Patents by Inventor Wen-Foo Chern

Wen-Foo Chern 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: 9618783
    Abstract: An improved Liquid Crystal Display (LCD) heating system is provided. Resistor meshes, in particular VCOM resistor heating meshes, in the pixel array improve capacity of the display heater (heating system) so that the display is heated faster from low temperatures. The resistor mesh design provides much lower resistance from one point in the pixel array to an edge than pixel-to-pixel horizontal VCOM resistance, thus reducing horizontal crosstalk. Further, the approach permits the display to be active during the warm-up process.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: April 11, 2017
    Assignee: Kopin Corporation
    Inventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
  • Publication number: 20140152933
    Abstract: An improved Liquid Crystal Display (LCD) heating system is provided. Resistor meshes, in particular VCOM resistor heating meshes, in the pixel array improve capacity of the display heater (heating system) so that the display is heated faster from low temperatures. The resistor mesh design provides much lower resistance from one point in the pixel array to an edge than pixel-to-pixel horizontal VCOM resistance, thus reducing horizontal crosstalk. Further, the approach permits the display to be active during the warm-up process.
    Type: Application
    Filed: November 14, 2013
    Publication date: June 5, 2014
    Applicant: Kopin Corporation
    Inventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
  • Patent number: 7242383
    Abstract: An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: July 10, 2007
    Assignee: Kopin Corporation
    Inventors: Matthew Zavracky, Jeffrey Jacobsen, Frederick P. Herrmann, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard, Ronald P. Gale, Jason Lo, Stephen A. Pombo, Rodney Bumgardner
  • Publication number: 20070018919
    Abstract: An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system. The image is written to the the display therein causing the liquid crystal to move to a specific image position. A light source is flashed to illuminate the display. The pixel electrodes are set to a specific value to cause the liquid crystal to move towards a desired position. The process of writing, flashing, and setting the electrode intensity value to reorient the liquid crystal to produce an image is repeated.
    Type: Application
    Filed: June 26, 2006
    Publication date: January 25, 2007
    Inventors: Matthew Zavracky, Frederick Herrmann, Wen-Foo Chern, Alan Richard, Ronald Gale, Jason Lo, David Ellertson, Kuojinng Tsai, John Fan, Bor-Yeu Tsaur, Stephen Pombo, Rodney Bumgardner, Duy-Phach Vu
  • Patent number: 6909419
    Abstract: An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: June 21, 2005
    Assignee: Kopin Corporation
    Inventors: Matthew Zavracky, Jeffrey Jacobsen, Frederick P. Herrmann, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard, Ron Gale, Jason Lo, Stephen A. Pombo, Rodney Bumgardner
  • Publication number: 20040061198
    Abstract: A semiconductor device system for coupling with external circuitry. The system includes a control signal on a carrier substrate. A semiconductor device is attached to the carrier substrate with an impedance matching device coupled to the control signal.
    Type: Application
    Filed: October 1, 2003
    Publication date: April 1, 2004
    Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
  • Patent number: 6677936
    Abstract: The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a viewfinder in a electronic image record system such as a digital camera or video camera. The matrix display can be transmissive or reflective using sequential lighting. The system can use an alternating common voltage which allows reduced power consumption. In addition an internal heating system in the display allows the system to be used at low temperatures.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: January 13, 2004
    Assignee: Kopin Corporation
    Inventors: Jeffrey Jacobsen, John C. C. Fan, Stephen A. Pombo, Matthew Zavracky, Rodney Bumgardner, Alan Richard, Wen-Foo Chern
  • Publication number: 20030205779
    Abstract: A semiconductor device system for coupling with external circuitry. The system includes a control signal on a carrier substrate. A semiconductor device is attached to the carrier substrate with an impedance matching device coupled to the control signal.
    Type: Application
    Filed: June 4, 2003
    Publication date: November 6, 2003
    Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
  • Patent number: 6552704
    Abstract: An active matrix color sequential liquid crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix circuit has an array of transistor circuits formed in a first plane. Each transistor circuit is connected to a pixel electrode in an array of pixel electrodes having a small area. The counterelectrode panel extends in a second plane that is parallel to the first plane, such that the counterelectrode panel receives an applied voltage. The liquid crystal layer is interposed in a cavity between the two planes. In a preferred embodiment, an oxide layer extends over the pixel electrode array. The oxide can have a first thickness in a peripheral region around the array of the pixel electrodes and a thinner second thickness in a pixel electrode region extending over the array of pixel electrodes.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: April 22, 2003
    Assignee: Kopin Corporation
    Inventors: Matthew Zavracky, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard
  • Patent number: 6476784
    Abstract: An active matrix color sequential liquid crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix circuit has an array of transistor circuits formed in a first plane. Each transistor circuit is connected to a pixel electrode in an array of pixel electrodes having a small area. The display is housed in a portable display device having a docking port for a memory card used to input video data for the display.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: November 5, 2002
    Assignee: Kopin Corporation
    Inventors: Matthew Zavracky, Jeffrey Jacobsen, Frederick P. Herrmann, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard
  • Publication number: 20020158823
    Abstract: An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.
    Type: Application
    Filed: May 10, 1999
    Publication date: October 31, 2002
    Inventors: MATTHEW ZAVRACKY, JEFFREY JACOBSEN, FREDERICK P. HERRMANN, WEN-FOO CHERN, HIAP L. ONG, JOHN C.C. FAN, BOR-YEU TSAUR, ALAN RICHARD, RONALD P. GALE, JASON LO, STEPHEN A. POMBO, RODNEY BUMGARDNER
  • Publication number: 20020154082
    Abstract: An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system that has a display computer that generates images to be displayed on the liquid crystal display and connected to the active matrix liquid crystal display. A data link transmits data at a rate of speed of greater than 200 Mbytes per second in series for at least a portion between the display computer and the active matrix liquid crystal display. In a preferred embodiment, the display system has a randomizing device that alternates the amplifier through which an analog video signal passes.
    Type: Application
    Filed: September 15, 1998
    Publication date: October 24, 2002
    Inventors: MATTHEW ZAVRACKY, JEFFREY JACOBSEN, FREDERICK P. HERRMANN, WEN-FOO CHERN, HIAP L. ONG, JOHN C.C. FAN, BOR-YEU TSAUR, ALAN RICHARD, RON GALE, JASON LO, STEVE POMBO, RODNEY BUMGARDNER
  • Patent number: 6448628
    Abstract: An extensive network of N-channel transistor formed capacitor, with one node tie directly to VCC power bus and the other node directly VSS power bus, is implemented throughout all open space available on the whole silicon chip (memory as well as logic chip), particularly those directly underneath the metal power bus to achieve an on-chip power bus decoupling capacitor with capacitance in excess of 0.001 &mgr;F.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: September 10, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Wen-Foo Chern, Ward D. Parkinson, Thomas M. Trent, Kevin G. Duesman
  • Publication number: 20020030649
    Abstract: A color active matrix display system allows random access of pixel electrodes. The control electronics is fabricated with the active matrix circuitry using single crystal silicon technology. The control electronics includes a random access data scanner and random access spec scanners. By selectively actuating pixel electrodes in the active matrix display region, compressed video information can be directly displayed on the active matrix display panel. Color stripes are used to generate sequential color systems to produce a color image from the active matrix display panel.
    Type: Application
    Filed: July 20, 2001
    Publication date: March 14, 2002
    Applicant: Kopin Corporation
    Inventors: Matthew Zavracky, Wen-Foo Chern, Ronald Gale, Peter A. Ronzani, Stephen Pombo
  • Publication number: 20020008264
    Abstract: An extensive network of N-channel transistor formed capacitor, with one node tie directly to Vcc power bus and the other node directly Vss power bus, is implemented throughout all open space available on the whole silicon chip (memory as well as logic chip), particularly those directly underneath the metal power bus to achieve an on-chip power bus decoupling capacitor with capacitance in excess of 0.001 &mgr;F.
    Type: Application
    Filed: January 27, 2000
    Publication date: January 24, 2002
    Inventors: Wen-foo Chern, Ward D. Parkinson, Thomas M. Trent, Kevin G. Duesman
  • Publication number: 20010054989
    Abstract: A color active matrix display system allows random access of pixel electrodes. The control electronics is fabricated with the active matrix circuitry using single crystal silicon technology. The control electronics includes a random access data scanner and random access spec scanners. By selectively actuating pixel electrodes in the active matrix display region, compressed video information can be directly displayed on the active matrix display panel. Color stripes are used to generate sequential color systems to produce a color image from the active matrix display panel.
    Type: Application
    Filed: September 26, 1997
    Publication date: December 27, 2001
    Inventors: MATTHEW ZAVRACKY, WEN FOO CHERN, RONALD GALE, PETER A. RONZANI, STEPHEN POMBO
  • Publication number: 20010045927
    Abstract: An active matrix color sequential liquid crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix circuit has an array of transistor circuits formed in a first plane. Each transistor circuit is connected to a pixel electrode in an array of pixel electrodes having a small area. The counterelectrode panel extends in a second plane that is parallel to the first plane, such that the counterelectrode panel receives an applied voltage. The liquid crystal layer is interposed in a cavity between the two planes. In a preferred embodiment, an oxide layer extends over the pixel electrode array. The oxide can have a first thickness in a peripheral region around the array of the pixel electrodes and a thinner second thickness in a pixel electrode region extending over the array of pixel electrodes.
    Type: Application
    Filed: October 31, 1997
    Publication date: November 29, 2001
    Inventors: MATTHEW ZAVRACKY, WEN-FOO CHERN, HIAP L. ONG, JOHN C. C. FAN, BOR-YEU TSAUR, ALAN RICHARD
  • Publication number: 20010045928
    Abstract: An active matrix color sequential liquid crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix circuit has an array of transistor circuits formed in a first plane. Each transistor circuit is connected to a pixel electrode in an array of pixel electrodes having a small area. The display is housed in a portable display device having a docking port for a memory card used to input video data for the display.
    Type: Application
    Filed: January 8, 1998
    Publication date: November 29, 2001
    Inventors: MATTHEW ZAVRACKY, JEFFREY JACOBSEN, FREDERICK P. HERRMANN, WEN-FOO CHERN, HIAP L. ONG, JOHN C.C. FAN, BOR-YEU TSAUR, ALAN RICHARD
  • Publication number: 20010042899
    Abstract: A SIMM (single in-line memory module) board is provided with a plurality of integrated semiconductor memory or other integrated semiconductor circuit devices which include, as a part of each integrated circuit device, a current spike leveling capacitor. The capacitor is on the die side of circuitry connecting the device to the board. By connecting the on-chip capacitors of the integrated circuit devices in parallel, sufficient capacitance is provided to stabilize current to all of the integrated circuit devices.
    Type: Application
    Filed: February 2, 2001
    Publication date: November 22, 2001
    Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
  • Publication number: 20010043166
    Abstract: The invention relates to a microdisplay system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a viewfinder in a electronic image record system such as a digital camera or video camera. The matrix display can be transmissive or reflective using sequential lighting. The system can use an alternating common voltage which allows reduced power consumption. In addition an internal heating system in the display allows the system to be used at low temperatures.
    Type: Application
    Filed: September 30, 1997
    Publication date: November 22, 2001
    Inventors: JEFFREY JACOBSEN, JOHN C.C. FAN, STEPHEN A. POMBO, MATTHEW ZAVRACKY, RODNEY BUMGARDNER, ALAN RICHARD, WEN-FOO CHERN