Patents by Inventor Margaret J. Helber
Margaret J. Helber 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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Patent number: 8462298Abstract: An electronic display containing a light source and a color filter set, the color filter set comprising: a green color filter having a green filter layer comprising a first pigment having its maximum absorption at a wavelength from 600 to 700 nm wherein at least 90 volume percent of the first pigment particles have a particle size less than 300 nm, and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm wherein at least 90 volume percent of the second pigment particles have a particle size less than 300 nm, and wherein the green filter layer has a transmittance of 60% or more at a wavelength of 520 nm and of no more than 10% at a wavelength of 480 nm and of no more than 10% at a wavelength of 590 nm; a blue color filter having a blue filter layer; a red color filter having a red filter layer; and wherein the color gamut defined by the electronic display has a % NTSCx,y ratio greater than 88%.Type: GrantFiled: April 1, 2011Date of Patent: June 11, 2013Assignee: Global OLED Technology LLCInventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Patent number: 8147989Abstract: The invention provides an OLED device including an anode, a cathode and a green light-emitting layer located therebetween, said light-emitting layer including an anthracene host, a bis-diarylamine 9,10-substituted anthracene and a stabilizer compound which is selected from a quinacridone or a biphenylstyrylamine. Devices of the invention provide improvement in features such as stability and efficiency while maintaining excellent color.Type: GrantFiled: February 27, 2009Date of Patent: April 3, 2012Assignee: Global OLED Technology LLCInventors: Marina E. Kondakova, Kevin P. Klubek, Margaret J. Helber, Peter G. Bessey, J. Ramon Vargas, Michele L. Ricks
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Patent number: 7999451Abstract: A blue color filter having a blue filter layer comprising a first pigment having a maximum absorption at a wavelength within the range of from 550 to 650 nm, and a second pigment having a maximum absorption at a shorter wavelength than the first pigment within the range of from 500 to 600 nm, wherein the blue filter layer has chromaticity coordinates (x, y) in the 1931 CIE XYZ calorimetric system, calculated using CIE Standard Illuminant D65, that satisfy the expressions 0.134?x?0.15 and 0.03?y?0.06.Type: GrantFiled: November 10, 2006Date of Patent: August 16, 2011Assignee: Global OLED Technology LLCInventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Publication number: 20110183066Abstract: An electronic display containing a light source and a color filter set, the color filter set comprising: a green color filter having a green filter layer comprising a first pigment having its maximum absorption at a wavelength from 600 to 700 nm wherein at least 90 volume percent of the first pigment particles have a particle size less than 300 nm, and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm wherein at least 90 volume percent of the second pigment particles have a particle size less than 300 nm, and wherein the green filter layer has a transmittance of 60% or more at a wavelength of 520 nm and of no more than 10% at a wavelength of 480 nm and of no more than 10% at a wavelength of 590 nm; a blue color filter having a blue filter layer; a red color filter having a red filter layer; and wherein the color gamut defined by the electronic display has a % NTSCx,y ratio greater than 88%.Type: ApplicationFiled: April 1, 2011Publication date: July 28, 2011Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Patent number: 7973902Abstract: An electronic display containing a light source and a color filter set, the color filter set comprising: a green color filter having a green filter layer comprising a first pigment having its maximum absorption at a wavelength from 600 to 700 nm wherein at least 90 volume percent of the first pigment particles have a particle size less than 300 nm, and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm wherein at least 90 volume percent of the second pigment particles have a particle size less than 300 nm, and wherein the green filter layer has a transmittance of 60% or more at a wavelength of 520 nm and of no more than 10% at a wavelength of 480 nm and of no more than 10% at a wavelength of 590 nm; a blue color filter having a blue filter layer; a red color filter having a red filter layer; and wherein the color gamut defined by the electronic display has a % NTSCx,y ratio greater than 88%.Type: GrantFiled: November 10, 2006Date of Patent: July 5, 2011Assignee: Global OLED Technology LLCInventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Patent number: 7951450Abstract: A red color filter having a red filter layer comprising a pigment having a maximum absorption at a wavelength within the range of from 450 to 575 nm, wherein the red filter layer has chromaticity coordinates (x, y) in the 1931 CIE XYZ calorimetric system, calculated using CIE Standard illuminant D65, that satisfy the expressions 0.665?x?0.68 and 0.30?y?0.34.Type: GrantFiled: November 10, 2006Date of Patent: May 31, 2011Assignee: Global OLED Technology LLCInventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans
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Publication number: 20110052801Abstract: A green color filter having a green filter layer comprising a bridged aluminum phthalocyanine pigment and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm.Type: ApplicationFiled: October 22, 2010Publication date: March 3, 2011Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Patent number: 7837780Abstract: A green color filter having a green filter layer comprising a bridged aluminum phthalocyanine pigment and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm.Type: GrantFiled: November 10, 2006Date of Patent: November 23, 2010Assignee: Global OLED Technology LLCInventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Publication number: 20100219748Abstract: The invention provides an OLED device including an anode, a cathode and a green light-emitting layer located therebetween, said light-emitting layer including an anthracene host, a bis-diarylamine 9,10-substituted anthracene and a stabilizer compound which is selected from a quinacridone or a biphenylstyrylamine. Devices of the invention provide improvement in features such as stability and efficiency while maintaining excellent color.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Inventors: Marina E. Kondakova, Kevin P. Klubek, Margaret J. Helber, Peter G. Bessey, J. R. Vargas, Michele L. Ricks
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Patent number: 7544425Abstract: 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. The device exhibits good luminous yield with desirable color coordinates, particularly in the blue or blue-green region.Type: GrantFiled: April 26, 2005Date of Patent: June 9, 2009Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, Michele L. Ricks, Peter G. Bessey, Tukaram K. Hatwar, Jeffrey P. Spindler, Zbyslaw R. Owczarczyk
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Patent number: 7445736Abstract: This invention provides method for placing indicia on a support for an imaging element comprising embossing indicia, such as a logo, on a roller; providing a support wherein said support comprises a closed cell foam core and adhered thereto at least one flange layer, wherein said closed cell foam core comprises a polymer that has been expanded through the use of a blowing agent; and pressing said support against said embossed roller.Type: GrantFiled: December 23, 2002Date of Patent: November 4, 2008Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, John E. Benson, Peter T. Aylward, Barry M. Brown
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Publication number: 20080112069Abstract: An electronic display containing a light source and a color filter set, the color filter set comprising: a green color filter having a green filter layer comprising a first pigment having its maximum absorption at a wavelength from 600 to 700 nm wherein at least 90 volume percent of the first pigment particles have a particle size less than 300 nm, and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm wherein at least 90 volume percent of the second pigment particles have a particle size less than 300 nm, and wherein the green filter layer has a transmittance of 60% or more at a wavelength of 520 nm and of no more than 10% at a wavelength of 480 nm and of no more than 10% at a wavelength of 590 nm; a blue color filter having a blue filter layer; a red color filter having a red filter layer; and wherein the color gamut defined by the electronic display has a % NTSCx,y ratio greater than 88%.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Publication number: 20080112068Abstract: A green color filter having a green filter layer comprising a bridged aluminum phthalocyanine pigment and a second pigment having its maximum absorption at a wavelength from 400 to 500 nm.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Publication number: 20080111459Abstract: A blue color filter having a blue filter layer comprising a first pigment having a maximum absorption at a wavelength within the range of from 550 to 650 nm, and a second pigment having a maximum absorption at a shorter wavelength than the first pigment within the range of from 500 to 600 nm, wherein the blue filter layer has chromaticity coordinates (x, y) in the 1931 CIE XYZ calorimetric system, calculated using CIE Standard Illuminant D65, that satisfy the expressions 0.134?x?0.15 and 0.03?y?0.06.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans, Ronald S. Cok
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Publication number: 20080112067Abstract: A red color filter having a red filter layer comprising a pigment having a maximum absorption at a wavelength within the range of from 450 to 575 nm, wherein the red filter layer has chromaticity coordinates (x, y) in the 1931 CIE XYZ calorimetric system, calculated using CIE Standard illuminant D65, that satisfy the expressions 0.665?x?0.68 and 0.30?y?0.34.Type: ApplicationFiled: November 10, 2006Publication date: May 15, 2008Inventors: Margaret J. Helber, Paula J. Alessi, Mitchell S. Burberry, Donald R. Diehl, Mary C. Brick, Steven Evans
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Patent number: 7208233Abstract: An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the “c” ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either: a) linked directly to one of said secondary phenyl rings and is located on a meta or ortho position, or b) located in any position of another aryl group linked directly or indirectly to one of the secondary phenyl rings.Type: GrantFiled: March 16, 2004Date of Patent: April 24, 2007Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, Tukaram K. Hatwar, Hans F. Schmitthenner, Peter G. Bessey, Manju Rajeswaran
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Patent number: 7147938Abstract: 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: GrantFiled: June 30, 2004Date of Patent: December 12, 2006Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, Michele L. Ricks, William F. Nichols, Thomas L. Matochik, William B. Vreeland, Kevin M. Donovan
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Patent number: 7118812Abstract: An electroluminescent device comprises a light-emitting layer containing a light emitting phosphorescent material that contains an organometallic complex comprising iridium fully complexed with indole ligand groups or comprising Ir, Rh, Os, Ru, Pt, and Pd and an isoindole compound. The invention further comprises compositions of certain such complexes as well as a display or area lighting devices and a process for emitting light. The organometallic materials function as useful phosphorescent light emitting materials in electroluminescent devices.Type: GrantFiled: December 5, 2003Date of Patent: October 10, 2006Assignee: Eastman Kodak CompanyInventors: Joseph C. Deaton, Margaret J. Helber, David J. Giesen
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Patent number: 7074503Abstract: Disclosed is an electroluminescent device comprising a light emitting layer comprising a boron complex wherein the boron is bonded to a nitrogen atom of a first 5-membered heteroaromatic ring group and to a nitrogen atom of a second 5-membered heteroaromatic ring group, provided that the 5-membered rings are further connected by a methene or an imine bridge to form a six-membered ring, and provided further that at least one of the 5-membered rings contains at least one additional heteroatom that is divalent or trivalent.Type: GrantFiled: January 30, 2004Date of Patent: July 11, 2006Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, J. Ramon Vargas
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Patent number: 7070868Abstract: Disclosed is an electroluminescent device comprising a light emitting layer comprising a boron complex wherein the boron is bonded to a nitrogen atom of a 6-membered heteroaromatic ring group and to a nitrogen atom of a 5-membered heteroaromatic ring group, provided that the 5- and 6-membered heteroaromatic ring groups are further connected by an imine group, and provided that the 5-membered heteroaromatic ring group contains at least one additional heteroatom that is divalent or trivalent, and a process or device employing the device.Type: GrantFiled: January 30, 2004Date of Patent: July 4, 2006Assignee: Eastman Kodak CompanyInventors: Margaret J. Helber, J. Ramon Vargas, Scott R. Conley