Patents by Inventor Ching-Fu Cheng
Ching-Fu Cheng 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: 11948881Abstract: A semiconductor structure includes a die, a molding surrounding the die, a first dielectric layer disposed over the die and the molding, and a second dielectric layer disposed between the first dielectric layer and the die, and between the first dielectric layer and the molding. A material content ratio in the first dielectric layer is substantially greater than that in the second dielectric layer. In some embodiments, the material content ratio substantially inversely affects a mechanical strength of the first dielectric layer and the second dielectric layer.Type: GrantFiled: July 8, 2021Date of Patent: April 2, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.Inventors: Hsi-Kuei Cheng, Chih-Kang Han, Ching-Fu Chang, Hsin-Chieh Huang
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Patent number: 10014779Abstract: A power supply device includes a power supply module, a voltage regulator module and an over-voltage protection (OVP) module. The power supply module is utilized to provide a standby voltage signal. The voltage regulator module includes a phase modulator circuit. The phase modulator circuit includes a high-side power transistor, a low-side power transistor and a phase inductor. The OVP module is utilized to transmit the standby voltage signal to the phase modulator circuit and detect a detection potential on the phase modulator circuit. The OVP module selectively conducts the low-side power transistor of the phase modulator circuit according to the detection potential.Type: GrantFiled: December 1, 2016Date of Patent: July 3, 2018Assignee: ASUSTeK COMPUTER INC.Inventors: Hao-Chien Cheng, Ching-Fu Cheng, Hsiao-Wen Chen
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Publication number: 20170179827Abstract: A power supply device includes a power supply module, a voltage regulator module and an over-voltage protection (OVP) module. The power supply module is utilized to provide a standby voltage signal. The voltage regulator module includes a phase modulator circuit. The phase modulator circuit includes a high-side power transistor, a low-side power transistor and a phase inductor. The OVP module is utilized to transmit the standby voltage signal to the phase modulator circuit and detect a detection potential on the phase modulator circuit. The OVP module selectively conducts the low-side power transistor of the phase modulator circuit according to the detection potential.Type: ApplicationFiled: December 1, 2016Publication date: June 22, 2017Inventors: Hao-Chien CHENG, Ching-Fu CHENG, Hsiao-Wen CHEN
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Patent number: 7602156Abstract: A boost converter includes a first boost conversion unit and a second boost conversion unit. Coils of the first boost conversion unit and the second boost conversion unit are coupled with each other. Due to coupling of the coils, the second boost conversion unit releases energy while the first boost conversion unit stores energy in a period of time. Furthermore, due to coupling of the coils, the first boost conversion unit releases energy while the second boost conversion unit stores energy in another period of time. The two boost conversion units operate alternately, thereby adjusting switching loss and averaging output power of components. Furthermore, as switching frequency increases, the coil inductance, as well as the capacitance required in the two boost conversion units can be reduced correspondingly, thus substantially enhancing responses of the two boost conversion units as a whole.Type: GrantFiled: September 22, 2006Date of Patent: October 13, 2009Assignee: ASUSTeK Computer Inc.Inventors: Hsiang-Chung Weng, Ching-Fu Cheng, Hsiang-Jui Hung, Sun-Chen Yang
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Publication number: 20080251125Abstract: A photoelectric conversion structure includes a light energy plate, a thermoelectric cooling element and a control circuit. The light energy plate is suitable to receive light energy and convert the light energy to electrical energy. The thermoelectric cooling element has a hot side and a cold side. The hot side faces the light energy plate. The control circuit is electrically connected to the light energy plate and the thermoelectric cooling element. The control circuit is suitable to provide the electrical energy for the thermoelectric cooling element.Type: ApplicationFiled: April 16, 2008Publication date: October 16, 2008Applicant: ASUSTeK COMPUTER INC.Inventors: Ching-Fu Cheng, Hsiang-Jui Hung, Sun-Chen Yang, Yun-Jiun You, Chun-San Lin
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Publication number: 20080018375Abstract: A level shifter includes a reference voltage level and a voltage dividing circuit. The voltage dividing circuit is connected to the reference voltage level, a first voltage level, and a second voltage level. The second voltage level is between the reference voltage level and the first voltage level.Type: ApplicationFiled: May 24, 2007Publication date: January 24, 2008Inventors: Han-Hsun Chen, Shr-Da Mai, Hsiang-Jui Hung, Ching-Fu Cheng, Sun-Chen Yang
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Publication number: 20070273346Abstract: A voltage regulator circuit with over-current protection, which includes a linear regulator, a voltage controller, and an over-current protection circuit. The linear regulator includes a converter and a driver. The converter is connected to a voltage input terminal and a voltage output terminal. An output terminal of the driver is connected to the converter for controlling the operation of the converter. The voltage controller is connected to the voltage output terminal, the output terminal and a first input terminal of the driver, respectively, for providing a feedback voltage. The over-current protection circuit is connected to the output terminal of the driver and the linear regulator. The over-current protection circuit detects the output voltage of the driver for comparing with a comparison voltage. When the output voltage is larger than the comparison voltage, the over-current protection circuit controls the driver to turn off the converter.Type: ApplicationFiled: August 22, 2006Publication date: November 29, 2007Applicant: ASUSTEK COMPUTER INC.Inventors: Chun-San Lin, Jui-Shun Pan, Hsiang-Jui Hung, Sun-Chen Yang, Ching-Fu Cheng
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Publication number: 20070096700Abstract: A boost converter includes a first boost conversion unit and a second boost conversion unit. Coils of the first boost conversion unit and the second boost conversion unit are coupled with each other. Due to coupling of the coils, the second boost conversion unit releases energy while the first boost conversion unit stores energy in a period of time. Furthermore, due to coupling of the coils, the first boost conversion unit releases energy while the second boost conversion unit stores energy in another period of time. The two boost conversion units operate alternately, thereby adjusting switching loss and averaging output power of components. Furthermore, as switching frequency increases, the coil inductance, as well as the capacitance required in the two boost conversion units can be reduced correspondingly, thus substantially enhancing responses of the two boost conversion units as a whole.Type: ApplicationFiled: September 22, 2006Publication date: May 3, 2007Inventors: Hsiang-Chung Weng, Ching-Fu Cheng, Hsiang-Jui Hung, Sun-Chen Yang
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Publication number: 20050212978Abstract: An electronic device and control method used therein. The electronic device comprises a tuner, a video capture device, and a potential selector. When a first potential is applied with the potential selector, both the tuner and the video capture device are powered by a first power source of the first potential, and, when a second potential is applied with the potential selector, only the video capture device is powered by a second power source of the second potential.Type: ApplicationFiled: August 17, 2004Publication date: September 29, 2005Inventors: Shih-Pin Lo, Ching-Fu Cheng