Patents by Inventor Michele Ricks
Michele Ricks 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).
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Publication number: 20080093989Abstract: A method for selecting two different light-emitting materials for use in an OLED device, each of which produces different color light, which combine to produce white light. Each light emitting material has its own point on a chromaticity diagram, and the light-emitting materials are selected such that, when a line is drawn between the first point and the second point, it passes through a desired white area defined on a chromaticity diagram.Type: ApplicationFiled: December 19, 2007Publication date: April 24, 2008Inventors: Jeffrey Spindler, Tukaram Hatwar, Michele Ricks
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Publication number: 20070207342Abstract: An OLED device comprises an anode, a light emitting layer, a first layer, a second layer contiguous to the first layer, and a cathode, in that order. The first layer includes a first complex comprising gallium and the second layer includes a second complex also comprising gallium and wherein the second complex has a more negative LUMO than the first complex. Such materials can provide an improvement in one or more of luminance, drive voltage, and stability.Type: ApplicationFiled: March 1, 2006Publication date: September 6, 2007Inventors: Tommie Royster, Michele Ricks
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Publication number: 20070003785Abstract: An organic light-emitting diode device (OLED) comprises a cathode, a light-emitting layer, and an anode in that order, in which there is located a first layer (L1) adjacent to the light-emitting layer on the anode side and a second layer (L2) adjacent to L1 on the anode side, in which: (a) layer L1 comprises a benzidine derivative (B1) having an oxidation potential of 0.8-0.9 V; and (b) layer L2 comprises a benzidine derivative (B2) having an oxidation potential greater than 0.7 V and exhibiting a glass transition temperature, Tg, of greater than 125° C.Type: ApplicationFiled: June 30, 2005Publication date: January 4, 2007Inventors: Wojciech Slusarek, Michele Ricks, Marcel Madaras
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Publication number: 20060251922Abstract: An OLED includes an anode, a light-emitting layer disposed over the anode, and a first electron-injecting layer disposed over the light-emitting layer, wherein the first electron-injecting layer includes at least one organic host material having a reduction potential less than ?1.0 V vs. a Saturated Calomel Electrode and at least one dopant material capable of reducing the organic host material. The OLED also includes a second electron-injecting layer disposed in contact with the first electron-injecting layer, wherein the second electron-injecting layer includes at least one organic material having a reduction potential greater than ?1.0 V vs. a Saturated Calomel Electrode, and a cathode disposed over the second electron-injecting layer.Type: ApplicationFiled: May 6, 2005Publication date: November 9, 2006Inventors: Liang-Sheng Liao, Wojciech Slusarek, Michele Ricks, Ralph Young, Dustin Comfort
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Publication number: 20060204783Abstract: An OLED device comprises a cathode, an anode, and having therebetween a light emitting layer containing (a) an anthracene material represented by Formula (1): wherein: Ar2, Ar9, and Ar10 independently represent an aryl group, v1, v3, v4, v5, v6, v7, and v8 independently represent hydrogen or a substituent; and (b) a light emitting dopant; the device further containing on the cathode side of the light emitting layer an electron transporting layer that contains a minor portion or no AlQ3. The device exhibits improved color or operating voltage or both.Type: ApplicationFiled: March 10, 2005Publication date: September 14, 2006Inventors: Scott Conley, Michele Ricks, William Begley, Daniel Gisser
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Publication number: 20060188745Abstract: A tandem OLED includes an anode and a cathode. The OLED also includes at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole -transporting layer and one organic light-emitting layer. An intermediate connector is disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the electron-accepting layer includes one or more organic materials, each having a reduction potential greater than ?0.5 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials constitute more than 50% by volume of the electron-accepting layer.Type: ApplicationFiled: February 23, 2005Publication date: August 24, 2006Inventors: Liang-Sheng Liao, Wojciech Slusarek, Tukaram Hatwar, Michele Ricks, Dustin Comfort
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Publication number: 20060159952Abstract: An OLED device having at least one light-emitting layer including at least first and second different host materials, wherein the first host material includes an anthracene derivative that can crystallize and the second host material includes a second anthracene derivative which does not crystallize, wherein the stability of the first host material is greater than the stability of the second host material, and the mixed first and second host materials reduce the crystallization effects of the first host material, and the stability of the mixed first and second host materials is improved relative to the stability of the second host material, and a light-emitting material.Type: ApplicationFiled: January 14, 2005Publication date: July 20, 2006Applicant: Eastman Kodak CompanyInventors: Michele Ricks, Lelia Cosimbescu
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Publication number: 20060105198Abstract: A method for selecting two different light-emitting materials for use in an OLED device, each of which produces different color light, which combine to produce white light. Each light emitting material has its own point on a chromaticity diagram, and the light-emitting materials are selected such that, when a line is drawn between the first point and the second point, it passes through a desired white area defined on a chromaticity diagram.Type: ApplicationFiled: November 17, 2004Publication date: May 18, 2006Inventors: Jeffrey Spindler, Tukaram Hatwar, Michele Ricks
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Publication number: 20060093856Abstract: An organic electroluminescent device comprises a cathode, an anode, and has therebetween a light-emitting layer comprising an emissive component represented by formula (I): wherein: Ar1, each Ar2, and Ar3 through Ar7 are independently selected aryl or heteroaryl groups, which may contain additional fused rings and provided that two aryl or heteroaryl rings may be joined; n is 1, 2 or 3.Type: ApplicationFiled: April 26, 2005Publication date: May 4, 2006Inventors: Margaret Helber, Michele Ricks, Peter Bessey, Tukaram Hatwar, Jeffrey Spindler, Zbyslaw Owczarczyk
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Publication number: 20060003183Abstract: An electroluminescent device includes a light-emitting layer containing a host material and: (a) a compound of Formula (1): X1—Ar1—C(R1)?C(R2)—Ar2 ??(1) wherein: Ar1 represents a divalent aromatic group; Ar2 represents an aromatic group; X1 represents at least one electron-donating group; R1 and R2 independently represent hydrogen or a substituent; and (b) a light-emitting boron complex having an absorption spectrum that overlaps with the emission spectrum of compound (1). The device serves to improve luminance efficiency while maintaining good color purity.Type: ApplicationFiled: June 30, 2004Publication date: January 5, 2006Inventors: Margaret Helber, Michele Ricks, William Nichols, Thomas Matochik, William Vreeland, Kevin Donovan
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Publication number: 20050280008Abstract: A color OLED display having at least three different colored microcavity pixels, each including a light reflective structure and a semi-transparent structure includes an array of light-emitting microcavity pixels each having one or more common organic light-emitting layers, said light-emitting layer(s) including first and second light-emitting materials, respectively, that produce different light spectra, the first light-emitting material producing light having a first spectrum portion that extends between first and second different colors of the array, and the second light-emitting material producing light having a second spectrum portion that is substantially contained within a third color that is different from the first and second colors, and each different colored pixel being tuned to produce light in one of the three different colors whereby the first, second, and third different colors are produced by the OLED display.Type: ApplicationFiled: June 16, 2004Publication date: December 22, 2005Inventors: Michele Ricks, Tukaram Hatwar, Jeffrey Spindler, Dustin Winters, Joel Shore
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Publication number: 20050271899Abstract: Disclosed is an OLED device comprising a light emitting layer containing an electroluminescent component having a first bandgap and at least two non-electroluminescent components having second and further bandgaps, respectively, as more fully described in the summary of the invention.Type: ApplicationFiled: June 23, 2005Publication date: December 8, 2005Inventors: Christopher Brown, Tukaram Hatwar, Michele Ricks
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Publication number: 20050249972Abstract: A color OLED display having at least three different colored microcavity pixels including a light-reflective structure and a semitransparent structure comprising an array of light-emitting microcavity pixels each having one or more common organic light-emitting layers, said light-emitting layer(s) having first, second, and third light-emitting materials that produce different light spectra. The first light-emitting material producing light has a first spectrum portion that is substantially contained within a first color of the array, the second light-emitting material producing light has a second spectrum portion that is substantially contained within a second color that is different from the first color, and the third light-emitting material producing light has a third spectrum portion that is substantially contained within a third color that is different from the first and second colors.Type: ApplicationFiled: May 4, 2004Publication date: November 10, 2005Inventors: Tukaram Hatwar, Jeffrey Spindler, Michele Ricks, Dustin Winters, Joel Shore
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Publication number: 20050233166Abstract: An OLED device includes an anode, a first light-emitting layer disposed over the anode, and a second light-emitting layer disposed over the first light-emitting layer. The device also includes a metal-doped organic layer containing an organic electron-transporting material and a low work function metal disposed over the second light-emitting layer, and a cathode disposed over the metal-doped organic layer.Type: ApplicationFiled: April 14, 2004Publication date: October 20, 2005Inventors: Michele Ricks, Tukaram Hatwar, Jeffrey Spindler, Michael Boroson
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Publication number: 20050208698Abstract: A method for making an OLED device includes providing a substrate having one or more test regions and one or more device regions, moving the substrate into a least one deposition chamber for deposition of at least one organic layer, and depositing the at least one organic layer through a shadowmask selectively onto the at least one device region and at least one test region on the substrate. The method also includes measuring a property of the at least one organic layer in the at least one test region, and adjusting the deposition process in accordance with the measured property.Type: ApplicationFiled: March 18, 2004Publication date: September 22, 2005Inventors: Dustin Winters, Michele Ricks, Nancy Armstrong, Robert Cupello
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Publication number: 20050181232Abstract: A white light-emitting OLED device including spaced anode and cathode, and having blue light-emitting and yellow, orange, or red light-emitting layers, the blue light-emitting layer including a monoanthracene derivative of Formula (I) as a host material: wherein R1-R8 are H; R9 is not the same as R10; R9 is a naphthyl group having no fused rings with aliphatic carbon ring members; and R10 is a biphenyl group having no fused rings with aliphatic carbon ring members; provided that R9 and R10 are free of amines and sulfur compounds.Type: ApplicationFiled: February 17, 2004Publication date: August 18, 2005Inventors: Michele Ricks, Tukaram Hatwar, Jeffrey Spindler, Lelia Cosimbescu
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Publication number: 20050147844Abstract: An OLED device produces white light more effectively matching the response of multicolor filters in an OLED device including an anode and a cathode and an organic EL element disposed between the anode and cathode having at least two different dopants for collectively emitting white light. The device includes a color filter array disposed over the EL element and including at least three separate filters having bandpass spectra for passing red, green, and blue light, respectively, in response to white light to produce preselected color outputs, and the composition of one or more of the dopants being selected to change the spectrum of the white light to be compatible with the spectrum of the color filters by having peak responses in the white light spectrum corresponding to the bandpass spectra of the red and blue color filters whereby the white light more effectively matches the responses of the color filters.Type: ApplicationFiled: January 5, 2004Publication date: July 7, 2005Inventors: Tukaram Hatwar, Jeffrey Spindler, Christopher Brown, Michele Ricks