Patents by Inventor Hung-Ta Liu

Hung-Ta Liu 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: 9684400
    Abstract: The present invention provides a capacitive sensing detection method for an active pixel matrix. The method comprises to select a first sensing region in the active pixel matrix. Then, a first signal is transferred to the first sensing region. Next, a second sensing region is selected. A second signal is transferred to the second sensing region for sensing. Finally, a change of the first signal and the second signal is detected and calculated to determine a position.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: June 20, 2017
    Inventor: Hung-Ta Liu
  • Publication number: 20170133526
    Abstract: A photoelectric conversion device including a transparent substrate, a first electrode, at least a photoelectric conversion layer and a second electrode is provided. The first electrode is located on the transparent substrate. The transparent substrate means that at least some parts of the substrate area are transparent. At least a photoelectric conversion layer is located on the first electrode, wherein the optical light transmittance of the photoelectric conversion layer in at least a portion of the visible spectrum is higher than 20%. The second electrode is located on the photoelectric conversion layer.
    Type: Application
    Filed: January 23, 2017
    Publication date: May 11, 2017
    Inventor: Hung-Ta Liu
  • Patent number: 9620041
    Abstract: A driving method drives a display. The display includes a scan driving circuit, a data driving circuit, a plurality of first signal lines coupling with the scan driving circuit, and a plurality of second signal lines coupling with the data driving circuit. The first signal lines cross the second signal lines to form the pixel matrix. The driving method comprises to divide the pixel matrix into at least a first region and a second region, then, to drive the first region by a first frame rate, and to drive the second region by a second frame rate, wherein the first frame rate is leas than the second frame rate.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: April 11, 2017
    Inventor: Hung-Ta Liu
  • Patent number: 9590124
    Abstract: A photoelectric conversion device including a transparent substrate, a first electrode, at least a photoelectric conversion layer and a second electrode is provided. The first electrode is located on the transparent substrate. The transparent substrate means that at least some parts of the substrate area are transparent. At least a photoelectric conversion layer is located on the first electrode, wherein the optical light transmittance of the photoelectric conversion layer in at least a portion of the visible spectrum is higher than 20%. The second electrode is located on the photoelectric conversion layer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 7, 2017
    Inventor: Hung-Ta Liu
  • Patent number: 9529479
    Abstract: A touch sensing method to be implemented by a sensing unit of a touch sensing device is disclosed. The sensing unit is coupled to a plurality of conductor lines of the touch sensing device that extend in a same direction. The method includes: using the sensing unit to provide a sensing signal to at least one of the conductor lines for radiation thereby; and using the sensing unit to receive the radiated sensing signal from at least another one of the conductor lines for sensing a feature parameter associated with the sensing signal received from the at least another one of the conductor lines.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 27, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9495896
    Abstract: The invention discloses a liquid crystal display (LCD) apparatus and a brightness/luminance holding ratio compensation method. A backlight module of the LCD apparatus may form a plurality of backlight shield-blocking periods in a display frame cycle or adjust output brightness gradually, for compensating a brightness/luminance bias caused by a transmittance variance of liquid crystal cell in the low refresh rate driving LCD apparatus, so as to avoid some abnormal display effects, such as screen flicker. Besides, the LCD apparatus has better energy efficiency by utilizing a low-voltage gray level driving method or saving the power consumption of the backlight module.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: November 15, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9396689
    Abstract: A driving method for a display is provided. This display includes a first driver, a second driver, a plurality of first signal lines coupling with the first driver, and a plurality of second signal lines coupling with the second driver. The first lines cross the second lines to form a pixel array with a plurality of pixels. The driving method includes the following steps. First, an image signal with a polarity is applied to the pixel array. The polarity is a first polarity or a second polarity opposite to the first polarity. Then, the image signal applied to at least one pixel of the pixel array is maintained in a same polarity during two successive frames.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: July 19, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9373304
    Abstract: A display control method used in a display with color light sources. Whether a frame is tending to at least one of colors of color lights is determined. When the frame is tending to the at least one of the colors, executing at least one of steps of: (1) adjusting the corresponding color source of the frame to which color the frame is not tending to be weak, dark, or even turned off, and (2) adjusting the corresponding color light source of the frame to which color the frame is tending to be strong or light.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: June 21, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9367183
    Abstract: A touch device is provided. The touch device has a touch mode and a common-electrode mode. The touch device comprises a touch-sensing module, a common-electrode layer, second touch units, second wires, a common-potential circuit and switches. The common-electrode layer comprises first touch units and first wires for connecting first touch units and the touch-sensing module. The first and the second touch units are arranged in an interlace manner. The second wires connect the second touch units and the touch-sensing module. The switch is open during the touch mode such that the first and the second touch units detect, induct and transmit a touch signal to the touch-sensing module to determine a coordinate, strength and variation of a touch. The switch is close during the common-electrode mode such that the first touch units are connected to the common-potential circuit to be further connected to a common voltage.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: June 14, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9274358
    Abstract: The invention discloses a liquid crystal display apparatus and a pixel element design thereof. The liquid crystal display apparatus includes a register, a liquid crystal display panel, a driving circuit, a dynamic frequency adjustment unit and a control circuit. The liquid crystal display panel includes a plurality of liquid crystal capacitors and a plurality of pixel units. The driving circuit includes a plurality of storage capacitors corresponding to the liquid crystal capacitors. A capacitance of the storage capacitors far exceeds a capacitance of the liquid crystal capacitors. The driving circuit casts the image information on the liquid crystal display panel. The dynamic frequency adjustment unit computes and judges based on an image characteristic classification of the image information, so as to generate a display mode control signal dynamically.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 1, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9231144
    Abstract: A light collecting module includes a pliable light guide, an inner light source, and a photocell. A surface of the light guide has a first area, a second area, and a third area. The first and second areas face each other, and the third area is adjacent to the first or second area. At least one optical structure is formed in the second area, and the photocell is adjacent to the third area. The optical structure is for redirecting ambient light incident on the first or second area such that the ambient light is guided to the third area by refraction or reflection and incident on the photocell. The optical structure is for redirecting the light from the inner light source such that the light is guided to the surface of the light guide by refraction or reflection and exits the light guide.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: January 5, 2016
    Inventor: Hung-Ta Liu
  • Patent number: 9214114
    Abstract: A method for adjusting a gamma curve used in a display control system of a display apparatus, and the method comprises steps of: analyzing each sub pixel gray value distribution of each color in a frame; and adjusting at least a gamma reference voltage according to the sub pixel gray value distribution of the color, such that a gray level voltage number corresponding to the sub pixel gray values in at least a predetermine region which has the relative large statistical number or ratio is increased, and a gray level voltage number corresponding to the sub pixel gray values in at least a predetermine region which has the relative low statistical number or ratio is decreased.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: December 15, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9202441
    Abstract: An electronic apparatus system is provided. The electronic apparatus system includes a register, a display mode computation unit, a display device and a control circuit. The register stores image information having a data input refresh frequency. The display mode computation unit generates a display mode control signal by computation based on an image characteristic categorization of the image information. The display device includes a display panel having a plurality of pixel units. The control circuit controls a display mode and a drive mode of the display panel according to the display mode control signal to further adjust a display refresh frequency of the display panel.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: December 1, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9129564
    Abstract: A display control method used in a display apparatus with multiple colored light sources, wherein the colored light sources emit different color lights, the color cast sub frame in the frame of the display apparatus tends to a specific color, and the display control method comprises for the frame, increasing the specific color light source of the frame and decreasing the other color light source of the frame. For the white-tending sub frame of the frame, sub-pixel values of the specific color are decreased according to the increasing level of the specific color light source to generate modified sub-pixel values. For the white-tending frame, the modified sub-pixel values and the sub-pixel values of the other colors are increased according to the decreasing level of the other colored light sources.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: September 8, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9069421
    Abstract: The present invention provides a dual-mode touch sensing apparatus. The apparatus includes a sensor; a plurality of first conductive line, a first direction selection line, and a first direction transmission line arranged in parallel to each other and in a first direction, wherein the first direction selection line corresponds to the first direction transmission line; and a plurality of second conductive line, a second direction selection line, and a second direction transmission line arranged in parallel to each other and in a second direction, wherein the second conductive lines, the second direction selection line and the second direction transmission line cross the first conductive lines, the first direction selection line and the first direction transmission line.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: June 30, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9063607
    Abstract: A dual mode touch sensing display includes a display module, and a dual mode touch sensing module disposed at the display module. The dual mode touch sensing module includes a plurality of first conductors, a plurality of second conductors, and a switch unit. The first conductors extend in a first direction. The second conductors extend in a second direction intersecting the first direction. The switch unit includes a first switch circuit coupled to the first conductors and capable of interconnecting at least a portion of the first conductors to form sensing loops, and a second switch circuit coupled to the second conductors and capable of interconnecting at least a portion of the second conductors to form sensing loops.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 23, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9046976
    Abstract: A method for transmitting and detecting touch sensing signals in a touch device having a set of parallel conducting lines includes: providing a work signal and a touch sensing signal to a selected portion of the conducting lines that serve as touch sensing lines and that cooperate to define a touch sensing area; and detecting the touch sensing lines to obtain a detecting signal that corresponds to the touch sensing signal and that indicates occurrence of a touch event, so as to determine at least one of a position and an intensity of the touch event. For each of the touch sensing lines, the work signal is provided during a first time interval and the touch sensing signal is provided during a second time interval.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 2, 2015
    Inventor: Hung-Ta Liu
  • Patent number: 9030394
    Abstract: A display control method used in a display with color light sources. Whether at least one of frame gray levels of the colors associated with the frame is less than a frame gray level threshold is determined. When the at least one of the frame gray levels of the colors associated with the frame is less than the frame gray level threshold, the frame gray level of the color less than the frame gray level threshold is increased, and the corresponding color light source of the color of the frame is adjusted to be weak or dark accordingly.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 12, 2015
    Inventor: Hung-Ta Liu
  • Publication number: 20150070345
    Abstract: An electronic apparatus system is provided. The electronic apparatus system includes a register, a display mode computation unit, a display device and a control circuit. The register stores image information having a data input refresh frequency. The display mode computation unit generates a display mode control signal by computation based on an image characteristic categorization of the image information. The display device includes a display panel having a plurality of pixel units. The control circuit controls a display mode and a drive mode of the display panel according to the display mode control signal to further adjust a display refresh frequency of the display panel.
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Inventor: Hung-Ta Liu
  • Publication number: 20150070618
    Abstract: The invention discloses a liquid crystal display apparatus and a pixel element design thereof. The liquid crystal display apparatus includes a register, a liquid crystal display panel, a driving circuit, a dynamic frequency adjustment unit and a control circuit. The liquid crystal display panel includes a plurality of liquid crystal capacitors and a plurality of pixel units. The driving circuit includes a plurality of storage capacitors corresponding to the liquid crystal capacitors. A capacitance of the storage capacitors far exceeds a capacitance of the liquid crystal capacitors. The driving circuit casts the image information on the liquid crystal display panel. The dynamic frequency adjustment unit computes and judges based on an image characteristic classification of the image information, so as to generate a display mode control signal dynamically.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventor: Hung-Ta LIU