Patents by Inventor Li-Lun Chi
Li-Lun Chi 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: 11308890Abstract: Embodiments relate to a signal detector circuit suitable for a display device that detects and decodes a power line communication signal. The signal detector circuit includes an averaging circuit, a comparator, a sampling circuit, a decoder circuit, and a regulator circuit. The averaging circuit receives the power line communication signal and averages the power line communication signal over time to generate an average signal. The comparator compares the average signal to the power line communication signal and generates a comparison signal. The sampling circuit samples the comparison signal according to a sample timing of a clock signal and generates a sampled signal. The decoder circuit decodes the sampled signal and generates a decoded output signal. The regulator circuit receives the power line communication signal and generates supply voltage to power the comparator, the sampling circuit, and the decoder circuit.Type: GrantFiled: July 31, 2020Date of Patent: April 19, 2022Assignee: Huayuan Semiconductor (Shenzhen) Limited CompanyInventors: Richard Landry Gray, Li-Lun Chi
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Patent number: 11289011Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.Type: GrantFiled: July 7, 2020Date of Patent: March 29, 2022Assignee: Huayuan Semiconductor (Shenzhen) Limited CompanyInventors: Chih-Chang Wei, Jyun-Long Lin, Yung-Ting Chen, Li-Lun Chi, Junjie Zheng, Richard Landry Gray
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Patent number: 11257421Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.Type: GrantFiled: July 7, 2020Date of Patent: February 22, 2022Assignee: Huayuan Semiconductor (Shenzhen) Limited CompanyInventors: Chih-Chang Wei, Jyun-Long Lin, Yung-Ting Chen, Li-Lun Chi, Junjie Zheng, Richard Landry Gray
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Publication number: 20220036831Abstract: Embodiments relate to a signal detector circuit suitable for a display device that detects and decodes a power line communication signal. The signal detector circuit includes an averaging circuit, a comparator, a sampling circuit, a decoder circuit, and a regulator circuit. The averaging circuit receives the power line communication signal and averages the power line communication signal over time to generate an average signal. The comparator compares the average signal to the power line communication signal and generates a comparison signal. The sampling circuit samples the comparison signal according to a sample timing of a clock signal and generates a sampled signal. The decoder circuit decodes the sampled signal and generates a decoded output signal. The regulator circuit receives the power line communication signal and generates supply voltage to power the comparator, the sampling circuit, and the decoder circuit.Type: ApplicationFiled: July 31, 2020Publication date: February 3, 2022Inventors: Richard Landry Gray, Li-Lun Chi
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Publication number: 20220020316Abstract: A display device comprises an array of driver circuits and LED zones distributed in a display area. A set of shared lines couple includes column lines coupling driver circuits in respective columns and row lines coupling driver circuits in respective rows. During an addressing mode, a control circuit assigns addresses to the driver circuits using a combination of the row lines and the column lines. During an operational mode, the control circuit sends driver control commands to the driver circuits utilizing the assigned addresses to control brightness of the LED zones. The control circuit may also send readback commands to the driver circuits to obtain readback data relating to sensed conditions. The control circuit may adjust the driver control commands based on the sensed conditions.Type: ApplicationFiled: January 14, 2021Publication date: January 20, 2022Inventors: Richard Landry Gray, Chih-Chang Wei, Junjie Zheng, Li-lun Chi
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Patent number: 11217153Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are coupled to each other and to the control circuit in a serial communication chain via serial communication lines. The group of driver circuits are also coupled in parallel to a shared multi-wire command line that provides a high-speed interface for providing the driver control signals from the control circuit. The control circuit may furthermore issue readback commands to the driver circuits via the shared multi-wire command line or the serial communication chain. In response to the commands, the driver circuits provide readback data via a readback line through the serial communication chain or via parallel connections from the driver circuits.Type: GrantFiled: December 23, 2020Date of Patent: January 4, 2022Assignee: Huayuan Semiconductor (Shenzhen) Limited CompanyInventors: Junjie Zheng, Richard Landry Gray, Chih-Chang Wei, Li-Lun Chi
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Patent number: 11189220Abstract: A display device includes a control circuit, an array of LED zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are connected in a serial chain by a set of communication lines. The group of driver circuits are configurable between a serial communication mode and a parallel communication mode. In the serial communication mode, each driver circuit receives an incoming signal on an input pin, processes the signal through serial communication logic to generate an outgoing signal, and outputs the outgoing signal to an output pin such that the driver circuits serially process the incoming signal. In the parallel communication mode, each driver circuit transfers the incoming signal from the input pin to the output pin bypassing the serial communication logic such that all driver circuits in the group can process the incoming signal in parallel.Type: GrantFiled: March 10, 2021Date of Patent: November 30, 2021Assignee: Huayuan Semiconductor (Shenzhen) Limited CompanyInventors: Junjie Zheng, Richard Landry Gray, Chih-Chang Wei, Li-lun Chi
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Publication number: 20210056893Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.Type: ApplicationFiled: July 7, 2020Publication date: February 25, 2021Inventors: Chih-Chang Wei, Jyun-Long Lin, Yung-Ting Chen, Li-Lun Chi, Junjie Zheng, Richard Landry Gray
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Publication number: 20210056892Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.Type: ApplicationFiled: July 7, 2020Publication date: February 25, 2021Inventors: Chih-Chang Wei, Jyun-Long Lin, Yung-Ting Chen, Li-Lun Chi, Junjie Zheng, Richard Landry Gray
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Publication number: 20210056891Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.Type: ApplicationFiled: July 7, 2020Publication date: February 25, 2021Inventors: Chih-Chang Wei, Jyun-Long Lin, Yung-Ting Chen, Li-Lun Chi, Junjie Zheng, Richard Landry Gray
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Patent number: 10909911Abstract: Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are coupled to each other and to the control circuit in a serial communication chain via serial communication lines. The group of driver circuits are also coupled in parallel to a shared multi-wire command line that provides a high-speed interface for providing the driver control signals from the control circuit. The control circuit may furthermore issue readback commands to the driver circuits via the shared multi-wire command line or the serial communication chain. In response to the commands, the driver circuits provide readback data via a readback line through the serial communication chain or via parallel connections from the driver circuits.Type: GrantFiled: September 18, 2020Date of Patent: February 2, 2021Assignee: HUAYUAN SEMICONDUCTOR (SHENZHEN) LIMITED COMPANYInventors: Junjie Zheng, Richard Landry Gray, Chih-Chang Wei, Li-Lun Chi
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Patent number: 9859740Abstract: An adapter, a portable electronic device and a charge control method thereof are provided. The adapter includes a connector and a controller. The connector includes a first terminal. The controller is electrically connected to the connector and determines whether to enter a quick charge mode according to a control signal from the connector. In the quick charge mod, the controller receives a charge control signal from the first terminal. The charge control signal has a plurality of pulses, and encoding information is formed by the plurality of pulses. The adapter is controlled by the controller according to the encoding information so as to provide a quick charge voltage.Type: GrantFiled: May 26, 2015Date of Patent: January 2, 2018Assignee: uPI Semiconductor Corp.Inventor: Li-Lun Chi
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Publication number: 20160105038Abstract: An adapter, a portable electronic device and a charge control method thereof are provided. The adapter includes a connector and a controller. The connector includes a first terminal. The controller is electrically connected to the connector and determines whether to enter a quick charge mode according to a control signal from the connector. In the quick charge mod, the controller receives a charge control signal from the first terminal. The charge control signal has a plurality of pulses, and encoding information is formed by the plurality of pulses. The adapter is controlled by the controller according to the encoding information so as to provide a quick charge voltage.Type: ApplicationFiled: May 26, 2015Publication date: April 14, 2016Inventor: Li-Lun Chi
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Publication number: 20100231290Abstract: A measurement device independent of an integrated circuit including a transistor is disclosed. A current supply provides a first current and a second current. A switching unit transmits the first or the second current to the transistor. A current detection unit generates a first voltage and a second voltage according to a first base current of the transistor and the first current and generates a third voltage and a fourth voltage according to a second base current of the transistor and the second current. A voltage processing unit processes the first and the second voltages to generate a first differential value and processes the third and the fourth voltages to generate a second difference value. A calculation unit divides the second differential value by the first differential value to obtain a current ratio and adjusts at least one of the first and the second currents according to the current ratio.Type: ApplicationFiled: March 16, 2009Publication date: September 16, 2010Inventor: Li-Lun CHI
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Patent number: 7019582Abstract: A silicon-on-insulator device structure having a silicon-on-insulator substrate, a transistor and a control transistor is provided. The transistor and the control transistor are disposed on the silicon-on-insulator substrate. The transistor and the control transistor share a common source region. The drain region of the transistor is electrically connected to the main body of the transistor. By forming of a control transistor between the source terminal and the main body of the transistor and switching the control transistor on or off on demand, the silicon-on-insulator device embodies the advantages of both floating-body effect and body-tied characteristic.Type: GrantFiled: September 29, 2004Date of Patent: March 28, 2006Assignee: Powerchip Semiconductor Corp.Inventors: Chiu-Tsung Huang, Ke-Kung Liao, Jen-Chi Chung, Li-Lun Chi
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Publication number: 20050029590Abstract: A silicon-on-insulator device structure having a silicon-on-insulator substrate, a transistor and a control transistor is provided. The transistor and the control transistor are disposed on the silicon-on-insulator substrate. The transistor and the control transistor share a common source region. The drain region of the transistor is electrically connected to the main body of the transistor. By forming of a control transistor between the source terminal and the main body of the transistor and switching the control transistor on or off on demand, the silicon-on-insulator device embodies the advantages of both floating-body effect and body-tied characteristic.Type: ApplicationFiled: September 29, 2004Publication date: February 10, 2005Inventors: Chiu-Tsung Huang, Ke-Kung Liao, Jen-Chi Chung, Li-Lun Chi
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Patent number: 6828633Abstract: A silicon-on-insulator device structure having a silicon-on-insulator substrate, a transistor and a control transistor is provided. The transistor and the control transistor are disposed on the silicon-on-insulator substrate. The transistor and the control transistor share a common source region. The drain region of the transistor is electrically connected to the main body of the transistor. By forming of a control transistor between the source terminal and the main body of the transistor and switching the control transistor on or off on demand, the silicon-on-insulator device embodies the advantages of both floating-body effect and body-tied characteristic.Type: GrantFiled: February 26, 2003Date of Patent: December 7, 2004Assignee: Powerchip Semiconductor Corp.Inventors: Chiu-Tsung Huang, Ke-Kung Liao, Jen-Chi Chung, Li-Lun Chi
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Publication number: 20040089899Abstract: A silicon-on-insulator device structure having a silicon-on-insulator substrate, a transistor and a control transistor is provided. The transistor and the control transistor are disposed on the silicon-on-insulator substrate. The transistor and the control transistor share a common source region. The drain region of the transistor is electrically connected to the main body of the transistor. By forming of a control transistor between the source terminal and the main body of the transistor and switching the control transistor on or off on demand, the silicon-on-insulator device embodies the advantages of both floating-body effect and body-tied characteristic.Type: ApplicationFiled: February 26, 2003Publication date: May 13, 2004Inventors: CHIU-TSUNG HUANG, KE-KUNG LIAO, JEN-CHI CHUNG, LI-LUN CHI