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: 9618783Abstract: 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: GrantFiled: November 14, 2013Date of Patent: April 11, 2017Assignee: Kopin CorporationInventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
-
Publication number: 20140152933Abstract: 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: ApplicationFiled: November 14, 2013Publication date: June 5, 2014Applicant: Kopin CorporationInventors: Chompoonoot Anupongongarch, Frederick P. Herrmann, Wen-Foo Chern
-
Patent number: 7242383Abstract: 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: GrantFiled: May 10, 1999Date of Patent: July 10, 2007Assignee: Kopin CorporationInventors: 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: 20070018919Abstract: 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: ApplicationFiled: June 26, 2006Publication date: January 25, 2007Inventors: 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: 6909419Abstract: 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: GrantFiled: September 15, 1998Date of Patent: June 21, 2005Assignee: Kopin CorporationInventors: 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: 20040061198Abstract: 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: ApplicationFiled: October 1, 2003Publication date: April 1, 2004Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
-
Patent number: 6677936Abstract: 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: GrantFiled: September 30, 1997Date of Patent: January 13, 2004Assignee: Kopin CorporationInventors: Jeffrey Jacobsen, John C. C. Fan, Stephen A. Pombo, Matthew Zavracky, Rodney Bumgardner, Alan Richard, Wen-Foo Chern
-
Publication number: 20030205779Abstract: 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: ApplicationFiled: June 4, 2003Publication date: November 6, 2003Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
-
Patent number: 6552704Abstract: 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: GrantFiled: October 31, 1997Date of Patent: April 22, 2003Assignee: Kopin CorporationInventors: Matthew Zavracky, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard
-
Patent number: 6476784Abstract: 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: GrantFiled: January 8, 1998Date of Patent: November 5, 2002Assignee: Kopin CorporationInventors: Matthew Zavracky, Jeffrey Jacobsen, Frederick P. Herrmann, Wen-Foo Chern, Hiap L. Ong, John C. C. Fan, Bor-Yeu Tsaur, Alan Richard
-
Publication number: 20020158823Abstract: 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: ApplicationFiled: May 10, 1999Publication date: October 31, 2002Inventors: 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: 20020154082Abstract: 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: ApplicationFiled: September 15, 1998Publication date: October 24, 2002Inventors: 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: 6448628Abstract: 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: GrantFiled: January 27, 2000Date of Patent: September 10, 2002Assignee: Micron Technology, Inc.Inventors: Wen-Foo Chern, Ward D. Parkinson, Thomas M. Trent, Kevin G. Duesman
-
Publication number: 20020030649Abstract: 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: ApplicationFiled: July 20, 2001Publication date: March 14, 2002Applicant: Kopin CorporationInventors: Matthew Zavracky, Wen-Foo Chern, Ronald Gale, Peter A. Ronzani, Stephen Pombo
-
Publication number: 20020008264Abstract: 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: ApplicationFiled: January 27, 2000Publication date: January 24, 2002Inventors: Wen-foo Chern, Ward D. Parkinson, Thomas M. Trent, Kevin G. Duesman
-
Publication number: 20010054989Abstract: 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: ApplicationFiled: September 26, 1997Publication date: December 27, 2001Inventors: MATTHEW ZAVRACKY, WEN FOO CHERN, RONALD GALE, PETER A. RONZANI, STEPHEN POMBO
-
Publication number: 20010045927Abstract: 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: ApplicationFiled: October 31, 1997Publication date: November 29, 2001Inventors: MATTHEW ZAVRACKY, WEN-FOO CHERN, HIAP L. ONG, JOHN C. C. FAN, BOR-YEU TSAUR, ALAN RICHARD
-
Publication number: 20010045928Abstract: 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: ApplicationFiled: January 8, 1998Publication date: November 29, 2001Inventors: MATTHEW ZAVRACKY, JEFFREY JACOBSEN, FREDERICK P. HERRMANN, WEN-FOO CHERN, HIAP L. ONG, JOHN C.C. FAN, BOR-YEU TSAUR, ALAN RICHARD
-
Publication number: 20010042899Abstract: 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: ApplicationFiled: February 2, 2001Publication date: November 22, 2001Inventors: Stanley N. Protigal, Wen-Foo Chern, Ward D. Parkinson, Leland R. Nevill, Gary M. Johnson, Thomas M. Trent, Kevin G. Duesman
-
Publication number: 20010043166Abstract: 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: ApplicationFiled: September 30, 1997Publication date: November 22, 2001Inventors: JEFFREY JACOBSEN, JOHN C.C. FAN, STEPHEN A. POMBO, MATTHEW ZAVRACKY, RODNEY BUMGARDNER, ALAN RICHARD, WEN-FOO CHERN