Patents by Inventor CHIEN-CHUAN KO
CHIEN-CHUAN KO 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: 10847072Abstract: A scan driver that includes a plurality of stages of scan driving circuits is provided.Type: GrantFiled: October 24, 2018Date of Patent: November 24, 2020Assignee: AU OPTRONICS CORPORATIONInventors: Chien-Chuan Ko, Meng-Chieh Tsai
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Publication number: 20190130808Abstract: A scan driver that includes a plurality of stages of scan driving circuits is provided.Type: ApplicationFiled: October 24, 2018Publication date: May 2, 2019Inventors: Chien-Chuan KO, Meng-Chieh TSAI
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Patent number: 9958985Abstract: A shift register circuit includes a driving unit outputting a first scan signal according to a first clock signal; a pull up unit outputting a driving voltage according to one of a second scan signal and a third scan signal; a pull down unit pulling down voltage of an output end according to a second clock signal; a pull down control unit controlling the voltage of the output end and a driving node according to the first clock signal; a reset unit pulling down the voltage level of the driving node according to a touch-enable signal; and an electric storage unit adjusting the voltage of the driving node according to a touch-stop signal. When the touch-enable signal is enabled, the clock signals and the touch-stop signal are disabled, and when the touch-stop signal is enabled, the clock signals and the touch-enable signal are disabled.Type: GrantFiled: June 22, 2016Date of Patent: May 1, 2018Assignee: AU OPTRONICS CORPORATIONInventors: Chih-Lung Lin, Po-Chun Lai, Chia-En Wu, Chien-Chuan Ko, Meng-Chieh Tsai
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Patent number: 9921702Abstract: A touch display apparatus is disclosed herein.Type: GrantFiled: September 6, 2016Date of Patent: March 20, 2018Assignee: AU OPTRONICS CORPORATIONInventors: Chien-Chuan Ko, Meng-Chieh Tsai
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Patent number: 9922591Abstract: A display driving method includes: performing a display scan function and a display stop function during a plurality of frame periods; during one frame period, outputting, alternately and sequentially along a scan direction, N scan signals according to K clock signals when performing the display scan function, wherein each of the scan signals has an enable period of a scan line, the clock signals sequentially have a delay, and each of the clock signals is a periodic signal with K delays as one period; providing a driving control signal and disabling the clock signals when performing the display stop function during a display stop period, wherein an initiation time position of the display stop period is changed based on an offset between two neighboring frame periods, and the neighboring frame periods have no overlapping or interlacing interval.Type: GrantFiled: November 21, 2016Date of Patent: March 20, 2018Assignee: AU OPTRONICS CORPORATIONInventors: Chien-Chuan Ko, Chun-Hung Kuo, Meng-Chieh Tsai
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Patent number: 9747869Abstract: A driving method for a display panel is disclosed. The display panel includes a plurality of gate lines. The driving method includes: driving the plurality of gate lines in a first preset sequence and a second preset sequence by turns, wherein the first preset sequence is defined from the first of the plurality of gate lines to the last of the plurality of gate lines, the second preset sequence is defined from the last of the plurality of gate lines to the first of the plurality of gate lines, and driving periods of each two adjacent gate lines partially overlap; and adjusting a voltage difference, between a high-voltage level and a low-voltage level, of each gate pulse provided to the gate lines when the gate lines are driven either in the first sequence or in the second sequence.Type: GrantFiled: August 1, 2014Date of Patent: August 29, 2017Assignee: AU OPTRONICS CORP.Inventors: Chien-Chuan Ko, Meng-Chieh Tsai
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Patent number: 9733150Abstract: An inspection method for inspecting the water resistance of an electronic device is provided, including providing a vacuum generator, using the vacuum generator to pump air out of the electronic device, stopping the pumping of air out of the electronic device when the air pressure in the electronic device is less than a predetermined pressure value, measuring the air pressure in the electronic device as a first pressure value after the pumping of air out of the electronic device has been stopped for a predetermined time, calculating the pressure difference D by subtracting a second pressure value from the predetermined pressure value, calculating the pressure difference d by subtracting the second pressure value from the first pressure value, and determining whether the electronic device is waterproof or not according to the pressure differences D and d.Type: GrantFiled: January 7, 2015Date of Patent: August 15, 2017Assignee: HTC CORPORATIONInventors: Shen-Chun Fan, Chien-Chuan Ko
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Publication number: 20170154567Abstract: A display driving method includes: performing a display scan function and a display stop function during a plurality of frame periods; during one frame period, outputting, alternately and sequentially along a scan direction, N scan signals according to K clock signals when performing the display scan function, wherein each of the scan signals has an enable period of a scan line, the clock signals sequentially have a delay, and each of the clock signals is a periodic signal with K delays as one period; providing a driving control signal and disabling the clock signals when performing the display stop function during a display stop period, wherein an initiation time position of the display stop period is changed based on an offset between two neighboring frame periods, and the neighboring frame periods have no overlapping or interlacing interval.Type: ApplicationFiled: November 21, 2016Publication date: June 1, 2017Inventors: Chien-Chuan KO, Chun-Hung KUO, Meng-Chieh TSAI
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Publication number: 20170123556Abstract: A shift register circuit includes a driving unit outputting a first scan signal according to a first clock signal; a pull up unit outputting a driving voltage according to one of a second scan signal and a third scan signal; a pull down unit pulling down voltage of an output end according to a second clock signal; a pull down control unit controlling the voltage of the output end and a driving node according to the first clock signal; a reset unit pulling down the voltage level of the driving node according to a touch-enable signal; and an electric storage unit adjusting the voltage of the driving node according to a touch-stop signal. When the touch-enable signal is enabled, the clock signals and the touch-stop signal are disabled, and when the touch-stop signal is enabled, the clock signals and the touch-enable signal are disabled.Type: ApplicationFiled: June 22, 2016Publication date: May 4, 2017Inventors: Chih-Lung LIN, Po-Chun Lai, Chia-En Wu, Chien-Chuan Ko, Meng-Chieh Tsai
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Publication number: 20170102801Abstract: A touch display apparatus is disclosed herein.Type: ApplicationFiled: September 6, 2016Publication date: April 13, 2017Inventors: Chien-Chuan KO, Meng-Chieh TSAI
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Patent number: 9401220Abstract: A multi-phase gate driver includes a start/end signal generator circuit and X shift register modules. The start/end signal generator circuit is configured to sequentially output N start signals and N end signals according to a first control signal, a second control signal and N groups of clock signals. Each start and end signals have a delay relative to the previous one. Each group of clock signals includes a first clock signal and a second clock signal, which are inverted to each other. The X shift register modules are electrically coupled to the start/end signal generator circuit and each includes N shift register units. The Mth shift register unit of the first shift register module outputs a gate signal according to the Mth group of clock signals, the Mth start signal, and the gate signal outputted from the Mth shift register unit in the second shift register module.Type: GrantFiled: December 9, 2014Date of Patent: July 26, 2016Assignee: AU OPTRONICS CORP.Inventors: Chien-Chuan Ko, Meng-Chieh Tsai
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Publication number: 20150369690Abstract: An inspection method for inspecting the water resistance of an electronic device is provided, including providing a vacuum generator, using the vacuum generator to pump air out of the electronic device, stopping the pumping of air out of the electronic device when the air pressure in the electronic device is less than a predetermined pressure value, measuring the air pressure in the electronic device as a first pressure value after the pumping of air out of the electronic device has been stopped for a predetermined time, calculating the pressure difference D by subtracting a second pressure value from the predetermined pressure value, calculating the pressure difference d by subtracting the second pressure value from the first pressure value, and determining whether the electronic device is waterproof or not according to the pressure differences D and d.Type: ApplicationFiled: January 7, 2015Publication date: December 24, 2015Applicant: HTC CORPORATIONInventors: Shen-Chun FAN, Chien-Chuan KO
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Publication number: 20150340011Abstract: A driving method for a display panel is disclosed. The display panel includes a plurality of gate lines. The driving method includes: driving the plurality of gate lines in a first preset sequence and a second preset sequence by turns, wherein the first preset sequence is defined from the first of the plurality of gate lines to the last of the plurality of gate lines, the second preset sequence is defined from the last of the plurality of gate lines to the first of the plurality of gate lines, and driving periods of each two adjacent gate lines partially overlap; and adjusting a voltage difference, between a high-voltage level and a low-voltage level, of each gate pulse provided to the gate lines when the gate lines are driven either in the first sequence or in the second sequence.Type: ApplicationFiled: August 1, 2014Publication date: November 26, 2015Inventors: Chien-Chuan KO, Meng-Chieh TSAI
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Publication number: 20150332649Abstract: A multi-phase gate driver includes a start/end signal generator circuit and X shift register modules. The start/end signal generator circuit is configured to sequentially output N start signals and N end signals according to a first control signal, a second control signal and N groups of clock signals. Each start and end signals have a delay relative to the previous one. Each group of clock signals includes a first clock signal and a second clock signal, which are inverted to each other. The X shift register modules are electrically coupled to the start/end signal generator circuit and each includes N shift register units. The Mth shift register unit of the first shift register module outputs a gate signal according to the Mth group of clock signals, the Mth start signal, and the gate signal outputted from the Mth shift register unit in the second shift register module.Type: ApplicationFiled: December 9, 2014Publication date: November 19, 2015Inventors: Chien-Chuan KO, Meng-Chieh TSAI
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Patent number: 9064466Abstract: A liquid crystal display (LCD) and a shift register device thereof are disclosed. The shift register device includes a plurality of serially connected shift registers for sequentially generating a plurality of scan signals. Each of the shift registers generates one of the scan signals according to a predetermined activating signal and a plurality of clock signals. The shift registers are categorized into a first group, a second group, and a third group. The first group of shift registers and the second group of shift registers have different circuit structures. The second group of shift registers and the third group of shift registers have different circuit structures. The first group of shift registers and the third group of shift registers have different circuit structures.Type: GrantFiled: April 1, 2013Date of Patent: June 23, 2015Assignee: HannStar Display CorporationInventors: Wen-Zhe Lin, Chun-Chin Tseng, Ya-Wen Lee, Chien-Chuan Ko, Hsin-Han Tsai
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Patent number: 9042509Abstract: An LCD and a bidirectional shift register device thereof are provided. The bidirectional shift register device of the invention is disposed on the substrate of the panel and includes multi-stages shift registers in series connection. Each stage shift register includes a pre-charging unit, a pull-up unit and a pull-down unit, in which the pre-charging unit receives a first preset clock signal and the output from a (i?1)th stage shift register or a (i+1)th stage shift register so as to thereby output a charging signal. The pull-up unit receives the charging signal and a second preset clock signal so as to thereby output a scan signal. The pull-down unit receives the second preset clock signal, a third preset clock signal and the output from the (i+2)th stage shift register or the (i?2)th stage shift register so as to decide whether or not pulling down the scan signal to a reference level.Type: GrantFiled: July 5, 2013Date of Patent: May 26, 2015Assignee: HannStar Display CorporationInventors: Chia-Hua Yu, Chien-Ting Chan, Chien-Chuan Ko, Chun-Lin Chang
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Publication number: 20140285743Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal layer, wherein the first substrate is disposed below the second substrate and the liquid crystal layer is disposed between the first substrate and the second substrates. The liquid crystal display further includes at least one thin film transistor, a common electrode, a first insulating layer, and at least one pixel electrode disposed on the upper surface of the first substrate in order. A plurality of bumps are disposed on the lower surface of the second substrate. The thin film transistor includes a gate, a source, and a drain.Type: ApplicationFiled: November 19, 2013Publication date: September 25, 2014Applicant: HannStar Display Corp.Inventors: Chia-Hua Yu, Sung-Chun Lin, Chien-Chuan Ko, Hsien-Cheng Chang, Hsuan-Chen Liu
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Publication number: 20140055333Abstract: A liquid crystal display (LCD) and a shift register device thereof are disclosed. The shift register device includes a plurality of serially connected shift registers for sequentially generating a plurality of scan signals. Each of the shift registers generates one of the scan signals according to a predetermined activating signal and a plurality of clock signals. The shift registers are categorized into a first group, a second group, and a third group. The first group of shift registers and the second group of shift registers have different circuit structures. The second group of shift registers and the third group of shift registers have different circuit structures. The first group of shift registers and the third group of shift registers have different circuit structures.Type: ApplicationFiled: April 1, 2013Publication date: February 27, 2014Inventors: Wen-Zhe Lin, Chun-Chin Tseng, Ya-Wen Lee, Chien-Chuan Ko, Hsin-Han Tsai
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Publication number: 20140049712Abstract: An LCD and a bidirectional shift register device thereof are provided. The bidirectional shift register device of the invention is disposed on the substrate of the panel and includes multi-stages shift registers in series connection. Each stage shift register includes a pre-charging unit, a pull-up unit and a pull-down unit, in which the pre-charging unit receives a first preset clock signal and the output from a (i?1)th stage shift register or a (i+1)th stage shift register so as to thereby output a charging signal. The pull-up unit receives the charging signal and a second preset clock signal so as to thereby output a scan signal. The pull-down unit receives the second preset clock signal, a third preset clock signal and the output from the (i+2)th stage shift register or the (i?2)th stage shift register so as to decide whether or not pulling down the scan signal to a reference level.Type: ApplicationFiled: July 5, 2013Publication date: February 20, 2014Inventors: Chia-Hua Yu, Chien-Ting Chan, Chien-Chuan Ko, Chun-Lin Chang
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Patent number: 8604705Abstract: A compensation circuit of organic light emitting diode comprising a first capacitor, a second capacitor, a stabilizer unit, a third transistor, an organic light emitting diode and a driver unit. The stabilizer unit comprises a first transistor, a second transistor and a photodiode. The driver unit comprises a fourth transistor, a fifth transistor and a sixth transistor. The fifth transistor is used for driving the organic light emitting diode. The first transistor, the second transistor, the third transistor, the fourth transistor and the sixth transistor are used as switches. The first capacitor is used as a compensation capacitor. The second capacitor is used for storing a data voltage. By controlling a voltage of a node in the circuit, the current of the organic light emitting diode can be increased to maintain a stable brightness of the organic light emitting diode.Type: GrantFiled: January 26, 2012Date of Patent: December 10, 2013Assignee: Hannstar Display CorporationInventors: Chien-Chuan Ko, Chao-Hui Wu