Patents by Inventor Ya-Hsiang Tai

Ya-Hsiang Tai 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).

  • Patent number: 7248326
    Abstract: A liquid crystal display (LCD) and fabricating method thereof. The LCD includes a first substrate, provided with a plurality of parallel gate lines and a plurality of parallel signal lines, wherein the gate lines and signal lines are perpendicular, and a pixel area is defined by two adjacent gate lines and two adjacent signal lines. A source electrode, electrically connected to one of the adjacent signal lines, and a drain electrode are formed on the pixel area. A first pixel electrode is formed, electrically connected to the drain electrode, on the pixel area. A second substrate is provided a predetermined distance above the first substrate, having a plurality of color-filtering areas, directly above the respective pixel area. A second pixel electrode layer is formed on the second substrate, wherein the part thereof directly above the signal lines is relatively thin.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: July 24, 2007
    Inventors: Jun Chang Chen, Ya-Hsiang Tai
  • Publication number: 20070159442
    Abstract: An analog output buffer circuit for a flat panel display is provided for improving an output signal distortion. The circuit includes a transistor, a current source, an input capacitor, an upper switch, a lower switch, a first switch, a second switch and a third switch. In which, the transistor and the current source are electrically connected in series between a first power supply and a second power supply. The current source provides a compensatory current for the transistor when a leakage current occurs. The upper switch and the first switch are turned on during the first period, and the lower switch and the second switch are turn on during the second period, in which the second period is after the first period. Those switches eliminate the drawback of different voltage levels between the input signal and the output signal obtained from the output buffer circuit inputted by the input signal.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 12, 2007
    Inventors: Huang-Chung Cheng, Ya-Hsiang Tai, Bo-Ting Chen, Chun-Hsiang Fang
  • Patent number: 7242396
    Abstract: A method of charging a liquid crystal display (LCD) device that includes providing a plurality of scan lines, providing a plurality of video lines formed orthogonal to the scan lines, providing a plurality of cells, each cell including a transistor and a capacitor coupled to the transistor, each of the cells being formed at an intersection of the scan lines and video lines, providing a periodic signal for writing video data into the LCD device, charging the plurality of cells having first-type transistors during a first half cycle of the periodic signal until a first voltage level of the periodic signal is reached, charging the plurality of cells having second-type transistors during a second half cycle of the periodic signal until a second voltage level of the periodic signal is reached, and discharging the plurality of cells to a predetermined voltage level.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: July 10, 2007
    Assignee: TPO Displays Corp.
    Inventors: Ya-Hsiang Tai, Chaung-Ming Chiu
  • Patent number: 7235443
    Abstract: A method of manufacturing a floating gate is provided. The method includes the steps of forming a tunneling layer on a substrate, and forming a film layer containing a semiconductor component on the tunneling layer. The film layer consists of a semiconductor film or nano-dots.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 26, 2007
    Assignee: National Sun Yat-sen University
    Inventors: Ting-Chang Chang, Shuo-Ting Yan, Po-Tsun Liu, Chi-Wen Chen, Tsung-Ming Tsai, Ya-Hsiang Tai, Simon-M Sze
  • Publication number: 20070052650
    Abstract: A source-follower-type analogue buffer with an active load, a new compensating operation and a display with the source-follower-type analogue buffers are developed to minimize the variation from both the charging time and the device characteristics and maximize the range of the input voltage. In the source-follower-type analogue buffer, during a compensation period, a voltage drop is stored in a proposed storage capacitor, and during a data-input period, the output voltage is compensated by the voltage stored in the storage capacitor.
    Type: Application
    Filed: February 16, 2006
    Publication date: March 8, 2007
    Inventors: Ya-Hsiang Tai, Cheng-Chiu Pai
  • Publication number: 20070040591
    Abstract: A source-follower-type analogue buffer with an active load, a new compensating operation and a display with the source-follower-type analogue buffers are developed to reduce an error voltage which is the difference between an input voltage and an output voltage of the analogue buffer. The source-follower type analogue buffer can also minimize the variation from both the charging time and the device characteristics and maximize the range of the input voltage.
    Type: Application
    Filed: October 10, 2006
    Publication date: February 22, 2007
    Inventors: Cheng-Ho Yu, Fu-Yuan Hsueh, Wei-Cheng Lin, Keiichi Sano, Ya-Hsiang Tai
  • Publication number: 20070040769
    Abstract: A pixel circuit of an active-matrix organic light-emitting diode does not provide currents for an organic light-emitting diode during a compensation period, and provides currents, free from variation of a threshold voltage of a thin-film transistor, for the organic light-emitting diode during a data input period, so as to improve gray levels, increase contrast ratios, and decrease power consumption.
    Type: Application
    Filed: February 24, 2006
    Publication date: February 22, 2007
    Inventors: Ya-Hsiang Tai, Cheng-Chiu Pai
  • Publication number: 20060270158
    Abstract: A method of manufacturing a floating gate is provided. The method includes the steps of forming a tunneling layer on a substrate, and forming a film layer containing a semiconductor component on the tunneling layer. The film layer consists of a semiconductor film or nano-dots.
    Type: Application
    Filed: August 2, 2006
    Publication date: November 30, 2006
    Applicant: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Ting-Chang Chang, Shuo-Ting Yan, Po-Tsun Liu, Chi-Wen Chen, Tsung-Ming Tsai, Ya-Hsiang Tai, Simon-M Sze
  • Patent number: 7123236
    Abstract: A level shifter, with body-biased circuits, is provided for applying in a thin film transistor liquid crystal display (TFT-LCD). The body-biased circuits are configured to bias the bodies of the input terminal transistors of the level shifter so that the threshold voltages of the input terminal transistors are adjustable. This level shifter is capable of operating at a high frequency with low power consumption while a low-level signal is inputting.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: October 17, 2006
    Assignee: TPO Displays Corporation
    Inventors: Ming-Dou Ker, Wen-Hsia Kung, Ya-Hsiang Tai
  • Publication number: 20060170642
    Abstract: A driving method of an LCD panel having a plurality of display groups comprising a plurality of display cells and respectively coupled to a data electrode and a gate electrode. The display cells of the display group are coupled to the data electrode and the gate electrode connected to the display group. The video signals are provided to the data electrodes to make the number of the display groups having the number of the display cells with positive polarity greater than the number of the display cells with negative polarity equal to the number of the display groups having the number of the display cells with negative polarity greater than the number of the display cells with positive polarity. The display groups are coupled to the same gate electrode. Then, the scan signals are provided to the gate electrodes.
    Type: Application
    Filed: March 30, 2006
    Publication date: August 3, 2006
    Applicant: TOPPOLY OPTOELECTRONICS CORP.
    Inventors: Ya-Hsiang Tai, Chaug-Ming Chiu
  • Patent number: 7042437
    Abstract: A driving method of an LCD panel having a plurality of display groups comprising a plurality of display cells and respectively coupled to a data electrode and a gate electrode. The display cells of the display group are coupled to the data electrode and the gate electrode connected to the display group. The video signals are provided to the data electrodes to make the number of the display groups having the number of the display cells with positive polarity greater than the number of the display cells with negative polarity equal to the number of the display groups having the number of the display cells with negative polarity greater than the number of the display cells with positive polarity. The display groups are coupled to the same gate electrode. Then, the scan signals are provided to the gate electrodes.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: May 9, 2006
    Assignee: Toppoly Optoelectronics Corp.
    Inventors: Ya-Hsiang Tai, Chaug-Ming Chiu
  • Patent number: 7038276
    Abstract: A thin-film transistor (TFT) with body contacts is disclosed. It is used in polysilicon TFT LCD's. A body contact region for separating the gate electrode, a source region, and a drain region is made in the TFT. Through the dopants in the body contact region and different impurities in the source region and the drain region, a body-trigger bias is imposed on the body of the TFT. This method reduces the threshold voltage of the TFT driving circuit, thereby increasing the driving current.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: May 2, 2006
    Assignee: Toppoly Optoelectronics Corp.
    Inventors: Ming-Dou Ker, Wen-Hsia Kung, Ya-Hsiang Tai
  • Patent number: 7023507
    Abstract: A color filter and fabricating method thereof. The color filter includes a transparent substrate, provided with a plurality of parallel first light-shielding lines, extending in a first direction, and a plurality of parallel second light-shielding lines, extending in a second direction, wherein a sub-pixel area is defined by two adjacent first light-shielding lines and two adjacent second light-shielding lines. A color-filtering area is formed in the sub-pixel area. An electrode layer is formed on the transparent substrate. At least one insulating line is formed on the electrode layer, directly above a part of the first or the second light-shielding lines, and a conductive line is formed on the insulating line, extending over both ends of the insulating line to electrically connect the electrode layer.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: April 4, 2006
    Assignee: Toppoly Optoelectronics Corp.
    Inventors: Jun Chang Chen, Ya-Hsiang Tai
  • Publication number: 20060003531
    Abstract: A method of manufacturing a floating gate is provided. The method includes the steps of forming a tunneling layer on a substrate, and forming a film layer containing a semiconductor component on the tunneling layer. The film layer consists of a semiconductor film or nano-dots.
    Type: Application
    Filed: September 18, 2005
    Publication date: January 5, 2006
    Inventors: Ting-Chang Chang, Shuo-Ting Yan, Po-Tsun Liu, Chi-Wen Chen, Tsung-Ming Tsai, Ya-Hsiang Tai, Simon-M Sze
  • Publication number: 20050280764
    Abstract: A liquid crystal display (LCD) and fabricating method thereof. The LCD includes a first substrate, provided with a plurality of parallel gate lines and a plurality of parallel signal lines, wherein the gate lines and signal lines are perpendicular, and a pixel area is defined by two adjacent gate lines and two adjacent signal lines. A source electrode, electrically connected to one of the adjacent signal lines, and a drain electrode are formed on the pixel area. A first pixel electrode is formed, electrically connected to the drain electrode, on the pixel area. A second substrate is provided a predetermined distance above the first substrate, having a plurality of color-filtering areas, directly above the respective pixel area. A second pixel electrode layer is formed on the second substrate, wherein the part thereof directly above the signal lines is relatively thin.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 22, 2005
    Applicant: TOPPOLY OPTOELECTRONICS CORP.
    Inventors: Jun Chang Chen, Ya-Hsiang Tai
  • Patent number: 6965423
    Abstract: A liquid crystal display (LCD) and fabricating method thereof. The LCD includes a first substrate, provided with a plurality of parallel gate lines and a plurality of parallel signal lines, wherein the gate lines and signal lines are perpendicular, and a pixel area is defined by two adjacent gate lines and two adjacent signal lines. A source electrode, electrically connected to one of the adjacent signal lines, and a drain electrode are formed on the pixel area. A first pixel electrode is formed, electrically connected to the drain electrode, on the pixel area. A second substrate is provided a predetermined distance above the first substrate, having a plurality of color-filtering areas, directly above the respective pixel area. A second pixel electrode layer is formed on the second substrate, wherein the part thereof directly above the signal lines is relatively thin.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: November 15, 2005
    Assignee: Toppoly Optoelectronics Corp.
    Inventors: Jun Chang Chen, Ya-Hsiang Tai
  • Publication number: 20050195177
    Abstract: A data driver and a method of driving the data driver are disclosed. A multiplexer receives data signals from a signal source. A control circuit periodically outputs a plurality of control signals to the multiplexer. When the multiplexer receives the control signals, transistors of the multiplexer are turned on for driving different loads with a data signal at different timings or for driving the same load with different signals at different timings.
    Type: Application
    Filed: August 10, 2004
    Publication date: September 8, 2005
    Inventor: Ya-Hsiang Tai
  • Publication number: 20050190134
    Abstract: A liquid crystal display and a dummy-loading device thereof are provided. The dummy-loading device is suitable for a liquid crystal display having a plurality of pixel bands. The liquid crystal display comprises an input signal line to receive image data, and a plurality of horizontal switches and a plurality of shift registers connected in series. The shift registers sequentially shift and output a video control signal for conducting the input signal lines and the pixel bands. A dummy-loading device is disposed in the liquid crystal display, comprising a dummy pixel band, a dummy shift register and a dummy horizontal switch on one side of the liquid crystal display, for providing the edge band compensation to resolve unbalanced imaging.
    Type: Application
    Filed: February 4, 2005
    Publication date: September 1, 2005
    Inventors: Wei Wang, Ya-Hsiang Tai
  • Patent number: 6930372
    Abstract: A storage capacitor structure of a planar display is disclosed. The storage capacitor includes a substrate, a bottom electrode, an insulator, and a top electrode. The bottom electrode or top electrode has an uneven surface toward the insulator interposed between the two electrodes in order to increase the capacitance of the storage capacitor structure. A method for fabricating such storage capacitor structure is also disclosed. It includes steps of providing a substrate; and forming a bottom electrode, an insulator, and a top electrode in sequence. The bottom electrode or the top electrode has the uneven surface by an etching step.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: August 16, 2005
    Assignee: Toppoly Optoelectronics Corp.
    Inventors: Chaung-Ming Chiu, Ya-Hsiang Tai
  • Publication number: 20050102787
    Abstract: A method of charging a liquid crystal display (LCD) device that includes providing a plurality of scan lines, providing a plurality of video lines formed orthogonal to the scan lines, providing a plurality of cells, each cell including a transistor and a capacitor coupled to the transistor, each of the cells being formed at an intersection of the scan lines and video lines, providing a periodic signal for writing video data into the LCD device, charging the plurality of cells having first-type transistors during a first half cycle of the periodic signal until a first voltage level of the periodic signal is reached, charging the plurality of cells having second-type transistors during a second half cycle of the periodic signal until a second voltage level of the periodic signal is reached, and discharging the plurality of cells to a predetermined voltage level.
    Type: Application
    Filed: November 18, 2003
    Publication date: May 19, 2005
    Inventors: Ya-Hsiang Tai, Chaung-Ming Chiu