Patents by Inventor Shang-I Liu
Shang-I 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).
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Publication number: 20240126327Abstract: The present disclosure provides an electronic wearable device. The electronic wearable device includes a first module having a first contact and a second module having a second contact. The first contact is configured to keep electrical connection with the second contact in moving with respect to each other during a wearing period.Type: ApplicationFiled: October 14, 2022Publication date: April 18, 2024Applicant: Advanced Semiconductor Engineering, Inc.Inventors: Chao Wei LIU, Wei-Hao CHANG, Yung-I YEH, Jen-Chieh KAO, Tun-Ching PI, Ming-Hung CHEN, Hui-Ping JIAN, Shang-Lin WU
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Patent number: 11030928Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: GrantFiled: January 16, 2020Date of Patent: June 8, 2021Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Patent number: 10720106Abstract: A driving apparatus for driving a display panel including a connection pad, a selecting circuit, a data driving circuit and a detection circuit is provided. The selecting circuit is electrically connected to a data line of the display panel through the connection pad. The data driving circuit outputs a data voltage to a pixel circuit of the display panel through the selecting circuit and the connection pad in a display stage. The detection circuit provides a detection signal to a light-emitting element of the pixel circuit through the selecting circuit and the connection pad in a detection stage, and detects a resultant signal with respect to an electric characteristic of the light-emitting element of the pixel circuit in the detection stage.Type: GrantFiled: November 21, 2018Date of Patent: July 21, 2020Assignee: Novatek Microelectronics Corp.Inventors: Hua-Gang Chang, Shang-I Liu
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Publication number: 20200152104Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: ApplicationFiled: January 16, 2020Publication date: May 14, 2020Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Patent number: 10586480Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: GrantFiled: September 10, 2019Date of Patent: March 10, 2020Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Publication number: 20200005694Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: ApplicationFiled: September 10, 2019Publication date: January 2, 2020Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Patent number: 10453368Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: GrantFiled: January 8, 2019Date of Patent: October 22, 2019Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Patent number: 10388207Abstract: An external compensation method for devices in a panel which comprises a plurality of sub-pixels, includes programming a first device in a first sub-pixel among the plurality of sub-pixels via a first line and sensing the first device via a second line during a first period; and programming a second device in a second sub-pixel among the plurality of sub-pixels via the second line and sensing the second device via the first line or a third line during a second period.Type: GrantFiled: August 17, 2016Date of Patent: August 20, 2019Assignee: NOVATEK Microelectronics Corp.Inventors: Hua-Gang Chang, Shang-I Liu, Chun-Chieh Lin
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Publication number: 20190156757Abstract: A driving apparatus for driving a display panel including a connection pad, a selecting circuit, a data driving circuit and a detection circuit is provided. The selecting circuit is electrically connected to a data line of the display panel through the connection pad. The data driving circuit outputs a data voltage to a pixel circuit of the display panel through the selecting circuit and the connection pad in a display stage. The detection circuit provides a detection signal to a light-emitting element of the pixel circuit through the selecting circuit and the connection pad in a detection stage, and detects a resultant signal with respect to an electric characteristic of the light-emitting element of the pixel circuit in the detection stage.Type: ApplicationFiled: November 21, 2018Publication date: May 23, 2019Applicant: Novatek Microelectronics Corp.Inventors: Hua-Gang Chang, Shang-I Liu
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Publication number: 20190139471Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: ApplicationFiled: January 8, 2019Publication date: May 9, 2019Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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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: 10210783Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a scan-line period for scanning one of the scan lines. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits according to the scan-line period for scanning one of the scan lines, wherein the scan-line period comprises a display data period and a test data period. In the test data period, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: GrantFiled: August 27, 2018Date of Patent: February 19, 2019Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Publication number: 20180366046Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a scan-line period for scanning one of the scan lines. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits according to the scan-line period for scanning one of the scan lines, wherein the scan-line period comprises a display data period and a test data period. In the test data period, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: ApplicationFiled: August 27, 2018Publication date: December 20, 2018Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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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: 10083498Abstract: A compensation method for a driving circuit of a display device includes generating a motion vector between a previous frame and a current frame subsequent to the previous frame; generating a first estimation frame according to the current frame and the motion vector; adjusting the first estimation frame according to the difference between the current frame and the first estimation frame, to generate a first overdrive frame; and inserting the first overdrive frame between the current frame and a next frame subsequent to the current frame.Type: GrantFiled: February 24, 2016Date of Patent: September 25, 2018Assignee: NOVATEK Microelectronics Corp.Inventors: Kuei-Chung Chang, Shang-I Liu, Pu-Hsien Chang
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Patent number: 10068528Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a gate driving circuit and a sensing circuit. The gate driving circuit may scan the scan-lines during a plurality of scan-line periods within a frame period. The sensing circuit is coupled to a plurality of pixel circuits. A corresponding scan-line period of the scan-line periods is divided into a test data period and a display data period. In the test data period, the sensing circuit controls a corresponding pixel circuit to receive the test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the sensing circuit controls the corresponding pixel circuit to receive the display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: GrantFiled: September 8, 2016Date of Patent: September 4, 2018Assignee: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Publication number: 20180068618Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a gate driving circuit and a sensing circuit. The gate driving circuit may scan the scan-lines during a plurality of scan-line periods within a frame period. The sensing circuit is coupled to a plurality of pixel circuits. A corresponding scan-line period of the scan-line periods is divided into a test data period and a display data period. In the test data period, the sensing circuit controls a corresponding pixel circuit to receive the test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the sensing circuit controls the corresponding pixel circuit to receive the display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.Type: ApplicationFiled: September 8, 2016Publication date: March 8, 2018Applicant: Novatek Microelectronics Corp.Inventors: Chun-Chieh Lin, Shang-I Liu, Hua-Gang Chang
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Publication number: 20170352305Abstract: An external compensation method for devices in a panel which comprises a plurality of sub-pixels, includes programming a first device in a first sub-pixel among the plurality of sub-pixels via a first line and sensing the first device via a second line during a first period; and programming a second device in a second sub-pixel among the plurality of sub-pixels via the second line and sensing the second device via the first line or a third line during a second period.Type: ApplicationFiled: August 17, 2016Publication date: December 7, 2017Inventors: Hua-Gang Chang, Shang-I Liu, Chun-Chieh Lin
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Publication number: 20170243331Abstract: A compensation method for a driving circuit of a display device includes generating a motion vector between a previous frame and a current frame subsequent to the previous frame; generating a first estimation frame according to the current frame and the motion vector; adjusting the first estimation frame according to the difference between the current frame and the first estimation frame, to generate a first overdrive frame; and inserting the first overdrive frame between the current frame and a next frame subsequent to the current frame.Type: ApplicationFiled: February 24, 2016Publication date: August 24, 2017Inventors: Kuei-Chung Chang, Shang-I Liu, Pu-Hsien Chang
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Publication number: 20160189682Abstract: A display apparatus and a method for controlling a refresh frequency thereof are provided. The method includes: dividing a display image into a plurality of sub-display images; calculating a plurality of refresh frequency request values respectively corresponding to the sub-display images according to a plurality of patterns respectively corresponding to the sub-display images; and, calculating a refresh frequency of the display image according to the refresh frequency request values.Type: ApplicationFiled: March 11, 2015Publication date: June 30, 2016Inventor: Shang-I Liu