Patents by Inventor Ching Chao Chang

Ching Chao 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).

  • Publication number: 20130258267
    Abstract: The disclosure provides a method for fabricating a mesoporous oxide hollow particle and a liquid crystal device including the same. The liquid crystal device includes: a first substrate; a second substrate; and a liquid crystal composition formed between the first substrate and the second substrate, wherein the liquid crystal composition includes a liquid crystal molecule and a mesoporous oxide hollow particle.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 3, 2013
    Applicant: InnoLux Corporation
    Inventors: Ching-Chao CHANG, Kuang-Yao Lo, Hong-Ping Lin
  • Patent number: 8502839
    Abstract: A display device includes a display panel and a driving circuit. The display panel has a pixel including red, green, blue, and white sub-pixels. The driving circuit receives a display signal and provides at least a first luminance weighting and a second luminance weighting of the red, green, blue, and white sub-pixels respectively. The display device selects one of the first luminance weighting and the second luminance weighting to drive the pixel according to the different operating modes of the display device.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: August 6, 2013
    Assignee: HannStar Display Corp.
    Inventors: Sheng-Pin Tseng, Ching-Chao Chang, Chien-Yung Cheng
  • Patent number: 8339343
    Abstract: The present invention discloses a liquid crystal display (LCD) device. The LCD device comprises an upper substrate and a lower substrate. Every two data lines and two scan lines define two pixels. Each pixel comprises a pixel electrode and a transistor, and a biased electrode is arranged under a slot between two pixel electrodes of the two pixels. When positive frame, the voltage of the biased electrode, VE, is greater than the voltage the pixel electrode, VP; when negative frame, the voltage of the biased electrode, VE, is smaller than the voltage the pixel electrode, VP.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: December 25, 2012
    Assignee: Hannstar Display Corp.
    Inventor: Ching-Chao Chang
  • Patent number: 7884791
    Abstract: The present invention provides an over driving circuit of a liquid crystal display is provided. The circuit comprises a buffer, a memory coupling with the buffer and a modifier coupling with the buffer, the memory and a signal line. This signal line is used to transfer a row number signal to the modifier. The modifier may generate a corrected gray level value to a pixel unit based on a gray level value of present frame from the buffer, a gray level value of previous frame from the memory and the row number signal.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: February 8, 2011
    Assignee: Hannstar Display Corporation
    Inventors: Sheng-Pin Tseng, Ching-Chao Chang, Po-Sheng Shih
  • Patent number: 7768597
    Abstract: A liquid crystal display is disclosed. A first substrate and a second substrate correspond to each other. A plurality of first common electrode and a second common electrode are arranged on the first substrate. A plurality of first pixel electrodes and a second pixel electrode correspond to the first common electrodes and the second common electrode separately, and each of the pixel electrodes includes a plurality of electrode portions having a width l, tilted an angle ?, and separated by a distance w. A plurality of first color units and a second color unit are arranged on the second substrate and correspond to the first pixel electrodes and the second pixel electrode separately, wherein at least one of the width l, the distance w and the angle ? in the first color units is different from that in the second color unit.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 3, 2010
    Assignee: Hannstar Display Corp.
    Inventor: Ching-Chao Chang
  • Publication number: 20100085497
    Abstract: The present invention discloses a liquid crystal display (LCD) device. The LCD device comprises an upper substrate and a lower substrate. Every two data lines and two scan lines define two pixels. Each pixel comprises a pixel electrode and a transistor, and a biased electrode is arranged under a slot between two pixel electrodes of the two pixels. When positive frame, the voltage of the biased electrode, VE, is greater than the voltage the pixel electrode, VP; when negative frame, the voltage of the biased electrode, VE, is smaller than the voltage the pixel electrode, VP.
    Type: Application
    Filed: December 30, 2008
    Publication date: April 8, 2010
    Applicant: Hannstar Display Corp.
    Inventor: Ching-Chao Chang
  • Patent number: 7605891
    Abstract: A transreflective liquid crystal display comprises a plurality of pixels. Each pixel includes at least four subpixels including a white subpixel, a red subpixel, a green subpixel and a blue subpixel. Each subpixel comprises a transmissive area and a reflective area. The reflective area of the white subpixel is smaller than that of each of the R, G, and B subpixels so that the percentages of effective output light of the white subpixel and the other colored subpixels are consistent in both reflective and transmissive modes.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: October 20, 2009
    Assignee: Hannstar Display Corporation
    Inventor: Ching Chao Chang
  • Publication number: 20090135207
    Abstract: A display device includes a display panel and a driving circuit. The display panel has a pixel including red, green, blue, and white sub-pixels. The driving circuit receives a display signal and provides at least a first luminance weighting and a second luminance weighting of the red, green, blue, and white sub-pixels respectively. The display device selects one of the first luminance weighting and the second luminance weighting to drive the pixel according to the different operating modes of the display device.
    Type: Application
    Filed: July 2, 2008
    Publication date: May 28, 2009
    Inventors: Sheng-Pin Tseng, Ching-Chao Chang, Chien-Yung Cheng
  • Publication number: 20090109127
    Abstract: A three-dimensional image display device and a displaying method thereof. The display device includes a pixel array, a sub-pixel rendering device and a mask. The sub-pixel rendering device provides data signals to the sub-pixels to form the first frames and the second frames. The first frame and the second frame include a plurality of first pixel regions and a plurality of second pixel regions. The second pixel region and the adjacent first pixel regions have some sub-pixels in common. The mask projects the first frames and the second frames as a first image and a second image.
    Type: Application
    Filed: March 25, 2008
    Publication date: April 30, 2009
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Ching-Chao Chang, Hung-Chang Chang, Chien-Yung Cheng
  • Publication number: 20080316401
    Abstract: A transreflective liquid crystal display comprises a plurality of pixels. Each pixel includes at least four subpixels including a white subpixel, a red subpixel, a green subpixel and a blue subpixel. Each subpixel comprises a transmissive area and a reflective area. The reflective area of the white subpixel is smaller than that of each of the R, G, and B subpixels so that the percentages of effective output light of the white subpixel and the other colored subpixels are consistent in both reflective and transmissive modes.
    Type: Application
    Filed: June 22, 2007
    Publication date: December 25, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventor: Ching Chao Chang
  • Patent number: 7400373
    Abstract: A liquid crystal display (LCD) panel has a structure in which one of the thin film transistor (TFT) substrate and the color filter (CF) substrate has an indented pattern surface to contact or surround the end of the spacer, such that the friction between the spacers and indented pattern surface can be reduced, thus shifting of spacer to a wrong position can be avoided. A method of manufacturing such LCD panel is also disclosed.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 15, 2008
    Assignee: HannStar Display Corp.
    Inventors: Yung-Ho Chang, Ching-Chao Chang, Chien-Feng Chen
  • Publication number: 20080143897
    Abstract: A liquid crystal display is disclosed. A first substrate and a second substrate correspond to each other. A plurality of first common electrode and a second common electrode are arranged on the first substrate. A plurality of first pixel electrodes and a second pixel electrode correspond to the first common electrodes and the second common electrode separately, and each of the pixel electrodes includes a plurality of electrode portions having a width l, tilted an angle ?, and separated by a distance w. A plurality of first color units and a second color unit are arranged on the second substrate and correspond to the first pixel electrodes and the second pixel electrode separately, wherein at least one of the width l, the distance w and the angle ? in the first color units is different from that in the second color unit.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Applicant: HANNSTAR DISPLAY CORP.
    Inventor: Ching Chao Chang
  • Publication number: 20080013126
    Abstract: The present invention provides an over driving circuit of a liquid crystal display is provided. The circuit comprises a buffer, a memory coupling with the buffer and a modifier coupling with the buffer, the memory and a signal line. This signal line is used to transfer a row number signal to the modifier. The modifier may generate a corrected gray level value to a pixel unit based on a gray level value of present frame from the buffer, a gray level value of previous frame from the memory and the row number signal.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 17, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Sheng-Pin Tseng, Ching-Chao Chang, Po-Sheng Shih
  • Publication number: 20060268214
    Abstract: A liquid crystal display (LCD) panel has a structure in which one of the thin film transistor (TFT) substrate and the color filter (CF) substrate has an indented pattern surface to contact or surround the end of the spacer, such that the friction between the spacers and indented pattern surface can be reduced, thus shifting of spacer to a wrong position can be avoided. A method of manufacturing such LCD panel is also disclosed.
    Type: Application
    Filed: May 27, 2005
    Publication date: November 30, 2006
    Inventors: Yung-Ho Chang, Ching-Chao Chang, Chien-Feng Chen
  • Patent number: 6950158
    Abstract: A transflective LCD device with a single cell gap. First and second pixel electrodes are formed on the lower substrate. First and second common electrodes are formed on an inner surface of the upper substrate. The first pixel electrodes and the first common electrodes are located in the reflective region. The second pixel electrodes and the second common electrodes are located in the transmissive region. A first orientation control window having a slit width “Src” is formed between the first common electrodes in an area corresponding to each first pixel electrode. A second orientation control window having a slit width “Stc” is formed between the second common electrodes, satisfying Src<Stc. The second orientation control window is in an area corresponding to each second pixel electrode. Accordingly, maximum light efficiency can be achieved in both reflective and transmissive modes.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: September 27, 2005
    Assignee: Hannstar Display Corp.
    Inventor: Ching Chao Chang
  • Publication number: 20030234901
    Abstract: A liquid crystal display has a pair of transparent substrates disposed opposite to each other sandwiching a liquid crystal layer therebetween, and the liquid crystal layer comprises a plurality of liquid crystal molecules and chiral components. A plurality of scanning electrodes and signal electrodes are patterned on the first substrate to define a plurality of pixel areas, wherein each pixel area has a first area and a second area. A plurality of switching devices are formed on the plurality of pixel areas and connected to the scanning electrodes, the signal electrodes and the pixel electrodes. A protrusive structure with a plurality of protrusions formed in each pixel area to generate a pretilt angle for liquid crystal molecules.
    Type: Application
    Filed: August 29, 2002
    Publication date: December 25, 2003
    Applicant: HannStar Display Corp.
    Inventors: Seok Lyul Lee, Ming-Tien Lin, Kei-Hsiung Yang, Ching-Chao Chang
  • Patent number: 6661493
    Abstract: A pixel area of an in-plane switching mode LCD (IPS-LCD) device has at least two common electrodes extending along Y-axis direction and at least a pixel electrode extending along Y-axis direction, in which the pixel electrode is disposed between the two adjacent common electrodes in parallel. The common electrode and the pixel electrode have the same profile that is connected by a first strip-shaped segment, a second strip-shaped segment, a third strip-shaped segment and a fourth strip-shaped segment in sequence. The first segment is not parallel to the second segment, the first segment is not parallel to the third segment, the second segment is not parallel to the fourth segment, and the third segment is not parallel to the fourth segment.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: December 9, 2003
    Assignee: Hannstar Display Corp.
    Inventors: Ching Chao Chang, Sakae Tanaka
  • Publication number: 20030095221
    Abstract: A pixel area of an in-plane switching mode LCD (IPS-LCD) device has at least two common electrodes extending along Y-axis direction and at least a pixel electrode extending along Y-axis direction, in which the pixel electrode is disposed between the two adjacent common electrodes in parallel. The common electrode and the pixel electrode have the same profile that is connected by a first strip-shaped segment, a second strip-shaped segment, a third strip-shaped segment and a fourth strip-shaped segment in sequence. The first segment is not parallel to the second segment, the first segment is not parallel to the third segment, the second segment is not parallel to the fourth segment, and the third segment is not parallel to the fourth segment.
    Type: Application
    Filed: April 15, 2002
    Publication date: May 22, 2003
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Ching Chao Chang, Sakae Tanaka
  • Publication number: 20030043338
    Abstract: A method of manufacturing a one drop fill liquid crystal display (ODF LCD) panel is disclosed. By separating sealant and black matrix using a space or photo spacer, the sealant can be hardened by applying ultraviolet light from the side of the color filter substrate without light shielding problems. Moreover, this also completely hardens the sealant, thereby preventing pollution of the liquid crystal material. This further improves the efficiency of the liquid crystal material.
    Type: Application
    Filed: March 8, 2002
    Publication date: March 6, 2003
    Inventors: Louis Liou, Tanaka Sakae, Ching Chao Chang
  • Patent number: 6411357
    Abstract: An electrode structure for a liquid crystal display includes a layer of pixel electrodes each having a herringbone-shaped structure, a passivation layer and a layer of common electrodes. The pixel electrodes are formed in parallel above the common electrodes. The herringbone-shaped structure of a pixel electrode has a predefined turning angle between 45 degrees to 90 degrees. The pixel electrode structure allows the liquid crystals in the display to rotate in two directions, clockwise and counterclockwise, to compensate for the color dispersion caused by a wide viewing angle.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: June 25, 2002
    Assignee: Industrial Technology Research Institute
    Inventors: Dai-Liang Ting, Lisen Chuang, Ching-Chao Chang