Patents by Inventor Ping-Yu Tsai

Ping-Yu Tsai 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).

  • Publication number: 20240319536
    Abstract: The display device includes a backlight module, a light switching layer and a color filtering layer. The backlight module includes a plurality of micro light emitting units, wherein each of the micro light emitting units is independently controlled to emit a light. The light switching layer is located above the backlight module, wherein the light switching layer controls whether a light emitted from each of the micro light emitting unit of the backlight module penetrates the light switching layer or not. The color filtering layer is located above the light switching layer, wherein the color filtering layer includes a plurality of quantum dots with different colors, a color of the light emitted by each of the micro light emitting unit is converted by each of the quantum dots, and a plurality of sub-pixel units with different colors are formed by each of the quantum dots.
    Type: Application
    Filed: March 25, 2024
    Publication date: September 26, 2024
    Inventor: Ping-Yu TSAI
  • Patent number: 11770074
    Abstract: A multiphase power converter having a daisy chain control circuit and a method for controlling the same are provided. A main control circuit outputs an initial pulse width modulation signal having a plurality of initial pulses. One of a plurality of slave control circuits is connected to an output terminal of the main control circuit, and outputs a pulse width modulation signal according to the received initial pulse width modulation signal. Each of the rest of the plurality of slave control circuits outputs the next pulse width modulation signal to the next slave control circuit or the main control circuit according to the pulse width modulation signal received from the previous slave control circuit. The main control circuit automatically counts a quantity of the control circuits according to the received pulse width modulation signal and outputted initial pulse width modulation signal.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: September 26, 2023
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Ping-Yu Tsai
  • Patent number: 11716021
    Abstract: A power converter for providing a negative voltage is provided. A coupling controller circuit receives a digital control signal and provides a control signal. A reverse voltage converter circuit receives the control signal and provides a reverse voltage. The reverse voltage converter circuit includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a seventh switch, an eighth switch, a coupling control signal triggering circuit and a pulse width modulation circuit. A first reverse logic circuit is connected to a second reverse logic circuit. The second reverse logic circuit is connected to the pulse width modulation circuit and is configured to provide a trigger signal to the pulse width modulation circuit. The pulse width modulation circuit turns on or off the reverse voltage converter circuit according to the trigger signal.
    Type: Grant
    Filed: May 6, 2022
    Date of Patent: August 1, 2023
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Ping-Yu Tsai, Fu-Chuan Chen
  • Publication number: 20220321013
    Abstract: A multiphase power converter having a daisy chain control circuit and a method for controlling the same are provided. A main control circuit outputs an initial pulse width modulation signal having a plurality of initial pulses. One of a plurality of slave control circuits is connected to an output terminal of the main control circuit, and outputs a pulse width modulation signal according to the received initial pulse width modulation signal. Each of the rest of the plurality of slave control circuits outputs the next pulse width modulation signal to the next slave control circuit or the main control circuit according to the pulse width modulation signal received from the previous slave control circuit. The main control circuit automatically counts a quantity of the control circuits according to the received pulse width modulation signal and outputted initial pulse width modulation signal.
    Type: Application
    Filed: August 13, 2021
    Publication date: October 6, 2022
    Inventors: CHIH-YUAN CHEN, PING-YU TSAI
  • Publication number: 20220234074
    Abstract: The present invention discloses a manufacturing method of color filter. The method comprises the following steps. First, the method deposes a first color material on the substrate via a first pattern mask, forming a first color pattern, and a spray coating method is used for spraying a first color material on the substrate via the first pattern mask, therefore to form a first color pattern. Thereafter, the first pattern mask is removed and cleaned a first residual material of the first color material via laser or blow gun. The abovementioned steps will be repeated for three times to finish the color filter.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 28, 2022
    Inventor: PING-YU TSAI
  • Publication number: 20210167123
    Abstract: A micro LED display device includes a micro LED array, a light enhancing layer, a color filter and a polarizer. The micro LED array includes a plurality of micro LEDs, wherein each of the micro LEDs is independently controlled to emit a light. The light enhancing layer is located above the micro LED array, wherein the light enhancing layer includes a plurality of quantum dots. The color filter is located above the light enhancing layer, wherein properties of the light of each of the micro LEDs is converted by each of the quantum dots thereby projecting a plurality of sub-pixel units in the color filter. The polarizer is located above the color filter.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Inventors: PING-YU TSAI, CHUNG-CHING CHEN
  • Patent number: 10634712
    Abstract: Disclosed is a current sensing circuit to sense a current flowing through a load switch. The load switch receives a supply voltage to generate an output voltage. The current sensing circuit includes a first circuit and a second circuit. The first circuit is coupled the load switch through a first resistor, and senses the current flowing through the load switch. The second circuit is coupled to the first circuit and the load switch, senses the output voltage, and generates an adjusting current according to the output voltage. The second circuit generates the adjusting current when the output voltage is smaller than a threshold voltage, such that the ratio of the current flowing through the load switch to a current flowing through the first circuit is maintained at certain ratio, but the second circuit is disabled when the output voltage is larger than or equal to the threshold voltage.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 28, 2020
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Chih-Yuan Chen, Ping-Yu Tsai
  • Publication number: 20190271735
    Abstract: Disclosed is a current sensing circuit to sense a current flowing through a load switch. The load switch receives a supply voltage to generate an output voltage. The current sensing circuit includes a first circuit and a second circuit. The first circuit is coupled the load switch through a first resistor, and senses the current flowing through the load switch. The second circuit is coupled to the first circuit and the load switch, senses the output voltage, and generates an adjusting current according to the output voltage. The second circuit generates the adjusting current when the output voltage is smaller than a threshold voltage, such that the ratio of the current flowing through the load switch to a current flowing through the first circuit is maintained at certain ratio, but the second circuit is disabled when the output voltage is larger than or equal to the threshold voltage.
    Type: Application
    Filed: June 7, 2018
    Publication date: September 5, 2019
    Inventors: CHIH-YUAN CHEN, PING-YU TSAI
  • Publication number: 20190245006
    Abstract: A micro LED display device includes a micro LED array, a light transmission layer, a color filter and a polarizer. The micro LED array includes a plurality of micro LEDs. The light transmission layer is located above the micro LED array. The color filter is located above the light transmission layer. The polarizer is located above the color filter.
    Type: Application
    Filed: September 19, 2018
    Publication date: August 8, 2019
    Inventors: PING-YU TSAI, CHUNG-CHING CHEN
  • Publication number: 20060231195
    Abstract: A method for forming fine lines on a gas permeable and moisture absorptive material comprises the following steps: allowing a water-based resin layer to be spread on a molding plate with lines; allowing the water-based resin layer to be covered with a carrier made from a gas permeable and moisture absorptive materials; evaporating the water contained in the water-based resin layer; removing the molding plate after the water-based resin layer is hardened to be a solidified resin layer and combined with the carrier stably to cause the lines on the molding plate to be transferred onto the solidified resin layer to allow lines corresponding to the lines on the molding plate to be formed on the solidified resin layer.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 19, 2006
    Inventors: Ping-Yu Tsai, Yao-Hui Lu