Patents by Inventor Kei-Hsiung Yang

Kei-Hsiung Yang 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: 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
  • Publication number: 20080266492
    Abstract: A light emitting optical film at least including a substrate, an alignment layer and a polarized light emitting liquid crystal film is provided, in which the polarized light emitting liquid crystal film includes liquid crystal and light-emitting dye. The alignment layer is located on one side of the substrate, and the polarized light emitting liquid crystal film is located on the alignment layer. The light emitting optical film can be applied to polarizing film, phase retardation film or color filter. Moreover, it is unnecessary to use conventional backlight module because overall arrangement of liquid crystal can fully emit uniform polarized light, whereby greatly reducing cost of conventional backlight module.
    Type: Application
    Filed: September 4, 2007
    Publication date: October 30, 2008
    Applicants: TAIWAN TFT LCD ASSOCIATION, CHUNGHWA PICTURE TUBES, LTD., AU OPTRONICS CORPORATION, HANNSTAR DISPLAY CORPORATION, CHI MEI OPTOELECTRONICS CORPORATION, INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TPO DISPLAYS CORP.
    Inventors: Yue-Shih Jeng, Kei-Hsiung Yang
  • Patent number: 7443477
    Abstract: An in-plane switching liquid crystal display, especially relative to an in-plane switching liquid crystal display with the absence of an overcoat layer is provided. The in-plane switching liquid crystal display having a first substrate, a second substrate and a liquid crystal layer sandwiched therebetween, a plurality of gate lines and data lines disposed on the first substrate, a counter electrode disposed on the second substrate and corresponding to one of the data lines, a pixel having a pixel electrode, a pair of shielding electrodes and a common electrode also disposed on the first substrate. Through the arrangement of shielding electrodes as well as the counter electrode, the coupling effect of the applied pixel voltage on the data lines is shielded.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: October 28, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Jiunn-Shyong Lin, Po-Sheng Shih, Kei-Hsiung Yang, Tai-Shun Liao
  • Patent number: 7439544
    Abstract: The present invention provides a manufacturing method of an image TFT array, which includes providing a substrate including a thin film transistor region, a storage capacitor region, a pad region, and a common electrode region, forming a photoresist layer on the substrate, and performing a photolithographic and etching process by utilizing a half-tone mask to pattern the photoresist layer to define a position of a through hole on the storage capacitor region and form the photoresist layer of a first thickness on the thin film transistor region and the photoresist layer of a second thickness on the region between the thin film transistor region and the storage capacitor region, wherein the first thickness is greater than the second thickness.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: October 21, 2008
    Assignee: HannStar Display Corp.
    Inventors: Chin-Mao Lin, Kei-Hsiung Yang, Chian-Chih Hsiao
  • Publication number: 20080246905
    Abstract: Input displays are provided. A representative input display comprises a first substrate, a second substrate, a liquid crystal layer, a photo sensor, a color filter, and a light-shielding element. The liquid crystal layer accommodated in a liquid crystal space is sandwiched between transparent first and second substrates, comprising a first substrate side and a second substrate side. The photo sensor overlies the first substrate side. The color filter disposed in the liquid crystal space, over the photo sensor. The color filter comprises a first opening exposing portions of the photo sensor. The light-shielding element is disposed alongside portions of a periphery of the photo sensor.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 9, 2008
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Wei-Chou Chen, Po-Yang Chen, Kei-Hsiung Yang
  • Patent number: 7433007
    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: September 25, 2003
    Date of Patent: October 7, 2008
    Assignee: Hannistar Display Corporation
    Inventors: Kei-Hsiung Yang, Po-Sheng Shih
  • Publication number: 20080238888
    Abstract: An image detecting device is provided. The image detecting device includes a first shaft; a second shaft; a connecting shaft connected between the first and the second shafts; and an image detector mounted in one of the first shaft and the connecting shaft, wherein a first angle is formed between the first shaft and the connecting shaft, and a second angle is formed between the second shaft and the connecting shaft.
    Type: Application
    Filed: July 27, 2007
    Publication date: October 2, 2008
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Wei-Chou Chen, Kei-Hsiung Yang, Kun-Wei Lin
  • Publication number: 20080205084
    Abstract: A polarized light source device comprises a light source, a reflector, a transparent substrate, an antireflection layer, and a plurality of metal grid wires. The reflector surrounds the light source for reflecting the light, and has an opening for emitting the light. The transparent substrate is disposed at the opening. The antireflection layer is disposed on the transparent substrate. The metal grid wires are disposed on the antireflection layer for transmitting the light with a predetermined polarization therethrough.
    Type: Application
    Filed: August 9, 2007
    Publication date: August 28, 2008
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Wei Chou CHEN, Kei Hsiung Yang
  • Publication number: 20080143905
    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 into 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 into the bend state. Two different voltage field also can be respectively applied to the common electrode and the pixel electrode.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 19, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Chao-Hui Wu, Kei-Hsiung Yang, Po-Sheng Shih
  • Patent number: 7358013
    Abstract: A method for manufacturing a reflective coding plate is provided. The method includes steps of providing a first substrate, forming a mixture layer on the first substrate, providing a second substrate on the mixture layer and thereby a sandwich structure is formed, performing an orientation process on the sandwich structure, providing a mask having a code pattern thereon on one side of the sandwich structure, exposing the side of the sandwich structure to a UV light, removing the second substrate, and removing an unreacted part of the mixture layer.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: April 15, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Wei-Chou Chen, Kei-Hsiung Yang
  • Patent number: 7349052
    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 into 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 into the bend state. Two different voltage field also can be respectively applied to the common electrode and the pixel electrode.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 25, 2008
    Assignee: Hannstar Display Corp.
    Inventors: Zhao-Hui Wu, Kei-Hsiung Yang, Po-Sheng Shih
  • Publication number: 20080036926
    Abstract: The present invention provides a touch panel and a liquid crystal display. The liquid crystal display includes a panel, a plurality of reflective coding patterns printed on the panel, and a polarizing plate positioned on the panel, wherein the reflective coding patterns include a plurality of cholesteric liquid crystal molecules having a pitch length and a index of refraction, and the pitch length multiplied by the index of refraction is within a range of an infrared ray wavelength.
    Type: Application
    Filed: March 29, 2007
    Publication date: February 14, 2008
    Applicant: Hannstar Display Corporation
    Inventors: Wei-Chou Chen, Kei-Hsiung Yang
  • Publication number: 20080030673
    Abstract: A method for fabricating liquid crystal (LC) alignment includes the steps of processing an alignment film having a plurality of liquid crystal molecules with a single or plurality of plasma generating devices, such that the liquid crystal molecules are aligned at a high pretilt angle. Compared with the prior art, the present invention is suitable for modifying the alignment film surface adjustablely in directions and angles, and can attain the effect of alignment stability with a high pretilt angle in a single process, thus overcoming the drawbacks of the prior art.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 7, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chin-Yang Lee, Huang-Chin Tang, Kei-Hsiung Yang, Chih-Wei Chen, Chi-Hung Liu, Yu-Jung Shih
  • Patent number: 7325961
    Abstract: A polarized light source, has an illuminant for generating light having a transparent tube which is filled with mercury vapor and which has a fluorescent material disposed thereon; a reflective film surrounding the illuminant and having an opening for emitting the light; and a plurality of metal grid wires disposed at the opening for transmitting the light with a predetermined polarization therethrough; wherein the reflective film and the metal grid wires are disposed on the transparent tube.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: February 5, 2008
    Assignee: Hannstar Display Corp.
    Inventors: Wei Chou Chen, Kei Hsiung Yang
  • Patent number: 7323718
    Abstract: A readout pixel of an input display is provided. The readout pixel includes the fundamental elements as the normal pixel, and further includes a photo sensing element with a second switching element and a third switching element for generating a photo signal. The second switching element includes a second gate electrode connecting to a gate line, a second drain electrode, and a second source electrode connecting to a readout line. The third switching element includes a third gate electrode and a third drain electrode both connecting to a reference voltage, and a third source electrode connecting to the second drain electrode.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: January 29, 2008
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Wei-Chou Chen, Kei-Hsiung Yang
  • Publication number: 20080013035
    Abstract: A repairing method of a liquid crystal display panel having a gravity defect includes steps of providing a first pressure to the liquid crystal display panel. Next, a second pressure is continuously provided to the liquid crystal display panel, and a section from the edge of the liquid crystal panel to the sealant is removed and forming an opening through the closed sealant frame. Then, forcing out the excess liquid crystal to flow out the panel through the cut off sections, cleaning out the excess material including LC mixture around the opening, and sealing the opening with a fresh end sealant. After that, providing a third pressure to the liquid crystal display panel, curing the end sealant to seal the opening, and then removing the third pressure. Finally, annealing the liquid crystal display panel to recover original display quality.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 17, 2008
    Inventors: Kei-Hsiung Yang, Jiunn-Shyong Lin
  • Patent number: 7319504
    Abstract: A method of repairing an LCD panel having a mura defect is disclosed. The closed seal pattern of the LCD panel has a shape of frame with at least one jut portion directing to a peripheral side of the two substrates. Thus, when a mura defect occurs, a peripheral portion on one side of the two substrates is cut off, wherein the cutting passes across the jut portion of the closed seal pattern to form an opening with respect to the sealed region. An extra amount of liquid crystal can be pressed out through the opening. Then the opening is sealed using a sealant, such that the LCD panel having a mura defect is repaired.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: January 15, 2008
    Assignee: HannStar Display Corp.
    Inventors: Hsiang-Lung Liu, Kei-Hsiung Yang, Hsu-Ho Wu
  • Publication number: 20070257259
    Abstract: A readout pixel of an input display is provided. The readout pixel includes the fundamental elements as the normal pixel, and further includes a photo sensing element with a second switching element and a third switching element for generating a photo signal. The second switching element includes a second gate electrode connecting to a gate line, a second drain electrode, and a second source electrode connecting to a readout line. The third switching element includes a third gate electrode and a third drain electrode both connecting to a reference voltage, and a third source electrode connecting to the second drain electrode.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 8, 2007
    Applicant: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Wei-Chou Chen, Kei-Hsiung Yang
  • Patent number: 7264390
    Abstract: A polarized light source device comprises a light source, a reflector, a transparent substrate, an antireflection layer, and a plurality of metal grid wires. The reflector surrounds the light source for reflecting the light, and has an opening for emitting the light. The transparent substrate is disposed at the opening. The antireflection layer is disposed on the transparent substrate. The metal grid wires are disposed on the antireflection layer for transmitting the light with a predetermined polarization therethrough.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: September 4, 2007
    Assignee: Hannstar Display Corp.
    Inventors: Wei Chou Chen, Kei Hsiung Yang
  • Patent number: 7256862
    Abstract: A repairing method of a liquid crystal display panel having a gravity defect includes steps of removing the sealant outside the liquid crystal injection hole and providing a first pressure to the liquid crystal display panel. Next, a second pressure is continuously provided to the liquid crystal display panel, and the sealant in the liquid crystal injection hole is removed. Then, a third pressure is continuously provided to the liquid crystal display panel for pressing the liquid crystal out through the injection hole, and the flowed liquid crystal is cleaned out. After that, the liquid crystal injection hole is sealed with a fresh sealant and a fourth pressure is continuously provided to the liquid crystal display panel. Finally, the fresh sealant is cured and the fourth pressure is removed.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: August 14, 2007
    Assignee: HannStar Display Corp.
    Inventors: Chien-Ming Chen, Kei-Hsiung Yang