Patents by Inventor Chih-Ming Chang

Chih-Ming 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: 7948596
    Abstract: A liquid crystal display device comprising: (i) a first substrate and a second substrate positioned apart to define a cell gap, (ii) a liquid crystal layer positioned in the cell gap, and (iii) a plurality of gate lines arranged in a first direction and a plurality of data lines arranged in a second direction substantially perpendicular to the first direction to define a plurality of pixels, each pixel having a first portion and a second portion, and comprising: (a) a first dielectric layer formed on the first substrate, (b) a first pixel electrode formed on the first dielectric layer, (c) a second dielectric layer formed to at least partially cover the first pixel electrode, (d) a second pixel electrode formed on the second dielectric layer such that the second pixel electrode is connectable to the first pixel electrode, and (e) a common electrode formed on the second dielectric layer.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: May 24, 2011
    Assignee: AU Optronics Corporation
    Inventors: Seok-Lyul Lee, Tun-Chun Yang, Chih-Ming Chang
  • Publication number: 20110115996
    Abstract: In a transflective liquid crystal display having a transmission area and the reflection area, the transmissive electrode is connected to a switching element to control the liquid crystal layer in the transmission area, and the reflective electrode is connected to the switching element via a separate capacitor to control the liquid crystal layer in the reflection area. The separate capacitor is used to shift the reflectance in the reflection area toward a higher voltage end in order to avoid the reflectance inversion problem. In addition, an adjustment capacitor is connected between the reflective electrode and a different common line. The adjustment capacitor is used to reduce or eliminate the discrepancy between the gamma curve associated with the transmittance and the gamma curve associated with the reflectance.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 19, 2011
    Inventors: Ching-Huan Lin, Jenn-Jia Su, Chih-Ming Chang
  • Patent number: 7942999
    Abstract: A fabrication method of a rigid-flex circuit board is described as follows. Firstly, a flexible circuit board and at least a cover layer are provided. The cover layer covers a surface of the flexible circuit board. A protection layer is then formed on the cover layer. Next, a substrate is laminated to the surface of the flexible circuit board. The substrate has a conductive layer and a prepreg disposed between the conductive layer and the cover layer. The prepreg has an opening for accommodating the protection layer. Thereafter, the conductive layer is patterned for forming a patterned conductive layer. Afterwards, the protection layer is removed.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: May 17, 2011
    Assignee: Unimicron Technology Corp.
    Inventors: Chih-Ming Chang, Hsin-En Chung, Yu-Feng Tseng
  • Publication number: 20110096283
    Abstract: An LCD panel includes a first substrate, a second substrate, alignment protrusions and a liquid crystal layer between the first substrate and the second substrate. The first substrate includes pixel units arranged in an array. Each of the pixel units has at least one reflection area and one transmittance area. The first substrate has concaves in the reflection areas. The second substrate is above the first substrate. The first substrate or the second substrate has at least one padding layer in the reflection area. The alignment protrusions having approximately the same height are disposed on the second substrate and located in centers of each of the reflections and the transmittance areas. In the reflection area, a group of the alignment protrusions are in the concaves to keep a gap from the first substrate. The other group of the alignment protrusions outside of the concaves contact with the first substrate directly.
    Type: Application
    Filed: December 23, 2010
    Publication date: April 28, 2011
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7928528
    Abstract: The invention provides an LCD panel with main slits corresponding to alignment protrusions. The gate lines are shielded by the electrode portion and do not overlap the main slits. Because the gate line and the major slits do not overlap, the liquid crystal molecule arrangement of the liquid crystal layer is not affected by the operating voltage of the gate line.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: April 19, 2011
    Assignee: Au Optronics Corp.
    Inventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7929093
    Abstract: A pixel structure including an active device and a pixel electrode is provided. The pixel electrode is electrically connected with the active device and has a plurality of alignment domains. Each of the alignment domains of the pixel electrode has one group of alignment slits parallel with one another, wherein each group of the alignment slits includes a plurality of first alignment slits with a first length and the first alignment slits are majority of each group of the alignment slits. At least one group of the alignment slits includes at least a second alignment slit with a second length longer than the first length of the first alignment slits.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 19, 2011
    Assignee: Au Optronics Corporation
    Inventors: Sung-Kao Liu, Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Publication number: 20110057680
    Abstract: An active device array includes a plurality of scan lines, a plurality of data lines, a plurality of pixel structures, a first testing circuit, a second testing circuit, a third testing circuit and a fourth testing circuit. Each of the pixel structures is connected to one of the scan lines and one of the data lines. The first testing circuit is electrically connected to the odd scan lines; the second testing circuit is electrically connected to the (4n+1)th scan lines wherein n is zero or a positive integer; the third testing circuit is electrically connected to the even scan lines; the fourth testing circuit is electrically connected to the (4n+2)th scan lines.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 10, 2011
    Applicants: DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY CO., LTD., WINTEK CORPORATION
    Inventors: Chih-Chang Wang, Chih-Ming Chang, Chun-Chieh Wu
  • Patent number: 7903213
    Abstract: A liquid crystal display panel and a liquid crystal display device incorporating the same are provided. The liquid crystal display panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a first base, a dielectric layer and a storage capacitor. The storage capacitor includes a reflective electrode. The dielectric layer covers at least part of the storage capacitor. The second substrate is substantially paralleled to the first substrate. The second substrate includes a second base, a black matrix and a common electrode. The black matrix corresponds to the storage capacitor. The black matrix includes an opening corresponding to the reflective electrode. The opening is provided to let an outside light enter into the liquid crystal display panel such that the reflective electrode reflects the outside light to provide a light source to the liquid crystal display panel.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: March 8, 2011
    Assignee: Au Optronics Corp.
    Inventors: Ching-Yu Tsai, Mu-Jen Su, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7884901
    Abstract: An LCD panel includes a first substrate, a second substrate, alignment protrusions and a liquid crystal layer between the first substrate and the second substrate. The first substrate includes pixel units arranged in an array. Each of the pixel units has at least one reflection area and one transmittance area. The first substrate has concaves in the reflection areas. The second substrate is above the first substrate. The first substrate or the second substrate has at least one padding layer in the reflection area. The alignment protrusions having approximately the same height are disposed on the second substrate and located in centers of each of the reflections and the transmittance areas. In the reflection area, a group of the alignment protrusions are in the concaves to keep a gap from the first substrate. The other group of the alignment protrusions outside of the concaves contact with the first substrate directly.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: February 8, 2011
    Assignee: Au Optronics Corporation
    Inventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7872713
    Abstract: A pixel structure disposed on a substrate and electrically connected to a scan line and a data line is provided. The pixel structure has a reflective area and includes a common line, a semiconductor lower electrode, an upper electrode, a patterned dielectric layer, a reflective electrode and an active device. The semiconductor lower electrode electrically connected to the common line is disposed on the substrate within the reflective area. The upper electrode is disposed above and electrically isolated from the semiconductor lower electrode. The patterned dielectric layer with the micro-bumps is disposed on the upper electrode and exposes a part of the upper electrode. The reflective electrode is disposed on the patterned dielectric layer and the part of the upper electrode. Besides, the reflective electrode is electrically connected to the upper electrode. The active device is electrically connected to the scan line, the data line and the reflective electrode.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: January 18, 2011
    Assignee: Au Optronics Corporation
    Inventors: Cho-Yan Chen, Seok-Lyul Lee, Tun-Chun Yang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7872723
    Abstract: An LCD panel including a first substrate, a second substrate disposed above the first substrate, a plurality of signal lines disposed on the first substrate, and a plurality of sub-pixel sets arranged between the first substrate and the second substrate. Each sub-pixel set includes a plurality of sub-pixels electrically connected to the signal lines, each sub-pixel set has a spacer disposed between the first substrate and the second substrate, and each spacer form a region in each corresponding sub-pixel set, wherein the area of the sub-pixel with the region is substantially greater than the area of other sub-pixels, and the effective display area of the sub-pixel with the region is substantially equal to the effective display area of other sub-pixels.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 18, 2011
    Assignee: Au Optronics Corporation
    Inventors: Shih-Chyuan Fan-Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7868976
    Abstract: In a transflective liquid crystal display having a transmission area and the reflection area, the transmissive electrode is connected to a switching element to control the liquid crystal layer in the transmission area, and the reflective electrode is connected to the switching element via a separate capacitor to control the liquid crystal layer in the reflection area. The separate capacitor is used to shift the reflectance in the reflection area toward a higher voltage end in order to avoid the reflectance inversion problem. In addition, an adjustment capacitor is connected between the reflective electrode and a different common line. The adjustment capacitor is used to reduce or eliminate the discrepancy between the gamma curve associated with the transmittance and the gamma curve associated with the reflectance.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: January 11, 2011
    Assignee: AU Optronics Corporation
    Inventors: Ching-Huan Lin, Jenn-Jia Su, Chih-Ming Chang
  • Patent number: 7867908
    Abstract: A method of fabricating a substrate includes following steps. First, a metallic panel having a first surface and a second surface is provided. A first half-etching process is carried out to etch the first surface of the metallic panel to a first depth so that a first patterned metallic layer is formed on the first surface. Next, a first insulating material is deposited into gaps in the first patterned metallic layer to form a first insulator. Thereafter, a second half-etching process is carried out to etch the second surface of the metallic panel to a second depth and expose at least a portion of the first insulator so that a second patterned metallic layer is formed on the second surface. The first depth and the second depth together equal the thickness of the metallic panel.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: January 11, 2011
    Assignee: Unimicron Technology Corp.
    Inventors: Tzyy-Jang Tseng, Chih-Ming Chang, Cheng-Po Yu, Chung W. Ho
  • Publication number: 20100321839
    Abstract: An over-current protection device for multiple high-voltage motive devices is provided. The over-current protection device includes a comparison module and a logic operation module. The comparison module receives a plurality of voltages generated from a plurality of operating currents of a plurality of high-voltage motive devices and respectively compares the voltages with at least one reference voltage to generate a plurality of comparison results, wherein the high-voltage motive devices are solenoids, electronic clutches, or a combination of solenoids and electronic clutches. The logic operation module receives the comparison results and generates at least one control signal for a plurality of high-voltage motive device driving circuits according to the comparison results. The high-voltage motive device driving circuits respectively drive the high-voltage motive devices according to the control signal.
    Type: Application
    Filed: August 31, 2010
    Publication date: December 23, 2010
    Applicants: Cal-Comp Electronics & Communications Company Limited, Kinpo Electronics, Inc.
    Inventors: Chih-Ming Chang, Ju-Chou Chen
  • Patent number: 7832698
    Abstract: A mounting base includes two fixing plates movably connected to each other via a four-bar mechanism, which consist of four fixing arms and is controllable via an adjusting rod to reduce one diagonal thereof, so that the two fixing plates located at two opposite ends of the other diagonal of the four-bar mechanism are moved outward to firmly press against two opposite inner wall surfaces of a swimming pool gutter, enabling the mounting base to be conveniently and safely fixed to any desired point along a swimming pool perimeter without spoiling the swimming pool. A carrier plate is associated with the adjusting rod for a water activity facility to mount thereon. A second carrier plate perpendicular to the first carrier plate may be associated with the fixing plates via another two pivotally connected fixing arms, so that the mounting base is usable in two different directions.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: November 16, 2010
    Inventor: Chih-Ming Chang
  • Patent number: 7830482
    Abstract: A method for manufacturing a transflective LCD panel having a transmissive region and a reflective region includes steps of providing an upper substrate and a lower substrate in parallel, forming a first alignment film on the upper substrate, forming a reflective layer on the reflective region of the lower substrate, forming an first insulating layer to cover the reflective layer and the lower substrate, forming a second insulating layer to cover the first insulating layer, forming positive and negative driving electrodes wrapped in the second insulating layer, forming a coplanar second alignment film to cover the second insulating layer, packaging the upper substrate and the lower substrate, and filling liquid crystal molecules.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: November 9, 2010
    Assignee: Au Optronics Corporation
    Inventors: Tzu-Yuan Lin, Chun-Hung Chiang, Fu-Cheng Hsieh, Po-Chang Wu, Ren-Hung Huang, Jin-Jei Wu, Chih-Ming Chang, Po-Lun Chen
  • Publication number: 20100277662
    Abstract: The invention provides an LCD panel with main slits corresponding to alignment protrusions. The gate lines are shielded by the electrode portion and do not overlap the main slits. Because the gate line and the major slits do not overlap, the liquid crystal molecule arrangement of the liquid crystal layer is not affected by the operating voltage of the gate line.
    Type: Application
    Filed: July 19, 2010
    Publication date: November 4, 2010
    Applicant: AU OPTRONICS CORP.
    Inventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Publication number: 20100268977
    Abstract: An apparatus for accessing a memory is provided, and comprises a first device, a second device, an adjusting unit, a buffer and a memory. The first device operates at a first clock. The second device operates at a second clock. The buffer reads data from the second device to be written to the memory unit and reads from the memory unit to be read by the first device. The adjusting unit masks a portion of pulses of the first clock to generate an adjusted clock, wherein the first device reads the buffer according to the adjusted clock. The apparatus for accessing a memory is a video processor, and the first device and the second device are an input unit and an output unit of the video processor.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 21, 2010
    Applicant: HIMAX MEDIA SOLUTIONS, INC.
    Inventor: Chih-Ming Chang
  • Publication number: 20100225862
    Abstract: An LCD panel including a first substrate, a second substrate disposed above the first substrate, a plurality of signal lines disposed on the first substrate, and a plurality of sub-pixel sets arranged between the first substrate and the second substrate. Each sub-pixel set includes a plurality of sub-pixels electrically connected to the signal lines, each sub-pixel set has a spacer disposed between the first substrate and the second substrate, and each spacer form a region in each corresponding sub-pixel set, wherein the area of the sub-pixel with the region is substantially greater than the area of other sub-pixels, and the effective display area of the sub-pixel with the region is substantially equal to the effective display area of other sub-pixels.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 9, 2010
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Shih-Chyuan Fan-Jiang, Ching-Huan Lin, Chih-Ming Chang
  • Patent number: 7781857
    Abstract: The invention provides an LCD panel with main slits corresponding to alignment protrusions. The gate lines are shielded by the electrode portion and do not overlap the main slits. Because the gate line and the major slits do not overlap, the liquid crystal molecule arrangement of the liquid crystal layer is not affected by the operating voltage of the gate line.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: August 24, 2010
    Assignee: AU Optronics Corp.
    Inventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang