Patents by Inventor Chih-Jung Liu
Chih-Jung 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: 20240145398Abstract: A carrier structure is provided, in which at least one positioning area is defined on a chip-placement area of a package substrate, and at least one alignment portion is disposed on the positioning area. Therefore, the precision of manufacturing the alignment portion is improved by disposing the positioning area on the chip-placement area, such that the carrier structure can provide a better alignment mechanism for the chip placement operation.Type: ApplicationFiled: December 8, 2022Publication date: May 2, 2024Applicant: SILICONWARE PRECISION INDUSTRIES CO., LTD.Inventors: Cheng-Liang HSU, Wan-Rou CHEN, Hsin-Yin CHANG, Tsung-Li LIN, Hsiu-Jung LI, Chiu-Lien LI, Fu-Quan XU, Yi-Wen LIU, Chih-Chieh SUN
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Patent number: 11776621Abstract: A memory device and an operation method thereof is disclosed. The memory device includes a SRAM cell and a power supply assist circuit connected to the SRAM cell. The power supply assist circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, and a fifth transistor. The first transistor receives a power supply voltage. The control terminals of the first transistor and the second transistor are connected to each other. The third transistor switches, in response to a first control signal, to connect the control terminal and the connect terminal of the second transistor. The fourth transistor switches, in response to a second control signal, to drive the control terminal of the second transistor to a system ground voltage. The fifth transistor switches, in response to a third control signal, to drive the control terminal of the first transistor to the power supply voltage.Type: GrantFiled: October 22, 2021Date of Patent: October 3, 2023Assignee: NATIONAL CHUNG CHENG UNIVERSITYInventors: Jinn Shyan Wang, Chien Tung Liu, Chih Jung Liu
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Publication number: 20230074722Abstract: A memory device and an operation method thereof is disclosed. The memory device includes a SRAM cell and a power supply assist circuit connected to the SRAM cell. The power supply assist circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, and a fifth transistor. The first transistor receives a power supply voltage. The control terminals of the first transistor and the second transistor are connected to each other. The third transistor switches, in response to a first control signal, to connect the control terminal and the connect terminal of the second transistor. The fourth transistor switches, in response to a second control signal, to drive the control terminal of the second transistor to a system ground voltage. The fifth transistor switches, in response to a third control signal, to drive the control terminal of the first transistor to the power supply voltage.Type: ApplicationFiled: October 22, 2021Publication date: March 9, 2023Inventors: Jinn Shyan WANG, Chien Tung LIU, Chih Jung LIU
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Patent number: 10050188Abstract: A light emitting diode chip comprises a light emitting diode chip core and a coating layer. The coating layer covers side surfaces of the light emitting diode chip core. And a display composed of the light emitting diode chips is also provided.Type: GrantFiled: April 10, 2017Date of Patent: August 14, 2018Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INCInventors: Chia-Hui Shen, Tzu-Chien Hung, Chien-Chung Peng, Chien-Shiang Huang, Shih-Cheng Huang, Chih-Jung Liu
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Patent number: 10020426Abstract: A light emitting device includes a base and a light emitting diode chip, the light emitting diode chip is formed on a top surface of the base, an outline of a projection of the light emitting diode chip projected on the top surface of the base is positioned in the top surface of the base. The light emitting device further includes a light reflecting portion, the light reflecting portion is formed on the top surface of the base, the light reflecting portion is defined around the light emitting diode chip, a height of the light reflecting portion is less than a height of the light emitting diode chip.Type: GrantFiled: April 10, 2017Date of Patent: July 10, 2018Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INCInventors: Chia-Hui Shen, Tzu-Chien Hung, Chien-Chung Peng, Chien-Shiang Huang, Chih-Jung Liu
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Publication number: 20180040793Abstract: A light emitting diode chip comprises a light emitting diode chip core and a coating layer. The coating layer covers side surfaces of the light emitting diode chip core. And a display composed of the light emitting diode chips is also provided.Type: ApplicationFiled: April 10, 2017Publication date: February 8, 2018Inventors: CHIA-HUI SHEN, TZU-CHIEN HUNG, CHIEN-CHUNG PENG, CHIEN-SHIANG HUANG, SHIH-CHENG HUANG, CHIH-JUNG LIU
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Publication number: 20170062516Abstract: A light emitting diode (LED) element includes a first conducting layer, a light emitting layer and a second conducting layer. The light emitting layer and the second conducting layer successively are stacked on the first conducting layer. The first conducting layer includes a plurality of first electrodes spaced apart from each other. The second conducting layer includes a plurality of transparent electrodes spaced apart from each other. The light emitting layer includes a plurality of light emitting structures spaced apart from each other and isolated from each other. The light emitting structures are respectively electrically connected with different first electrodes or different second electrodes.Type: ApplicationFiled: September 22, 2015Publication date: March 2, 2017Inventors: CHIEN-CHUNG PENG, TZU-CHIEN HUNG, CHIH-JUNG LIU
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Patent number: 9231501Abstract: An energy retrieving device includes a first rectifier circuit, a direct current (DC) link circuit, a second rectifier circuit, an energy retrieving unit, a motor controller, and a micro control unit (MCU). The MCU includes an energy retrieving control module, to control the energy retrieving unit to work according to control of a processing module. The processing module detects whether a motor deceleration signal is generated by the motor, and controls the energy retrieving control module to make the energy retrieving unit retrieve power when the motor deceleration signal is generated by the motor.Type: GrantFiled: September 11, 2013Date of Patent: January 5, 2016Assignee: FOXNUM TECHNOLOGY CO., LTD.Inventors: Ching-Hsiung Mao, Chih-Jung Liu
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Patent number: 9171993Abstract: An LED die includes a substrate, a light emitting structure, electrodes, a first transparent protecting layer, a reflection layer, and a second transparent protecting layer. The light emitting structure includes a first semiconductor layer, an active layer, a second semiconductor layer successively formed on the substrate. A part of first semiconductor layer being exposed. A first electrode is formed the first semiconductor layer. A second electrode is formed on the second semiconductor layer. The first transparent protecting layer, the reflection layer, and the second transparent protecting layer successively formed on the first electrode. The present disclosure also provides a method of manufacturing the LED die.Type: GrantFiled: August 14, 2014Date of Patent: October 27, 2015Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.Inventors: Chien-Chung Peng, Tzu-Chien Hung, Chia-Hui Shen, Chih-Jung Liu
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Patent number: 9054288Abstract: A light emitting diode includes a light emitting structure, a transparent conductive layer and a transparent protecting layer formed in sequence. A plurality of holes are defined in the transparent protecting layer to expose the transparent conductive layer out of the transparent protecting layer. A plurality of micro-structures are formed on a top surface of the transparent conductive layer in the holes. The micro-structures refract light emitted from the light emitting structure and travelling through the transparent conductive layer.Type: GrantFiled: October 28, 2012Date of Patent: June 9, 2015Assignee: ADVANCED OPTOELECTRONIC TECHNOLOGY, INC.Inventors: Chih-Jung Liu, Tzu-Chien Hung
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Publication number: 20150048305Abstract: An LED die includes a substrate, a light emitting structure, electrodes, a first transparent protecting layer, a reflection layer, and a second transparent protecting layer. The light emitting structure includes a first semiconductor layer, an active layer, a second semiconductor layer successively formed on the substrate. A part of first semiconductor layer being exposed. A first electrode is formed the first semiconductor layer. A second electrode is formed on the second semiconductor layer. The first transparent protecting layer, the reflection layer, and the second transparent protecting layer successively formed on the first electrode. The present disclosure also provides a method of manufacturing the LED die.Type: ApplicationFiled: August 14, 2014Publication date: February 19, 2015Inventors: CHIEN-CHUNG PENG, TZU-CHIEN HUNG, CHIA-HUI SHEN, CHIH-JUNG LIU
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Publication number: 20140176025Abstract: An energy retrieving device includes a first rectifier circuit, a direct current (DC) link circuit, a second rectifier circuit, an energy retrieving unit, a motor controller, and a micro control unit (MCU). The MCU includes an energy retrieving control module, to control the energy retrieving unit to work according to control of a processing module. The processing module detects whether a motor deceleration signal is generated by the motor, and controls the energy retrieving control module to make the energy retrieving unit retrieve power when the motor deceleration signal is generated by the motor.Type: ApplicationFiled: September 11, 2013Publication date: June 26, 2014Applicant: FOXNUM TECHNOLOGY CO., LTD.Inventors: CHING-HSIUNG MAO, CHIH-JUNG LIU
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Publication number: 20130256702Abstract: A light emitting diode includes a light emitting structure, a transparent conductive layer and a transparent protecting layer formed in sequence. A plurality of holes are defined in the transparent protecting layer to expose the transparent conductive layer out of the transparent protecting layer. A plurality of micro-structures are formed on a top surface of the transparent conductive layer in the holes. The micro-structures refract light emitted from the light emitting structure and travelling through the transparent conductive layer.Type: ApplicationFiled: October 28, 2012Publication date: October 3, 2013Inventors: CHIH-JUNG LIU, TZU-CHIEN HUNG
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Publication number: 20130221953Abstract: An absolute position recording device of a motor includes a main spindle, a magnetic ring, a magnetic induction unit, an encoder, a counter, and an operation unit. The magnetic ring and the encoder are fixed on and rotated by the main spindle. The magnetic induction unit outputs square waves and the encoder outputs sine or cosine waves. The counter receives the square waves and calculates a number of rotations of the magnetic ring. The operation unit receives the sine or cosine waves and calculates an angular deflection relative to a standard position of the magnetic ring. The operation unit adds the angular deflection and the number of rotations and calculates an absolute angular position.Type: ApplicationFiled: November 30, 2012Publication date: August 29, 2013Inventors: TSANN-HUEI CHANG, CHIH-JUNG LIU, CHENG-EN CHIEN
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Patent number: 8063589Abstract: A drive system for multiple motors includes a first motor, a second motor, a motor drive power supply for supplying power to the first and second motors, a first motor drive amplifier, a second motor drive amplifier, a first overcurrent detection apparatus, and a second overcurrent detection apparatus. The first overcurrent detection apparatus is connected between the motor drive power supply and the first motor drive amplifier for detecting current through the first motor drive amplifier, and comparing the current value to the first overcurrent benchmark value to output an overcurrent detection signal correspondingly. The second overcurrent detection apparatus is connected between the motor drive power supply and the second motor drive amplifier for detecting current through the second motor drive amplifier, and comparing the current value to the second overcurrent benchmark value to output an overcurrent detection signal correspondingly.Type: GrantFiled: November 19, 2008Date of Patent: November 22, 2011Assignee: Foxnum Technology Co., Ltd.Inventor: Chih-Jung Liu
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Patent number: 7969114Abstract: A system compatible for different types of signals relates to a motor includes a differential amplifier, a comparator, and a transmitting device. The differential amplifier is configured to receive one of a differential digital pulse signals pair and a differential analog signals pair. The differential digital pulse signals pair is converted to a first digital signal, and the differential analog signals pair is converted to an analog signal by the differential amplifier. The comparator is configured to convert the analog signal into a second digital signal. The first digital signal is received and outputted by the comparator. The transmitting device is configured to convert a data signals pair to a binary code, and convert differential reference digital signals pairs to reference digital signals. The reference digital signals, the first and second digital signals are received by an external computing device.Type: GrantFiled: December 15, 2008Date of Patent: June 28, 2011Assignee: Foxnum Technology Co., Ltd.Inventors: Chih-Jung Liu, Chin-Hsien Ting
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Publication number: 20100248500Abstract: A motor driver includes a circuit board and a connection apparatus. The connection apparatus includes two connection components. Each connection component includes two connection portions and a number of pins. The two connection components are mounted to the circuit board to connect to a positive pole and a negative pole of the circuit board correspondingly via the number of pins. The two connection portions are configured for being connected to wires.Type: ApplicationFiled: April 27, 2009Publication date: September 30, 2010Applicant: FOXNUM TECHNOLOGY CO., LTD.Inventors: CHIN-HSIEN TING, CHIH-JUNG LIU
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Patent number: 7714761Abstract: A voltage error correction system includes a voltage converter, a first and a second analog to digital converters, a subtracter, an adder, and a digital voltage generator. The voltage converter adjusts an input voltage proportionally, adds the adjusted input voltage to a reference voltage to obtain a positive voltage, and outputs the positive voltage. The first analog to digital converter converts the positive voltage into a first digital voltage, the second analog to digital converter converts the reference voltage into a second digital voltage, the subtracter subtracts the second digital voltage from the first digital voltage and outputs a difference voltage, and the adder outputs a corrected voltage by adding the difference voltage of the subtracter to a compensation voltage.Type: GrantFiled: October 13, 2008Date of Patent: May 11, 2010Assignee: Foxnum Technology Co., Ltd.Inventor: Chih-Jung Liu
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Publication number: 20100097024Abstract: A drive system for multiple motors includes a first motor, a second motor, a motor drive power supply for supplying power to the first and second motors, a first motor drive amplifier, a second motor drive amplifier, a first overcurrent detection apparatus, and a second overcurrent detection apparatus. The first overcurrent detection apparatus is connected between the motor drive power supply and the first motor drive amplifier for detecting current through the first motor drive amplifier, and comparing the current value to the first overcurrent benchmark value to output an overcurrent detection signal correspondingly. The second overcurrent detection apparatus is connected between the motor drive power supply and the second motor drive amplifier for detecting current through the second motor drive amplifier, and comparing the current value to the second overcurrent benchmark value to output an overcurrent detection signal correspondingly.Type: ApplicationFiled: November 19, 2008Publication date: April 22, 2010Applicant: FOXNUM TECHNOLOGY CO., LTD.Inventor: CHIH-JUNG LIU
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Publication number: 20100072939Abstract: A system compatible for different types of signals relates to a motor includes a differential amplifier, a comparator, and a transmitting device. The differential amplifier is configured to receive one of a differential digital pulse signals pair and a differential analog signals pair. The differential digital pulse signals pair is converted to a first digital signal, and the differential analog signals pair is converted to an analog signal by the differential amplifier. The comparator is configured to convert the analog signal into a second digital signal. The first digital signal is received and outputted by the comparator. The transmitting device is configured to convert a data signals pair to a binary code, and convert differential reference digital signals pairs to reference digital signals. The reference digital signals, the first and second digital signals are received by an external computing device.Type: ApplicationFiled: December 15, 2008Publication date: March 25, 2010Applicant: FOXNUM TECHNOLOGY CO., LTD.Inventors: CHIH-JUNG LIU, CHIN-HSIEN TING