Patents by Inventor Dmitri Z. Garbuzov

Dmitri Z. Garbuzov 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).

  • Displays having mesa pixel configuration
    Patent number: 6650045
    Abstract: A multicolor organic light emitting display device employs angle-walled blue, green and red emitting mesas, with optional metal reflectors on the angled walls, in a plurality of pixels. The angle-walled mesas, which resemble truncated pyramids, direct light out of the mesa by reflection from the mesa side walls or by mirror reflection. The device of the present invention reduces waveguiding, thus simultaneously increasing both display brightness and resolution.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: November 18, 2003
    Assignee: The Trustees of Princeton University
    Inventors: Stephen R. Forrest, Paul Burrows, Dmitri Z. Garbuzov
  • Displays having mesa pixel configuration
    Patent number: 6091195
    Abstract: A multicolor organic light emitting display device employs angle-walled blue, green and red emitting mesas, with optional metal reflectors on the angled walls, in a plurality of pixels. The angle-walled mesas, which resemble truncated pyramids, direct light out of the mesa by reflection from the mesa side walls or by mirror reflection. The device of the present invention reduces waveguiding, thus simultaneously increasing both display brightness and resolution.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: July 18, 2000
    Assignee: The Trustees of Princeton University
    Inventors: Stephen R. Forrest, Paul Burrows, Dmitri Z. Garbuzov
  • High reliability, high efficiency, integratable organic light emitting devices and methods of producing same
    Patent number: 6046543
    Abstract: An organic light emitting device (OLED) having an inverted structure including a cathode layer which is deposited on a substrate and on top of which an electron transporting layer (ETL), an electroluminescent (EL) layer, a hole transporting layer (HTL), a protection layer and an anode are deposited in sequence. The inverted OLED (IOLED) provides improved longevity, flexibility and efficiency over conventional OLEDs.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 4, 2000
    Assignee: The Trustees of Princeton University
    Inventors: Vladimir Bulovic, Stephen R. Forrest, Paul Burrows, Dmitri Z. Garbuzov
  • Method and apparatus for measuring film spectral properties
    Patent number: 6005252
    Abstract: Film spectral properties are measured by projecting chopped monochromatic light onto a luminescent film sample deposited on a substrate, and coupling through use of immersion oil the reflection of light therefrom to a light detector.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: December 21, 1999
    Assignee: The Trustees of Princeton University
    Inventors: Stephen R. Forrest, Paul E. Burrows, Dmitri Z. Garbuzov, Vladimir Bulovic
  • Organic luminescent coating for light detectors
    Patent number: 5986268
    Abstract: An organic luminescent coating such as Aluminum-Tris-Quinolate is applied to a light detector for converting UV to green light to improve the efficiency of the light detector. The coating also provides anti-reflection properties when of sufficient thickness.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: November 16, 1999
    Assignee: The Trustees of Princeton University
    Inventors: Stephen R. Forrest, Paul E. Burrows, Vladimir Bulovic, Dmitri Z. Garbuzov
  • Light emitting device with stack of OLEDS and phosphor downconverter
    Patent number: 5874803
    Abstract: Monochromatic and multicolor light emitting devices which make use of phosphor layers to downconvert light emitted from organic light emitting materials into different, more desired colors. The light emitting devices of the present invention are used in a variety of applications to provide displays with high brightnesses and efficiencies.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: February 23, 1999
    Assignee: The Trustees of Princeton University
    Inventors: Dmitri Z. Garbuzov, Stephen R. Forrest, Paul Burrows
  • High efficiency organic light emitting devices with light directing structures
    Patent number: 5834893
    Abstract: An organic light emitting device (OLED) structure having reflective surfaces is fabricated in a pit formed in a substrate. The pit has slanted reflective side walls which redirect light that is waveguided in the organic layers of the OLED to a direction substantially normal to the plane of the substrate. The reflective structure can also be formed with a planar configuration over interconnects covered with a polyimide.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: November 10, 1998
    Assignee: The Trustees of Princeton University
    Inventors: Vladimir Bulovic, Stephen R. Forrest, Paul Burrows, Dmitri Z. Garbuzov