Patents by Inventor Po-Yu Tseng
Po-Yu Tseng 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: 10326411Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.Type: GrantFiled: November 3, 2017Date of Patent: June 18, 2019Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Patent number: 10224886Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes a first current source, a first transistor, a second transistor, a third transistor, and a fourth transistor. The control terminal of the first transistor receives a first input signal. The control terminal of the second transistor receives a second input signal. The third transistor has a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the second transistor. The fourth transistor has a first terminal coupled to the second terminal of the second transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the first transistor.Type: GrantFiled: September 27, 2017Date of Patent: March 5, 2019Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
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Patent number: 10163416Abstract: A display apparatus and a driving method of the same are provided. The display apparatus includes a display panel, a gate driver circuit, and a source driver circuit. During a functional sub-period of a frame period, the gate driver circuit simultaneously drives a plurality of gate lines, and the source driver circuit drives a plurality of source lines, so as to perform a function on a plurality of pixels connected to the gate lines. In a scan sub-period of the frame period, the gate driver circuit drives the gate lines according to a scan sequence, and the source driver circuit correspondingly drives the source lines according to the scan sequence of the gate driver circuit in the first scan sub-period, so as to display an image.Type: GrantFiled: July 17, 2015Date of Patent: December 25, 2018Assignee: Novatek Microelectronics Corp.Inventors: Chieh-An Lin, Jhih-Siou Cheng, Po-Hsiang Fang, Po-Yu Tseng, Ju-Lin Huang, Yi-Chuan Liu
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Publication number: 20180337642Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes an input circuit, a voltage maintaining circuit, and a current source. The input circuit includes a first input transistor and a second input transistor, for receiving a first and a second input signals, respectively. The voltage maintaining circuit includes a first branch circuit and a second branch circuit. The first branch circuit is coupled to the first input transistor for receiving the first input signal, and the second branch circuit is coupled to the second input transistor for receiving the second input signal. The current source is coupled to the first input transistor and the second input transistor. The loading stage circuit is coupled to the voltage maintaining circuit.Type: ApplicationFiled: November 3, 2017Publication date: November 22, 2018Inventors: Chih-Wen Lu, Chih-Hsien Chou, Po-Yu Tseng, Jhih-Siou Cheng
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Publication number: 20180337646Abstract: An operational amplifier circuit is provided. The operational amplifier circuit includes a differential input stage circuit and a loading stage circuit. The differential input stage circuit includes a first current source, a first transistor, a second transistor, a third transistor, and a fourth transistor. The control terminal of the first transistor receives a first input signal. The control terminal of the second transistor receives a second input signal. The third transistor has a first terminal coupled to the second terminal of the first transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the second transistor. The fourth transistor has a first terminal coupled to the second terminal of the second transistor, a second terminal coupled to the first current source, and a control terminal coupled to the control terminal of the first transistor.Type: ApplicationFiled: September 27, 2017Publication date: November 22, 2018Inventors: Chih-Wen Lu, Po-Yu Tseng, Jhih-Siou Cheng, Shang-I Liu, Chih-Hsien Chou
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Patent number: 9875707Abstract: A display apparatus and a gate driving method thereof are provided. The display apparatus includes a display panel and a gate driver. The display panel has a plurality of gate lines. Output terminals of the gate driver are coupled to the gate lines in a one-to-one manner. The gate driver is configured to drive the gate lines according to a scrambled scan sequence.Type: GrantFiled: May 11, 2015Date of Patent: January 23, 2018Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Po-Hsiang Fang, Po-Yu Tseng, Chieh-An Lin, Ju-Lin Huang, Yi-Chuan Liu
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Patent number: 9842528Abstract: A driving device is provided. The driving device includes a first code mapping circuit, a first source driving channel, a second code mapping circuit and a second source driving channel. The first code mapping circuit converts a first input code in input data into a first intermediate code according to a first code-to-code mapping relation. The first source driving channel converts the first intermediate code into a first analog voltage according to a first code-to-voltage mapping relation. The second code mapping circuit converts a second input code in the input data into a second intennediate code according to a second code-to-code mapping relation which is different from the first code-to-code mapping relation. The second source driving channel converts the second intermediate code into a second analog voltage according to a second code-to-voltage mapping relation which is different from the first code-to-voltage mapping relation.Type: GrantFiled: September 6, 2016Date of Patent: December 12, 2017Assignee: Novatek Microelectronics Corp.Inventors: Po-Yu Tseng, Jhih-Siou Cheng, Pang-Chen Hung
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Patent number: 9659539Abstract: A gate driver, a display apparatus having the same, and a gate driving method are provided. The display apparatus includes a plurality of pixels, a data driver circuit, and a gate driver circuit. The gate driver circuit includes M groups of gate channels. Each of the M groups of gate channels includes a control circuit and an output buffer. The control circuit receives a power supply voltage from a power supply circuit and generates a modulated supply voltage. The output buffer is connected to the control circuit, the output buffer is powered by the modulated supply voltage to output a gate signal to a gate line of the display panel, wherein a driving pulse of the gate signal is shaped during a charge period according to the modulated supply voltage, and the shape of the driving pulse of the gate signal is maintained during a pre-charge period.Type: GrantFiled: April 16, 2015Date of Patent: May 23, 2017Assignee: Novatek Microelectronics Corp.Inventors: Po-Yu Tseng, Chieh-An Lin, Po-Hsiang Fang, Jhih-Siou Cheng, Ju-Lin Huang, Yi-Chuan Liu
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Patent number: 9626925Abstract: A source driver apparatus and an operating method thereof are provided. The source driver apparatus can drive a plurality of source lines of a display panel, wherein the display panel further comprising a gate driver apparatus. The source driver apparatus includes driving channels and a delay control circuit. The driving channels output source driving signals. The delay control circuit controls the driving channels to change delay times of the source driving signals within the same period, such that the delay times of the source driving signals respectively correspond to distances from the source lines to the gate driver apparatus.Type: GrantFiled: March 26, 2015Date of Patent: April 18, 2017Assignee: Novatek Microelectronics Corp.Inventors: Jhih-Siou Cheng, Po-Hsiang Fang, Chieh-An Lin, Po-Yu Tseng, Ju-Lin Huang, Yi-Chuan Liu
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Publication number: 20170092572Abstract: A chip-on-film package including a flexible substrate, first test pads, second test pads, first connecting wires, second connecting wires and a chip is provided. The flexible substrate includes at least one segment. Each segment has a central portion and a first side portion and a second side portion located at two opposite sides of the central portion. The chip disposed on the central portion includes first connecting pads and second connecting pads. The first test pads and the second test pads are disposed on the first side portion. Two ends of each of the first connecting wires are connected to the corresponding first connecting pad and the corresponding first test pad. Two ends of each of the second connecting wires are connected to the corresponding second connecting pad and the corresponding second test pad. Each of the second connecting wires includes a first section located at the second side portion.Type: ApplicationFiled: December 15, 2015Publication date: March 30, 2017Inventors: Jhih-Siou Cheng, Chun-Yung Cho, Po-Yu Tseng
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Publication number: 20170018242Abstract: A display apparatus and a driving method of the same are provided. The display apparatus includes a display panel, a gate driver circuit, and a source driver circuit. During a functional sub-period of a frame period, the gate driver circuit simultaneously drives a plurality of gate lines, and the source driver circuit drives a plurality of source lines, so as to perform a function on a plurality of pixels connected to the gate lines. In a scan sub-period of the frame period, the gate driver circuit drives the gate lines according to a scan sequence, and the source driver circuit correspondingly drives the source lines according to the scan sequence of the gate driver circuit in the first scan sub-period, so as to display an image.Type: ApplicationFiled: July 17, 2015Publication date: January 19, 2017Inventors: Chieh-An Lin, Jhih-Siou Cheng, Po-Hsiang Fang, Po-Yu Tseng, Ju-Lin Huang, Yi-Chuan Liu
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Patent number: 9536462Abstract: A driving device and a source driving method are provided. The driving device includes a first code mapping unit, a first source driving channel, a second code mapping unit and a second source driving channel. The first code mapping unit converts a first input code in input data into a first intermediate code according to a first code-to-code mapping relation. The first source driving channel converts the first intermediate code into a first analog voltage according to a first code-to-voltage mapping relation. The second code mapping unit converts a second input code in the input data into a second intermediate code according to a second code-to-code mapping relation which is different from the first code-to-code mapping relation. The second source driving channel converts the second intermediate code into a second analog voltage according to a second code-to-voltage mapping relation which is different from the first code-to-voltage mapping relation.Type: GrantFiled: November 6, 2014Date of Patent: January 3, 2017Assignee: Novatek Microelectronics Corp.Inventors: Po-Yu Tseng, Jhih-Siou Cheng, Pang-Chen Hung
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Publication number: 20160372018Abstract: A driving device is provided. The driving device includes a first code mapping circuit, a first source driving channel, a second code mapping circuit and a second source driving channel. The first code mapping circuit converts a first input code in input data into a first intermediate code according to a first code-to-code mapping relation. The first source driving channel converts the first intermediate code into a first analog voltage according to a first code-to-voltage mapping relation. The second code mapping circuit converts a second input code in the input data into a second intennediate code according to a second code-to-code mapping relation which is different from the first code-to-code mapping relation. The second source driving channel converts the second intermediate code into a second analog voltage according to a second code-to-voltage mapping relation which is different from the first code-to-voltage mapping relation.Type: ApplicationFiled: September 6, 2016Publication date: December 22, 2016Applicant: Novatek Microelectronics Corp.Inventors: Po-Yu Tseng, Jhih-Siou Cheng, Pang-Chen Hung
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Publication number: 20160335970Abstract: A display apparatus and a gate driving method thereof are provided. The display apparatus includes a display panel and a gate driver. The display panel has a plurality of gate lines. Output terminals of the gate driver are coupled to the gate lines in a one-to-one manner. The gate driver is configured to drive the gate lines according to a scrambled scan sequence.Type: ApplicationFiled: May 11, 2015Publication date: November 17, 2016Inventors: Jhih-Siou Cheng, Po-Hsiang Fang, Po-Yu Tseng, Chieh-An Lin, Ju-Lin Huang, Yi-Chuan Liu
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Publication number: 20160307529Abstract: A gate driver, a display apparatus having the same, and a gate driving method are provided. The display apparatus includes a plurality of pixels, a data driver circuit, and a gate driver circuit. The gate driver circuit includes M groups of gate channels. Each of the M groups of gate channels includes a control circuit and an output buffer. The control circuit receives a power supply voltage from a power supply circuit and generates a modulated supply voltage. The output buffer is connected to the control circuit, the output buffer is powered by the modulated supply voltage to output a gate signal to a gate line of the display panel, wherein a driving pulse of the gate signal is shaped during a charge period according to the modulated supply voltage, and the shape of the driving pulse of the gate signal is maintained during a pre-charge period.Type: ApplicationFiled: April 16, 2015Publication date: October 20, 2016Inventors: Po-Yu Tseng, Chieh-An Lin, Po-Hsiang Fang, Jhih-Siou Cheng, Ju-Lin Huang, Yi-Chuan Liu
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Publication number: 20160284297Abstract: A source driver apparatus and an operating method thereof are provided. The source driver apparatus can drive a plurality of source lines of a display panel, wherein the display panel further comprising a gate driver apparatus. The source driver apparatus includes driving channels and a delay control circuit. The driving channels output source driving signals. The delay control circuit controls the driving channels to change delay times of the source driving signals within the same period, such that the delay times of the source driving signals respectively correspond to distances from the source lines to the gate driver apparatus.Type: ApplicationFiled: March 26, 2015Publication date: September 29, 2016Inventors: Jhih-Siou Cheng, Po-Hsiang Fang, Chieh-An Lin, Po-Yu Tseng, Ju-Lin Huang, Yi-Chuan Liu
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Patent number: 9396695Abstract: A source driver includes a first drive channel circuit, a voltage controller and a first programmable voltage buffer unit. The first drive channel circuit receives a first pixel data and a first reference voltage group, for driving the display device. The voltage controller receives a voltage command during a line data transmitting period, a horizontal blanking period or a vertical blanking period for generating a first reference voltage configuration data. The first programmable voltage buffer unit is coupled to the voltage controller and the first drive channel circuit, and receives the first reference voltage configuration data for applying the first reference voltage group to the first drive channel circuit. Furthermore, a method for driving a display device is also provided.Type: GrantFiled: December 4, 2014Date of Patent: July 19, 2016Assignee: Novatek Microelectronics Corp.Inventors: Jr-Ching Lin, Hsin-Hung Lee, Chia-Wei Su, Po-Yu Tseng, Shun-Hsun Yang, Po-Hsiang Fang
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Patent number: 9299309Abstract: The present invention discloses an integrated source driver for a liquid crystal display device. The integrated source driver includes a reference voltage generating circuit, for providing a plurality of adjustable voltage ranges within a supply voltage and a ground level, and a reference voltage selecting circuit, including a plurality of digital to analog converters, for selecting and generating a plurality of internal reference voltages from the plurality of adjustable voltage ranges, respectively. The plurality of adjustable voltage ranges decrease progressively.Type: GrantFiled: August 2, 2013Date of Patent: March 29, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Po-Yu Tseng, Chia-Wei Su, Po-Hsiang Fang, Shun-Hsun Yang, Hsin-Hung Lee
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Publication number: 20160078794Abstract: A driving device and a source driving method are provided. The driving device includes a first code mapping unit, a first source driving channel, a second code mapping unit and a second source driving channel. The first code mapping unit converts a first input code in input data into a first intermediate code according to a first code-to-code mapping relation. The first source driving channel converts the first intermediate code into a first analog voltage according to a first code-to-voltage mapping relation. The second code mapping unit converts a second input code in the input data into a second intermediate code according to a second code-to-code mapping relation which is different from the first code-to-code mapping relation. The second source driving channel converts the second intermediate code into a second analog voltage according to a second code-to-voltage mapping relation which is different from the first code-to-voltage mapping relation.Type: ApplicationFiled: November 6, 2014Publication date: March 17, 2016Inventors: Po-Yu Tseng, Jhih-Siou Cheng, Pang-Chen Hung
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Patent number: 9230495Abstract: A self-detection charge sharing module for a liquid crystal display device is disclosed. The self-detection charge sharing module includes at least one detecting unit, for detecting a plurality of input voltages of a plurality of operational amplifiers driving a plurality of data line sand a plurality of output voltage of the plurality of data line, to generate at least one detecting result, and at least one charge sharing unit, for conducting connection between at least one first data line and at least one second data line among the plurality of data line when the at least one detecting result indicates at least one corresponding first input voltage and at least one corresponding second input voltage among the plurality of input voltage have opposite voltage variation direction and vary toward each other. The at least one first input voltage and the at least one second input voltage maintain respective polarities.Type: GrantFiled: October 7, 2013Date of Patent: January 5, 2016Assignee: NOVATEK Microelectronics Corp.Inventors: Chia-Wei Su, Po-Yu Tseng, Shun-Hsun Yang, Po-Hsiang Fang