Patents Assigned to eMAGIN Corporation
  • Patent number: 6278237
    Abstract: An organic light emitting device for a multicolor image display. The elements of the device are arranged laterally along the substrate surface in a pillar and channel arrangement, rather than the traditional method of vertical stacking. The invention's pillar and channel architecture provides a rugged structure which can be efficiently encapsulated. The lateral arrangement of the various elements along the substrate reduces sheet resistance and increases external efficiency by allowing the typical transparent conductor layer to be replaced with a conventional metal.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: August 21, 2001
    Assignee: eMagin Corporation
    Inventor: Richard A. Campos
  • Patent number: 6265820
    Abstract: A heat removal system for use in an organic light emitting diode displays is disclosed. The heat removal assembly includes a heat dissipating assembly for dissipating heat from the organic light emitting device, a heat transfer assembly for transferring heat from the top organic light emitting device to the heat dissipating assembly and a cooling assembly for cooling the organic light emitting display device.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: July 24, 2001
    Assignee: eMAGIN Corporation
    Inventors: Amalkumar P. Ghosh, Walter V. Johnstone, Olivier F. Prache, Steven M. Zimmerman
  • Patent number: 6255771
    Abstract: A field emitter device including an insulator structure provided on an upper gate line layer of the device. The insulator structure may surround groups of emitters arranged on adjacent gate lines, groups of emitters arranged on the same gate lines, and/or entire regions of a larger array of field emitters. The insulator structure may reduce the occurrence of flashovers to and from the gate lines and emitters when the field emitter device is used in a display. The insulator structure may also enhance the focus of electrons emitted by the field emitter device on the display screen. Focus may be further enhanced by the addition of a resistive coating on the insulator structure. Methods of making the insulator structure and resistive coating are also disclosed.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: July 3, 2001
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Steven M. Zimmerman, Webster E. Howard, Stewart Lloyd
  • Patent number: 6218777
    Abstract: A structure to reduce the likelihood of flashover in a parallel plate electron beam array is disclosed. The structure may comprise a spacer structure between the parallel plates along the outer perimeter of the plates. The spacer structure may include a conductive member. The conductive member may shunt anode to cathode flashovers to a sink outside of the array before they reach the cathode. The conductive member may be provided by a conductive frit made of a metal/glass mixture, a metal foil, or a metal coating that extends through or next to the spacer structure.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: April 17, 2001
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Webster E. Howard
  • Patent number: 6215840
    Abstract: Circuits for sequentially addressing memory locations in time with pulses received from a clock are disclosed. The circuits may provide a positive voltage output signal at successive output nodes associated with corresponding stages in the circuit responsive to the application of a clock signal to the circuit stages. The circuit may comprise at least first and second stages wherein said first stage comprises means for providing a positive voltage signal at a first output node in the first stage in response to application of a first positive clock pulse to the first stage, and wherein said second stage comprises means for providing a positive voltage signal at a second output node in the second stage in response to application of a second positive clock pulse to the second stage. Addressing of memory locations that contain pixel information for a video display is one particular application in which sequential addressing may be required.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: April 10, 2001
    Assignee: eMagin Corporation
    Inventors: Shashi D. Malaviya, Olivier Prache
  • Patent number: 6198220
    Abstract: A sealing structure for an organic light emitting device display. The sealing structure comprises a metal film overlying a dielectric film. The sealing structure has low moisture and oxygen permeability. At least one of the metal layers may react with moisture or oxygen to seal off pin holes. A net low stress sealing structure may be formed by combining tensile and compressive films. The sealing structure may be etched to create openings for connection to outside circuitry. The innovative sealing structure minimizes moisture leakage and vertical shorts between diode cathode and anode.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: March 6, 2001
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Webster E. Howard, Steven M. Zimmerman
  • Patent number: 6169358
    Abstract: A structure to reduce the likelihood of flashover in a parallel plate electron beam array is disclosed. The structure may comprise a means for generating a low intensity electric field in the vicinity of a spacer separating the parallel plates of the array, and the anode. The presence of the electric field in the vicinity of the spacer is not conducive to the occurrence of a surface supported flashover on the gates and emitters. The electric field means may be provided by a conductive coating on one or more surfaces of the spacer. Alternatively, the electric field means may be provided by a conductive coating on a guard ring located within the array in the vicinity of the spacer. Methods of making the structure are also disclosed.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: January 2, 2001
    Assignee: eMAGIN Corporation
    Inventors: Gary W. Jones, Steven M. Zimmerman
  • Patent number: 6166820
    Abstract: An interferometric lithographic apparatus includes an arrangement for applying interfering laser beams to a part for producing a first interference pattern. The first interference pattern has a first fringe spacing. A mobile part holder stage is repositioned to change the interference pattern and produce a second fringe spacing. A control arrangement, automatically responsive to the repositioning of the part holder, re-aligns optical paths and optimally interferes the laser beams to produce the second fringe spacing.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: December 26, 2000
    Assignee: eMagin Corporation
    Inventors: Amalkumar P. Ghosh, Susan K. Schwartz Jones, Gary W. Jones, Steven M. Zimmerman, Yachin Liu
  • Patent number: 6144145
    Abstract: A high performance novel electron emitter material for use in field emission devices is disclosed. The high performance electron emitter material of the invention may comprise a high Cr and SiO mixture. This material may be formed into high aspect ratio, low work function tips which maintain their shape, thus minimizing flash over risks and electron scattering problems, while at the same time permitting a high level of fabrication process flexibility, and minimizing film stresses. One or more impurities which are conductive oxides or will form conductive oxides may be added to the Cr--SiO composition so that a net low work function emitter may be maintained under oxidation. A class of semi-conductive and conductive metal oxides comprises another embodiment of the invention. These materials include oxides of Cr, Mo, Ni, Fe, and Sc, which have current emitting properties desirable for applications where improved electron emission infirmity is desired among emitters within a pixel.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: November 7, 2000
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Steven M. Zimmerman
  • Patent number: 6136621
    Abstract: A high aspect ratio gated emitter structure and a method of making the structure are disclosed. Emitters may be provided in a densely packed array on a support. Two distinct layers of insulator material may surround the emitters. The lower layer of insulator material may be a non-conformally applied spray-on or spin-on insulator. The non-conformal insulator material may pool at the base regions of the emitters so that the tip regions of the emitters extend out of the lower layer of insulator material. The upper layer of insulator material is applied to the lower layer using a conformal process so that the tip regions of the emitters are covered by the upper layer of insulator material. Gate material is applied to the upper layer of insulator material. Holes are provided in the gate material over the tip regions and wells are provided in the upper layer of insulator material surrounding the tip regions.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: October 24, 2000
    Assignee: eMagin Corporation
    Inventors: Gary W. Jones, Steven M. Zimmerman