Patents by Inventor Po-Yang Chen

Po-Yang Chen 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: 8564542
    Abstract: A multi-touch detecting method is adapted for detecting touched points on a touch panel that includes first and second conductive films. The first conductive film exhibits electric anisotropy, and has a lower resistivity in a first direction. The multi-touch detecting method includes: applying a first voltage to the first conductive film; applying a second voltage greater than the first voltage to the second conductive film; measuring sequentially voltages at different measuring points of the first conductive film; obtaining a first local maximum voltage, a second local maximum voltage and a local minimum voltage from the measured voltages; determining a first location of the touched points based on a location of the measuring point corresponding to the first local maximum voltage; and determining a second location of the touched points based on a location of the measuring point corresponding to the second local maximum voltage.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: October 22, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Patent number: 8547491
    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: June 11, 2012
    Date of Patent: October 1, 2013
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Hsuan-Lin Pan, Jiunn-Shyong Lin
  • Patent number: 8487906
    Abstract: A method for detecting a touched position on a touch device including a first conductive layer and sensing electrodes disposed on one side of the first conductive layer and separated from each other is disclosed. The method includes providing a first voltage to the first conductive layer; receiving a touch signal in response to a touched position of the touch device to change the first voltage at an area of the first conductive layer; measuring the sensing electrodes detecting the variation of the first voltage to obtain voltage signals; obtaining a first sensing position according to the voltage signals and a position computing mode; obtaining a second sensing position according to the first sensing position and a correction mode. The area corresponds to the touched position, the second sensing position is equal to the touched position, and the correction mode has a first curve relation.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: July 16, 2013
    Assignee: Chimel Innolux Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Patent number: 8477117
    Abstract: An embedded optical induction input device and method of implementing the same. Such a device includes a light sensing circuit and a conversion circuit. The light sensing circuit generates an induced current signal based on the variations of the intensity of light irradiation received as caused by a touch-control-position event; and the conversion circuit is connected to the light sensing circuit and receives an induced current derived therefrom. The conversion circuit is provided with a first transistor and a second transistor coupled together, that are driven by a positive and a negative biases having the same period but different phases, thus the induced current signals are converted into induced voltage signals based on the alternative turn-on's and turn-off's of the first transistor and the second transistor.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 2, 2013
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Patent number: 8462282
    Abstract: A liquid crystal display and a driving method thereof are 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: September 20, 2009
    Date of Patent: June 11, 2013
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih
  • Publication number: 20130135249
    Abstract: A capacitive touch panel includes a substrate; a transparent conductive layer with anisotropic impedance located on the substrate; a plurality of driving sensing electrodes located on the opposite two sides of the transparent conductive layer; at least one sensing unit connected to the plurality of driving sensing electrodes for scanning the plurality of driving sensing electrodes; at least one voltage compensation unit which provides a offset voltage, at least one voltage compensation unit has a first end and a second end, the first end of at least one voltage compensation unit is at least connected to one of the plurality of driving sensing electrodes, the second end of at least one voltage compensation unit is connected to a grounding voltage. The present application also relates to a driving method for preventing leakage current of the capacitive touch panel.
    Type: Application
    Filed: June 1, 2012
    Publication date: May 30, 2013
    Applicant: SHIH HUA TECHNOLOGY LTD.
    Inventors: PO-YANG CHEN, FENG-YU KUO, PO-SHENG SHIH, CHIEN-YUNG CHENG, CHUN-LUNG HUANG
  • Patent number: 8441459
    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: Grant
    Filed: March 17, 2009
    Date of Patent: May 14, 2013
    Assignee: Hannstar Display Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Kei-Hsiung Yang
  • Patent number: 8427622
    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: August 24, 2011
    Date of Patent: April 23, 2013
    Assignee: Hannstar Display Corp.
    Inventors: Pao Yun Tang, Kei Hsiung Yang, Po Yang Chen
  • Patent number: 8400421
    Abstract: A multi-touch detecting method is adapted for detecting locations of touched points on a touch panel including first and second conductive films, and includes following steps. First measuring points of the first conductive film distributed along X-axis of a Cartesian plane are scanned, and x-components are determined accordingly. Second measuring points of the second conductive film distributed along Y-axis of the Cartesian plane are scanned, and y-components are determined accordingly. A first voltage is applied to the first conductive film, and A second voltage is applied to at least one of the second measuring points with the location on the Y-axis adjacent to or overlapping one of the y-components. Voltages at the first measuring points with the locations on the X-axis adjacent to or overlapping the x-components are measured sequentially and one of the y-components and one of the x-components are outputted.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: March 19, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Po-Yang Chen, Po-Sheng Shih, Chih-Han Chao, Chien-Yung Cheng
  • Publication number: 20130057504
    Abstract: A method for detecting a touch spot of the touch panel includes the following steps. The electrode pairs are scanned along the impedance direction for determining a first coordinate. A number of electrode pairs near the first coordinate are selected to obtain an electrode pair signal. The first driving electrodes of the selected electrode pairs are scanned to obtain a first signal. The second driving electrodes of the selected electrode pairs are scanned to obtain a second signal. A second coordinate is determined according to the electrode pair signal, first signal, and second signal. Finally, the touch spot is determined according to the first coordinate, and second coordinate.
    Type: Application
    Filed: December 29, 2011
    Publication date: March 7, 2013
    Applicant: SHIH HUA TECHNOLOGY LTD.
    Inventors: CHUN-LUNG HUANG, CHIEN-YUNG CHENG, PO-YANG CHEN, PO-SHENG SHIH
  • Publication number: 20130057508
    Abstract: A touch panel includes an insulating substrate, a first conductive layer, and a second conductive layer. The insulating substrate has two opposite surfaces. The first conductive layer, fixed on one surface of the insulating substrate, has a minimum impedance along a first minimum impedance direction. The second conductive layer, fixed on the other surface of the insulating substrate, has a minimum impedance along a second minimum impedance direction. The first minimum impedance direction is substantially perpendicular to the second minimum impedance direction.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 7, 2013
    Applicant: SHIH HUA TECHNOLOGY LTD.
    Inventors: PO-SHENG SHIH, PO-YANG CHEN
  • Publication number: 20130057943
    Abstract: An electronic paper display device includes an electronic paper display panel, and a functional layer. The electronic paper display panel includes a common electrode layer and a display surface. The functional layer is located on the display surface and includes a carbon nanotube touching functional layer. A distance between the common electrode layer and the carbon nanotube touching functional layer is above 100 microns and equal to or less than 2 millimeters.
    Type: Application
    Filed: December 27, 2011
    Publication date: March 7, 2013
    Applicant: Shih Hua Technology Ltd.
    Inventors: PO-SHENG SHIH, JIA-SHYONG CHENG, PO-YANG CHEN
  • Publication number: 20130015908
    Abstract: A touch panel includes an insulating substrate, a rectangular transparent conductive layer and a number of electrodes. The insulating substrate has two opposite surfaces. The rectangular transparent conductive layer, fixed on one of the surfaces of the insulating substrate, has two opposite long sides and two opposite short sides. The electrodes are disposed at the short sides of the rectangular transparent conductive layer with a regular interval and electrically connected to the rectangular transparent conductive layer. The rectangular transparent conductive layer further has anisotropic impedance and defines an impedance direction substantially perpendicular to the short sides of the rectangular transparent conductive layer.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 17, 2013
    Applicant: SHIH HUA TECHNOLOGY LTD.
    Inventors: PO-SHENG SHIH, CHIEN-YUNG CHENG, PO-YANG CHEN, JIA-SHYONG CHENG
  • Publication number: 20120313887
    Abstract: The present invention relates to a touch panel. The touch panel includes a sensor, an optically clear adhesive layer, and a cover lens. The sensor has a surface. The optically clear adhesive layer is located on the surface of the sensor. The cover lens is located on a surface of the optically clear adhesive layer. The touch panel defines two areas: a touch-view area and a trace area. A space is defined between the sensor and cover lens in the trace area. The space is filled with dielectric material with a permittivity less than a permittivity of the optically clear adhesive layer.
    Type: Application
    Filed: December 29, 2011
    Publication date: December 13, 2012
    Applicant: SHIH HUA TECHNOLOGY LTD.
    Inventors: PO-YANG CHEN, CHIEN-YUNG CHENG, PO-SHENG SHIH
  • Publication number: 20120306808
    Abstract: A method for detecting a touch spot of the touch panel includes the following steps. The electrode pairs are scanned along the impedance direction to obtain an electrical signal curve for determining a first coordinate. A number of first driving electrodes and a number of second driving electrodes near the first coordinate are selected. The selected first driving electrodes are scanned to obtain a first sensing signal. The selected second driving electrodes are scanned to obtain a second sensing signal. A second coordinate is determined according to the first and second sensing signals. Finally, the touch spot is determined according to the first and second coordinates.
    Type: Application
    Filed: May 22, 2012
    Publication date: December 6, 2012
    Applicant: Shih Hua Technology Ltd.
    Inventors: Chun-Lung Huang, Po-Yang Chen, Chien-Yung Cheng, Po-Sheng Shih
  • Publication number: 20120277882
    Abstract: A biocompatible implant composite particle and the method of making the same are provided. The implant composite particle includes a bone filler particle and a plurality of fibers, in which each fiber is partially embedded in the bone filler particle, and has a free portion extending from a surface of the bone filler particle. Both bone filler particle and fibers are biocompatible. The biocompatible implant composite can be used in a bone filler material for bone defects.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Inventors: Jo-Wei HUANG, Po-Yang Chen, Ken-Yuan Chang
  • Patent number: 8284175
    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: Grant
    Filed: January 29, 2008
    Date of Patent: October 9, 2012
    Assignee: Hannstar Display Corporation
    Inventors: Po Yang Chen, Kei Hsiung Yang
  • Publication number: 20120249908
    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: June 11, 2012
    Publication date: October 4, 2012
    Inventors: Po-Yang Chen, Po-Sheng Shih, Hsuan-Lin Pan, Jiunn-Shyong Lin
  • Publication number: 20120235429
    Abstract: In a handle-returning device of a cylinder lock assembly, a support base has an inner annular flange and an axial spring-retaining lug. A rotation driver has an inner tubular wall extending into the inner annular flange of the support base, and a spring driving element. A torsion spring is disposed around the inner annular flange and between the support base and the rotation driver, and has a spring leg abutting the spring-retaining lug and the spring driving element. A rotary plate abuts the support base opposite to the rotation driver, and has an engaging part engaging a tongue projecting from the rotation driver. A reinforced structure is thus provided to oppose high torsional stresses produced upon rotation of a lever handle.
    Type: Application
    Filed: March 15, 2012
    Publication date: September 20, 2012
    Applicant: TONG LUNG METAL INDUSTRY CO., LTD.
    Inventors: Po-Yang CHEN, Kai-Ting TUNG, Yu-Ting HUANG, Chia-Min SUN, Song-Gen SHYU, Ching-Chuan KUO
  • Patent number: 8269751
    Abstract: A photo element includes a photo thin film transistor (TFT), a switch thin film transistor, and a compensation thin film transistor. A bias line provides a bias voltage to the photo TFT. The photo TFT generates a photo-induced current under an illuminated environment. A first switch line provides a voltage to open the switch TFT, and thus the photo-induced current is read out through a readout line. A second switch line provides compensation current to open the compensation TFT. The compensation current applies a reverse-biased stress to the photo TFT; therefore the threshold voltage and sensitivity of the photo TFT can be maintained.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: September 18, 2012
    Assignee: Hannstar Display Corp.
    Inventors: Ting-Chung Liu, Po-Yang Chen, Hsien-Tang Hu, Chien-Chih Hsiau