Patents by Inventor Hung-Min Shih
Hung-Min Shih 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: 20140104260Abstract: A driving device is configured for driving a display panel and includes a data driver, a plurality of switches, and an image determiner. The switch is electrically coupled between data lines of a first data line group. The data driver is configured to output data signals to the data lines of the first data line group. The data signals transferred by the data lines of the first data line group include a plurality of pulse transitions while the display panel displays an image. The image determiner is configured to determine the image displayed by the display panel and output a driving signal based on a determined result for activating a corresponding switch such that the data lines of the first data line group can perform charge sharing therebetween. Furthermore, a method for driving a display panel is disclosed herein.Type: ApplicationFiled: March 15, 2013Publication date: April 17, 2014Applicant: AU OPTRONICS CORPORATIONInventors: Meng-Sheng CHANG, Shih-Chieh KUO, Hung-Min SHIH
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Patent number: 8232945Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.Type: GrantFiled: February 10, 2012Date of Patent: July 31, 2012Assignee: AU Optronics Corp.Inventors: Hung-Min Shih, Chung-Kuang Tsai
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Publication number: 20120139971Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.Type: ApplicationFiled: February 10, 2012Publication date: June 7, 2012Applicant: AU OPTRONICS CORP.Inventors: Hung-Min Shih, Chung-Kuang Tsai
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Patent number: 8154528Abstract: A matrix sensing apparatus with architecture having reduced quantity of required sensing lines is disclosed. The matrix sensing apparatus includes a plurality of driving lines, a plurality of sensing lines and a matrix sensing region. The matrix sensing region includes a plurality of sensing areas. Each sensing area includes a first transistor, a second transistor, and a sensing unit for generating a sensing signal. The first transistor is coupled to the sensing unit and a corresponding sensing line. The second transistor is coupled to the first transistor, a first corresponding driving line and a second corresponding driving line. The first transistor together with the second transistor functions to control the signal connection between the sensing unit and the corresponding sensing line based on the driving signals of the first and second corresponding driving lines.Type: GrantFiled: February 3, 2009Date of Patent: April 10, 2012Assignee: AU Optronics Corp.Inventors: Wu-Min Chen, Chih-Lin Liao, Hung-Min Shih
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Patent number: 8139010Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.Type: GrantFiled: November 18, 2005Date of Patent: March 20, 2012Assignee: AU Optronics Corp.Inventors: Hung-Min Shih, Chung-Kuang Tsai
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Patent number: 7764024Abstract: A light module includes a plurality of light sources for generating light, a power controller, a bridge converter, a first piezoelectric transformer, a second piezoelectric transformer, a resonance balance circuit, and a protection circuit. The power controller is used for generating a power driving signal based on a control signal. The bridge converter is used for generating a supply voltage signal based on the power driving signal. The first piezoelectric transformer is used for transforming the supply voltage signal into a first driving voltage signal to a first end of each of the plurality of lamps. The second piezoelectric transformer is used for transforming the supply voltage signal into a second driving voltage signal to a second end of each of the plurality of lamps.Type: GrantFiled: May 2, 2007Date of Patent: July 27, 2010Assignee: AU Optronics Corp.Inventors: Yung-tse Cheng, Chih-wei Wang, Hung-min Shih, Tsung-shiun Lee
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Patent number: 7746330Abstract: A circuit and method of reducing noises for improving quality of display in a liquid crystal display (LCD) system. The LCD system includes an LCD panel and at least one lamp. In operation the LCD system is supplied with a vertical synchronization signal and a horizontal synchronization signal. In one embodiment, the method comprises the steps of determining a lamp driving frequency for the at least one lamp responsive to the horizontal synchronization signal, and generating a lamp driving signal with the lamp driving frequency to be received by the at least one lamp for producing light, wherein the following formulae (1) and (2) are satisfied: f lamp = 2 ? n - 1 m ? H sync + ? ( 1 ) and ? ? H sync / m ? ? ? 0 ( 2 ) where Hsync is the frequency of the horizontal synchronization signal in unit of (Hz); flamp is the lamp driving frequency for the lamp driving signal in unit of (Hz); m, n=1, 2, 3, . . .Type: GrantFiled: December 22, 2005Date of Patent: June 29, 2010Assignee: Au Optronics CorporationInventors: Chia-Wei Yu, Hung-Min Shih
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Patent number: 7714517Abstract: A backlight system for use in an LCD display with a driver providing current sink control includes an LED array module, a current feedback circuit, and a current compensation circuit. The LED array module has N columns of LEDs and each LED column has M LEDs connected in serial, wherein the current feedback circuit includes N current feedback units and the current compensation circuit includes N current compensation units, both of the current feedback circuit and the current compensation circuit being electrically coupled to the LED array module. When the backlight system is in operation, a current passes through an LED column, a current feedback unit, and a current compensation unit to generate an output voltage that is used for comparison with a predetermined DC voltage, and the current is compensated based on the results of the comparison.Type: GrantFiled: April 19, 2007Date of Patent: May 11, 2010Assignee: AU Optronics CorporationInventors: Hung-Min Shih, Tsung-Shiun Lee, Chia-Hung Sun, Huang-De Lin
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Publication number: 20100045631Abstract: A matrix sensing apparatus with architecture having reduced quantity of required sensing lines is disclosed. The matrix sensing apparatus includes a plurality of driving lines, a plurality of sensing lines and a matrix sensing region. The matrix sensing region includes a plurality of sensing areas. Each sensing area includes a first transistor, a second transistor, and a sensing unit for generating a sensing signal. The first transistor is coupled to the sensing unit and a corresponding sensing line. The second transistor is coupled to the first transistor, a first corresponding driving line and a second corresponding driving line. The first transistor together with the second transistor functions to control the signal connection between the sensing unit and the corresponding sensing line based on the driving signals of the first and second corresponding driving lines.Type: ApplicationFiled: February 3, 2009Publication date: February 25, 2010Inventors: Wu-Min Chen, Chih-Lin Liao, Hung-Min Shih
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Patent number: 7548249Abstract: A method of dynamic frame presentation improvement for liquid crystal display is disclosed. The method comprises the step of providing a gray level mapping table, which maps the signal gray levels from 0 to N into mapped gray levels from 1 to N?1 level. Thereafter, the mapped data is fed into over-voltage compensation circuit. The over-voltage compensation circuit then implements process of the gray level ascending or gray level descending while the previous frame turns into current frame with a varied gray level.Type: GrantFiled: August 11, 2004Date of Patent: June 16, 2009Assignee: Au Optronics Corp.Inventors: Chung-Kuang Tsai, Li-Ru Lyu, Hung-Min Shih, Yung-Zhi Wu, Ya-Fang Chen
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Publication number: 20090147029Abstract: A multi-frame overdriving circuit for use in a liquid crystal display including a counting unit and a multi-frame overdriving unit is provided. The counting unit counts a number m of frame periods for which a pixel data corresponding to a pixel keeps a first gray value, wherein m is a positive integer. When the pixel data changes to a second gray value from the first gray value in a first frame period, the multi-frame overdriving unit respectively outputs y multi-frame overdriving pixel data corresponding to the pixel within successive y frame periods starting from the first frame period. The y multi-frame overdriving pixel data are related to the first gray value, the second gray value and the number m of frame periods, wherein y is a positive integer.Type: ApplicationFiled: March 31, 2008Publication date: June 11, 2009Applicant: AU OPTRONICS CORP.Inventors: Ming-Chi Hung, Chih-Lin Liao, Hung-Min Shih
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Publication number: 20080258636Abstract: A backlight system for use in an LCD display with a driver providing current sink control includes an LED array module, a current feedback circuit, and a current compensation circuit. The LED array module has N columns of LEDs and each LED column has M LEDs connected in serial, wherein the current feedback circuit includes N current feedback units and the current compensation circuit includes N current compensation units, both of the current feedback circuit and the current compensation circuit being electrically coupled to the LED array module. When the backlight system is in operation, a current passes through an LED column, a current feedback unit, and a current compensation unit to generate an output voltage that is used for comparison with a predetermined DC voltage, and the current is compensated based on the results of the comparison.Type: ApplicationFiled: April 19, 2007Publication date: October 23, 2008Applicant: AU Optronics CorporationInventors: Hung-Min SHIH, Tsung-Shiun Lee, Chia-Hung Sun, Huang-De Lin
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Publication number: 20080172570Abstract: A data line repair mechanism for a display including a data driver, a plurality of data lines, at least one rescue line is disclosed, wherein each data line includes a second end and a first end coupled to the data driver, the rescue line is coupled to the data driver, and when a first data line fails, the rescue line is coupled to the second end of the first data line via a single one weld point. The mechanism includes an address storage unit storing the addresses of the first data line and rescue line, and a data processor receiving an input data to output an output data to the data driver, wherein the input data includes a first display data corresponding to the first data line, and the first display data is transmitted to the rescue line based on the addresses of the first data line and rescue line.Type: ApplicationFiled: November 20, 2007Publication date: July 17, 2008Applicant: AU OPTRONICS CORP.Inventors: Chih-Che Hsu, Hung-Min Shih
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Publication number: 20080067949Abstract: A light module includes a plurality of light sources for generating light, a power controller, a bridge converter, a first piezoelectric transformer, a second piezoelectric transformer, a resonance balance circuit, and a protection circuit. The power controller is used for generating a power driving signal based on a control signal. The bridge converter is used for generating a supply voltage signal based on the power driving signal. The first piezoelectric transformer is used for transforming the supply voltage signal into a first driving voltage signal to a first end of each of the plurality of lamps. The second piezoelectric transformer is used for transforming the supply voltage signal into a second driving voltage signal to a second end of each of the plurality of lamps.Type: ApplicationFiled: May 2, 2007Publication date: March 20, 2008Applicant: AU Optronics Corp.Inventors: Yung-tse Cheng, Chih-wei Wang, Hung-min Shih, Tsung-shiun Lee
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Patent number: 7292211Abstract: A driving circuit for a liquid crystal display. The liquid crystal display panel includes a plurality of light emitting elements and display cells. The display cells are respectively connected to a plurality of data electrodes and gate electrodes. A gate driver outputs scan signals to the gate electrodes. A data driver outputs the video signals to the data electrodes according to the image control signal, and a voltage controlling signal corresponding to a brightness adjustment signal. A driving voltage generator outputs a driving voltage to the light emitting elements according to the voltage controlling signal.Type: GrantFiled: March 10, 2004Date of Patent: November 6, 2007Assignee: Au Optronics Corp.Inventors: Zuei-Tien Chao, Hung-Min Shih
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Publication number: 20070229552Abstract: A color compensation method for a display is disclosed. The display includes a display module for receiving a plurality of original pixel data. The method includes calculating power-on time duration of the display module; and adjusting gray levels of the original pixel data according to the power-on time duration.Type: ApplicationFiled: May 30, 2007Publication date: October 4, 2007Applicant: AU OPTRONICS CORP.Inventors: Hung-Min Shih, Chung-Kuang Tsai, Kun-Hung Hsieh, Chih-Wei Chen, Chung-Lung Li
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Publication number: 20070146295Abstract: A circuit and method of reducing noises for improving quality of display in a liquid crystal display (LCD) system. The LCD system includes an LCD panel and at least one lamp. In operation the LCD system is supplied with a vertical synchronization signal and a horizontal synchronization signal. In one embodiment, the method comprises the steps of determining a lamp driving frequency for the at least one lamp responsive to the horizontal synchronization signal, and generating a lamp driving signal with the lamp driving frequency to be received by the at least one lamp for producing light, wherein the following formulae (1) and (2) are satisfied: f lamp = 2 ? n - 1 m ? H sync + ? ( 1 ) and ? ? ? H sync / m ? ? ? 0 ( 2 ) where Hsync is the frequency of the horizontal synchronization signal in unit of (Hz); flamp is the lamp driving frequency for the lamp driving signal in unit of (Hz); m, n=1, 2, 3, . . .Type: ApplicationFiled: December 22, 2005Publication date: June 28, 2007Applicant: AU Optronics CorporationInventors: Chia-Wei Yu, Hung-Min Shih
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Patent number: 7134779Abstract: A light-emitting element circuit. The light-emitting element circuit disposed on a FPC includes a plurality of light-emitting element sub-circuits arranged in parallel in the FPC. Each light-emitting element sub-circuit includes at least one first light-emitting element disposed on a first region of the FPC, and at least one second light-emitting element disposed on a second region of the FPC. The number of the second light-emitting elements is equal to the number of the first light-emitting elements. A current is inputted to the first region, flowing through the first light-emitting elements and the second light-emitting elements sequentially, and is outputted from the second region.Type: GrantFiled: December 9, 2003Date of Patent: November 14, 2006Assignee: AU Optronics Corp.Inventors: Hsien-Ying Chou, Hung-Min Shih
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Publication number: 20060214895Abstract: A gamma voltage generator can control brightness of a first color pixel unit and a second color pixel unit. A first potential divider is coupled between a first node and a second node for generating a first main gamma voltage. At least one second potential divider is coupled between the second node and a third node for generating a first sub-gamma voltage and a second sub-gamma voltage. The brightness of the first color pixel unit is controlled by the first main gamma voltage and the first sub-gamma voltage. The brightness of the second color pixel unit is controlled by the first main gamma voltage and the second sub-gamma voltage.Type: ApplicationFiled: November 18, 2005Publication date: September 28, 2006Inventors: Hung-Min Shih, Chung-Kuang Tsai
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Publication number: 20060114270Abstract: A spontaneously color compensating control apparatus is provided for performing spontaneous color compensation on the original pixel data and outputting compensated pixel data to a display module accordingly. The control apparatus includes a timer and a timing controller. The timer is used for providing the using time of the display module and the timing controller is used to receive the original pixel data and output the compensated pixel data. The timing controller adjusts the gray levels of the original pixel data to output the compensated pixel data according to the using time of the display module.Type: ApplicationFiled: May 26, 2005Publication date: June 1, 2006Inventors: Hung-Min Shih, Chung-Kuang Tsai