the video signal to output a characteristic current or a regular current to the display panel. The driving chip outputs the characteristic current to the display panel when the driving chip receives the characteristic video signal and to output the regular current to the display panel when the driving chip receives the regular video signal, and the characteristic current is smaller than regular current. The driving system of the display panel according to the present disclosure could alleviate the capacitor coupling effect caused by the large voltage jump introduced by the huge gray value difference when the display panel in a frame transition and thus improve the horizontal crosstalk of the display panel.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: October 15, 2024
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang Li
  • Patent number: 12118920
    Abstract: A display panel and a driving method thereof are provided. The display panel includes a power supply module, a driving module, a current detection module, and a control module. The current detection module detects a driving current of the driving module and outputs a first detection signal when a driving current is greater than a threshold current. The control module receives the first detection signal, regulates and outputs a first data voltage equal to a driving voltage according to the first detection signal, and transmits the first data voltage into the driving module.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: October 15, 2024
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang Li
  • Publication number: 20240296761
    Abstract: The embodiments of the present disclosure provide a control circuit, a display device, and electronic equipment. The control circuit includes a temperature detection unit, a control unit, a voltage output unit, and a thin-film transistor. The display device includes anyone control circuit described above. The electronic equipment includes anyone control circuit described above. The embodiments of the present disclosure perform temperature compensation on the output voltage, so that the liquid crystal display panel can achieve better display effects at different temperature conditions.
    Type: Application
    Filed: April 26, 2021
    Publication date: September 5, 2024
    Inventor: Wenfang LI
  • Patent number: 12067924
    Abstract: 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.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: August 20, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhisheng Li, Dan Cao, Wenfang Li
  • Publication number: 20240257785
    Abstract: A display device and a driving method thereof are provided. Driving current intervals from small to large are input to a plurality of horizontal display areas from being close to a source driver to far away from the source driver to realize a driving ability from small to large for the plurality of horizontal display areas. This solves a problem of gradual decrease in brightness caused by gradually increasing capacitive resistance loads of the plurality of horizontal display areas from being close to the source driver to far away from the source driver, so as to reduce brightness difference between the plurality of horizontal display areas. Therefore, the brightness of each horizontal display area is basically the same, and a display panel is prevented from displaying unevenness.
    Type: Application
    Filed: July 16, 2021
    Publication date: August 1, 2024
    Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang LI
  • Patent number: 12025876
    Abstract: 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.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: July 2, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang Li
  • Patent number: 12020622
    Abstract: 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.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: June 25, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang Li
  • Publication number: 20240127736
    Abstract: A display panel and a driving method thereof are provided. The display panel includes a power supply module, a driving module, a current detection module, and a control module. The current detection module detects a driving current of the driving module and outputs a first detection signal when a driving current is greater than a threshold current. The control module receives the first detection signal, regulates and outputs a first data voltage equal to a driving voltage according to the first detection signal, and transmits the first data voltage into the driving module.
    Type: Application
    Filed: April 30, 2021
    Publication date: April 18, 2024
    Applicant: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang LI
  • Patent number: 11948491
    Abstract: The present invention provides a grayscale controlling method and a display panel applied to the display panel including a backlight unit. The grayscale controlling method includes: in a frame time, acquiring a duration of a current driving current output to the backlight unit exceeding a predetermined current value, and then adjusting a grayscale value of the backlight unit as a target grayscale value.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: April 2, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventor: Wenfang Li
  • Patent number: 11948524
    Abstract: 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.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: April 2, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang Li
  • Patent number: 11942864
    Abstract: 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.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: March 26, 2024
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang Li
  • Patent number: 11922852
    Abstract: A display device and a driving system thereof are provided. The driving system of the display device includes a control module, a voltage conversion module, and a detection module which are interconnected. The detection module is added in the driving system of the display device to ensure that the voltage conversion module outputs a stable target voltage when the voltage conversion module is operated normally.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: March 5, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang Li
  • Patent number: 11908359
    Abstract: The present disclosure provides a driving circuit and a display device. An output control module of the driving circuit includes a first resistor, a second resistor, a third resistor, and a switching control unit. The switching control unit connected in series with the third resistor is connected in parallel with the second resistor, and then connected in series with the first resistor. During a first state, the switching control unit is turned off, and the driving circuit outputs a voltage Vout1. During a second state, the switching control unit is turned on, and the driving circuit outputs a voltage Vout2. An absolute value of Vout2 is greater than an absolute value of Vout1.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: February 20, 2024
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Wenfang Li
  • Publication number: 20240046846
    Abstract: A driving circuit, a driving method, and a display terminal are disclosed. A first output voltage is compared with a first starting voltage in a starting circuit in a first starting stage. If the first starting voltage is greater than the first output voltage, indicating that there is a risk of damaging a driving chip, a control unit turns off a control element to lower the first starting voltage in the starting circuit, to prevent the starting circuit outputting an excessively large voltage from damaging the driving chip in the first starting stage, so that the driving chip is protected.
    Type: Application
    Filed: January 13, 2022
    Publication date: February 8, 2024
    Applicant: Huizhou China Star Optoelectronics Display Co., Ltd.
    Inventor: Wenfang LI
  • Publication number: 20240046894
    Abstract: 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.
    Type: Application
    Filed: July 23, 2021
    Publication date: February 8, 2024
    Inventor: Wenfang LI
  • Publication number: 20240046849
    Abstract: A data signal regulating circuit and a display device are disclosed. The data signal regulating circuit is applied to a display panel including a plurality of source driver groups, a feedback unit and an regulating unit. Any two adjacent ones of the source driver groups are provided with a data signal regulating circuit. The feedback unit is used to output a feedback signal to the regulating unit according to data signal difference between two adjacent source driver groups. The regulating unit is used to regulate the data signals output from the corresponding source driver groups according to the feedback signal.
    Type: Application
    Filed: December 30, 2020
    Publication date: February 8, 2024
    Applicant: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventors: Wenfang LI, Xianming ZHANG
  • Publication number: 20240046850
    Abstract: A driving system and a display panel are provided. The driving system includes a timing controller and a driving chip. The driving chip receives the video signal and processes the video signal to output a characteristic current or a regular current to the display panel. The driving chip outputs the characteristic current to the display panel when the driving chip receives the characteristic video signal and to output the regular current to the display panel when the driving chip receives the regular video signal, and the characteristic current is smaller than regular current. The driving system of the display panel according to the present disclosure could alleviate the capacitor coupling effect caused by the large voltage jump introduced by the huge gray value difference when the display panel in a frame transition and thus improve the horizontal crosstalk of the display panel.
    Type: Application
    Filed: July 26, 2021
    Publication date: February 8, 2024
    Applicant: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wenfang LI