Patents by Inventor Ju-Lin Huang
Ju-Lin Huang 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: 10771016Abstract: An amplifier circuit including an input amplifier, an output amplifier and a diode device is provided. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.Type: GrantFiled: January 17, 2019Date of Patent: September 8, 2020Assignee: Novatek Microelectronics Corp.Inventors: Chia-Wei Su, Ju-Lin Huang, Keko-Chun Liang
-
Patent number: 10762846Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels and a signal convertor. The plurality of sensing channels are configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals. The signal convertor is coupled to the sensing channels and configured to receive the sensing signals from the sensing channels. The signal convertor receives the sensing signals from the sensing channels in different sequences during different sensing periods.Type: GrantFiled: September 4, 2018Date of Patent: September 1, 2020Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Chieh-An Lin, Ju-Lin Huang
-
Patent number: 10725486Abstract: A reference voltage generator includes a detecting voltage provider, a comparator, and a core circuit. The detecting voltage provider provides a detecting voltage with a first voltage level corresponding to a voltage coefficient. The comparator compares the first voltage level of the detecting voltage with a plurality of sampled amplitudes of an input signal to respectively generate a plurality of comparison results. The core circuit is used to: collect a plurality of first comparison results associated with a current received bit of a preset value from the comparison results; take the voltage coefficient as a first boundary voltage coefficient in response to the first comparison results satisfying a first condition; take the voltage coefficient as a second boundary voltage coefficient in response to the first comparison results satisfying a second condition. The reference circuit generates a reference voltage according to the first and second boundary voltage coefficients.Type: GrantFiled: August 2, 2018Date of Patent: July 28, 2020Assignee: Novatek Microelectronics Corp.Inventors: Yong-Ren Fang, Shen-Iuan Liu, Ju-Lin Huang, Tzu-Chien Tzeng, Keko-Chun Liang, Yu-Hsiang Wang, Che-Wei Yeh
-
Publication number: 20200234636Abstract: A sensing circuit for an organic light-emitting diode driver includes a sample and hold circuit and a gain amplifier. The sample and hold circuit is configured to sample a sensing signal received via an input terminal. The gain amplifier is coupled to the sample and hold circuit. The sample and hold circuit includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a fourth switch. The first capacitor is coupled between the input terminal and the gain amplifier. The second capacitor is coupled between a reference terminal and the gain amplifier. The first switch is connected between the first capacitor and the input terminal. The second switch is connected between the second capacitor and the reference terminal. The third switch is connected between the first capacitor and the gain amplifier. The fourth switch is connected between the second capacitor and the gain amplifier.Type: ApplicationFiled: January 21, 2019Publication date: July 23, 2020Inventors: Jin-Yi Lin, Chieh-An Lin, Jhih-Siou Cheng, Ju-Lin Huang
-
Publication number: 20200226981Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.Type: ApplicationFiled: March 26, 2020Publication date: July 16, 2020Applicant: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Ju-Lin Huang
-
Publication number: 20200220350Abstract: The present invention provides an output circuit with electrostatic discharge (ESD) protection in a semiconductor chip of a source driver. The source driver is configured to drive a display panel. The output circuit includes an output buffer, an output pad, a switch and a first resistor. The switch is coupled between the output buffer and the output pad, wherein data voltages for driving the display panel are transmitted from the output buffer to the output pad via the switch. The switch includes a first metal oxide semiconductor (MOS) transistor, which includes a first terminal coupled to the output pad, a bulk terminal and a gate terminal. The first resistor is coupled between the bulk terminal of the first MOS transistor and a first power supply terminal.Type: ApplicationFiled: March 17, 2020Publication date: July 9, 2020Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Chia-En Wu
-
Publication number: 20200202776Abstract: A display apparatus and a method for noise reduction are introduced. The method comprises steps of sensing a first pixel signal being superimposed by noises from a first pixel through a first sensing line in a first phase of a sensing operation and sensing a first noise signal from the first sensing line in a second phase of the sensing operation. The method further comprises steps of sensing a second noise signal from a second sensing line in the first phase of the sensing operation, and sensing a third noise signal from the second sensing line in the second phase of the sensing operation. The method further removes the noises that are superimposed to the first pixel signal according to a difference between the first pixel signal and the first noise signal and a difference between the second noise signal and the third noise signal to generate a denoised sensing value of the first pixel.Type: ApplicationFiled: June 2, 2019Publication date: June 25, 2020Applicant: Novatek Microelectronics Corp.Inventors: Keko-Chun Liang, Yu-Hsiang Wang, Jhih-Siou Cheng, Yi-Chuan Liu, Ju-Lin Huang
-
Publication number: 20200184869Abstract: A source driver and an operating method thereof are provided. The source driver includes a high voltage circuit, a low voltage circuit and a sensing circuit. The low voltage circuit is coupled to the high voltage circuit. The high voltage circuit and low voltage circuit drive a display panel. The sensing circuit is coupled to the low voltage circuit. The sensing circuit senses the display panel during an analog-to-digital operating period. At least one of the high voltage circuit and the low voltage circuit is disabled during at least part of the analog-to-digital operating period.Type: ApplicationFiled: June 2, 2019Publication date: June 11, 2020Applicant: Novatek Microelectronics Corp.Inventors: Po-Hsiang Fang, Jhih-Siou Cheng, Ju-Lin Huang
-
Publication number: 20200168154Abstract: A sensing circuit for an organic light-emitting diode (OLED) driver includes a sample and hold circuit and a clamping circuit. The sample and hold circuit includes a capacitor. The clamping circuit, coupled to the sample and hold circuit, is configured to clamp a sensing voltage received by the sample and hold circuit to conform to a withstand voltage of the capacitor.Type: ApplicationFiled: November 22, 2018Publication date: May 28, 2020Inventors: Jhih-Siou Cheng, Po-Yu Tseng, Keko-Chun Liang, Ju-Lin Huang, Chih-Hsien Chou
-
Patent number: 10643543Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.Type: GrantFiled: September 3, 2018Date of Patent: May 5, 2020Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Ju-Lin Huang
-
Patent number: 10637235Abstract: An output circuit with electrostatic discharge (ESD) protection in a semiconductor chip includes a first metal oxide semiconductor (MOS) transistor and a first resistor. The first MOS transistor includes a first terminal coupled to an output pad of the semiconductor chip, a bulk terminal and a gate terminal. The first resistor is coupled between the bulk terminal of the first MOS transistor and a first power supply terminal.Type: GrantFiled: December 14, 2016Date of Patent: April 28, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Jhih-Siou Cheng, Ju-Lin Huang, Chia-En Wu
-
Patent number: 10594264Abstract: A dynamic amplifier includes a first output capacitor, a first switch, a current source, a second switch, a voltage detector, a third switch and a level shifter. The first switch is coupled between a first terminal of the first output capacitor and a voltage detection node. The second switch is coupled to the current source and the voltage detection node. The voltage detector is coupled to the voltage detection node and the first switch. The third switch is coupled between the voltage detection node and a power source. The level shifter is coupled to a second terminal of the first output capacitor.Type: GrantFiled: June 28, 2018Date of Patent: March 17, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Cheng-En Hsieh, Shen-Iuan Liu, Tzu-Chien Tzeng, Jin-Yi Lin, Kuo-Sheng Huang, Ju-Lin Huang
-
Publication number: 20200007085Abstract: A dynamic amplifier includes a first output capacitor, a first switch, a current source, a second switch, a voltage detector, a third switch and a level shifter. The first switch is coupled between a first terminal of the first output capacitor and a voltage detection node. The second switch is coupled to the current source and the voltage detection node. The voltage detector is coupled to the voltage detection node and the first switch. The third switch is coupled between the voltage detection node and a power source. The level shifter is coupled to a second terminal of the first output capacitor.Type: ApplicationFiled: June 28, 2018Publication date: January 2, 2020Inventors: Cheng-En Hsieh, Shen-Iuan Liu, Tzu-Chien Tzeng, Jin-Yi Lin, Kuo-Sheng Huang, Ju-Lin Huang
-
Patent number: 10417972Abstract: A gamma correction digital-to-analog converter (DAC) includes a first DAC circuit, a second DAC circuit and a voltage generator. The first DAC circuit includes a plurality of first transistors and is configured to receive a plurality of first reference gamma voltages and 1 upper bits of k-bit digital data and generate a first gamma voltage based on the 1 upper bits of the k-bit digital data and the first reference gamma voltages. The second DAC circuit includes a plurality of second transistors and is configured to receive a plurality of second reference gamma voltages and m lower bits of the k-bit digital data and generate a second gamma voltage based on the m lower bits of the k-bit digital data and the second reference gamma voltages.Type: GrantFiled: December 13, 2018Date of Patent: September 17, 2019Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Ju-Lin Huang
-
Publication number: 20190156754Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels and a signal convertor. The plurality of sensing channels are configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals. The signal convertor are coupled to the sensing channels and configured to receive the sensing signals from the sensing channels. The signal convertor receives the sensing signals from the sensing channels in different sequences during different sensing periods.Type: ApplicationFiled: September 4, 2018Publication date: May 23, 2019Applicant: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Chieh-An Lin, Ju-Lin Huang
-
Publication number: 20190156736Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals, the sensing channels are coupled to the sensing lines in an arrangement selected from one of a random arrangement and a normal arrangement. The driver further includes a signal convertor coupled to the sensing channels and configured to receive the sensing signals from the sensing channels in a sequence selected from one of a random sequence and a normal sequence.Type: ApplicationFiled: September 3, 2018Publication date: May 23, 2019Applicant: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Tzong-Honge Shieh, Ju-Lin Huang
-
Publication number: 20190149100Abstract: An amplifier circuit including an input amplifier, an output amplifier and a diode device is provided. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.Type: ApplicationFiled: January 17, 2019Publication date: May 16, 2019Applicant: Novatek Microelectronics Corp.Inventors: Chia-Wei Su, Ju-Lin Huang, Keko-Chun Liang
-
Patent number: 10283069Abstract: A display panel including a plurality of pixel units, a plurality of source lines, a plurality of gate lines and a plurality of common electrode lines is provided. The pixels units are arranged in array. The array includes a plurality of columns and a plurality of rows. The source lines are respectively coupled with the pixel units disposed in a same column of the columns. The gate lines are respectively coupled with the pixel units disposed in a same row of the rows. The common electrode lines and gate lines extend parallelly with each other. At least one of the source date lines, the gate lines and the common electrode lines has the line widths varied along the extension direction thereof.Type: GrantFiled: April 17, 2018Date of Patent: May 7, 2019Assignee: Novatek Microelectronics Corp.Inventors: Ju-Lin Huang, Jhih-Siou Cheng
-
Publication number: 20190113939Abstract: A reference voltage generator includes a detecting voltage provider, a comparator, and a core circuit. The detecting voltage provider provides a detecting voltage with a first voltage level corresponding to a voltage coefficient. The comparator compares the first voltage level of the detecting voltage with a plurality of sampled amplitudes of an input signal to respectively generate a plurality of comparison results. The core circuit is used to: collect a plurality of first comparison results associated with a current received bit of a preset value from the comparison results; take the voltage coefficient as a first boundary voltage coefficient in response to the first comparison results satisfying a first condition; take the voltage coefficient as a second boundary voltage coefficient in response to the first comparison results satisfying a second condition. The reference circuit generates a reference voltage according to the first and second boundary voltage coefficients.Type: ApplicationFiled: August 2, 2018Publication date: April 18, 2019Applicant: Novatek Microelectronics Corp.Inventors: Yong-Ren Fang, Shen-Iuan Liu, Ju-Lin Huang, Tzu-Chien Tzeng, Keko-Chun Liang, Yu-Hsiang Wang, Che-Wei Yeh
-
Patent number: RE47432Abstract: An output stage circuit includes: a first transistor, including a first terminal coupled to a first node, a second terminal coupled to an output terminal, a third terminal coupled to an input terminal for receiving an input voltage, and a fourth terminal coupled to a first power terminal for receiving a first voltage; a second transistor, including a first terminal coupled to a second node, a second terminal coupled to the output terminal, a third terminal coupled to the input terminal for receiving the input voltage, and a fourth terminal coupled to ground; and a current source, coupled to the output terminal for providing a constant current.Type: GrantFiled: June 20, 2016Date of Patent: June 11, 2019Assignee: NOVATEK Microelectronics Corp.Inventors: Ju-Lin Huang, Keko-Chun Liang, Chun-Yung Cho, Cheng-Hung Chen