Patents by Inventor Hon-Yuan Leo

Hon-Yuan Leo 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: 7456813
    Abstract: A liquid crystal display (LCD) includes a plurality of pixels, a source driver and a gate driver, each pixel comprising a transistor, a storage capacitor, a pixel electrode, a common electrode coupled to a common voltage, and liquid crystal molecules located between the pixel electrode and the common electrode, the transistor conducting a grey-scale signal generated by the gate driver to the pixel electrode based on a scan voltage generated by the gate driver, the LCD being characterized in that a substrate electrode of the transistor is coupled to a first voltage, and the storage capacitor is coupled to a substrate voltage and the transistor. The common voltage is positive proportional to the substrate voltage.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: November 25, 2008
    Assignee: Himax Technologies Limited
    Inventors: Hon-Yuan Leo, Mao-Jung Chung, Yung-Yuan Ho, Yen-Chen Chen
  • Patent number: 7388624
    Abstract: A reflective type liquid crystal panel including a substrate, an array of transistors, capacitors, metal patterns, conductive walls, reflective pixel electrodes, an opposite substrate, and a liquid crystal layer is provided. The transistors and the capacitors are disposed on the substrate, and the capacitors are surrounding drain terminals of the corresponding transistors respectively. The metal patterns cover the corresponding transistors and overlap the corresponding capacitors respectively, and the metal patterns are electrically connected to the corresponding drain terminals respectively. The conductive walls surround the corresponding transistors and are connected between the corresponding metal patterns and the corresponding capacitors respectively. The reflective pixel electrodes are disposed over the corresponding metal patterns and electrically connected to the corresponding drain terminals respectively.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: June 17, 2008
    Assignee: Himax Display, Inc.
    Inventors: Wei-Hsiao Chen, Hon-Yuan Leo, Cheng-Chi Yen, Yao-Jen Tsai
  • Publication number: 20070146293
    Abstract: An LCOS IC and electronic device using the same is provided. The electronic device comprises an LCOS IC, a processor and a cooler. The LCOS IC comprising a temperature sensor embedded in the LCOS IC for sensing a temperature and outputting a temperature sensing signal according to the temperature. The processor is coupled to the LCOS IC for receiving the temperature sensing signal and outputting a cooler control signal according to the temperature sensing signal. The cooler is coupled to the processor for receiving the cooler control signal and adjusting the cooler accordingly.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 28, 2007
    Inventors: Hon-Yuan Leo, Wei-Hsiao Chen, Cheng-Chi Yen, Yao-Jen Tsai
  • Publication number: 20070103621
    Abstract: A reflective type liquid crystal panel including a substrate, an array of transistors, capacitors, metal patterns, conductive walls, reflective pixel electrodes, an opposite substrate, and a liquid crystal layer is provided. The transistors and the capacitors are disposed on the substrate, and the capacitors are surrounding drain terminals of the corresponding transistors respectively. The metal patterns cover the corresponding transistors and overlap the corresponding capacitors respectively, and the metal patterns are electrically connected to the corresponding drain terminals respectively. The conductive walls surround the corresponding transistors and are connected between the corresponding metal patterns and the corresponding capacitors respectively. The reflective pixel electrodes are disposed over the corresponding metal patterns and electrically connected to the corresponding drain terminals respectively.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 10, 2007
    Inventors: Wei-Hsiao Chen, Hon-Yuan Leo, Cheng-Chi Yen, Yao-Jen Tsai
  • Publication number: 20060176256
    Abstract: The present invention relates to a LCOS display driving system. The driving sequential control block generates a control code representing a loading sequence of the R, G, and B data for pixels in one of scan lines. The multiplexer multiplexes the R, G, and B data from latches according the control code. The shared level shifter shifts the level of the R, G, and B data from the multiplexer. The digital analog converts converting the R, G, and B data to a corresponding analog R, G, and B data voltage. The shared unity-gain buffer stores the analog R, G, and B data voltage from the shared digital analog converter. The demultiplexer demultiplexes the analog R, G, and B data voltage according the control code.
    Type: Application
    Filed: February 9, 2005
    Publication date: August 10, 2006
    Applicant: HIMAX TECHNOLOGIES, INC.
    Inventors: Cheng-Chi Yen, Hon-Yuan Leo, Yung-Yuan Ho, Yen-Chen Chen
  • Publication number: 20060114203
    Abstract: A method for driving a dark ring of a liquid-crystal-on-silicon (LCOS) display is provided to prevent the fringe effect (bright lines) due to the constant voltage difference between the dark ring and the adjoining pixels within the LCOS display. A dark ring is divided into a plurality of portions. The polarity of each portion is controlled in accordance with the polarity of the adjoining pixels within the LCOS display and the scan direction of gate drivers such that the polarity inversion for each portion will coincide with that for the adjoining pixels within the LCOS display so as to avoid the fringe effect (bright lines).
    Type: Application
    Filed: November 8, 2004
    Publication date: June 1, 2006
    Inventors: Hon-Yuan Leo, Yung-Yuan Ho, Yen-Chen Chen
  • Publication number: 20060050035
    Abstract: A liquid crystal display (LCD) includes a plurality of pixels, a source driver and a gate driver, each pixel comprising a transistor, a storage capacitor, a pixel electrode, a common electrode coupled to a common voltage, and liquid crystal molecules located between the pixel electrode and the common electrode, the transistor conducting a grey-scale signal generated by the gate driver to the pixel electrode based on a scan voltage generated by the gate driver, the LCD being characterized in that a substrate electrode of the transistor is coupled to a first voltage, and the storage capacitor is coupled to a substrate voltage and the transistor. The common voltage is positive proportional to the substrate voltage.
    Type: Application
    Filed: February 15, 2005
    Publication date: March 9, 2006
    Inventors: Hon-Yuan LEO, Mao-Jung CHUNG, Yung-Yuan HO, Yen-Chen CHEN
  • Publication number: 20050225521
    Abstract: A liquid crystal on silicon panel and a driving method thereof are provided. The LCOS panel and the driving method thereof of the present invention will complete driving the M×K sub-pixels after scanning I times, wherein M is the horizontal resolution and I<K. Hence, it can reduce the product cost of the drivers without sacrificing the frame rate. In addition, because of the discrete design of the even column driver and odd column driver, the width for the layout of the column driver can be double.
    Type: Application
    Filed: July 2, 2004
    Publication date: October 13, 2005
    Inventors: Hon-Yuan Leo, Yen-Chen Chen, Yung-Yuan Ho