Patents by Inventor Yip Fai Li

Yip Fai 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: 10732748
    Abstract: A PMOLED display includes a plurality of lower electrode patterns arranged in parallel in the x-axis direction, a plurality of transparent electrode patterns arranged in parallel in the y-axis direction and being perpendicular to the lower electrode patterns, and an organic compound layer interposed between the lower electrode patterns and the transparent electrode patterns. A display output and a touch sensing is performed by time-sharing a control period for the lower electrode patterns and the transparent electrode patterns into a display control period and a touch-sensor control period in every display frame time. The PMOLED display includes a driving node formed on a line for communication between the transparent electrode patterns and a display driving circuit, a touch-sensing unit connecting the driving node and a touch-sensing circuit; and a plurality of metal electrode patterns provided between the transparent electrode patterns to have a length shorter than the transparent electrode patterns.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 4, 2020
    Assignee: Soloman Systech (Shenzhen) Limited
    Inventors: Hong Jae Jang, Hyung-Cheol Shin, Il-Hyun Yun, Wah Chi Raymond Wang, Johnkid Lo, King Ho Cheung, Yip Fai Li
  • Patent number: 10707279
    Abstract: Provided is a method of sensing an illuminance in a passive matrix organic light emitting diode display, the display including a plurality of lower electrode patterns arranged in parallel, a plurality of transparent electrode patterns arranged in parallel and being perpendicular to the lower electrode patterns, and an organic compound layer interposed between the lower electrode pattern and the transparent electrode pattern, the method comprising steps of: (a) forming a predetermined voltage difference between at least one electrode patterns of the transparent electrode patterns as anodes and the lower electrode patterns as cathodes; (b) measuring the magnitude of current formed by the transparent electrode pattern and the lower electrode pattern in the step (a); and (c) measuring an illuminance using the measured current, in which a voltage supplied to the lower electrode pattern is relatively higher than that of the transparent electrode pattern in the step (a).
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: July 7, 2020
    Assignee: Solomon Systech (Shenzhen) Limited
    Inventors: Hong Jae Jang, Hyung-Cheol Shin, Il-Hyun Yun, Wai Hon Ng, Yi Nok Chan, King Ho Cheung, Yip Fai Li
  • Patent number: 10318085
    Abstract: A PMOLED touch-sensing display panel using anodes as in-cell touch sensors is provided. The anodes and the cathodes are respectively and correspondingly configured into two or more electrically isolated areas of cathodes and anodes such that the heavy parasitic capacitance due to close proximity of the anode layer and the cathode layer is eliminated, hence providing a full dynamic range in sensing the changes in capacitance due to finger touches.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: June 11, 2019
    Assignee: SOLOMON SYSTECH (SHENZHEN) LIMITED
    Inventors: Wing Chi Stephen Chan, Wai Hon Ng, Sing Ng, Hon Sheung Liu, Yip Fai Li, Wai Lan Ng, Johnkid Lo
  • Publication number: 20190102024
    Abstract: A PMOLED display includes a plurality of lower electrode patterns arranged in parallel in the x-axis direction, a plurality of transparent electrode patterns arranged in parallel in the y-axis direction and being perpendicular to the lower electrode patterns, and an organic compound layer interposed between the lower electrode patterns and the transparent electrode patterns. A display output and a touch sensing is performed by time-sharing a control period for the lower electrode patterns and the transparent electrode patterns into a display control period and a touch-sensor control period in every display frame time. The PMOLED display includes a driving node formed on a line for communication between the transparent electrode patterns and a display driving circuit, a touch-sensing unit connecting the driving node and a touch-sensing circuit; and a plurality of metal electrode patterns provided between the transparent electrode patterns to have a length shorter than the transparent electrode patterns.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Hong Jae JANG, Hyung-Cheol SHIN, Il-Hyun YUN, Wah Chi Raymond WANG, Johnkid LO, King Ho Cheung, Yip Fai LI
  • Publication number: 20190103446
    Abstract: Provided is a method of sensing an illuminance in a passive matrix organic light emitting diode display, the display including a plurality of lower electrode patterns arranged in parallel, a plurality of transparent electrode patterns arranged in parallel and being perpendicular to the lower electrode patterns, and an organic compound layer interposed between the lower electrode pattern and the transparent electrode pattern, the method comprising steps of: (a) forming a predetermined voltage difference between at least one electrode patterns of the transparent electrode patterns as anodes and the lower electrode patterns as cathodes; (b) measuring the magnitude of current formed by the transparent electrode pattern and the lower electrode pattern in the step (a); and (c) measuring an illuminance using the measured current, in which a voltage supplied to the lower electrode pattern is relatively higher than that of the transparent electrode pattern in the step (a).
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Inventors: Hong Jae JANG, Hyung-Cheol SHIN, Il-Hyun YUN, Wai Hon NG, Yi Nok CHAN, King Ho Cheung, Yip Fai LI
  • Publication number: 20190018515
    Abstract: A PMOLED touch-sensing display panel using anodes as in-cell touch sensors is provided. The anodes and the cathodes are respectively and correspondingly configured into two or more electrically isolated areas of cathodes and anodes such that the heavy parasitic capacitance due to close proximity of the anode layer and the cathode layer is eliminated, hence providing a full dynamic range in sensing the changes in capacitance due to finger touches.
    Type: Application
    Filed: October 26, 2017
    Publication date: January 17, 2019
    Inventors: Wing Chi Stephen Chan, Wai Hon Ng, Sing Ng, Hon Sheung Liu, Yip Fai Li, Wai Lan Ng, Johnkid Lo