Patents by Inventor Cheng-Chung Peng

Cheng-Chung Peng 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).

  • Publication number: 20110199550
    Abstract: A new type of liquid crystal display (LCD) device with improved high transmittance and wide-view-angle characteristics while without gray-level inversion at an inclined viewing angle is provided. The LCD device includes a first substrate with common electrodes, a second substrate with at least one pixel unit, a liquid crystal (LC) layer disposed between the first substrate and the second substrate, a first polarizer, and a second polarizer. The pixel unit has a pixel electrode, which is formed by at least one dense electrode area and at least one sparse electrode area. The LC molecules of the LC layer form a continuous-domain alignment after being driven by a voltage.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Inventors: Shih-Hung FAN, Yuhren SHEN, Cheng-Chung PENG
  • Publication number: 20110164206
    Abstract: The present invention provides an improved type of liquid crystal (LC) display device with wide-viewing angle and high optical transmittance. The LC display of the present invention consists of: at least one LC alignment apparatus, which makes the LC molecules within the display area forming a continuous-domain or multi-domain alignments, and hence improve its wide-viewing-angle characteristics; a LC layer formed by Nematic type LC with chiral dopants, and with optimal parameters of the optical path difference ?nd and LC rotations of d/p ratio, such that LC molecules can be aligned along all radial directions to achieve optimal transmittance, and thus producing an wide-viewing-angle LC display improved transmittance without the formation of dark fringes in the display area.
    Type: Application
    Filed: December 29, 2010
    Publication date: July 7, 2011
    Inventors: Shih-Hung FAN, Yuhren Shen, Cheng-Chung Peng, Hsin-Ta Lee
  • Patent number: 7920121
    Abstract: A dynamic control method for controlling backlight module of liquid crystal display (LCD) comprises steps of: receiving a frame data which is transferred to the LCD and consists a plurality of raw grayscale level; processing a statistical analysis for distribution of the plurality of raw grayscale level; and transferring a plurality of corrected grayscale level which is resulted from the statistical analysis corresponding to the raw grayscale level to the backlight control unit and a data modification simultaneously, wherein the backlight control unit uses the plurality of corrected grayscale level to modify brightness of backlight module and the data modification uses the plurality of corrected grayscale level to compare with the plurality of raw grayscale level for accurate display performance, so that the electrical power consumption is reduced and image quality is enhanced.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: April 5, 2011
    Assignee: VastView Technology Inc.
    Inventors: Yuh-Ren Shen, Chang-Cheng Lin, Cheng-Chung Peng, Chih-Hao Wu
  • Publication number: 20100265443
    Abstract: This object aims to provide a liquid crystal display panel with good in viewing angle characteristic, and capable of carrying out a high brightness display. The liquid crystal display device includes a first substrate having at least one pixel unit and at least one first orienting structure, a second substrate disposed opposite to the first substrate, and a liquid crystal layer sealed between the first and second substrates and having negative dielectric anisotropy. The pixel unit includes a pixel electrode that is located in the display area, while the first orienting structure is located outside the display area. In addition, the liquid crystal layer contains an optical rotation material, and some of the liquid crystal molecules in the liquid crystal layer are inclined toward the internal part or the external part of the pixel unit by the first orienting structure.
    Type: Application
    Filed: August 18, 2009
    Publication date: October 21, 2010
    Inventors: Cheng-Chung PENG, Yuren Shen, Shih-Hung Fa, Jin-Jei Wu
  • Patent number: 7812802
    Abstract: An overdrive accuracy adjustment device and method for use in a liquid crystal display panel is presented. According to a current grayscale value of a pixel in an awaiting to be displayed image and a previous grayscale value of the corresponding pixel in an already-displayed image, the corresponding overdrive grayscale value is found from a look-up table. In order to more efficiently use the limited storage capacity of the look-up table as well as improve the accuracy of the overdrive, in accordance with the physical characteristics of the liquid crystal display panel in particular (in particular to the grayscale values which often require the overdrive), the gap size between the current grayscale values and/or the gap size between the previous grayscale values may be adjusted in the look-up table, without having to increase the quantity of the overdrive grayscale values stored in the look-up table.
    Type: Grant
    Filed: February 15, 2007
    Date of Patent: October 12, 2010
    Assignee: VastView Technology Inc.
    Inventors: Chang-Cheng Lin, Yuh-Ren Shen, Cheng-Chung Peng
  • Publication number: 20090180029
    Abstract: A system for adjusting color image quality includes converting color video signal sources into component video signals including a luminance signal and chrominance signals. A signal axis rotation circuit performs coordination transformation on the chrominance signals in accordance with a hue calibration parameter; and a multiplier multiplies the coordinate-transformed chrominance signals with a chroma calibration parameter to obtain output chrominance signals. The output chrominance signals and the luminance signal together form a component chrominance signal, which is applied to and output by a chrominance signal inverse conversion unit.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Inventors: Cheng-Chung Peng, Yuhren Shen
  • Publication number: 20080284775
    Abstract: The present invention discloses a liquid crystal display driving system that uses at least one temperature sensor to detect a temperature of a LCD panel, and outputs a gamma compensation voltage value according to the detected temperature, and further uses an overdrive compensation unit to receive the gamma compensation voltage value, and obtains the overdrive compensation voltage value of two gamma overdrive compensation curves of a temperature gradient corresponding to a region of the LCD panel by a gamma mapping method, or uses an overdrive compensation unit to derive a corresponding partial compensation data table according to the temperature and the compensation data table, and at least one overdrive compensation table (OD compensation table) corresponding to the change of temperature gradient in a region of the LCD panel is derived, an outputted display image after being processed by an overdrive lookup table (OD LUT) is compensated, so as to adjust the overdrive voltage of the LCD panel and enhance the
    Type: Application
    Filed: May 17, 2007
    Publication date: November 20, 2008
    Inventors: Yuhren Shen, Chang-Cheng Lin, Cheng-Chung Peng
  • Publication number: 20080266236
    Abstract: A dynamic control method for controlling backlight module of liquid crystal display (LCD) comprises steps of: receiving a frame data which is transferred to the LCD and consists a plurality of raw grayscale level; processing a statistical analysis for distribution of the plurality of raw grayscale level; and transferring a plurality of corrected grayscale level which is resulted from the statistical analysis corresponding to the raw grayscale level to the backlight control unit and a data modification simultaneously, wherein the backlight control unit uses the plurality of corrected grayscale level to modify brightness of backlight module and the data modification uses the plurality of corrected grayscale level to compare with the plurality of raw grayscale level for accurate display performance, so that the electrical power consumption is reduced and image quality is enhanced.
    Type: Application
    Filed: April 26, 2007
    Publication date: October 30, 2008
    Applicant: VastView Technology Inc.
    Inventors: Yuh-Ren Shen, Chang-Cheng Lin, Cheng-Chung Peng, Chih-Hao Wu
  • Publication number: 20080198115
    Abstract: An overdrive accuracy adjustment device and method for use in liquid crystal display panel is presented. According to a current grayscale value of a pixel in an awaiting to be displayed image and a previous grayscale value of the corresponding pixel in an already-displayed image, the corresponding overdrive grayscale value is found from the look-up table. In order to more efficiently use the limited storage capacity of the look-up table as well as improving the accuracy of the overdrive, in accordance to the physical characteristics of the liquid crystal display panel in particular (in particular to the grayscale values which often required the overdrive), the gap size between the current grayscale values and/or the previous grayscale values with each other should be adjusted in the look-up table, without having to increase the quantity of the overdrive grayscale values stored in the look-up table.
    Type: Application
    Filed: February 15, 2007
    Publication date: August 21, 2008
    Inventors: Chang-Cheng Lin, Yuh-Ren Shen, Cheng-Chung Peng