Patents by Inventor Chi-Fong Lee

Chi-Fong Lee 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: 12093473
    Abstract: An information handling system stylus transmits a wireless signal at a writing tip to enhance touch detection of the writing tip by a touchscreen display and receives wireless signals from the touchscreen display at a receiving antenna. To enhance control of wireless energy distributed at the writing tip, the receiving antenna is selectively coupled to the writing tip, such as by transitioning from a float of the receiving antenna to an interface with the stylus power source at transmit by the writing tip. Charge at the receiving antenna helps to shape the energy distribution from the writing tip, such as to match the energy distribution of other styluses in use at the touchscreen display.
    Type: Grant
    Filed: July 31, 2023
    Date of Patent: September 17, 2024
    Assignee: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, How-Lan Eric Lin, Yu-Chen Liu, Chi-Fong Lee, Wei-Chou Chen
  • Patent number: 12078532
    Abstract: An information handling system includes a display panel having an active area that generates visual images and an inactive area disposed outside the active area. The inactive area having an alignment mark that is invisible to a naked eye.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: September 3, 2024
    Assignee: Dell Products L.P.
    Inventors: Hong-Ji Huang, Yu-Chen Liu, Kuo-Wei Tseng, Chun-Wei Huang, Chi-Fong Lee
  • Publication number: 20240118135
    Abstract: An information handling system includes a display panel having an active area that generates visual images and an inactive area disposed outside the active area. The inactive area having an alignment mark that is invisible to a naked eye.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 11, 2024
    Inventors: Hong-Ji Huang, Yu-Chen Liu, Kuo-Wei Tseng, Chun-Wei Huang, Chi-Fong Lee
  • Publication number: 20230376132
    Abstract: An information handling system stylus transmits a wireless signal at a writing tip to enhance touch detection of the writing tip by a touchscreen display and receives wireless signals from the touchscreen display at a receiving antenna. To enhance control of wireless energy distributed at the writing tip, the receiving antenna is selectively coupled to the writing tip, such as by transitioning from a float of the receiving antenna to an interface with the stylus power source at transmit by the writing tip. Charge at the receiving antenna helps to shape the energy distribution from the writing tip, such as to match the energy distribution of other styluses in use at the touchscreen display.
    Type: Application
    Filed: July 31, 2023
    Publication date: November 23, 2023
    Applicant: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, How-Lan Eric Lin, Yu-Chen Liu, Chi-Fong Lee, Wei-Chou Chen
  • Patent number: 11797111
    Abstract: An information handling system stylus transmits a wireless signal at a writing tip to enhance touch detection of the writing tip by a touchscreen display and receives wireless signals from the touchscreen display at a receiving antenna. To enhance control of wireless energy distributed at the writing tip, the receiving antenna is selectively coupled to the writing tip, such as by transitioning from a float of the receiving antenna to an interface with the stylus power source at transmit by the writing tip. Charge at the receiving antenna helps to shape the energy distribution from the writing tip, such as to match the energy distribution of other styluses in use at the touchscreen display.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: October 24, 2023
    Assignee: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, How-Lan Eric Lin, Yu-Chen Liu, Chi-Fong Lee, Wei-Chou Chen
  • Patent number: 11662861
    Abstract: An information handling system presents visual images at a display that includes a display panel having a capacitive touch detection surface supported by an indium tin oxide layer disposed between a front layer, such as polarizer, and a display cell. To prevent excessive charge build up associated with the capacitive touch detection surface, a conductive ink is applied at the display panel perimeter and interfaced with a ground at the rear side of the display panel. In one example embodiment, a non-conductive ink insulates the conductive ink from the display panel except as desired to transfer excess charge from the indium tin oxide layer. The conductive ink may interface directly with the indium tin oxide layer or indirectly through a second non-conductive ink having greater conductivity than the insulative non-conductive ink.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: May 30, 2023
    Assignee: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, Hong-Ji Huang, Yu-Chen Liu, Chun-Wei Huang, Chi-Fong Lee
  • Patent number: 11663367
    Abstract: An information handling display presents visual images in a privacy mode that manages visual image brightness with a local processing resource when a predetermined condition is detected, such as multiple individuals in the display field of view. For example, an information handling system provides visual information to a display timing controller that includes a pulse width modulation signal to command display backlight brightness. When in a privacy mode, the timing controller or another processing resource modifies the pulse width modulation signal to command a predetermined reduced brightness, such as in a range of 30 to 50 nits of reduced brightness.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: May 30, 2023
    Assignee: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, Yu-Chen Liu, Dan Odell Boice, Hong-Ji Huang, Chi-Fong Lee
  • Publication number: 20220317784
    Abstract: An information handling system stylus transmits a wireless signal at a writing tip to enhance touch detection of the writing tip by a touchscreen display and receives wireless signals from the touchscreen display at a receiving antenna. To enhance control of wireless energy distributed at the writing tip, the receiving antenna is selectively coupled to the writing tip, such as by transitioning from a float of the receiving antenna to an interface with the stylus power source at transmit by the writing tip. Charge at the receiving antenna helps to shape the energy distribution from the writing tip, such as to match the energy distribution of other styluses in use at the touchscreen display.
    Type: Application
    Filed: March 30, 2021
    Publication date: October 6, 2022
    Applicant: Dell Products L.P.
    Inventors: Kuo-Wei Tseng, How-Lan Eric Lin, Yu-Chen Liu, Chi-Fong Lee, Wei-Chou Chen