Patents by Inventor Po-Hsiang FANG
Po-Hsiang FANG 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: 20240096289Abstract: 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: ApplicationFiled: February 13, 2023Publication date: March 21, 2024Applicant: Novatek Microelectronics Corp.Inventors: Yi-Yang Tsai, Hung-Ho Huang, Tzong-Honge Shieh, Chieh-An Lin, Po-Hsiang Fang, Jhih-Siou Cheng
-
Patent number: 11854471Abstract: The present disclosure provides a method for a display driver system and a display driver system.Type: GrantFiled: December 5, 2022Date of Patent: December 26, 2023Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Hsu-Chih Wei, Po-Hsiang Fang, Keko-Chun Liang, Che-Wei Yeh, Ju-Lin Huang
-
Patent number: 11682343Abstract: A display driver for driving a display device including a pixel array is provided. The display driver includes a plurality of driving channels. The driving channels is configured to output driving signals in a pulse width modulation manner to drive the pixel array to illuminate in a first frame period which is being divided into a plurality of subframe periods. A first driving channel of the plurality of driving channels outputs a first driving signal in a first subframe period combination. A second driving channel of the plurality of driving channels outputs a second driving signal in a second subframe period combination different than the first subframe period combination. Each of the first subframe period combination and the second subframe period combination comprises at least one subframe period of the first frame period.Type: GrantFiled: April 22, 2022Date of Patent: June 20, 2023Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Tung-Shuan Cheng, Po-Hsiang Fang, Ju-Lin Huang
-
Publication number: 20230156880Abstract: The present disclosure provides a driving circuit, configured to couple to a light emitting diode (LED) and a power supply circuit. The driving circuit includes a comparator, a serial input interface, and an integrating unit. The comparator is configured to couple to the LED and determine whether a cathode voltage of the LED is lower than a threshold value and generate a monitoring data. The serial input interface is configured to receive a serial input data from a previous driving circuit. The integrating unit is coupled to the comparator and the serial input interface and configured to integrate the monitoring data and the serial input data to generate an output data. The output data is transmitted to a following driving circuit or feedbacked to the power supply circuit in order to modulate a power voltage that the power circuit provides to the LED.Type: ApplicationFiled: February 14, 2022Publication date: May 18, 2023Inventors: Yi-Je SUEN, Po-Hsiang FANG, Jhih-Siou CHENG, Yung-Te CHANG, Hung-Ho HUANG
-
Patent number: 11651729Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.Type: GrantFiled: August 4, 2022Date of Patent: May 16, 2023Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Po-Hsiang Fang, Ju-Lin Huang
-
Patent number: 11651746Abstract: A backlight driving device and an operating method thereof are provided to drive multiple backlight zones of a backlight panel. The backlight driving device includes an interface circuit and a driving circuit. The interface circuit receives main backlight data corresponding to a first backlight zone from a former stage device. The driving circuit drives the first backlight zone according to a main current level in a display refresh period of a backlight frame period, does not drive the first backlight zone in a demotion blur period which is prior to the display refresh period, and drives the first backlight zone according to a compensation current level in a vertical blanking period which succeeds the display refresh period. The driving circuit determines the main current level according to the main backlight data, and the compensation current level is lower than the main current level.Type: GrantFiled: June 30, 2022Date of Patent: May 16, 2023Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Hung-Ho Huang, Kang-Fan Yeh, Po-Hsiang Fang
-
Publication number: 20230005451Abstract: 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: ApplicationFiled: September 14, 2022Publication date: January 5, 2023Applicant: 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: 20230005441Abstract: A backlight driving device and an operating method thereof are provided to drive multiple backlight zones of a backlight panel. The backlight driving device includes an interface circuit and a driving circuit. The interface circuit receives main backlight data corresponding to a first backlight zone from a former stage device. The driving circuit drives the first backlight zone according to a main current level in a display refresh period of a backlight frame period, does not drive the first backlight zone in a demotion blur period which is prior to the display refresh period, and drives the first backlight zone according to a compensation current level in a vertical blanking period which succeeds the display refresh period. The driving circuit determines the main current level according to the main backlight data, and the compensation current level is lower than the main current level.Type: ApplicationFiled: June 30, 2022Publication date: January 5, 2023Applicant: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Hung-Ho Huang, Kang-Fan Yeh, Po-Hsiang Fang
-
Patent number: 11521542Abstract: The present disclosure provides a method for a display driver system and a display driver system.Type: GrantFiled: November 20, 2020Date of Patent: December 6, 2022Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Hsu-Chih Wei, Po-Hsiang Fang, Keko-Chun Liang, Che-Wei Yeh, Ju-Lin Huang
-
Publication number: 20220375403Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.Type: ApplicationFiled: August 4, 2022Publication date: November 24, 2022Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Po-Hsiang Fang, Ju-Lin Huang
-
Publication number: 20220343837Abstract: A display driver for driving a display device including a pixel array is provided. The display driver includes a plurality of driving channels. The driving channels is configured to output driving signals in a pulse width modulation manner to drive the pixel array to illuminate in a first frame period which is being divided into a plurality of subframe periods. A first driving channel of the plurality of driving channels outputs a first driving signal in a first subframe period combination. A second driving channel of the plurality of driving channels outputs a second driving signal in a second subframe period combination different than the first subframe period combination. Each of the first subframe period combination and the second subframe period combination comprises at least one subframe period of the first frame period.Type: ApplicationFiled: April 22, 2022Publication date: October 27, 2022Applicant: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Tung-Shuan Cheng, Po-Hsiang Fang, Ju-Lin Huang
-
Patent number: 11482293Abstract: 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: GrantFiled: June 30, 2021Date of Patent: October 25, 2022Assignee: 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: 11482160Abstract: 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: GrantFiled: October 20, 2020Date of Patent: October 25, 2022Assignee: Novatek Microelectronics Corp.Inventors: Yi-Yang Tsai, Chun-Fu Lin, Po-Hsiang Fang, Jhih-Siou Cheng
-
Patent number: 11430382Abstract: A LED driving apparatus with differential signal interfaces is introduced, including: N-stages LED drivers, wherein the first stage LED driver receives a first data packet differential signal and a first clock differential signal and outputs a second data packet differential signal and a second clock differential signal, the Mth stage LED driver receives a Mth data packet differential signal and a Mth clock differential signal and outputs a (M+1)th data packet differential signal and a (M+1)th clock differential signal.Type: GrantFiled: August 24, 2021Date of Patent: August 30, 2022Assignee: Novatek Microelectronics Corp.Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Po-Hsiang Fang, Ju-Lin Huang
-
Patent number: 11423831Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.Type: GrantFiled: July 30, 2021Date of Patent: August 23, 2022Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Po-Hsiang Fang, Ju-Lin Huang
-
Publication number: 20220122521Abstract: 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: ApplicationFiled: October 20, 2020Publication date: April 21, 2022Applicant: Novatek Microelectronics Corp.Inventors: Yi-Yang Tsai, Chun-Fu Lin, Po-Hsiang Fang, Jhih-Siou Cheng
-
Patent number: 11295671Abstract: A display driver and a display driving method are provided. The display driving is adapted for driving a display panel and sensing an electrical characteristic of the display panel. The display driver includes a first amplifier circuit. The first amplifier circuit is coupled to the display panel. The first amplifier circuit includes a first driving circuit, a first sensing circuit and a first operational amplifier. The first operational amplifier is coupled to the display panel through a first driving line and a first sensing line. The first driving circuit is configured to provide a first driving signal to the display panel through the first operational amplifier and the first driving line during a driving period. The first sensing circuit is configured to receive a first sensing signal from the display panel through the first operational amplifier and the first sensing line during a first sensing period.Type: GrantFiled: March 24, 2020Date of Patent: April 5, 2022Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Po-Hsiang Fang, Chieh-An Lin, Keko-Chun Liang, Ju-Lin Huang
-
Patent number: 11288989Abstract: A source driver and a calibration method thereof are provided. The source driver for driving and sensing a display panel of the disclosure includes a sensing circuit, an analog-to-digital converter circuit and a digital arithmetic circuit. The sensing circuit is configured to receive a reference signal through a sensing channel when the source driver is operated in a calibration mode. The analog-to-digital converter circuit is coupled to the sensing circuit, and configured to convert the reference signal to a digital reference signal. The digital arithmetic circuit is coupled to the analog-to-digital converter circuit, and configured to obtain a calibration parameter according to the digital reference signal. The source driver calibrates a sensing path for sensing a display panel according to the calibration parameter when the source driver is operated in a sensing mode.Type: GrantFiled: May 5, 2020Date of Patent: March 29, 2022Assignee: Novatek Microelectronics Corp.Inventors: Yi-Yang Tsai, Po-Hsiang Fang, Jhih-Siou Cheng, Ju-Lin Huang
-
Publication number: 20220093037Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.Type: ApplicationFiled: July 30, 2021Publication date: March 24, 2022Inventors: Jhih-Siou Cheng, Chun-Fu Lin, Po-Hsiang Fang, Ju-Lin Huang
-
Patent number: 11282438Abstract: A driver circuit configured to receive a display data and drive a display panel is provided. The display panel includes a plurality of light-emitting diode devices according to the display data. The driver circuit includes a data driver. The data driver is configured to output driving signals to drive the light-emitting diode devices according to the display data and operate in different operation modes according to a control signal. The data driver includes a plurality of output channels. The output channels output the driving signals to drive the light-emitting diode devices via respective output terminals of the driver circuit. An assignment relationship of the display data and the output channels is different in the different operation modes. A display apparatus including the driver circuit is also provided.Type: GrantFiled: July 1, 2020Date of Patent: March 22, 2022Assignee: Novatek Microelectronics Corp.Inventors: Chun-Wei Kang, Jhih-Siou Cheng, Chun-Fu Lin, Po-Hsiang Fang, Ju-Lin Huang