Patents by Inventor Bou Chi Chang

Bou Chi Chang 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: 7538751
    Abstract: A method of resolving display delay includes dividing a period of turning on scan lines of an image into at least two sections. At least one section of the period is for charging pixels while pixels are discharged during the other sections of the period for enabling the charging of scan lines (i.e., enabling pixel displaying). The discharging of scan lines (i.e., erasing pixel displaying) is performed a designated number of scan lines apart so as to achieve the purpose of preventing the liquid crystal display from generating display delay and exhibiting an image-sticking phenomena.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: May 26, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Bou-Chi Chang, Chang-Ho Liou, Hsin-Mao Huang, Chia-Pao Chang
  • Patent number: 7532182
    Abstract: The present invention discloses an image display with photo sensor, electrically connected to a data line, a first scan line, a second scan line and a sensing line, and being powered by a first bias voltage and a second bias voltage, comprising a light emitting element, a first transistor, a second transistor, a third transistor, a photo sensor and a capacitor, which is featuring by arranging photo sensors in the proximity of light emitting elements so as to enable the image display with photo sensor to act as an output device for displaying images and also as an input device for detecting light.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 12, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Huai-Yuan Tseng, Bou-Chi Chang, Yung-Hui Yeh
  • Patent number: 7215317
    Abstract: The present invention provides a method for modulating backlight sources for flat panel displays (FPD), which comprises: lowing steps: step 31: turning on a display screen; step 32: identifying whether the total number of the BLL groups provided on the backlight module is an odd number or an even number; step 33: turning on the one BLL group located at the center-most region of the backlight module while the total number of the BLL groups is an odd number; step 34: turning on the two BLL groups located at the center-most region of the screen while the total number of the BLL groups is an even number; step 35: turning on the two backlight groups located at the two outer side of the center turned-on backlight groups while turning off the center turned-on backlight groups, and similarly, progressing the turning-on and the turning-off from the center region to the two outer edge of the backlight module and then reverse-progressing respectively from the two edges to the center region, so as to complete a full cycl
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 8, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Chang Ho Liou, Bou Chi Chang, Chung-Yi Chang, Wei-Jen Chang
  • Publication number: 20060214893
    Abstract: The present invention discloses an image display with photo sensor, electrically connected to a data line, a first scan line, a second scan line and a sensing line, and being powered by a first bias voltage and a second bias voltage, comprising a light emitting element, a first transistor, a second transistor, a third transistor, a photo sensor and a capacitor, which is featuring by arranging photo sensors in the proximity of light emitting elements so as to enable the image display with photo sensor to act as an output device for displaying images and also as an input device for detecting light.
    Type: Application
    Filed: May 27, 2005
    Publication date: September 28, 2006
    Inventors: Huai-Yuan Tseng, Bou-Chi Chang, Yunng-Hui Yeh
  • Publication number: 20060055688
    Abstract: A method of resolving display delay is disclosed. The method of resolving display delay comprises the steps of: dividing a period of turning on scan lines of an image is into at least two sections; and charging at least one section of the period while discharging the other sections of the period for enabling the charging of scan lines (i.e. enabling pixel displaying) and the discharging of scan lines (i.e. erasing pixel displaying) are performed with a designated number of scan lines apart so as to achieve the purpose of preventing the liquid crystal display from generating display delay and image-sticking phenomena.
    Type: Application
    Filed: March 9, 2005
    Publication date: March 16, 2006
    Inventors: Bou-Chi Chang, Chang-Ho Liou, Hsin-Mao Huang, Chia-Pao Chang
  • Publication number: 20060055647
    Abstract: A method for resolving display nonuniformity is disclosed. The method comprises the steps of: (a1) turning on a display screen; (a2) dividing the display screen into a plurality of areas; (a3) using the center line as a baseline in each area for separating the pixel capacitors of each area into left pixel capacitors and right pixel capacitors, and turning on the pixel capacitor arranged at the center line; (a4) turning on a left pixel capacitor arranged most adjacent to the center line after the pixel capacitor at the center line is turned on; (a5) turning on a right pixel capacitor arranged most adjacent to the center line after the pixel capacitor at the near-most left side of the center line is turned on; and (a6) turning on a left pixel capacitor just next to the previous turned-on left pixel capacitor and then turning on a right pixel just next to the previous turned-on right capacitor, and so on, i.e.
    Type: Application
    Filed: November 10, 2004
    Publication date: March 16, 2006
    Inventors: Bou-Chi Chang, Yu-Xian Chang, Hsin-Mao Huang