Patents Represented by Attorney Jasper Dockrey
  • Patent number: 6072272
    Abstract: A flat panel display device includes a cathode (58) in parallel opposed position to and vertically separated from an anode (56). Red (46), green (44), and blue (42) subpixels are sequentially arrayed on the anode (56). Electron emitter subpixels (50, 52, 54) are arrayed on the cathode (58) in paired relationship to the red, green, and blue subpixels (46, 44, 42) located on the anode (56). To provide enhanced color performance, the surface area of the blue subpixel (42) is greater than the surface area of either the green subpixel (44) or the red subpixel (46). Additionally, the red subpixel (46) is horizontally shifted toward the green subpixel (44) and away from the blue subpixel (42).
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: June 6, 2000
    Assignee: Motorola, Inc.
    Inventor: Rob Rumbaugh
  • Patent number: 6051924
    Abstract: A field emission device (100, 200) includes a cathode plate (102) having a plurality of electron emitters (532), an anode plate (104) disposed to receive electrons emitted by plurality of electron emitters (532), a frame (109) interposed between cathode plate (102) and anode plate (104) and defining a central opening (112), a mating member (110, 210, 310, 410, 510) coextensive with frame (109) and disposed within central opening (112), and a getter structure (114, 214, 314, 414, 514, 614) mated with mating member (110, 210, 310, 410, 510).
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: April 18, 2000
    Assignee: Motorola, Inc.
    Inventors: Jeffery A. Whalin, Arthur J. Ingle, Charles A. Rowell
  • Patent number: 6033924
    Abstract: A method for fabricating a field emission device (200) includes the steps of forming on the surface of a substrate (110) a cathode (112), forming on the cathode (112) a dielectric layer (114), forming an emitter well (115) in the dielectric layer (114), forming within the emitter well (115) an electron emitter structure (118) having a surface (123), forming on a portion of the dielectric layer (114) a gate electrode (116), depositing on the dielectric layer (114) a sacrificial layer (210), thereafter depositing on the surface (123) of the electron emitter structure (118) a coating material (220, 320, 420) that has an emission-enhancing material, and then removing the sacrificial layer (210).
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 7, 2000
    Assignee: Motorola, Inc.
    Inventors: Sung P. Pack, Babu R. Chalamala
  • Patent number: 6031344
    Abstract: A method for driving a field emission display (100) includes the steps of applying a drive signal (146) to an emission electrode (113) and manipulating the drive signal (146) using a feedback controller to control an electrode voltage signal (158) at the emission electrode (113). A field emission display (100) includes a field emission display device (110), a feedback controller (123), and a current source (120). The current source (120) is connected to an input (144) of the field emission display device (110). An output (131) of the feedback controller (123) is connected to an input (127) of the current source (120), and the input (144) of the field emission display device (110) is connected to the input (129) of the feedback controller (123).
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: February 29, 2000
    Assignee: Motorola, Inc.
    Inventors: Ken K. Foo, Kim Hasler
  • Patent number: 6031336
    Abstract: A field emission display (100) includes a cathode plate (110) having a plurality of electron emitters (114), an anode plate (122) having an anode (124) connected to a potential source (126), and an anode voltage pull-down circuit (127) having an input (106) and an output (104). Output (104) is connected to anode (124), and input (106) is connected to potential source (126). Preferably, anode voltage pull-down circuit (127) causes an anode voltage (120) at anode (124) to drop to about ground potential prior to generation of a discharge current by electron emitters (114) for neutralizing positively electrostatically charged surfaces (137, 138) within field emission display (100).
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: February 29, 2000
    Assignee: Motorola, Inc.
    Inventors: Robert C. Rumbaugh, Robert T. Smith, Johann Trujillo, Chenggang Xie, Scott V. Johnson, Curtis D. Moyer, David M. Rice
  • Patent number: 5945780
    Abstract: A field emission display (200) includes a cathode plate (202); a substrate (102) opposing the cathode plate (202); a conductive matrix (104) disposed on the substrate (102) and having via walls (103) defining a plurality of phosphor vias (105); a phosphor (106, 108, 110) disposed within each of the phosphor vias (105); and a gas-adsorption material distributed within the conductive matrix (104). A method for fabricating the field emission display (200) includes the steps of silk-screening onto the substrate (102) a screenable suspension, which is made from a glass, a metal, a gas-adsorption material, and a photo-sensitive material, to form a film; photo-patterning the film to form a phosphor via (105); depositing a phosphor material into the phosphor via (105) to form an anode plate (100); and affixing the cathode plate (202) to the anode plate (100).
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: August 31, 1999
    Assignee: Motorola, Inc.
    Inventors: Arthur J. Ingle, Charles Rowell, Babu Chalamala, Ronald O. Petersen, Craig Amrine, Matthew Stainer