Patents by Inventor Dean Barker

Dean Barker 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: 5789848
    Abstract: A field emission display (100, 200, 300) and a method of making the same are disclosed. The field emission display (100, 200, 300) includes an anode (110, 210, 310) having a plurality of cathodoluminescent deposits (120, 220, 320), a back plate (185, 285, 385) including a cathode (130, 230, 330) having a plurality of field emitters (140, 240, 340) and being affixed to a cathode reinforcement member (170, 270, 370), and a plurality of side members (150, 250, 350) disposed between the anode (110, 210, 310) and the cathode (130, 230,330) and hermetically affixed thereto. The thicknesses of the anode (110, 210, 310) and the back plate (185, 285, 385) are sufficient to provide the structural support necessary to maintain the mechanical integrity of the field emission display (100, 200, 300).
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: August 4, 1998
    Assignee: Motorola, Inc.
    Inventors: Lawrence N. Dworsky, Dean Barker, James E. Jaskie, Ronald O. Petersen, Robert T. Smith
  • Patent number: 5698928
    Abstract: An array of thin film piezoelectric resonators are formed on a substrate and connected in parallel to form a single piezoelectric resonator with enhanced piezoelectric coupling. The array includes a first conductive layer positioned on the substrate and defining a first electrode, a plurality of columns of piezoelectric material positioned on the conductive layer and each defining a separate piezoelectric resonator, and a second conductive layer positioned on the plurality of columns and defining a second electrode. The columns are selectively deposited or deposited as a single layer and etched into columns.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 16, 1997
    Assignee: Motorola, Inc.
    Inventors: Luke Mang, Sung P. Pack, Dean Barker
  • Patent number: 5689278
    Abstract: A display (10) utilizes a drive scheme that minimizes power dissipation by reducing the operating frequency at which columns (12) operate. The operating frequency is reduced by positioning column timing signals (32) near an end of a horizontal display time (38,39,48,49) if the next horizontal display time also has data to be displayed.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: November 18, 1997
    Assignee: Motorola
    Inventors: Dean Barker, Ralph Cisneros
  • Patent number: 5633561
    Abstract: A conductor array (100), for addressing a plurality of field emitters (130), including a plurality of cathode conductors (106, 108, 110) having conductive cathode connectors (126), a plurality of gate conductors (104) having a plurality of conductive gate connectors (116, 118, 120), and a plurality of fusible links (134, 138), which are located at a plurality of overlapping regions (103) of the cathode conductors (106, 108, 110) and the gate conductors (104) and which can be electrically severed to isolate electrical shorts existing at the overlapping regions (103).
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: May 27, 1997
    Assignee: Motorola
    Inventor: Dean Barker
  • Patent number: 5631518
    Abstract: A display (10) includes an electron source having a row conductor (17) that utilizes a plurality of longitudinal elements (26, 28). Each longitudinal element (26, 28) has extraction section (19, 23) that extends from the longitudinal element toward an adjacent longitudinal element. The longitudinal elements (26, 28) are electrically connected by a plurality of transverse connectors (29, 38, 39). When a short occurs between the row (17) and an underlying column (12, 36), the shorted portion can be electrically isolated so that the remainder of the row remains functional.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: May 20, 1997
    Assignee: Motorola
    Inventor: Dean Barker
  • Patent number: 5606215
    Abstract: A field emission device (10) has a gate (17) including an opening (22) for the communication of electrons from an emitter (14) to an anode (16). A resistive layer (18) is disposed at least on the inner surface (23) of the gate (17) surrounding the opening (22). The field emission device (10) may further include an insulating, dielectric layer (19). The resistive layer (18) and the dielectric layer (19) reduce arcing between the emitter (14) and the gate (17) in the field emission device (10).
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: February 25, 1997
    Assignee: Motorola, Inc.
    Inventors: James E. Jaskie, Lawrence N. Dworsky, Dean Barker
  • Patent number: 5477110
    Abstract: A digital video word (14) that is utilized to specify an image to be displayed by a field emission device is divided into a plurality of digital subwords (16, 17). Each digital subword (16, 17) is utilized to create a control signal (21, 22) that is applied to an input (23, 26, 32, 33) of a drive source (24, 27, 31). The digital subwords (16, 17) divide the control signals (21, 22) into time slots wherein each time slot has a duration that is greater than the duration of time slots represented by the original digital video word (14). In response to the control signals (21, 22) the drive source (24, 27, 31) provides a drive signal (28, 34) that has an output value and duration that is controlled by the duration of the control signals, and by an active and inactive state encoded by the control signals.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: December 19, 1995
    Assignee: Motorola
    Inventors: Robert T. Smith, Dean Barker