Patents by Inventor Chun-Kuei Wen
Chun-Kuei Wen 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).
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Patent number: 11081079Abstract: A display device includes an output circuit, a multiplexer, and a controller. The output circuit is configured to output a data voltage to an output pin. The multiplexer is configured to sequentially output the data voltage to different data lines according to a first multiplexing signal and a second multiplexing signal. The controller is configured to generate a control signal according to a variation of the data voltage to make the output pin output a default voltage level different from the data voltage corresponding to the data voltage.Type: GrantFiled: April 26, 2019Date of Patent: August 3, 2021Assignee: AU OPTRONICS CORPORATIONInventors: Chun-Kuei Wen, Chun-Yu Chen, Hung-Min Shih, Jie-Chuan Huang
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Patent number: 10984693Abstract: A display device and a shutdown control method thereof are provided. In the display device, a display panel has multiple pixels. A power supply circuit generates a power supply voltage, a gate high voltage and a common voltage according to an input power. A gate driver generates gate scan signals, and a source driver provides source driving signals to drive the display panel. A shutdown detection circuit detects a variation state of voltages values of the power supply voltage, the input voltage and the gate high voltage, and starts a shutdown process when the variation state is a decreasing state. In the shutdown process, the source driver makes the source driving signals to be equal to a reference ground voltage, the gate driver generates the gate scan signals with a high voltage pulse, and the power supply circuit makes the common voltage to be equal to the reference ground voltage.Type: GrantFiled: March 19, 2019Date of Patent: April 20, 2021Assignee: Au Optronics CorporationInventors: Chun-Kuei Wen, Hung-Min Shih
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Patent number: 10477645Abstract: A display apparatus and an operating method of the display apparatus are provided. The display apparatus includes a display panel, a light luminance sensing circuit, a controller, and a driving circuit. The light luminance sensing circuit senses luminance intensity to generate an output sensing signal. The controller receives the output sensing signal and converts the output sensing signal to generate selecting numeric information according to look-up information. The controller generates a control driving signal according to the selecting numeric information. The look-up information records a corresponding relation between a plurality of electric characteristic values and a plurality of pieces of numeric information. The driving circuit adjusts the luminance intensity of a lighting element according to the control driving signal.Type: GrantFiled: November 7, 2018Date of Patent: November 12, 2019Assignee: Au Optronics CorporationInventors: Chun-Yu Chen, Chun-Kuei Wen
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Publication number: 20190333467Abstract: A display device includes an output circuit, a multiplexer, and a controller. The output circuit is configured to output a data voltage to an output pin. The multiplexer is configured to sequentially output the data voltage to different data lines according to a first multiplexing signal and a second multiplexing signal. The controller is configured to generate a control signal according to a variation of the data voltage to make the output pin output a default voltage level different from the data voltage corresponding to the data voltage.Type: ApplicationFiled: April 26, 2019Publication date: October 31, 2019Inventors: CHUN-KUEI WEN, CHUN-YU CHEN, HUNG-MIN SHIH, JIE-CHUAN HUANG
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Patent number: 10446073Abstract: A driving method for a display panel is provided, including the following steps: providing a first control signal, and providing a second control signal, where a voltage change of the second control signal compensates for a voltage change of the first control signal.Type: GrantFiled: October 19, 2017Date of Patent: October 15, 2019Assignee: AU OPTRONICS CORPORATIONInventors: Chun-Kuei Wen, Chun-Yu Chen, Yi-Hao Wang, Jie-Chuan Huang, Hung-Min Shih
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Publication number: 20190295451Abstract: A display device and a shutdown control method thereof are provided. In the display device, a display panel has multiple pixels. A power supply circuit generates a power supply voltage, a gate high voltage and a common voltage according to an input power. A gate driver generates gate scan signals, and a source driver provides source driving signals to drive the display panel. A shutdown detection circuit detects a variation state of voltages values of the power supply voltage, the input voltage and the gate high voltage, and starts a shutdown process when the variation state is a decreasing state. In the shutdown process, the source driver makes the source driving signals to be equal to a reference ground voltage, the gate driver generates the gate scan signals with a high voltage pulse, and the power supply circuit makes the common voltage to be equal to the reference ground voltage.Type: ApplicationFiled: March 19, 2019Publication date: September 26, 2019Applicant: Au Optronics CorporationInventors: Chun-Kuei Wen, Hung-Min Shih
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Patent number: 10403223Abstract: A display apparatus and a driving method thereof are provided. A data driving chip provides a plurality of data voltages to a plurality of multiplexers through a plurality of output lines. When the display apparatus displays a pure gray pattern, the data voltages are alternately provided to a first data line group and a second data line group during a scan line driving period of each of the scan lines to make two adjacent pixels have different polarities. During a blank period, a plurality of data lines corresponding to a plurality of pixels having the same color and the same polarity on two adjacent scan lines are electrically coupled to each other through the data driving chip to share charges.Type: GrantFiled: April 17, 2018Date of Patent: September 3, 2019Assignee: Au Optronics CorporationInventors: Chun-Kuei Wen, Hung-Min Shih
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Patent number: 10192515Abstract: A data driver for a display device comprises a first boost circuit, a first gate clock generation circuit, a first level shift circuit, and a data drive circuit. The first boost circuit is used to receive a supply voltage value and generate at least one preset voltage value. The first gate clock generation circuit is electrically coupled to the first boost circuit, and is used to receive a plurality of timing signals and at least one preset voltage value, and generate at least one first timing signal. The first level shift circuit is used to receive the at least one first timing signal and generate at least one gate timing signal. The data drive circuit is used to receive the timing signals, and generate a plurality of display data signals.Type: GrantFiled: December 20, 2016Date of Patent: January 29, 2019Assignee: AU OPTRONICS CORPORATIONInventors: Shih-Yuan Su, Kai-Yuan Siao, Jian-Feng Li, Chun-Kuei Wen
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Publication number: 20190012978Abstract: A display apparatus and a driving method thereof are provided. A data driving chip provides a plurality of data voltages to a plurality of multiplexers through a plurality of output lines. When the display apparatus displays a pure gray pattern, the data voltages are alternately provided to a first data line group and a second data line group during a scan line driving period of each of the scan lines to make two adjacent pixels have different polarities. During a blank period, a plurality of data lines corresponding to a plurality of pixels having the same color and the same polarity on two adjacent scan lines are electrically coupled to each other through the data driving chip to share charges.Type: ApplicationFiled: April 17, 2018Publication date: January 10, 2019Applicant: Au Optronics CorporationInventors: Chun-Kuei Wen, Hung-Min Shih
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Patent number: 10152911Abstract: A power supply circuit includes a comparison circuit, a preset value setting circuit, a reset detecting circuit and a reset signal generating circuit. The comparison circuit compares a first and second voltage to output a comparing result. The first and second voltages correspond to a first and second preset value, respectively. When the comparison result shows that the second voltage is greater than the first voltage, the preset value setting circuit outputs the second preset value; otherwise it outputs a third preset value, which is greater than the first preset value. The reset detecting circuit determines whether the operation voltage of the power supply circuit drops to the preset value outputted by the preset value setting circuit, and outputs a control signal accordingly. The reset signal generating circuit determines whether to output a reset signal for resetting gate lines in a display panel based on the control signal.Type: GrantFiled: November 15, 2016Date of Patent: December 11, 2018Assignee: AU OPTRONICS CORPORATIONInventors: Wei-Chin Tsai, Chun-Kuei Wen
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Publication number: 20180315368Abstract: A driving method for a display panel is provided, including the following steps: providing a first control signal, and providing a second control signal, where a voltage change of the second control signal compensates for a voltage change of the first control signal.Type: ApplicationFiled: October 19, 2017Publication date: November 1, 2018Inventors: Chun-Kuei WEN, Chun-Yu CHEN, Yi-Hao WANG, Jie-Chuan HUANG, Hung-Min SHIH
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Publication number: 20180025696Abstract: A data driver for a display device comprises a first boost circuit, a first gate clock generation circuit, a first level shift circuit, and a data drive circuit. The first boost circuit is used to receive a supply voltage value and generate at least one preset voltage value. The first gate clock generation circuit is electrically coupled to the first boost circuit, and is used to receive a plurality of timing signals and at least one preset voltage value, and generate at least one first timing signal. The first level shift circuit is used to receive the at least one first timing signal and generate at least one gate timing signal. The data drive circuit is used to receive the timing signals, and generate a plurality of display data signals.Type: ApplicationFiled: December 20, 2016Publication date: January 25, 2018Inventors: Shih-Yuan SU, Kai-Yuan Siao, Jian-Feng Li, Chun-Kuei Wen
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Patent number: 9857420Abstract: An integrated circuit includes a sensing output terminal, a driver, a first sensing input terminal, a second sensing input terminal and a sensor. The driver is used to transmit a sensing test signal through the sensing output terminal. The first sensing input terminal is coupled to the sensing output terminal through a first external circuit for receiving the sensing test signal. The second sensing input terminal is coupled to the sensing output terminal through a second external circuit for receiving the sensing test signal. The sensor is used to compare the sensing test signals received by the first sensing input terminal and the second sensing input terminal with a clock signal respectively to generate a first comparison result and a second comparison result.Type: GrantFiled: June 10, 2015Date of Patent: January 2, 2018Assignee: AU OPTRONICS CORP.Inventors: Chun-Kuei Wen, Hung-Min Shih, Che-Yu Kuo
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Publication number: 20170162106Abstract: A power supply circuit includes a comparison circuit, a preset value setting circuit, a reset detecting circuit and a reset signal generating circuit. The comparison circuit compares a first and second voltage to output a comparing result. The first and second voltages correspond to a first and second preset value, respectively. When the comparison result shows that the second voltage is greater than the first voltage, the preset value setting circuit outputs the second preset value; otherwise it outputs a third preset value, which is greater than the first preset value. The reset detecting circuit determines whether the operation voltage of the power supply circuit drops to the preset value outputted by the preset value setting circuit, and outputs a control signal accordingly. The reset signal generating circuit determines whether to output a reset signal for resetting gate lines in a display panel based on the control signal.Type: ApplicationFiled: November 15, 2016Publication date: June 8, 2017Inventors: Wei-Chin TSAI, Chun-Kuei WEN
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Publication number: 20170116948Abstract: A display apparatus and a method for driving pixel thereof are provided. The display apparatus includes a source driver, a plurality of data lines and a plurality of pixels. The source driver receives a polarity signal and a frame switching signal and has a plurality of data channels. The data channels alternately provide a plurality of first pixel voltages with a first drive capability and a plurality of second pixel voltages with a second drive capability according to the polarity signal. Each of the data channels alternatively outputs the corresponding first pixel voltage and the corresponding second pixel voltage. The data lines are coupled to the source driver to receive the first pixel voltages and the second pixel voltages. The pixels are coupled to the data lines to receive the corresponding first pixel voltage or the corresponding second pixel voltage.Type: ApplicationFiled: March 3, 2016Publication date: April 27, 2017Inventors: Chun-Kuei WEN, Chun-Yu CHEN, Yu-Ting HUANG, Hung-Min SHIH
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Patent number: 9607564Abstract: A clock generator circuit of a liquid display panel includes a charge sharing switch unit, a first capacitor, a first switch, a second switch, a third switch and a fourth switch. The charge sharing switch unit is configured to receive control signals and accordingly output a first-polarity voltage to the first capacitor. The clock generator circuit is configured to turn on the first switch, the second switch, the third switch and the fourth switch according to a specific sequence thereby outputting a clock signal. An operation method for the aforementioned clock generator circuit is also provided.Type: GrantFiled: January 8, 2015Date of Patent: March 28, 2017Assignee: AU OPTRONICS CORP.Inventors: Chun-Kuei Wen, Yu-Ting Huang, Hung-Min Shih, Kuan-Yu Chen
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Patent number: 9607559Abstract: A charge-sharing controlling method and a display panel are disclosed. The charge-sharing controlling method is suitable for the display panel including plural sub-pixels. The charge-sharing controlling method includes following steps: determining whether the display panel is displaying a primary color screen; if the display panel is displaying a primary color screen, prolonging an activated time of a charge-sharing circuit, which is coupled between any two of the sub-pixels displaying the same color, adjacent to each other and having opposite polarities.Type: GrantFiled: September 25, 2014Date of Patent: March 28, 2017Assignee: AU OPTRONICS CORPORATIONInventors: Chun-Kuei Wen, Yu-Ting Huang, Hung-Min Shih, Tian-Hua Su
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Publication number: 20160231377Abstract: An integrated circuit includes a sensing output terminal, a driver, a first sensing input terminal, a second sensing input terminal and a sensor. The driver is used to transmit a sensing test signal through the sensing output terminal. The first sensing input terminal is coupled to the sensing output terminal through a first external circuit for receiving the sensing test signal. The second sensing input terminal is coupled to the sensing output terminal through a second external circuit for receiving the sensing test signal. The sensor is used to compare the sensing test signals received by the first sensing input terminal and the second sensing input terminal with a clock signal respectively to generate a first comparison result and a second comparison result.Type: ApplicationFiled: June 10, 2015Publication date: August 11, 2016Inventors: Chun-Kuei Wen, Hung-Min Shih, Che-Yu Kuo
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Publication number: 20160125827Abstract: A clock generator circuit of a liquid display panel includes a charge sharing switch unit, a first capacitor, a first switch, a second switch, a third switch and a fourth switch. The charge sharing switch unit is configured to receive control signals and accordingly output a first-polarity voltage to the first capacitor. The clock generator circuit is configured to turn on the first switch, the second switch, the third switch and the fourth switch according to a specific sequence thereby outputting a clock signal. An operation method for the aforementioned clock generator circuit is also provided.Type: ApplicationFiled: January 8, 2015Publication date: May 5, 2016Inventors: CHUN-KUEI WEN, YU-TING HUANG, HUNG-MIN SHIH, KUAN-YU CHEN
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Publication number: 20150109347Abstract: A charge-sharing controlling method and a display panel are disclosed. The charge-sharing controlling method is suitable for the display panel including plural sub-pixels. The charge-sharing controlling method includes following steps: determining whether the display panel is displaying a primary color screen; if the display panel is displaying a primary color screen, prolonging an activated time of a charge-sharing circuit, which is coupled between any two of the sub-pixels displaying the same color, adjacent to each other and having opposite polarities.Type: ApplicationFiled: September 25, 2014Publication date: April 23, 2015Inventors: Chun-Kuei WEN, Yu-Ting HUANG, Hung-Min SHIH, Tian-Hua SU