Patents by Inventor Yi-Yang Tsai

Yi-Yang 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: 20250110590
    Abstract: A circuit, for a touch panel, comprising N touch signal processing circuits; a backup processing circuit; and a controller, coupled to the N touch signal processing circuits and the backup processing circuit, configured to determine whether one of the N touch signal processing circuits is failed and generate a determining result, and control the N touch signal processing circuits and the backup processing circuit to process N touch signals received from the touch panel to obtain N digital signals according to the determining result.
    Type: Application
    Filed: October 2, 2023
    Publication date: April 3, 2025
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yaw-Guang Chang, Jia-Ming He, Yi-Yang Tsai
  • Patent number: 12265678
    Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.
    Type: Grant
    Filed: April 11, 2024
    Date of Patent: April 1, 2025
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Publication number: 20250096522
    Abstract: An optoelectronic device includes a first substrate, a second substrate, a photonic integrated circuit, and a laser diode. The second substrate is over the first substrate. The photonic integrated circuit is disposed on the first substrate and includes a first waveguide channel, a second waveguide channel, and a patterned structure. The first waveguide channel and the second waveguide channel are coupled to the patterned structure. The laser diode is disposed on the second substrate and configured to emit a light beam toward the patterned structure.
    Type: Application
    Filed: September 19, 2024
    Publication date: March 20, 2025
    Applicant: AuthenX Inc.
    Inventors: Sheng-Fu LIN, Po-Kuan SHEN, Yi-Ting LU, Chu-Ching TSAI, Jenq-Yang CHANG, Mao-Jen WU
  • Publication number: 20250048645
    Abstract: In some embodiments, the present disclosure relates to a memory device including a semiconductor substrate, a first electrode disposed over the semiconductor substrate, a ferroelectric layer disposed between the first electrode and the semiconductor substrate, and a first stressor layer separating the first electrode from the ferroelectric layer. The first stressor layer has a coefficient of thermal expansion greater than that of the ferroelectric layer.
    Type: Application
    Filed: October 23, 2024
    Publication date: February 6, 2025
    Inventors: Bi-Shen Lee, Tzu-Yu Lin, Yi-Yang Wei, Hai-Dang Trinh, Hsun-Chung Kuang, Cheng-Yuan Tsai
  • Patent number: 12142245
    Abstract: A control system includes a plurality of driving circuits coupled in series, which include a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a first flag signal selector. The first transmitter is coupled to the first receiver, and the first flag signal selector is coupled between the first receiver and the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver, a second transmitter and a second flag signal selector. The second transmitter is coupled to the second receiver, and the second flag signal selector is coupled between the second receiver and the second transmitter.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: November 12, 2024
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu, Yi-Yang Tsai, Po-Hsiang Fang
  • Patent number: 12100339
    Abstract: A method of scanning a display panel having a plurality of rows of pixels includes steps of: generating a first accumulated number; calculating a first scan number according to the first accumulated number; scanning a present row of pixels having the first scan number among the plurality of rows of pixels; accumulating the first accumulated number to generate a second accumulated number; calculating a second scan number according to the second accumulated number; and scanning a next row of pixels having the second scan number among the plurality of rows of pixels after scanning the present row of pixels. Wherein, the plurality of rows of pixels are scanned in a scan order different from a numbering order of the plurality of rows of pixels.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: September 24, 2024
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Yi-Yang Tsai, Po-Hsiang Fang, Jhih-Siou Cheng
  • Publication number: 20240256082
    Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.
    Type: Application
    Filed: April 11, 2024
    Publication date: August 1, 2024
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Patent number: 12051381
    Abstract: The disclosure provides a control method of a display driver. The control method includes receiving address information and defining an IC address according to the address information. The IC address includes n bits representing k zones, and n and k are positive integers. The control method further includes receiving the IC address, a black frame data signal and a pulse-width modulation (PWM) signal, and turning on or off the plurality of LEDs in the corresponding zone according to toggle of bit in the black frame data signal. Each bit in the black frame data signal indicates that a plurality of LEDs in a zone among the k zones are turned on or off.
    Type: Grant
    Filed: February 13, 2023
    Date of Patent: July 30, 2024
    Assignee: Novatek Microelectronics Corp.
    Inventors: Yi-Yang Tsai, Hung-Ho Huang, Tzong-Honge Shieh, Chieh-An Lin, Po-Hsiang Fang, Jhih-Siou Cheng
  • Patent number: 11977705
    Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: May 7, 2024
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Publication number: 20240096289
    Abstract: The disclosure provides a control method of a display driver. The control method includes receiving address information and defining an IC address according to the address information. The IC address includes n bits representing k zones, and n and k are positive integers. The control method further includes receiving the IC address, a black frame data signal and a pulse-width modulation (PWM) signal, and turning on or off the plurality of LEDs in the corresponding zone according to toggle of bit in the black frame data signal. Each bit in the black frame data signal indicates that a plurality of LEDs in a zone among the k zones are turned on or off.
    Type: Application
    Filed: February 13, 2023
    Publication date: March 21, 2024
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yi-Yang Tsai, Hung-Ho Huang, Tzong-Honge Shieh, Chieh-An Lin, Po-Hsiang Fang, Jhih-Siou Cheng
  • Patent number: 11929007
    Abstract: A display driving integrated circuit (IC) and a driving parameter adjustment method thereof are provided. The display driving IC includes a control circuit and a driving parameter determination circuit. The control circuit controls a current driving circuit and a scanning circuit according to a driving parameter, wherein the current driving circuit is suitable for driving multiple driving lines of a light emitting diode (LED) array, and the scanning circuit is suitable for driving multiple scanning lines of the LED array. The driving parameter determination circuit is coupled to the control circuit to provide the driving parameter. The driving parameter determination circuit dynamically adjusts the driving parameter for a target LED in the LED array according to a grayscale value of the target LED.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: March 12, 2024
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Wei Kang, Yi-Yang Tsai, Siao-Siang Liu, Shih-Hsuan Huang
  • Publication number: 20230341972
    Abstract: A touch event processing circuit includes receiving circuits and an average circuit. Each of the receiving circuits includes an operation amplifier, a current processing circuit, and a touch event detection circuit. The operation amplifier receives an input signal from a touch panel, and outputs a first current signal and a second current signal. The current processing circuit processes the first current signal and the second current signal according to a first current average signal and a second current average signal, to generate a processed current signal. The touch event detection circuit detects a touch event according to the processed current signal. The average circuit receives first current signals and second current signals from the receiving circuits; performs an average operation upon the first current signals, to generate the first current average signal; and performs an average operation upon the second current signals, to generate the second current average signal.
    Type: Application
    Filed: November 28, 2022
    Publication date: October 26, 2023
    Applicant: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Publication number: 20230206813
    Abstract: A display driving integrated circuit (IC) and a driving parameter adjustment method thereof are provided. The display driving IC includes a control circuit and a driving parameter determination circuit. The control circuit controls a current driving circuit and a scanning circuit according to a driving parameter, wherein the current driving circuit is suitable for driving multiple driving lines of a light emitting diode (LED) array, and the scanning circuit is suitable for driving multiple scanning lines of the LED array. The driving parameter determination circuit is coupled to the control circuit to provide the driving parameter. The driving parameter determination circuit dynamically adjusts the driving parameter for a target LED in the LED array according to a grayscale value of the target LED.
    Type: Application
    Filed: August 11, 2022
    Publication date: June 29, 2023
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chun-Wei Kang, Yi-Yang Tsai, Siao-Siang Liu, Shih-Hsuan Huang
  • Patent number: 11620017
    Abstract: A touch controller coupled to a touch sensor panel and arranged to detect touch events on the touch sensor panel includes a sensing circuit. The sensing circuit includes an integrator circuit and a reference voltage controlling circuit. The integrator circuit includes a first input node coupled to a sensing node for receiving a sensing signal, a second input node coupled to a guard trace disposed adjacent to the touch sensor panel and an output node outputting an integrated signal. The reference voltage controlling circuit includes a switch coupled between the second input node of the integrator circuit and a voltage source providing a reference voltage. The switch is closed during a pre-charge period to charge a voltage on the guard trace to the reference voltage in beginning of a sensing period and is opened after the pre-charge period.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 4, 2023
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Patent number: 11620023
    Abstract: A touch event processing circuit includes a plurality of receiving circuits and an average circuit. Each of the plurality of receiving circuits includes a first integrator circuit, a resistor, and a touch event detection circuit. The first integrator circuit is arranged to receive an input signal that includes a voltage sensing signal from a touch panel, and output a first integrated voltage signal. The resistor has a first terminal coupled to an output terminal of the first integrator circuit and a second terminal. The touch event detection circuit is arranged to detect a touch event according to the output from the second terminal of the resistor and a voltage average signal. The average circuit is arranged to: receive a plurality of first integrated voltage signals from the plurality of receiving circuits; and perform an average operation upon the plurality of first integrated voltage signals, to generate the voltage average signal.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: April 4, 2023
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Publication number: 20230005451
    Abstract: A control system includes a plurality of driving circuits coupled in series, which include a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a first flag signal selector. The first transmitter is coupled to the first receiver, and the first flag signal selector is coupled between the first receiver and the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver, a second transmitter and a second flag signal selector. The second transmitter is coupled to the second receiver, and the second flag signal selector is coupled between the second receiver and the second transmitter.
    Type: Application
    Filed: September 14, 2022
    Publication date: January 5, 2023
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu, Yi-Yang Tsai, Po-Hsiang Fang
  • Publication number: 20220374100
    Abstract: A touch controller coupled to a touch sensor panel and arranged to detect touch events on the touch sensor panel includes a sensing circuit. The sensing circuit includes an integrator circuit and a reference voltage controlling circuit. The integrator circuit includes a first input node coupled to a sensing node for receiving a sensing signal, a second input node coupled to a guard trace disposed adjacent to the touch sensor panel and an output node outputting an integrated signal. The reference voltage controlling circuit includes a switch coupled between the second input node of the integrator circuit and a voltage source providing a reference voltage. The switch is closed during a pre-charge period to charge a voltage on the guard trace to the reference voltage in beginning of a sensing period and is opened after the pre-charge period.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 24, 2022
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yi-Yang Tsai
  • Patent number: 11482160
    Abstract: A driving device and a driving method of a display panel are provided. The driving device includes a current source and a control circuit. The current source makes a driving current flow through a light-emitting element path of a sub-pixel circuit of the display panel. During a display line period, the driving current has a normal current amount, and the control circuit controls a first switch in the light-emitting element path to adjust a duty cycle of the driving current in the light-emitting element path. During a sensing period, the driving current has a sensing current amount less than the normal current amount, the control circuit turns on the first switch, and the control circuit checks a voltage in the light-emitting element path to determine whether a light-emitting element in the light-emitting element path is open (or whether the light-emitting element is provided in the light-emitting element path).
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: October 25, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Yi-Yang Tsai, Chun-Fu Lin, Po-Hsiang Fang, Jhih-Siou Cheng
  • Patent number: 11482293
    Abstract: A control system includes a plurality of driving circuits coupled in series, which includes a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a replica receiver. The first transmitter is coupled to the first receiver, and the replica receiver is coupled to an output terminal of the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver and a second transmitter. The second receiver is coupled to the first transmitter, and the second transmitter is coupled to the second receiver.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 25, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu, Yi-Yang Tsai, Po-Hsiang Fang
  • Patent number: 11327604
    Abstract: A touch sensing circuit for use in a touch sensitive device includes: an integrator, a first switching unit and a control signal generator. The integrator, coupled to at least one sensing electrode of a touch panel in the touch sensitive device, and arranged to collect charges on the at least one sensing electrode and accordingly generate an output sensed signal. The first switching unit is arranged to selectively couple a first end of the at least one sensing electrode to a reference voltage level according to a first mask signal. The control signal generator is arranged to generate the first mask signal according to a synchronization signal of a display panel in the touch sensitive device, wherein the first switching unit couples the first end of the at least one sensing electrode to the reference voltage level when the synchronization signal is asserted.
    Type: Grant
    Filed: September 7, 2020
    Date of Patent: May 10, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Jia-Ming He, Yaw-Guang Chang, Yu-Chun Lin, Yi-Yang Tsai