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: 8027008
    Abstract: A liquid crystal display panel includes a lower substrate, a printed circuit board, at least one connection unit and a plurality of readout lines. The connection unit is adapted to connect the printed circuit board to a periphery region of the lower substrate, and has a driver. The readout lines are extended from the lower substrate to the printed circuit board through the connection unit having the driver.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: September 27, 2011
    Assignee: Hannstar Display Corp.
    Inventors: Pao Yun Tang, Kei Hsiung Yang, Po Yang Chen
  • Patent number: 8023079
    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: Grant
    Filed: March 29, 2007
    Date of Patent: September 20, 2011
    Assignee: HannStar Display Corporation
    Inventors: Wei-Chou Chen, Kei-Hsiung Yang
  • Patent number: 7825998
    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: Grant
    Filed: April 6, 2007
    Date of Patent: November 2, 2010
    Assignee: Hannstar Display Corp.
    Inventors: Wei-Chou Chen, Po-Yang Chen, Kei-Hsiung Yang
  • Publication number: 20100134712
    Abstract: A liquid crystal display panel includes a lower substrate, a printed circuit board, at least one connection unit and a plurality of readout lines. The connection unit is adapted to connect the printed circuit board to a periphery region of the lower substrate, and has a driver. The readout lines are extended from the lower substrate to the printed circuit board through the connection unit having the driver.
    Type: Application
    Filed: February 24, 2009
    Publication date: June 3, 2010
    Applicant: HANNSTAR DISPLAY CORP.
    Inventors: Pao Yun TANG, Kei Hsiung YANG, Po Yang CHEN
  • Patent number: 7705961
    Abstract: A fabricating method of a liquid crystal display panel provides a first substrate and a second substrate in a chamber. Liquid crystal with a predetermined weight is dropped on the first substrate at a predetermined temperature higher than room temperature. The first substrate and the second substrate are assembled at the predetermined temperature to seal the liquid crystal with the predetermined weight within a liquid crystal cavity formed between the first substrate and the second substrate.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: April 27, 2010
    Assignee: HannStar Display Corp.
    Inventors: Chien-Ming Chen, Kei-Hsiung Yang
  • Publication number: 20100079406
    Abstract: An in-cell capacitive touch panel is disclosed. The present invention utilizes a sensing unit that comprises a sensing liquid crystal capacitor and three transistors to detect touch events. A first transistor is connected to a first gate line and the sensing liquid crystal capacitor and controlled by the first gate line to charge the sensing liquid crystal capacitor. A second transistor together with a third transistor functions as a capacitance-current converter. The second transistor generates an output current according to the voltage of a first electrode of the sensing liquid crystal capacitor. A second gate line controls the third transistor to transfer the output current through a readout line to a readout unit that determines the touch positions. Thus, the in-cell capacitive touch panel of the present invention can use a simple-structure readout circuit to achieve superior readout accuracy and is adaptive to various sizes of touch panels.
    Type: Application
    Filed: March 17, 2009
    Publication date: April 1, 2010
    Inventors: PO-YANG CHEN, PO-SHENG SHIH, KEI-HSIUNG YANG
  • Patent number: 7626678
    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: Grant
    Filed: July 9, 2007
    Date of Patent: December 1, 2009
    Assignee: HannStar Display Corp.
    Inventors: Kei-Hsiung Yang, Jiunn-Shyong Lin
  • Patent number: 7626662
    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: Grant
    Filed: August 3, 2007
    Date of Patent: December 1, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chin-Yang Lee, Huang-Chin Tang, Kei-Hsiung Yang, Chih-Wei Chen, Chi-Hung Liu, Yu-Jung Shih
  • Publication number: 20090290118
    Abstract: A liquid crystal display (LCD) device comprises a first substrate having a grooved surface profile; an alignment film layer of inorganic material formed on the grooved surface and having the grooved surface profile, the alignment film of inorganic material being aligned in response to an ion beam incident to the grooved surface in a direction parallel to a groove direction; a second substrate aligned opposite the first substrate for forming a plurality of LCD cells having liquid crystal (LC) material deposited therein, wherein LC molecules align parallel to the grooves for enhanced LCD performance.
    Type: Application
    Filed: July 31, 2009
    Publication date: November 26, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Minhua Lu, Kei-Hsiung Yang
  • 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
  • Patent number: 7570333
    Abstract: A liquid crystal display (LCD) device comprises a first substrate having a grooved surface profile; an alignment film layer of inorganic material formed on the grooved surface and having the grooved surface profile, the alignment film of inorganic material being aligned in response to an ion beam incident to the grooved surface in a direction parallel to a groove direction; a second substrate aligned opposite the first substrate for forming a plurality of LCD cells having liquid crystal (LC) material deposited therein, wherein LC molecules align parallel to the grooves for enhanced LCD performance.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 4, 2009
    Assignee: International Business Machines Corporation
    Inventors: Minhua Lu, Kei-Hsiung Yang
  • Patent number: 7548300
    Abstract: A fabricating method of a liquid crystal display panel provides a first substrate and a second substrate. The first substrate has a sealant used for sealing with the second substrate to form a liquid crystal cavity. The first substrate and the second substrate are placed into a chamber to perform a liquid crystal filling process. An end seal process is performed at a predetermined temperature higher than room temperature to seal the liquid crystal with a predetermined weight into the liquid crystal cavity. A liquid crystal injection method, an end seal process, and heating apparatus are also provided.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: June 16, 2009
    Assignee: HannStar Display Corp.
    Inventors: Chien-Ming Chen, Kei-Hsiung Yang
  • 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
  • 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
  • Patent number: 7525620
    Abstract: A structure of an optical compensated bend nematic liquid crystal display panel is disclosed. In one embodiment, the structure includes i) a thin film transistor array substrate, wherein a first alignment layer is formed on a surface of the thin film transistor array substrate and a plurality of first spacers are disposed on the surface of the thin film transistor array substrate, ii) an opposite substrate corresponding to the thin film transistor array substrate, wherein a second alignment layer is formed on a surface of the opposite substrate and a plurality of second spacers are disposed on the surface of the opposite substrate and iii) an isolation layer disposed between the thin film transistor array substrate and the opposite substrate, wherein the isolation layer is made of a plurality of polymers with side chains of high carbon number.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: April 28, 2009
    Assignee: Hannstar Display Corporation
    Inventors: Kei-Hsiung Yang, Chien-Huang Liao, Hao-Ming Chang, Yen-Ting Chen
  • 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
  • Patent number: 7497611
    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: August 9, 2007
    Date of Patent: March 3, 2009
    Assignee: Hannstar Display Corp.
    Inventors: Wei Chou Chen, Kei Hsiung Yang
  • Publication number: 20090053966
    Abstract: A fabricating method of a liquid crystal display panel provides a first substrate and a second substrate in a chamber. Liquid crystal with a predetermined weight is dropped on the first substrate at a predetermined temperature higher than room temperature. The first substrate and the second substrate are assembled at the predetermined temperature to seal the liquid crystal with the predetermined weight within a liquid crystal cavity formed between the first substrate and the second substrate.
    Type: Application
    Filed: October 29, 2008
    Publication date: February 26, 2009
    Inventors: Chien-Ming CHEN, Kei-Hsiung YANG
  • 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
  • Publication number: 20080284757
    Abstract: A light pointing device employed in an input apparatus comprises a signal receiving interface and a light emitting component. The signal receiving interface is used to receive a system signal from the input apparatus. The light emitting component can generate a flashing light source whose intermittence cycle is synchronized with the reference clock cycle of the system signal Furthermore, the ratio of the intermittence cycle of the flashing light source to the reference clock cycle of the system signal is a natural number.
    Type: Application
    Filed: January 29, 2008
    Publication date: November 20, 2008
    Applicant: HANNSTAR DISPLAY CORPORATION
    Inventors: Po Yang Chen, Kei Hsiung Yang