Abstract: The present disclosure relates to electrically conductive polymer compositions, comprising at least one electrically conductive copolymer; and at least one fluorinated acid polymer, their use in organic electronic devices, and methods for preparation.
Type:
Grant
Filed:
June 27, 2006
Date of Patent:
May 25, 2010
Assignees:
E.I. du Pont de Nemours and Company, Dupont Displays Inc.
Inventors:
Che-Hsiung Hsu, Sunghan Kim, Charles J. Dubois, Christopher P. Junk, Andrew Edward Feiring, Zhen-Yu Yang, Amy Qi Han, legal representative, Mark F. Teasley, Viacheslav A. Petrov
Abstract: Defects are detected in organic electronic device displays such as organic light emitting diode (OLED) displays. An infrared camera may be used to screen displays for defects and to identify the locations of the defects. Relative hot or cold areas in a display correspond to defects and can be detected using the infrared camera.
Type:
Grant
Filed:
December 16, 2005
Date of Patent:
January 6, 2009
Assignee:
Dupont Displays, Inc.
Inventors:
Johann Thomas Trujillo, Ian D. Parker, Andrew Wesley Johnson, Lingling Wu, Dmitry Kolosov, John Penczek
Abstract: A circuit for an electronic device includes a select unit, a data holder unit, an electronic component, a transistor, and a switch. The control terminal of the switch is coupled to a first select line, the first terminal of the switch is connected to a first electrode of the electronic component, and the second terminal of the switch is connected to a reference voltage line. A method of using an electronic component that includes such a circuit includes writing data to a pixel and driving the electronic component. The select unit and the switch are configured to turn on at substantially a same time, and the select unit and the switch are configured to turn off at substantially a same time during writing and driving, respectively.
Abstract: Organic compositions of conductive polymers are provided. The compositions have at least one polymer selected from polypyrrole, polythiophene, or combinations and at least one colloid-forming polymeric acid dispersed in a liquid medium that is at least 60% by weight at least one organic liquid. Also provided is a method of making such compositions.
Type:
Grant
Filed:
March 17, 2004
Date of Patent:
July 31, 2007
Assignees:
E. I. du Pont de Nemours and Company, DuPont Displays, Inc.
Inventors:
Che-Hsiung Hsu, Charles Douglas Macpherson, Hjalti Skulason
Abstract: An electronic device includes a radiation-emitting component, a radiation-responsive component, or a combination thereof. In one embodiment, the electronic device includes a substrate and a first structure overlying the substrate. The electronic device also includes a second structure that includes a first layer, wherein the first layer has a first refractive index, and the first layer includes a first edge. The electronic device further includes a second layer overlying at least portions of the first structure and the second structure at the first edge. The second layer has a second refractive index that is lower than the first refractive index. In another embodiment, the first structure includes a layer having a perimeter and a pattern lying within the perimeter. The pattern extends at least partly though the first layer to define an opening with a first edge. In another embodiment, a process is used to form the electronic device.
Type:
Grant
Filed:
March 23, 2005
Date of Patent:
July 31, 2007
Assignees:
E. I. du Pont de Nemours and Company, DuPont Displays, Inc.
Inventors:
Matthew Dewey Hubert, Matthew Stevenson, Patrick Hahn, Frank P. Uckert, Gang Yu
Abstract: An electronic device is provided that includes an organic panel, including a platform made of an electrically nonconductive material; a first electrode on the platform; an organic active layer on the first electrode; a second electrode on the organic active layer; and a first alignment structure, in addition, a driver panel is provided and includes a substrate; a driver circuit formed on the substrate; and a second alignment structure for coupling with the first alignment structure to position the organic panel and driver panel in substantial alignment, and to electrically couple the driver circuit to the organic active layer.
Abstract: The energy levels (HOMO, LUMO) of the conjugated polymer are tuned independently, so that an energy match on both sides of the device can be accomplished while keeping the emission color in the blue region. Such polymers can be formed by polymerization of a mixture of monomers. The mixture of the monomers contains at least one monomer having an electron-deficient group sandwiched by two aromatic hydrocarbon groups (“Monomer (I)”) and at least one hole transporting (“HT”) monomer. The mixture of monomers may also contain a solubility enhancement (“SE”) monomer and/or a Branching Monomer. Such polymers can be used in fabricating light emitting diodes to achieve some of the best device performance to date including high efficiency and blue color purity.
Type:
Grant
Filed:
February 3, 2004
Date of Patent:
November 21, 2006
Assignees:
E.I. du Pont de Nemours and Company, DuPont Displays, Inc.
Inventors:
Hailiang Wang, Frank P. Uckert, Sunghan Kim
Abstract: Methods for creating a protective seal suitable for protecting polymer-based electronic devices, including light emitting diodes and polymer emissive displays, are disclosed together with the protected devices. The protective seal includes one or more thin films of silicon nitride (SiN) or other inorganic dielectric applied at low temperature. One or more nonreactive metal layers may be present in the protective layer as well. Other embodiments are disclosed which include a protective cover over the protective layers. These protective layers provide encapsulation with sufficient protection from the atmosphere to enable shelf life and stress life for polymer electronic devices that are adequate for commercial applications.
Abstract: An electronic device includes a substrate, a structure having openings, and a first electrode overlying the structure and lying within the openings. From a cross-sectional view, the structure, at the openings, has a negative slope. From a plan view, each opening has a perimeter that may or may not substantially correspond to a perimeter of an organic electronic component. The portions of the first electrode overlying the structure and lying within the openings are connected to each other. In a process for forming the electronic device, an organic active layer may be deposited within the opening, wherein the organic active layer has a liquid composition.
Type:
Grant
Filed:
August 3, 2004
Date of Patent:
January 31, 2006
Assignee:
DuPont Displays, Inc.
Inventors:
Charles Douglas MacPherson, Matthew Stainer, Michael Anzlowar, Paul Anthony Sant, Sughosh Venkatesh
Abstract: A film including polyaniline in the emeraldine salt form (PANI) and poly(2-acrylamido-2 methyl-1-propanesulfonic acid) (PAAMPSA) as a counterion and optionally a water-soluble host polymer, the film is useful in an electronic device such as pixellated displays.
Abstract: The luminous efficiency and radiance of light emitting diodes (LEDs) fabricated from organic emissive materials can be increased by using a multilayer cathode including a low work function layer and a high work function high reflectivity layer, in combination with a high work function, high reflectivitity anode material in the device.
Abstract: This invention relates generally to the field of light emitting diodes (LEDs). More particularly, this invention relates to organic light emitting diodes which employ an electron-injecting cathode comprising a thin layer of an oxide of a low work function metal. More specifically, the present invention relates to LEDs which comprise: (a) a hole-injecting anode layer; (b) an electron-injecting cathode layer; and, (c) an emissive layer; wherein: (i) said emissive layer is interposed between said anode layer and said cathode layer; (ii) said emissive layer comprises an electroluminescent, semiconducting, organic material; (iii) said cathode layer comprises a layer of metal oxide having a thickness of from about 15 to about 200 Å; and, (iv) said metal oxide is selected from the group consisting of alkali metal oxides, alkaline earth metal oxides, lanthanide metal oxides, and mixtures thereof.
Abstract: Organic diode detectors with switchable photosensitivity are achieved using organic photo layers in the photodiodes and a detector circuit which applies a reverse or forward bias voltage across the diodes. The diodes can be arranged in matrices which function as high performance, two-dimensional image sensors. These image sensors can achieve full color or selected color detection capability.