Patents by Inventor Po-Sheng Shih

Po-Sheng Shih 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).

  • Pixel structure for liquid crystal display
    Patent number: 7583348
    Abstract: The present invention builds a metal electrode that is controlled by the common electrode in each pixel cell. During operation, a voltage is first applied to this metal electrode to transform the liquid crystal molecule over this metal electrode from the splay state to the bend state. Next, a voltage is applied to the pixel electrode to transform the liquid crystal molecule in the whole pixel region from the splay state to the bend state.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: September 1, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Kei-Hsiung Yang, Po-Sheng Shih
  • FIELD SEQUENTIAL LCD DRIVING METHOD
    Publication number: 20090207117
    Abstract: The present invention discloses a driving method for a liquid crystal display. The liquid crystal display has a plurality of pixels arranged in a matrix form. The method includes the following steps. The first step is to write black data to the pixels using an over driving voltage. The second step is to select partial of the pixels or all pixels to write color data based on a color image signal. The third step is to turn on the corresponding backlight based on the color data.
    Type: Application
    Filed: November 27, 2008
    Publication date: August 20, 2009
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Po-Yang CHEN, Po-Sheng SHIH, Sweehan Jui-Hsien YANG
  • Pixel structure for LCD with embedded touch screen
    Patent number: 7573459
    Abstract: A pixel structure for an liquid crystal display (LCD) with an embedded touch screen is provided.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: August 11, 2009
    Assignee: HannStar Display Corp.
    Inventors: Po-Sheng Shih, Bo-Yang Chen
  • LIQUID CRYSTAL DISPLAY WITH HIGH APERTURE RATIO
    Publication number: 20090141228
    Abstract: A thin film transistor liquid crystal display includes a substrate, a first conductive line disposed on the substrate, an inorganic insulating layer covering the substrate, a transparent electrode attached to the inorganic insulating layer, a second conductive line crossing the first conductive line, an inorganic passivation layer covering the substrate and a pixel electrode attached to the inorganic passivation layer and overlapping the transparent electrode and a part of the first conductive line.
    Type: Application
    Filed: August 19, 2008
    Publication date: June 4, 2009
    Inventors: Po-Sheng Shih, Tsu-Chiang Chang, Po-Yang Chen, Chao-Hui Wu
  • LIQUID CRYSTAL DISPLAY
    Publication number: 20090128724
    Abstract: The present invention provides a liquid crystal display with a plurality of pixel units. Each pixel unit includes two sub-pixels, and each sub-pixel includes a thin film transistor, a liquid crystal capacitor and a storage capacitor. One of the storage capacitors is a tunable capacitor. The tunable capacitor includes a first conductive layer, an insulating layer, a semiconductor layer with a area Asem, and a second metal layer. The second conductive layer has a first region with a area Acon overlapping with the semiconductor layer. The area Acon is less than the area Asem.
    Type: Application
    Filed: April 9, 2008
    Publication date: May 21, 2009
    Inventors: Po-Yang Chen, Po-Sheng Shih, Hsuan-Lin Pan, Jiunn-Shyong Lin
  • Input display
    Patent number: 7535072
    Abstract: An input display is provided in the present invention. The input display includes a thin film transistor (TFT) and a light blocking layer. The TFT includes a low-field electrode, a high-field electrode connected to the low-field electrode with a connecting section, and a field-effect area positioned on the connecting section and connected to the high-field electrode, wherein a PN junction field is formed in the field-effect area when the TFT is switched off. The light blocking layer corresponds to the high-field electrode and hides the field-effect area from all incident light from the TFT.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: May 19, 2009
    Assignee: Hannstar Display Corporation
    Inventor: Po-Sheng Shih
  • PIXEL DRIVING METHOD
    Publication number: 20090115761
    Abstract: A pixel driving method for a display device is provided. The display device includes at least a first and a second pixels coupled to a signal terminal. The first pixel is located farther from the signal terminal than the second pixel, and each pixel is driven during a time period, which includes a first operation period and a second operation period. The pixel driving method includes steps of generating a compensation voltage and an ideal voltage according to a gray scale value of the each pixel, charging/discharging the each pixel by the compensation voltage corresponding to the each pixel during the respective first operation period, and charging/discharging the each pixel by the ideal voltage corresponding to the each pixel during the respective second operation period. The first operation period for charging/discharging the first pixel is longer than that for charging/discharging the second pixel.
    Type: Application
    Filed: February 21, 2008
    Publication date: May 7, 2009
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Po-Sheng Shih, Hsuan-Lin Pan
  • PIXEL DRIVING METHOD, PIXEL DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY USING THEREOF
    Publication number: 20090115750
    Abstract: The present invention provides a pixel driving method for a liquid crystal display. The pixel includes a storage capacitor and a liquid crystal capacitor. The pixel driving method includes steps of: providing a common voltage signal to a liquid crystal capacitor, and providing a bias signal to a storage capacitor wherein the bias signal is synchronized with the common voltage signal and the amplitude of the bias signal is larger than that of the common voltage signal.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 7, 2009
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Po-Yang CHEN, Po-Sheng SHIH, Tsu-Chiang CHANG
  • Driving circuit and method for liquid crystal display panel
    Patent number: 7528815
    Abstract: A driving circuit and a driving method can drive an LCD panel to display imagines. Storages capacitors of pixels connected with each scanning line are connected with an AC signal source. The AC signal source can vary the potential of its signal in harmony with the polarity inversion of a pixel during a vertical scanning period. Due to a capacitively coupled effect, a coupled voltage induced by the variation in the potential of the signal changes the potential of a pixel electrode so as to speed up the alternation in the electrical field of an LC capacitor.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: May 5, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Po-Sheng Shih, Seok-Lyul Lee
  • DISPLAY DEVICE AND RELATED POSITIONING METHOD
    Publication number: 20090109359
    Abstract: A display device detects a touched position by making use of an inducing element and a counter electrode. The voltage produced by the counter electrode is able to affect a conductivity of the channel of the inducing element corresponding to the touched position. The inducing element and a readout circuit are disposed on a substrate of the display device. The counter electrode and a shielding element are both corresponded to the inducing element. The channel of the inducing element corresponding to the touched position changes the conductivity due to the voltage produced by the corresponding counter electrode, and an inducing signal is then generated. The inducing signal is furnished to the readout circuit for signal processing, and a readout signal is generated for analyzing the touched position.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 30, 2009
    Inventors: Po-Sheng Shih, Po-Yang Chen, Hsuan-Lin Pan, Kei-Hsiung Yang
  • DISPLAY DEVICE
    Publication number: 20090109186
    Abstract: A display device is disclosed by the present invention and is constituted by a substrate, an inducing element, and a counter electrode. The substrate comprises a pixel electrode and a first conductive line. A counter substrate faces the substrate. The inducing element is disposed on the substrate and comprises a passivation layer, which is electrically connected to the first conductive line and is disconnected to the pixel electrode. The counter electrode is disposed between the substrate and the counter substrate, which is corresponding to the inducing element with a variable gap less or equal than 1 ?m between the passivation layer and the counter electrode.
    Type: Application
    Filed: June 25, 2008
    Publication date: April 30, 2009
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Hsuan-Lin PAN, Po-Sheng SHIH, Kei-Hsiung YANG, Po-Yang CHEN
  • METHOD FOR DRIVING PIXELS OF A DISPLAY PANEL
    Publication number: 20090102820
    Abstract: A method for driving pixels of a display panel is provided. The display panel includes a first gate line coupled to a gate of a first-switch transistor, wherein a source of the first-switch transistor is coupled to a liquid crystal capacitor and a first-storage capacitor. The liquid crystal capacitor includes a pixel electrode and a common electrode. A terminal of the first-storage capacitor is coupled to a second gate line. First, a first modulation signal is provided to the common electrode. Next, the first-switch transistor is turned on by the first gate line. Next, a second modulation signal is provided to the second gate line after the first-switch transistor is turned on. Wherein, the second modulation signal enables a second-switch transistor coupled to the second gate line to operate in the cut-off region. And the first and second modulation signals are in phase.
    Type: Application
    Filed: June 25, 2008
    Publication date: April 23, 2009
    Applicant: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Tsu-Chiang Chang
  • LIQUID CRYSTAL DISPLAY
    Publication number: 20090066901
    Abstract: A liquid crystal display is provided. The liquid crystal display including a first substrate having thereon a plurality of gate lines and data lines intersected to each other, so as to form a pixel surrounded thereby, a second substrate counter to the substrate, a common electrode disposed on the first substrate and having a first portion and a slit corresponding to one of the data lines and a second portion located inside the pixel, and a pixel electrode disposed between the first portion and the second portion of the common electrode, and adjacent to the first portion. The first portion of the common electrode and the pixel electrode have a first distance d1, the second portion of the common electrode and the pixel electrode have a second distance d2, and the first distance d1 is not equivalent to the second distance d2.
    Type: Application
    Filed: April 10, 2008
    Publication date: March 12, 2009
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Jiunn-Shyong Lin, Po-Sheng Shih, Kei-Hsiung Yang, Tai-Shun Liao
  • PHOTO ELEMENTS AND IMAGE DISPLAYS
    Publication number: 20090051645
    Abstract: An exemplary embodiment of a photo element comprises a first line, a second line, a switch transistor, and a photo transistor. The switch transistor has a first electrode, a second electrode, and a first gate. One of the first electrode and the second electrode is electrically coupled to the first line, and the first gate is electrically coupled to the second line. The photo transistor is electrically coupled to the switch transistor and arranged to detect light. The photo transistor has a third electrode, a fourth electrode, and a second gate. At least one of the switch transistor and the photo transistor is an asymmetric transistor.
    Type: Application
    Filed: August 19, 2008
    Publication date: February 26, 2009
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Po-Yang CHEN, Po-Sheng SHIH, Tsu-Chiang CHANG
  • DISPLAY DEVICE AND RELATED POSITIONING METHOD
    Publication number: 20090051644
    Abstract: A display device detects a touched position by making use of a inducing element and a counter electrode. The voltage produced by the counter electrode is able to affect a conductivity of the channel of the inducing element corresponding to the touched position. The inducing element and a readout circuit are disposed on a substrate of the display device. The counter electrode and a shielding element are both corresponded to the inducing element. The channel of the inducing element corresponding to the touched position changes the conductivity due to the voltage produced by the corresponding counter electrode, and an inducing signal is then generated. The inducing signal is furnished to the readout circuit for signal processing, and a readout signal is generated for analyzing the touched position.
    Type: Application
    Filed: October 30, 2007
    Publication date: February 26, 2009
    Inventors: Po-Sheng Shih, Hsuan-Lin Pan, Po-Yang Chen
  • PIXEL STRUCTURE FOR LIQUID CRYSTAL DISPLAY
    Publication number: 20090033816
    Abstract: The present invention builds a metal electrode that is controlled by the common electrode in each pixel cell. During operation, a voltage is first applied to this metal electrode to transform the liquid crystal molecule over this metal electrode from the splay state to the bend state. Next, a voltage is applied to the pixel electrode to transform the liquid crystal molecule in the whole pixel region from the splay state to the bend state.
    Type: Application
    Filed: October 7, 2008
    Publication date: February 5, 2009
    Applicant: Hannstar Display Corporation
    Inventors: Kei-Hsiung Yang, Po-Sheng Shih
  • Thin film transistor LCD structure and driving method thereof
    Patent number: 7463232
    Abstract: The video data output from the dot-inversion driver is re-arranged in the present invention. According this re-arranged method, the video data output from the even data lines or odd data lines is delayed for one scan line scan time. Then, the re-arranged video data are applied to the liquid crystal display structure whose thin film transistors connected with the same scan line are arranged in alternatingly up-down form to store row-inversion driving data in the pixel region.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: December 9, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Yong-Ho Lee, Seob Shin, Po-Sheng Shih, Jia-Shyong Cheng
  • Pixel structure for liquid crystal display
    Patent number: 7450209
    Abstract: In accordance with the present invention, a mteal electrode or a common electrode line (both called as Vbias electrode) is built in the pixel region. Holes passing through the pixel electrode are formed in the positions corresponding to the mteal electrode or common electrode line (both called as Vbias electrode) so as to reduce the crosswise electrical field. The liquid crystal molecule in the whole pixel region is in a splay state.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: November 11, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Zhao-Hui Wu, Po-Sheng Shih, Kei-Hsiung Yang
  • METHOD OF DRIVING A PIXEL AND LIQUID CRYSTAL DISPLAY PANEL IMPLEMENTING THE METHOD
    Publication number: 20080272990
    Abstract: The invention provides methods of driving a pixel and liquid crystal display panels implementing the methods. The invention generates an ideal data voltage corresponding to a gray level of the pixel, and generates a compensated data voltage corresponding to the gray level according to a polarity change of the pixel. The charging period of the pixel is divided into a first charging time segment and a second charging time segment. The invention charges the pixel by the compensated data voltage during the first charging time segment, and charges the pixel by the compensated data voltage during the second charging time segment.
    Type: Application
    Filed: June 18, 2007
    Publication date: November 6, 2008
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Hsuan-Lin Pan, Po-Sheng Shih
  • METHOD OF DRIVING A DISPLAY PANEL
    Publication number: 20080266274
    Abstract: A method for driving a display panel is provided. First, a first gate line is enabled and a first data is provided to a sub-pixel coupled to the first gate line at a first time duration in a frame period. Next, the first gate line is enabled and a second data is provided to the sub-pixel coupled to the first gate line at a second time duration in the frame period. Herein, the first time duration precedes the second time duration. Further, the second data is a display data of the sub-pixel coupled to the first gate line, and the first data is a display data of a sub-pixel coupled to a second gate line.
    Type: Application
    Filed: August 9, 2007
    Publication date: October 30, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventor: Po-Sheng Shih