Patents by Inventor Yi-Chiang Lai
Yi-Chiang Lai 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: 9886892Abstract: The present disclosure provides a gate driving circuit, a gate driving method, and a display apparatus. The gate driving circuit comprises a driving control unit and a gate signal generation unit, wherein the driving control unit is configured to generate a driving control signal corresponding to a respective display pattern, and the gate signal generation unit is connected to the driving control unit and is configured to generate a multi-order gate voltage in response to the driving control signal generated by the driving control unit, wherein duration of a low order voltage included in the generated multi-order gate voltage corresponds to the respective display pattern. The gate driving circuit according to the present disclosure can achieve driving for display by using a multi-order gate voltage having a low order voltage in long duration when the corresponding display apparatus is in a flicker pattern, so as to eliminate image flicker.Type: GrantFiled: April 16, 2015Date of Patent: February 6, 2018Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Chunbing Zhang, Yi-Chiang Lai, Liang Zhang
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Publication number: 20160351113Abstract: The present disclosure provides a gate driving circuit, a gate driving method, and a display apparatus. The gate driving circuit comprises a driving control unit and a gate signal generation unit, wherein the driving control unit is configured to generate a driving control signal corresponding to a respective display pattern, and the gate signal generation unit is connected to the driving control unit and is configured to generate a multi-order gate voltage in response to the driving control signal generated by the driving control unit, wherein duration of a low order voltage included in the generated multi-order gate voltage corresponds to the respective display pattern. The gate driving circuit according to the present disclosure can achieve driving for display by using a multi-order gate voltage having a low order voltage in long duration when the corresponding display apparatus is in a flicker pattern, so as to eliminate image flicker.Type: ApplicationFiled: April 16, 2015Publication date: December 1, 2016Inventors: Chunbing Zhang, Yi-Chiang Lai, Liang Zhang
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Patent number: 8988339Abstract: A stereoscopic image displaying system and method are disclosed. The system comprises a display panel for periodically displaying a left-eye image and a right-eye image; a backlight plate that is divided into a plurality of regional light sources from top to bottom; a backlight controller for providing control signals to turn on the regional light sources, wherein in one image frame displaying period, the time points for turning on the respective regional light sources are different from each other, and turn-on durations are different from each other as well; and a pair of shutter glasses comprising a left-piece eyeglass and a right-piece eyeglass that are periodically and alternatively turned on and of for respectively receiving the left-eye image and the right-eye image. The stereoscopic display system can improve brightness performance of a liquid crystal display panel during displaying stereoscopic images, also minimize the occurrence of ghost images and crosstalk.Type: GrantFiled: April 5, 2012Date of Patent: March 24, 2015Assignee: Chunghwa Picture Tubes Ltd.Inventors: Hung-chun Li, Yi-chiang Lai, Chun-chieh Chiu
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Patent number: 8847869Abstract: A liquid crystal display device and a method for driving the same are disclosed. The liquid crystal display device includes a liquid crystal panel, a gate driver unit, a clock generator, and a temperature compensation unit. The liquid crystal panel includes a pixel array. The gate driver unit is utilized for generating a plurality of driving signals to drive the pixel unit. The clock generator is electrically coupled to the gate driver unit. The temperature compensation unit is electrically coupled to the gate driver unit and the clock generator. The temperature compensation unit is utilized for adjusting an output of the clock generator to compensate the driving signals of the gate driver unit according to a temperature variance.Type: GrantFiled: December 30, 2010Date of Patent: September 30, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chun-cheng Hou, Yi-chiang Lai, Min-wei Tsai
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Patent number: 8810614Abstract: A 3D displaying device includes a first panel, a second panel and a backlight unit. The first panel includes a first liquid crystal layer for providing a left-eye image and a right-eye image. The second panel includes a first driving electrode substrate, a second driving electrode substrate and a second liquid crystal layer disposed between the first driving electrode substrate and the second driving electrode substrate, whereby light passing therethrough to generate polarization of a first angle or a second angle, wherein the second panel includes at least three sub-panel units. The backlight unit is disposed below the first panel and includes at least three light-emitting areas respectively corresponding to the at least three sub-panel units for providing a light source to the first panel and the second panel.Type: GrantFiled: April 18, 2012Date of Patent: August 19, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Hung-Chun Li, Yi-Chiang Lai, Bo-Wei Lan
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Publication number: 20130194520Abstract: A stereoscopic image displaying system and method are disclosed. The system comprises a display panel for periodically displaying a left-eye image and a right-eye image; a backlight plate that is divided into a plurality of regional light sources from top to bottom; a backlight controller for providing control signals to turn on the regional light sources, wherein in one image frame displaying period, the time points for turning on the respective regional light sources are different from each other, and turn-on durations are different from each other as well; and a pair of shutter glasses comprising a left-piece eyeglass and a right-piece eyeglass that are periodically and alternatively turned on and of for respectively receiving the left-eye image and the right-eye image. The stereoscopic display system can improve brightness performance of a liquid crystal display panel during displaying stereoscopic images, also minimize the occurrence of ghost images and crosstalk.Type: ApplicationFiled: April 5, 2012Publication date: August 1, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Hung-chun LI, Yi-chiang LAI, Chun-chieh CHIU
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Publication number: 20130106926Abstract: A 3D displaying device includes a first panel, a second panel and a backlight unit. The first panel includes a first liquid crystal layer for providing a left-eye image and a right-eye image. The second panel includes a first driving electrode substrate, a second driving electrode substrate and a second liquid crystal layer disposed between the first driving electrode substrate and the second driving electrode substrate, whereby light passing therethrough to generate polarization of a first angle or a second angle, wherein the second panel includes at least three sub-panel units. The backlight unit is disposed below the first panel and includes at least three light-emitting areas respectively corresponding to the at least three sub-panel units for providing a light source to the first panel and the second panel.Type: ApplicationFiled: April 18, 2012Publication date: May 2, 2013Inventors: Hung-Chun LI, Yi-Chiang LAI, Bo-Wei LAN
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Publication number: 20120223927Abstract: A liquid crystal display device and a method for driving the same are disclosed. The liquid crystal display device includes a liquid crystal panel and a driving circuit. The driving circuit includes a timing controller, a detection unit, a level shift circuit, a gate driver unit, and at least one source driver unit. The timing controller receives a frame rate and provides at least one gate turn-on signal and a source data writing signal for each of at least two different frame rates. The detecting unit detects the frame rate. The timing controller adjusts a duty cycle of the source data writing signal, so that the charge time is maintained to be substantially constant for any one of the different frame rates. Accordingly, a problem of flickering phenomenon can be avoided.Type: ApplicationFiled: May 12, 2011Publication date: September 6, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Tsan-ming Hsieh, Yi-chiang Lai
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Publication number: 20120098815Abstract: A liquid crystal display device and a method for driving the same are disclosed. The liquid crystal display device includes a liquid crystal panel, a gate driver unit, a clock generator, and a temperature compensation unit. The liquid crystal panel includes a pixel array. The gate driver unit is utilized for generating a plurality of driving signals to drive the pixel unit. The clock generator is electrically coupled to the gate driver unit. The temperature compensation unit is electrically coupled to the gate driver unit and the clock generator. The temperature compensation unit is utilized for adjusting an output of the clock generator to compensate the driving signals of the gate driver unit according to a temperature variance.Type: ApplicationFiled: December 30, 2010Publication date: April 26, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: CHUN-CHENG HOU, Yi-chiang Lai, Min-wei Tsai
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Publication number: 20120098814Abstract: A liquid crystal display device and a method for driving the same are disclosed. The liquid crystal display device includes a liquid crystal panel, a gate driver unit, a clock generator, and a temperature compensation unit. The liquid crystal panel includes a pixel array. The gate driver unit is utilized for generating a plurality of driving signals to drive the pixel unit. The clock generator is electrically coupled to the gate driver unit. The temperature compensation unit is electrically coupled to the gate driver unit and the clock generator. The temperature compensation unit is utilized for adjusting an output of the clock generator to compensate the driving signals of the gate driver unit according to a temperature variance.Type: ApplicationFiled: December 30, 2010Publication date: April 26, 2012Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: CHUN-CHENG HOU, Yi-chiang Lai, Min-wei Tsai
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Publication number: 20110050554Abstract: A display device includes a panel, a receiving interface, a timing control module, a backlight module and a backlight driving unit. The receiving interface receives a first data signal and a first backlight control signal with a first timing. The timing control module converts the first data signal into a second data signal and then outputs the second data signal to the panel. Furthermore, based on the second data signal, the timing control module converts the first backlight control signal into a second backlight control signal with a second timing different from the first timing and then outputs the second backlight control signal. After receiving the second backlight control signal from the timing control module, the backlight driving unit is controlled by the second backlight control signal to output an output voltage signal to the backlight module.Type: ApplicationFiled: October 12, 2009Publication date: March 3, 2011Inventors: Chun-Chieh Yu, Yi-Chiang Lai
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Publication number: 20060284663Abstract: A timing control circuit and a timing control method are provided. The circuit and method is for outputting a plurality of latch pulses in a TFT-LCD to avoid a rewriting phenomenon. The timing control circuit is characterized in that among the latch pulses, except for the first latch pulse, each latch pulse synchronizes with or follows behind a previous latch pulse corresponding thereto, and at least one latch pulse falls behind a previous latch pulse corresponding thereto.Type: ApplicationFiled: June 15, 2005Publication date: December 21, 2006Inventors: Chien-Hung Lu, Yi-Chiang Lai, Ho-Ming Su