Patents by Inventor Yueh-Hsiu Liu
Yueh-Hsiu Liu 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: 9875700Abstract: A source driver utilized for a display device and switching between two operational modes includes a reception module for receiving a plurality of display information and a plurality of transmission channels. Each transmission channel includes a register module for receiving one of the plurality of display information; a voltage level transformer for determining a voltage level of the one of display information; a polarization digital-to-analog converter for processing a digital-to-analog operation for the voltage level of the one display information; and an output module for outputting a plurality of voltage levels of the display information. The voltage levels of every two adjacent transmission channels include different polarization of voltage levels, and the output module processes an odd-number switching operation before outputting the plurality of voltage levels.Type: GrantFiled: April 1, 2014Date of Patent: January 23, 2018Assignee: NOVATEK Microelectronics Corp.Inventors: Yueh-Hsun Tsai, Yi-Chuan Liu, Yueh-Hsiu Liu
-
Publication number: 20150116193Abstract: A source driver utilized for a display device and switching between two operational modes includes a reception module for receiving a plurality of display information and a plurality of transmission channels. Each transmission channel includes a register module for receiving one of the plurality of display information; a voltage level transformer for determining a voltage level of the one of display information; a polarization digital-to-analog converter for processing a digital-to-analog operation for the voltage level of the one display information; and an output module for outputting a plurality of voltage levels of the display information. The voltage levels of every two adjacent transmission channels include different polarization of voltage levels, and the output module processes an odd-number switching operation before outputting the plurality of voltage levels.Type: ApplicationFiled: April 1, 2014Publication date: April 30, 2015Applicant: NOVATEK Microelectronics Corp.Inventors: Yueh-Hsun Tsai, Yi-Chuan Liu, Yueh-Hsiu Liu
-
Patent number: 9013392Abstract: A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.Type: GrantFiled: October 21, 2013Date of Patent: April 21, 2015Assignee: Novatek Microelectronics Corp.Inventors: Chih-Jen Yen, Yueh-Hsiu Liu, Ju-Lin Huang, Peng-Yu Chen, Yu-Shao Liu
-
Patent number: 8912828Abstract: A driving circuit of flat display including a charging circuit path, a discharging circuit path, and a detecting circuit is provided. The charging circuit path has first and second impedance states, wherein an impedance value of the first impedance state is smaller than that of the second impedance state. The discharging circuit path has third and fourth impedance states, wherein an impedance value of the third impedance state is smaller than that of the fourth impedance state. The detecting circuit detects whether the charging circuit path or the discharging circuit path is in an unstable first state or stable second state, controls the charging circuit path to the first impedance state or the discharging circuit path to the third impedance state in the first state, and controls the charging circuit path to the second impedance state or the discharging circuit path to the fourth impedance state in the second state.Type: GrantFiled: March 12, 2013Date of Patent: December 16, 2014Assignee: Novatek Microelectronics Corp.Inventors: Ju-Lin Huang, Yueh-Hsiu Liu
-
Patent number: 8907939Abstract: A frame maintaining circuit including a detection circuit and a display control circuit is provided. The detection circuit detects an unusual status to output a status feedback signal. The display control circuit maintains a frame displayed by a display apparatus according to the status feedback signal until the unusual status ceases.Type: GrantFiled: June 8, 2012Date of Patent: December 9, 2014Assignee: Novatek Microelectronics Corp.Inventors: Yueh-Hsiu Liu, Hsin-Yih Li, Chih-Yung Hsu, Yu-Shao Liu, Chih-Jen Yen
-
Patent number: 8878764Abstract: A driving method is provided for reducing power consumption of a liquid crystal display. The driving method includes steps of sequentially receiving first data and second data, determining whether the second data is the same as the first data, and controlling a data-line driving circuit not to read in driving data corresponding to the second data when the second data is the same as the first data.Type: GrantFiled: September 15, 2008Date of Patent: November 4, 2014Assignee: NOVATEK Microelectronics Corp.Inventors: Chin-Hung Hsu, Yueh-Hsiu Liu, Chih-Chiang Chuang, Li-Jun Chen
-
Patent number: 8773346Abstract: A driving device of a liquid crystal display (LCD) utilized for preventing noises of a clock signal from causing error operation of a shift register is disclosed. The driving device includes a shift register, a reception terminal, a noise elimination circuit and a control signal generation circuit. The reception terminal is utilized for receiving a first clock signal. The noise elimination circuit is coupled to the reception terminal, and is utilized for eliminating noises of the first clock signal and delaying the first clock signal for a preset time to generate a second clock signal. The control signal generation circuit is coupled to the reception terminal, the noise elimination circuit and the shift register, and is utilized for generating a first control signal and a second control signal to control the shift register.Type: GrantFiled: October 1, 2013Date of Patent: July 8, 2014Assignee: NOVATEK Microelectronics Corp.Inventors: Tung-Shuan Cheng, Yueh-Hsiu Liu, Kai-Shu Han
-
Publication number: 20140043313Abstract: A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.Type: ApplicationFiled: October 21, 2013Publication date: February 13, 2014Applicant: Novatek Microelectronics Corp.Inventors: Chih-Jen Yen, Yueh-Hsiu Liu, Ju-Lin Huang, Peng-Yu Chen, Yu-Shao Liu
-
Publication number: 20140022233Abstract: A driving device of a liquid crystal display (LCD) utilized for preventing noises of a clock signal from causing error operation of a shift register is disclosed. The driving device includes a shift register, a reception terminal, a noise elimination circuit and a control signal generation circuit. The reception terminal is utilized for receiving a first clock signal. The noise elimination circuit is coupled to the reception terminal, and is utilized for eliminating noises of the first clock signal and delaying the first clock signal for a preset time to generate a second clock signal. The control signal generation circuit is coupled to the reception terminal, the noise elimination circuit and the shift register, and is utilized for generating a first control signal and a second control signal to control the shift register.Type: ApplicationFiled: October 1, 2013Publication date: January 23, 2014Applicant: NOVATEK Microelectronics Corp.Inventors: Tung-Shuan Cheng, Yueh-Hsiu Liu, Kai-Shu Han
-
Publication number: 20140002437Abstract: A power-saving driving circuit for a flat panel display is provided. The power-saving driving circuit includes a pixel array and at least one source driver. The pixel array composes as a plurality of data lines. The data lines are grouped into a plurality of pixel regions according to a scan time. Each of the pixel regions has a plurality of pixels. The source driver sequentially supplies a driving voltage to the pixels on at least one of the data lines. The driving voltage supplied by the source driver to each of the pixel regions has a varying driving capability, and the driving capability gets stronger as it gets closer to an end of the data lines.Type: ApplicationFiled: January 28, 2013Publication date: January 2, 2014Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Keko-Chun Liang, Yueh-Hsiu Liu
-
Publication number: 20130342109Abstract: A driving circuit of flat display including a charging circuit path, a discharging circuit path, and a detecting circuit is provided. The charging circuit path has first and second impedance states, wherein an impedance value of the first impedance state is smaller than that of the second impedance state. The discharging circuit path has third and fourth impedance states, wherein an impedance value of the third impedance state is smaller than that of the fourth impedance state. The detecting circuit detects whether the charging circuit path or the discharging circuit path is in an unstable first state or stable second state, controls the charging circuit path to the first impedance state or the discharging circuit path to the third impedance state in the first state, and controls the charging circuit path to the second impedance state or the discharging circuit path to the fourth impedance state in the second state.Type: ApplicationFiled: March 12, 2013Publication date: December 26, 2013Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Ju-Lin Huang, Yueh-Hsiu Liu
-
Patent number: 8593389Abstract: A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.Type: GrantFiled: April 10, 2012Date of Patent: November 26, 2013Assignee: Novatek Microelectronics Corp.Inventors: Chih-Jen Yen, Yueh-Hsiu Liu, Ju-Lin Huang, Peng-Yu Chen, Yu-Shao Liu
-
Patent number: 8564525Abstract: A driving device of a liquid crystal display (LCD) utilized for preventing noises of a clock signal from causing error operation of a shift register is disclosed. The driving device includes a shift register, a reception terminal, a noise elimination circuit and a control signal generation circuit. The reception terminal is utilized for receiving a first clock signal. The noise elimination circuit is coupled to the reception terminal, and is utilized for eliminating noises of the first clock signal and delaying the first clock signal for a preset time to generate a second clock signal. The control signal generation circuit is coupled to the reception terminal, the noise elimination circuit and the shift register, and is utilized for generating a first control signal and a second control signal to control the shift register.Type: GrantFiled: April 27, 2009Date of Patent: October 22, 2013Assignee: NOVATEK Microelectronics Corp.Inventors: Tung-Shuan Cheng, Yueh-Hsiu Liu, Kai-Shu Han
-
Publication number: 20120242644Abstract: A frame maintaining circuit including a detection circuit and a display control circuit is provided. The detection circuit detects an unusual status to output a status feedback signal. The display control circuit maintains a frame displayed by a display apparatus according to the status feedback signal until the unusual status ceases.Type: ApplicationFiled: June 8, 2012Publication date: September 27, 2012Applicant: NOVATEK MICROELECTRONICS CORPInventors: Yueh-Hsiu LIU, Hsun-Yih Li, Chih-Yung Hsu, Yu -Shau Liu, Chih-Jen Yen
-
Publication number: 20120194575Abstract: A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.Type: ApplicationFiled: April 10, 2012Publication date: August 2, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Jen Yen, Yueh-Hsiu Liu, Ju-Lin Huang, Peng-Yu Chen, Yu-Shao Liu
-
Publication number: 20120056857Abstract: A display apparatus and a display method thereof are provided. The display apparatus comprises a panel, an unusual status detecting unit, a status recognizing unit, a scan driver and a data driver. The unusual status detecting unit detects an unusual status to output a status feedback signal. The status recognizing unit transforms a first output enabling signal into a second output enabling signal according to the status feedback signal. The scan driver outputs a plurality of scan signals to drive the panel according to the clock signal and the second output enabling signal. The second output enabling signal masks at least one of the scan signals. The data driver outputs the data signals to the panel.Type: ApplicationFiled: March 24, 2011Publication date: March 8, 2012Applicant: NOVATEK MICROELECTRONICS CORPInventors: Hsin-Yih Li, Yueh-Hsiu Liu
-
Patent number: 8009161Abstract: The present invention provides a differential signal interfacing device, including a reduced swing differential signaling (RSDS) transmitter and a plurality of RSDS receivers, in order to improve RSDS signal capacity. The RSDS transmitter is coupled to the plurality of RSDS receivers via a bus and transmits a RSDS signal in a discontinuous manner. The plurality of RSDS receivers receives the RSDS signal for signals of different types.Type: GrantFiled: January 25, 2008Date of Patent: August 30, 2011Assignee: NOVATEK Microelectronics Corp.Inventors: Jr-Ching Lin, Yueh-Hsiu Liu
-
Patent number: 7773718Abstract: A shift register circuit includes a plurality of bit register units, coupled in series, for transferring an input signal among the plurality of bit register units to sequentially output the input signal to a plurality of data output terminals according to a control signal and a clock signal, wherein the number of the plurality of data output terminals is greater than that of the plurality of bit register units, and a control unit for generating the control signal to control transference of the input signal.Type: GrantFiled: January 8, 2008Date of Patent: August 10, 2010Assignee: NOVATEK Microelectronics Corp.Inventors: Tung-Shuan Cheng, Yueh-Hsiu Liu
-
Publication number: 20100045657Abstract: A driving device of a liquid crystal display (LCD) utilized for preventing noises of a clock signal from causing error operation of a shift register is disclosed. The driving device includes a shift register, a reception terminal, a noise elimination circuit and a control signal generation circuit. The reception terminal is utilized for receiving a first clock signal. The noise elimination circuit is coupled to the reception terminal, and is utilized for eliminating noises of the first clock signal and delaying the first clock signal for a preset time to generate a second clock signal. The control signal generation circuit is coupled to the reception terminal, the noise elimination circuit and the shift register, and is utilized for generating a first control signal and a second control signal to control the shift register.Type: ApplicationFiled: April 27, 2009Publication date: February 25, 2010Inventors: Tung-Shuan Cheng, Yueh-Hsiu Liu, Kai-Shu Han
-
Publication number: 20090309860Abstract: A driving method is provided for reducing power consumption of a liquid crystal display. The driving method includes steps of sequentially receiving first data and second data, determining whether the second data is the same as the first data, and controlling a data-line driving circuit not to read in driving data corresponding to the second data when the second data is the same as the first data.Type: ApplicationFiled: September 15, 2008Publication date: December 17, 2009Inventors: Chin-Hung Hsu, Yueh-Hsiu Liu, Chih-Chiang Chuang, Li-Jun Chen