Patents by Inventor Chin-Hsun Hsu
Chin-Hsun Hsu 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: 11984419Abstract: Package structures and methods for manufacturing the same are provided. The package structure includes a first bump structure formed over a first substrate. The first bump structure includes a first pillar layer formed over the first substrate and a first barrier layer formed over the first pillar layer. In addition, the first barrier layer has a first protruding portion laterally extending outside a first edge of the first pillar layer. The package structure further includes a second bump structure bonded to the first bump structure through a solder joint. In addition, the second bump structure includes a second pillar layer formed over a second substrate and a second barrier layer formed over the second pillar layer. The first protruding portion of the first barrier layer is spaced apart from the solder joint.Type: GrantFiled: July 26, 2022Date of Patent: May 14, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Cheng-Hung Chen, Yu-Nu Hsu, Chun-Chen Liu, Heng-Chi Huang, Chien-Chen Li, Shih-Yen Chen, Cheng-Nan Hsieh, Kuo-Chio Liu, Chen-Shien Chen, Chin-Yu Ku, Te-Hsun Pang, Yuan-Feng Wu, Sen-Chi Chiang
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Patent number: 8610360Abstract: A light-emitting diode (LED) device for preventing soft-start flicker includes an LED module, a voltage converter, a variable current load and a loop control unit. The loop control unit is coupled to the LED module, the voltage converter and the variable current load, and includes a soft-start unit and a dimming control unit. The soft-start unit is utilized for activating a soft-start mechanism of the voltage converter when power of the LED device is turned on. The dimming control unit is utilized for controlling the variable current load to progressively increase a load current of the LED module to a target value and to maintain the load current on the target value until the soft-start mechanism is completed, so as to perform dimming control on the LED module.Type: GrantFiled: December 3, 2009Date of Patent: December 17, 2013Assignee: NOVATEK Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang
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Patent number: 8461883Abstract: A frequency generator is used for generating a frequency within a frequency range. The frequency generator includes a variable current source, a voltage drop generation unit, a voltage source, a detection unit, a conversion unit, and an oscillating circuit. The variable current source is used for outputting a current according to a control signal. The voltage drop generation unit is used for generating a voltage drop according to the current. The voltage source is used for outputting a voltage range. The detection unit is used for outputting the control signal to the variable current source according to a relationship between the voltage drop and the voltage range. The conversion unit is used for outputting a digital code according to the relationship between the voltage drop and the voltage range. The oscillator circuit is used for generating the frequency according to the digital code.Type: GrantFiled: May 5, 2010Date of Patent: June 11, 2013Assignee: Novatek Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang
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Patent number: 8427081Abstract: A driving method of a light-emitting diode (LED) adapted to a driving apparatus is provided. The driving method includes detecting whether the driving apparatus performs dimming, and if the driving apparatus performs dimming, determining whether a predetermined requirement for dimming control is met or not. When the predetermined requirement for dimming control is not met, respective current magnitudes of a plurality of driving currents are regulated, and each of the driving currents is output for a full time of a period. Conversely, when the predetermined requirement for dimming control is met, each of the driving currents is output for a partial time of a period.Type: GrantFiled: July 23, 2012Date of Patent: April 23, 2013Assignee: Novatek Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Patent number: 8344661Abstract: An LED device with simultaneous open and short detection function includes a plurality of LED strings, a voltage converter, a current driving unit, a loop control unit, an open detector, a short detector and a voltage detector. The open detector and the short detector are utilized for detecting LED open and LED short for the plurality of LED strings, respectively. The voltage detector is coupled to the open detector, the short detector and the voltage converter, and is utilized for generating a reset signal to the short detector according to an output voltage of the voltage converter when the LED open occurs on the plurality of LED strings, so as to initiate the LED short detection for the plurality of LED strings again.Type: GrantFiled: December 24, 2009Date of Patent: January 1, 2013Assignee: NOVATEK Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Publication number: 20120286677Abstract: A driving method of a light-emitting diode (LED) adapted to a driving apparatus is provided. The driving method includes detecting whether the driving apparatus performs dimming, and if the driving apparatus performs dimming, determining whether a predetermined requirement for dimming control is met or not. When the predetermined requirement for dimming control is not met, respective current magnitudes of a plurality of driving currents are regulated, and each of the driving currents is output for a full time of a period. Conversely, when the predetermined requirement for dimming control is met, each of the driving currents is output for a partial time of a period.Type: ApplicationFiled: July 23, 2012Publication date: November 15, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Patent number: 8288969Abstract: A driving method of a light-emitting diode (LED) adapted to a driving apparatus is provided. The driving method includes receiving a dimming signal, detecting whether the driving apparatus performs dimming, and if the driving apparatus performs dimming, determining whether a duty cycle of the dimming signal is smaller than a predetermined value. When the duty cycle of the dimming signal is not smaller than the predetermined value, respective current magnitudes of a plurality of driving currents are regulated according to the dimming signal, and each of the driving currents is output for a full time of a period. Conversely, when the duty cycle of the dimming signal is smaller than the predetermined value, each of the driving currents is output for a partial time of a period. A driving apparatus employing the driving method is also provided.Type: GrantFiled: February 10, 2012Date of Patent: October 16, 2012Assignee: Novatek Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Publication number: 20120139434Abstract: A driving method of a light-emitting diode (LED) adapted to a driving apparatus is provided. The driving method includes receiving a dimming signal, detecting whether the driving apparatus performs dimming, and if the driving apparatus performs dimming, determining whether a duty cycle of the dimming signal is smaller than a predetermined value. When the duty cycle of the dimming signal is not smaller than the predetermined value, respective current magnitudes of a plurality of driving currents are regulated according to the dimming signal, and each of the driving currents is output for a full time of a period. Conversely, when the duty cycle of the dimming signal is smaller than the predetermined value, each of the driving currents is output for a partial time of a period. A driving apparatus employing the driving method is also provided.Type: ApplicationFiled: February 10, 2012Publication date: June 7, 2012Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Patent number: 8169156Abstract: A control method capable of preventing flicker effect for a light source module includes detecting variation situations of a driving current passing through the light source module to generate a current detection signal, adjusting a variable reference voltage according to the current detection signal, obtaining a feedback voltage from the light source module, generating a voltage control signal according to the feedback voltage and the variable reference voltage, and generating an output voltage according to the voltage control signal to drive the light source module.Type: GrantFiled: November 25, 2009Date of Patent: May 1, 2012Assignee: NOVATEK Microelectronics Corp.Inventors: Kuo-Ching Hsu, Tsung-Hau Chang, Chin-Hsun Hsu
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Patent number: 8154223Abstract: A driving apparatus of a light emitting diode (LED) and a driving method thereof are provided. In the driving method, when the driving apparatus performs dimming and a duty cycle of a dimming signal is smaller than a predetermination value, outputting time of driving currents are equally allotted in a period, and a magnitude of each driving current is regulated correspondingly. When the driving apparatus performs dimming and the duty cycle of the dimming signal is equal to or greater than the predetermination value, the driving currents are simultaneously output in the period, and the magnitude of each driving current is regulated according to the dimming signal. Therefore, an audio noise and an electromagnetic interference caused by excessive variation of a sum of the driving currents are suppressed.Type: GrantFiled: December 1, 2009Date of Patent: April 10, 2012Assignee: Novatek Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Patent number: 8134304Abstract: A light source driving device for driving a light emitting component is disclosed. The light source driving device includes a voltage converter coupled to the light emitting component for converting an input voltage into an output driving voltage according to a voltage control signal, a dimming unit coupled to the light emitting component for implementing a dimming process according to a dimming signal, a current source coupled to the dimming unit for providing a driving current to drive the light emitting component, and a control unit coupled to the dimming unit and the voltage converter for detecting a dimming state to generate a dimming detection signal and generating a reference voltage according to the dimming detection signal, wherein the control unit controls the voltage converter to generate the output driving voltage so as to driving the light emitting component.Type: GrantFiled: December 2, 2009Date of Patent: March 13, 2012Assignee: NOVATEK Microelectronics Corp.Inventors: Kuo-Ching Hsu, Tsung-Hau Chang, Chin-Hsun Hsu
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Patent number: 8030904Abstract: An oscillator circuit including a charge/discharge unit, a capacitance amplifier, and a level detection circuit is provided. The charge/discharge unit is used to receive a control signal, and perform a charge or discharge operation on a charge/discharge terminal according to the control signal. The capacitance amplifier, including a first impedance, a second impedance, a voltage follower, and a capacitor, is capable of providing an equivalent capacitance with amplifying characteristics. An input terminal of the level detection circuit is electrically connected to the charge/discharge terminal of the charge/discharge unit, and the level detection circuit generates the control signal to the charge/discharge unit according to the charge/discharge terminal of the charge/discharge unit. The oscillator circuit of the present invention may use a capacitance with a smaller level to provide an equivalent capacitance with amplifying characteristics, and thus achieve an oscillator function.Type: GrantFiled: March 11, 2009Date of Patent: October 4, 2011Assignee: Novatek Microelectronics Corp.Inventors: Tsung-Hau Chang, Chin-Hsun Hsu
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Publication number: 20110074468Abstract: A frequency generator is used for generating a frequency within a frequency range. The frequency generator includes a variable current source, a voltage drop generation unit, a voltage source, a detection unit, a conversion unit, and an oscillating circuit. The variable current source is used for outputting a current according to a control signal. The voltage drop generation unit is used for generating a voltage drop according to the current. The voltage source is used for outputting a voltage range. The detection unit is used for outputting the control signal to the variable current source according to a relationship between the voltage drop and the voltage range. The conversion unit is used for outputting a digital code according to the relationship between the voltage drop and the voltage range. The oscillator circuit is used for generating the frequency according to the digital code.Type: ApplicationFiled: May 5, 2010Publication date: March 31, 2011Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang
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Publication number: 20110062887Abstract: A driving apparatus of a light emitting diode (LED) and a driving method thereof are provided. In the driving method, when the driving apparatus performs dimming and a duty cycle of a dimming signal is smaller than a predetermination value, outputting time of driving currents are equally allotted in a period, and a magnitude of each driving current is regulated correspondingly. When the driving apparatus performs dimming and the duty cycle of the dimming signal is equal to or greater than the predetermination value, the driving currents are simultaneously output in the period, and the magnitude of each driving current is regulated according to the dimming signal. Therefore, an audio noise and an electromagnetic interference caused by excessive variation of a sum of the driving currents are suppressed.Type: ApplicationFiled: December 1, 2009Publication date: March 17, 2011Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Publication number: 20110043114Abstract: An LED device with simultaneous open and short detection function includes a plurality of LED strings, a voltage converter, a current driving unit, a loop control unit, an open detector, a short detector and a voltage detector. The open detector and the short detector are utilized for detecting LED open and LED short for the plurality of LED strings, respectively. The voltage detector is coupled to the open detector, the short detector and the voltage converter, and is utilized for generating a reset signal to the short detector according to an output voltage of the voltage converter when the LED open occurs on the plurality of LED strings, so as to initiate the LED short detection for the plurality of LED strings again.Type: ApplicationFiled: December 24, 2009Publication date: February 24, 2011Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao
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Publication number: 20110043138Abstract: A light-emitting diode (LED) device capable of dynamically regulating output voltage is disclosed. The LED device includes a plurality of LED chains, a voltage converter, a current driving unit, a loop control unit. The loop control unit is coupled to the LED chains and the voltage converter, and includes a voltage selection unit, an error amplifier, and a conversion controller. The voltage selection unit is utilized for generating a plurality of candidate voltages according to a threshold voltage and a plurality of headroom voltage voltages corresponding to the LED chains and the current driving unit, and selecting a feedback voltage from the candidate voltages. The error amplifier generates an error voltage signal according to a reference voltage and the feedback voltage. The conversion controller generates a voltage control signal according to the error voltage signal to control the voltage conversion of the voltage converter.Type: ApplicationFiled: December 24, 2009Publication date: February 24, 2011Inventors: Kuo-Ching Hsu, Tsung-Hau Chang, Chin-Hsun Hsu, Ting-Wei Liao
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Publication number: 20110037410Abstract: A control method capable of preventing flicker effect for a light source module includes detecting variation situations of a driving current passing through the light source module to generate a current detection signal, adjusting a variable reference voltage according to the current detection signal, obtaining a feedback voltage from the light source module, generating a voltage control signal according to the feedback voltage and the variable reference voltage, and generating an output voltage according to the voltage control signal to drive the light source module.Type: ApplicationFiled: November 25, 2009Publication date: February 17, 2011Inventors: Kuo-Ching Hsu, Tsung-Hau Chang, Chin-Hsun Hsu
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Publication number: 20110037396Abstract: A light emitting diode module having a plurality of LED strings is provided. The light emitting diode module includes a voltage generating loop, a light tuner, a voltage selector, and a voltage storage and comparison circuit. The voltage generating loop generates a system voltage according to a pulse modulation control signal. The light tuner receives a light tuning signal and turns on or off the LED strings accordingly. The voltage selector selects one of terminal voltages of terminals of the LED strings coupled to the light tuner for generating a selection voltage. The voltage storage and comparison circuit generates an error voltage by comparing the selection voltage and a reference voltage. The voltage storage and comparison circuit stores the error voltage temporarily and provides the temporarily stored error voltage as the pulse modulation control signal.Type: ApplicationFiled: October 21, 2009Publication date: February 17, 2011Applicant: NOVATEK MICROELECTRONICS CORP.Inventors: Feng-Wei Chien, Tsung-Hau Chang, Chin-Hsun Hsu, Kuo-Ching Hsu
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Publication number: 20110018450Abstract: A light source driving device for driving a light emitting component is disclosed. The light source driving device includes a voltage converter coupled to the light emitting component for converting an input voltage into an output driving voltage according to a voltage control signal, a dimming unit coupled to the light emitting component for implementing a dimming process according to a dimming signal, a current source coupled to the dimming unit for providing a driving current to drive the light emitting component, and a control unit coupled to the dimming unit and the voltage converter for detecting a dimming state to generate a dimming detection signal and generating a reference voltage according to the dimming detection signal, wherein the control unit controls the voltage converter to generate the output driving voltage so as to driving the light emitting component.Type: ApplicationFiled: December 2, 2009Publication date: January 27, 2011Inventors: Kuo-Ching Hsu, Tsung-Hau Chang, Chin-Hsun Hsu
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Patent number: RE46330Abstract: A driving method of a light-emitting diode (LED) adapted to a driving apparatus is provided. The driving method includes detecting whether the driving apparatus performs dimming, and if the driving apparatus performs dimming, determining whether a predetermined requirement for dimming control is met or not. When the predetermined requirement for dimming control is not met, respective current magnitudes of a plurality of driving currents are regulated, and each of the driving currents is output for a full time of a period. Conversely, when the predetermined requirement for dimming control is met, each of the driving currents is output for a partial time of a period.Type: GrantFiled: April 23, 2015Date of Patent: February 28, 2017Assignee: Novatek Microelectronics Corp.Inventors: Kuo-Ching Hsu, Chin-Hsun Hsu, Tsung-Hau Chang, Ting-Wei Liao