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).

  • Patent number: 8264629
    Abstract: The present invention provides a method for forming a pixel element. The method comprises: forming a first patterned metal layer within the pixel area; forming an insulation layer on the first patterned metal layer; forming a semiconductor layer on the insulation layer; patterning the semiconductor layer to form bend seed generation portion; and forming a second metal layer to connect the semiconductor layer.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: September 11, 2012
    Assignee: Hannstar Display Corp.
    Inventors: Tsu-Chiang Chang, Po-Yang Chen, Chao-Hui Wu, Po-Sheng Shih
  • Patent number: 8259084
    Abstract: An embedded type inductive input display device capable of increasing aperture ratios, that is realized through parallel-connecting at least two sensing devices of adjacent pixels separated by a gate line, and said sensing devices are connected to a switch transistor, such that said switch transistor is under control of said gate line, and sensor signals output by said sensing devices are transmitted to a read line for detecting touch-control events and positions. As such, the size of said sensing device utilized can be reduced, hereby effectively increasing aperture ratio of a panel, while maintaining a same magnitude of said sensor signals.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: September 4, 2012
    Assignee: HannStar Display Corporation
    Inventors: Hung-Chang Chang, Po-Yang Chen, Po-Sheng Shih
  • Patent number: 8248347
    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: Grant
    Filed: November 27, 2008
    Date of Patent: August 21, 2012
    Assignee: HannStar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Sweehan Jui-Hsien Yang
  • Patent number: 8237879
    Abstract: The present invention discloses a liquid crystal display containing a plurality of liquid crystals, a switching element, a plurality of alignment layers and a plurality of electrodes. The switching element comprises a gate, a drain and a source, and the drain/source forms a directional top portion. The gate and the source/drain form a lateral electric field. The alignment layer is disposed on the switching element and corresponds with the directional top portion. The plurality of liquid crystals are operated by the lateral electric field and located above the electrodes and the alignment layers. The alignment direction of plurality liquid crystals is following the directional top portion due to the enhancement of liquid crystal phase transition. Enhancement of the lateral electric field between the plurality of electrodes is helpful to reduce liquid crystal phase transition time.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: August 7, 2012
    Assignee: Hannstar Display Corp.
    Inventors: Sweehan J. H. Yang, Po-Sheng Shih
  • Patent number: 8228451
    Abstract: A liquid crystal display is provided. A pixel of the liquid crystal display includes a first pixel capacitor, a second pixel capacitor, a first transistor, and a second transistor. A first terminal and a second terminal of the first pixel capacitor are respectively coupled to the first transistor and a common voltage. A first terminal and a second terminal of the second pixel capacitor are respectively coupled to the second transistor and the common voltage. A voltage between the first and the second terminals of the first capacitor is differentiated from a voltage between the first and the second terminals of the second capacitor by modulating the common voltage. A coupling voltage of the first pixel capacitor is differentiated from a coupling voltage of the second pixel capacitor by modulating the common voltage. Thereby, the phenomenon of color wash-out is reduced.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: July 24, 2012
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Patent number: 8218097
    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: Grant
    Filed: April 9, 2008
    Date of Patent: July 10, 2012
    Assignee: HannStar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Hsuan-Lin Pan, Jiunn-Shyong Lin
  • Patent number: 8207921
    Abstract: A couple of scanning signals are applied to a pixel on the liquid crystal display panel. The scanning signals allows voltage to be separately written into a control electrode and a pixel electrode during two adjacent horizontal scanning periods or a vertical scanning period, and a coupled voltage is induced on the control electrode due to the potential variation of the pixel electrode during the next horizontal scanning period.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 26, 2012
    Assignee: Hannstar Display Corporation
    Inventors: Seok Lyul Lee, Po Sheng Shih
  • Publication number: 20120113342
    Abstract: A liquid crystal display is provided. A pixel of the liquid crystal display includes a first pixel capacitor, a second pixel capacitor, a first transistor, and a second transistor. A first terminal and a second terminal of the first pixel capacitor are respectively coupled to the first transistor and a common voltage. A first terminal and a second terminal of the second pixel capacitor are respectively coupled to the second transistor and the common voltage. A voltage between the first and the second terminals of the first capacitor is differentiated from a voltage between the first and the second terminals of the second capacitor by modulating the common voltage. A coupling voltage of the first pixel capacitor is differentiated from a coupling voltage of the second pixel capacitor by modulating the common voltage. Thereby, the phenomenon of color wash-out is reduced.
    Type: Application
    Filed: January 18, 2012
    Publication date: May 10, 2012
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Publication number: 20120115264
    Abstract: The present invention provides a method for forming a pixel element. The method comprises: forming a first patterned metal layer within the pixel area; forming an insulation layer on the first patterned metal layer; forming a semiconductor layer on the insulation layer; patterning the semiconductor layer to form bend seed generation portion; and forming a second metal layer to connect the semiconductor layer.
    Type: Application
    Filed: January 19, 2012
    Publication date: May 10, 2012
    Inventors: Tsu-Chiang Chang, Po-Yang Chen, Chao-Hui Wu, Po-Sheng Shih
  • Publication number: 20120092282
    Abstract: A positioning method and a driving apparatus of a touch panel are provided. The touch panel includes a conductive layer with anisotropic conductivity, a plurality of first electrodes and a plurality of second electrodes. The first electrodes and the second electrodes are respectively disposed on a first side and a second side of the conductive layer. The first electrodes and the second electrodes are sensed to obtain a plurality of sensing values. A first relative extreme portion at least having a relative extreme is defined among the first electrodes. A second relative extreme portion at least having a relative extreme is defined among the second electrodes. A ratio of sensing values is calculated according to the first relative extreme portion and the second relative extreme portion. A position of a touch point on the touch panel in a first axial direction is calculated with the ratio of sensing values.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 19, 2012
    Applicant: Chimei Innolux Corporation
    Inventors: Po-Yang CHEN, Po-Sheng SHIH, Chien-Yung CHENG
  • Publication number: 20120062512
    Abstract: A driving method and apparatus of a touch panel are provided. The touch panel includes a conductive layer with anisotropic conductivity. The method includes the following steps. An electrode pair is selected one by one in a plurality of electrode pairs. Each of the electrode pairs includes a first electrode and a second electrode. The first electrodes are disposed on a first side of the conductive layer, and the second electrodes are disposed on a second side of the conductive layer. When an electrode pair of the electrode pairs is selected, the first electrode and the second electrode of the selected electrode pair are driven one by one.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: CHIMEI INNOLUX CORPORATION
    Inventors: CHIEN-YUNG CHENG, PO-SHENG SHIH, PO-YANG CHEN
  • Publication number: 20120056851
    Abstract: A method and a driving apparatus for identifying a sensing value of a touch panel are provided. The method includes sensing a plurality of electrodes of the touch panel to obtain raw data and baseline data of each electrode, wherein an electrode Si denotes an ith electrode of the electrodes in the touch panel. A sensing value of the electrode Si is calculated in accordance with the raw data and the baseline data of the electrode Si. When sensing values of all electrodes Si are smaller than a threshold value, the baseline data of the electrode Si is updated in accordance with the raw data of the electrode Si. When a sensing value of any one electrode Si of the electrodes is larger than the threshold value, the baseline data of the electrodes is suspended from being updated.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 8, 2012
    Applicant: CHIMEI INNOLUX CORPORATION
    Inventors: PO-YANG CHEN, PO-SHENG SHIH, CHIEN-YUNG CHENG
  • Patent number: 8125594
    Abstract: A pixel structure of a liquid crystal display includes a substrate, a light shielding element, a first data line, a second data line and a pixel electrode. The light shielding element is formed on the substrate. The first and second data lines are formed along the light shielding element, and the second data line overlaps with portions of the light shielding element. The pixel electrode overlaps with portions of the first data line and the light shielding element without overlapping with the second data line.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: February 28, 2012
    Assignee: Hannstar Display Corp.
    Inventors: Tsu Chiang Chang, Po Sheng Shih, Po Yang Chen, Chao Hui Wu
  • Patent number: 8115204
    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: Grant
    Filed: August 19, 2008
    Date of Patent: February 14, 2012
    Assignee: Hannstar Display Corp.
    Inventors: Po-Yang Chen, Po-Sheng Shih, Tsu-Chiang Chang
  • Publication number: 20110292464
    Abstract: A method for reproducing a document is provided. The method includes the following steps: scanning a front side and a back side of an original and accordingly producing a front side image and a back side image; determining a size of the original; comparing the size of the original with a page size; and if the size of the original is determined smaller than one half of the page size, producing one-page image data representing the front side image and the back side image on one single page. An apparatus for reproducing the document is also disclosed.
    Type: Application
    Filed: May 6, 2011
    Publication date: December 1, 2011
    Inventor: Po-Sheng SHIH
  • Patent number: 8063877
    Abstract: A driving circuit for an input display is provided. The driving circuit includes first and second data lines disposed in parallel with each other, first and second gate lines disposed in parallel with each other and intersected with the first and the second data lines, so as to form a pixel of the input display thereby, a common line disposed between the first and the second gate lines, a first switching element having a first gate electrode connected to the first gate line, a second switching element having a second gate electrode connected to the second gate line, and a third switching element connected between the common line and the second switching element and operating in a forward-bias state. The first and second gate lines operate in sequence and the first and second switching elements are respectively activated by the first and second gate lines in sequence.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: November 22, 2011
    Assignee: HannStar Display Corporation
    Inventors: Po-Sheng Shih, Po-Yeng Chen
  • Patent number: 8059244
    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: Grant
    Filed: August 19, 2008
    Date of Patent: November 15, 2011
    Assignee: HannStar Display Corp.
    Inventors: Po-Sheng Shih, Tsu-Chiang Chang, Po-Yang Chen, Chao-Hui Wu
  • Patent number: 8054271
    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: Grant
    Filed: June 18, 2007
    Date of Patent: November 8, 2011
    Assignee: Hannstar Display Corp.
    Inventors: Hsuan-Lin Pan, Po-Sheng Shih
  • Patent number: 8035588
    Abstract: A liquid crystal display panel and its driving method are provided. The liquid crystal display panel includes: a plurality of scanning lines and data lines; a pixel matrix having a plurality of pixels which are formed in the intersections of the scanning lines and the data lines; and each of the pixels having: a pixel electrode; a control electrode; a first thin film transistor having a gate electrode connected to the scanning line, a first electrode connected to the data line and a second electrode connected to the pixel electrode; a second thin film transistor having a gate electrode connected to another adjacent scanning line, a first electrode connected to another adjacent data line and a second electrode connected to the control electrode; and wherein one of the two most outside data lines of the pixel matrix is called a boundary data line, and an auxiliary line is disposed between the boundary data line and the pixel electrode adjacent to the boundary data line.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: October 11, 2011
    Assignee: HannStar Display Corp.
    Inventors: Hsuan-Lin Pan, Po-Sheng Shih
  • Publication number: 20110227863
    Abstract: A touch panel and a differential detection method thereof are disclosed. A controller provides a driving signal to the i-th scan electrode. During providing the driving signal to the i-th scan electrode, the controller senses the feature difference value between two neighbouring sensing electrodes within the plural sensing electrodes, and senses the feature difference value ?Ci between the k-th sensing electrode within the sensing electrodes and a reference feature value, in which the feature difference values between the j-th sensing electrode and the (j+1)-th sensing electrode is represented by ?C(i,j). The controller set the feature value of a base sensing point within a plurality of sensing points of the touch panel as a base feature value, and use the base feature value, the feature difference values ?Ci and the feature difference values ?C(i,j) to calculate the feature values of the sensing points.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 22, 2011
    Applicant: CHIMEI INNOLUX CORPORATION
    Inventors: CHIEN-YUNG CHENG, PO-SHENG SHIH, PO-YANG CHEN