Patents by Inventor Giuseppe Farruggia
Giuseppe Farruggia 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: 9073314Abstract: An electrohydrodynamic printing system includes a nozzle that dispenses a printing fluid and a substrate support. The nozzle includes a conductive portion. A voltage source applies a voltage differential between the conductive portion of the nozzle and the substrate support. A controller is configured to provide a burst mode waveform to the voltage source such that a drop of the printing fluid is caused to form from the conductive nozzle and travel toward the substrate support.Type: GrantFiled: July 11, 2013Date of Patent: July 7, 2015Assignee: EASTMAN KODAK COMPANYInventors: Michael J. Motala, Giuseppe Farruggia
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Publication number: 20150015629Abstract: An electrohydrodynamic printing system includes a nozzle that dispenses a printing fluid and a substrate support. The nozzle includes a conductive portion. A voltage source applies a voltage differential between the conductive portion of the nozzle and the substrate support. A controller is configured to provide a burst mode waveform to the voltage source such that a drop of the printing fluid is caused to form from the conductive nozzle and travel toward the substrate support.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventors: Michael J. Motala, Giuseppe Farruggia
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Publication number: 20150015628Abstract: A method of printing using an electrohydrodynamic printing system includes providing an electrohydrodynamic printing system. The electrohydrodynamic printing system includes a nozzle that dispenses a printing fluid and a substrate that receives the printing fluid. The nozzle includes a conductive portion. A voltage source applies a voltage differential between the conductive portion of the nozzle and the substrate. A controller is configured to control the voltage source such that the printing fluid is deposited on the substrate. The method includes causing a drop of the printing fluid to be formed from the conductive nozzle by using the controller to provide a burst mode waveform to the voltage source.Type: ApplicationFiled: July 11, 2013Publication date: January 15, 2015Inventors: Michael J. Motala, Giuseppe Farruggia
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Patent number: 8714676Abstract: A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop, respectively. The small drop waveform includes a pulse having a pulse energy Es, and a period XS, where XS?1/fR, and where fR is the Rayleigh frequency of the liquid. The large drop waveform has a period XL, where XL=NXS, with the large volume drop being N times the small volume drop. The large drop waveform includes a first pulse having a pulse energy EL1, where EL1?ES and a second pulse occurring within a time period X2, where X2?XS, of an initial pulse of a subsequent small or large drop waveform, the second pulse including a pulse energy EL2, where EL2<ES.Type: GrantFiled: March 12, 2012Date of Patent: May 6, 2014Assignee: Eastman Kodak CompanyInventors: Jeremy M. Grace, Ronald L. Oyer, Giuseppe Farruggia
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Patent number: 8684483Abstract: A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop, respectively. The small drop waveform includes a pulse having a width wS, and a period x, where x?1/fR, where fR is the Rayleigh frequency of the liquid. The large drop waveform includes a period Nx, with the large volume drop being N times the small volume drop. The large drop waveform includes a first pulse having a pulse width wL1, where wL1?wS, and a second pulse occurring within a period of (fR/fC)x of an initial pulse of a subsequent small or large drop waveform, where fC is the cut off frequency of the liquid. The second pulse includes a pulse width wL2, where wL2<wS.Type: GrantFiled: March 12, 2012Date of Patent: April 1, 2014Assignee: Eastman Kodak CompanyInventors: Jeremy M. Grace, Ronald L. Oyer, Giuseppe Farruggia
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Publication number: 20130235102Abstract: A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop, respectively. The small drop waveform includes a pulse having a width wS, and a period x, where x?1/fR, where fR is the Rayleigh frequency of the liquid. The large drop waveform includes a period Nx, with the large volume drop being N times the small volume drop. The large drop waveform includes a first pulse having a pulse width wL1, where wL1?wS, and a second pulse occurring within a period of (fR/fC)x of an initial pulse of a subsequent small or large drop waveform, where fC is the cut off frequency of the liquid. The second pulse includes a pulse width wL2, where wL2<wS.Type: ApplicationFiled: March 12, 2012Publication date: September 12, 2013Inventors: Jeremy M. Grace, Ronald L. Oyer, Giuseppe Farruggia
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Publication number: 20130235101Abstract: A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop, respectively. The small drop waveform includes a pulse having a pulse energy ES, and a period XS, where XS?1/fR, and where fR is the Rayleigh frequency of the liquid. The large drop waveform has a period XL, where XL=NXS, with the large volume drop being N times the small volume drop. The large drop waveform includes a first pulse having a pulse energy EL1, where EL1?ES and a second pulse occurring within a time period X2, where X2?XS, of an initial pulse of a subsequent small or large drop waveform, the second pulse including a pulse energy EL2, where EL2<ES.Type: ApplicationFiled: March 12, 2012Publication date: September 12, 2013Inventors: Jeremy M. Grace, Ronald L. Oyer, Giuseppe Farruggia
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Patent number: 8272910Abstract: An electroluminescent device including a transparent substrate, a securing layer, a light scattering layer, an electroluminescent unit including a transparent electrode layer, a light emitting element including at least one light emitting layer, and a reflecting electrode layer in that order, wherein the light scattering layer includes one monolayer of inorganic particles having an index of refraction larger than that of the light emitting layer and wherein the securing layer holds the inorganic particles in the light scattering layer.Type: GrantFiled: September 2, 2010Date of Patent: September 25, 2012Assignee: Global OLED Technologies LLCInventors: Yuan-Sheng Tyan, Jin-Shan Wang, Raymond A. Kesel, Giuseppe Farruggia, Thomas Cushman
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Patent number: 7911133Abstract: An OLED device including a transparent substrate having a first surface and a second surface, a transparent electrode layer disposed over the first surface of the substrate, a short reduction layer disposed over the transparent electrode layer, an organic light-emitting element disposed over the short reduction layer and including at least one light-emitting layer and a charge injection layer disposed over the light emitting layer, a reflective electrode layer disposed over the charge injection layer and a light extraction enhancement structure disposed over the first or second surface of the substrate; wherein the short reduction layer is a transparent film having a through-thickness resistivity of 10?9 to 102 ohm-cm2; wherein the reflective electrode layer includes Ag or Ag alloy containing more than 80% of Ag; and the total device size is larger than 10 times the substrate thickness.Type: GrantFiled: May 10, 2007Date of Patent: March 22, 2011Assignee: Global OLED Technology LLCInventors: Yuan-Sheng Tyan, Donald R. Preuss, Giuseppe Farruggia, Raymond A. Kesel, Thomas R. Cushman
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Publication number: 20100330716Abstract: An electroluminescent device including a transparent substrate, a securing layer, a light scattering layer, an electroluminescent unit including a transparent electrode layer, a light emitting element including at least one light emitting layer, and a reflecting electrode layer in that order, wherein the light scattering layer includes one monolayer of inorganic particles having an index of refraction larger than that of the light emitting layer and wherein the securing layer holds the inorganic particles in the light scattering layer.Type: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Applicant: GLOBAL OLED TECHNOLOGYInventors: Yuan-Sheng Tyan, Jin-Shan Wang, Raymond A. Kesel, Giuseppe Farruggia, Thomas R. Cushman
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Patent number: 7851995Abstract: An electroluminescent device including a transparent substrate, a securing layer, a light scattering layer, an electroluminescent unit including a transparent electrode layer, a light emitting element including at least one light emitting layer, and a reflecting electrode layer in that order, wherein the light scattering layer includes one monolayer of inorganic particles having an index of refraction larger than that of the light emitting layer and wherein the securing layer holds the inorganic particles in the light scattering layer.Type: GrantFiled: May 5, 2006Date of Patent: December 14, 2010Assignee: Global OLED Technology LLCInventors: Yuan-Sheng Tyan, Jin-Shan Wang, Raymond A. Kesel, Giuseppe Farruggia, Thomas R. Cushman
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Publication number: 20080278067Abstract: An OLED device including a transparent substrate having a first surface and a second surface, a transparent electrode layer disposed over the first surface of the substrate, a short reduction layer disposed over the transparent electrode layer, an organic light-emitting element disposed over the short reduction layer and including at least one light-emitting layer and a charge injection layer disposed over the light emitting layer, a reflective electrode layer disposed over the charge injection layer and a light extraction enhancement structure disposed over the first or second surface of the substrate; wherein the short reduction layer is a transparent film having a through-thickness resistivity of 10?9 to 102 ohm-cm2; wherein the reflective electrode layer includes Ag or Ag alloy containing more than 80% of Ag; and the total device size is larger than 10 times the substrate thickness.Type: ApplicationFiled: May 10, 2007Publication date: November 13, 2008Inventors: Yuan-Sheng Tyan, Donald R. Preuss, Giuseppe Farruggia, Raymond A. Kesel, Thomas R. Cushman
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Publication number: 20070257608Abstract: An electroluminescent device including a transparent substrate, a securing layer, a light scattering layer, an electroluminescent unit including a transparent electrode layer, a light emitting element including at least one light emitting layer, and a reflecting electrode layer in that order, wherein the light scattering layer includes one monolayer of inorganic particles having an index of refraction larger than that of the light emitting layer and wherein the securing layer holds the inorganic particles in the light scattering layer.Type: ApplicationFiled: May 5, 2006Publication date: November 8, 2007Inventors: Yuan-Sheng Tyan, Jin-Shan Wang, Raymond Kesel, Giuseppe Farruggia, Thomas Cushman
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Patent number: 7268485Abstract: A white light emitting OLED apparatus includes a microcavity OLED device and a light-integrating element, wherein the microcavity OLED device has a white light emitting organic EL element and the microcavity OLED device is configured to have angular-dependent narrow-band emission, and the light-integrating element integrates the angular-dependent narrow-band emission from different angles from the microcavity OLED device to form white light emission.Type: GrantFiled: October 7, 2003Date of Patent: September 11, 2007Assignee: Eastman Kodak CompanyInventors: Yuan-Sheng Tyan, Steven A. Van Slyke, Joel D. Shore, Giuseppe Farruggia, Thomas R. Cushman
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Patent number: 7183707Abstract: Various OLED display and device structures are disclosed which reduce shorting.Type: GrantFiled: April 12, 2004Date of Patent: February 27, 2007Assignee: Eastman Kodak CompanyInventors: Yuan-Sheng Tyan, Giuseppe Farruggia, Thomas R. Cushman
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Publication number: 20060244371Abstract: An organic light-emitting diode (OLED) device, comprising: a) a first OLED element; b) a second OLED element formed over the first OLED element; and c) a scattering layer optically coupled to the first and/or the second OLED elements; wherein the first and second OLED elements each include first and second spaced-apart conductors with one or more organic layers formed there-between, at least one organic layer of each of the first and second OLED elements being a light-emitting layer.Type: ApplicationFiled: September 1, 2005Publication date: November 2, 2006Inventors: Ronald Cok, Lee Tutt, Donald Preuss, Joel Shore, Yuan-Sheng Tyan, Giuseppe Farruggia
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Publication number: 20060244370Abstract: A tandem organic electroluminescent device includes an anode and a cathode. The device also includes a plurality of organic electroluminescent units disposed between the anode and the cathode, wherein each of the organic electroluminescent units includes one or more organic layers including at least a light-emitting layer and an associated light-emitting junction, connecting unit disposed between adjacent organic electroluminescent units, and wherein at least two of the neighboring light-emitting junctions are separated by a distance of less than 90 nanometers.Type: ApplicationFiled: May 2, 2005Publication date: November 2, 2006Inventors: Yuan-Sheng Tyan, Giuseppe Farruggia
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Publication number: 20060226767Abstract: An organic light-emitting device includes a substrate; a first electrode and a second electrode positioned relative to the substrate in which at least one of the electrodes is the transparent electrode; an organic light-emitting element including at least a light-emitting layer disposed between the two electrodes; and a performance enhancement layer disposed between the two electrodes; wherein the performance enhancement layer is high index and has a thickness of at least 20 nm.Type: ApplicationFiled: April 8, 2005Publication date: October 12, 2006Inventors: Yuan-Sheng Tyan, Giuseppe Farruggia, Thomas Cushman, Donald Preuss
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Publication number: 20050225234Abstract: Various OLED display and device structures are disclosed which reduce shorting.Type: ApplicationFiled: April 12, 2004Publication date: October 13, 2005Inventors: Yuan-Sheng Tyan, Giuseppe Farruggia, Thomas Cushman
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Patent number: 6917159Abstract: A microcavity OLED device including a substrate; a metallic bottom-electrode layer disposed over the substrate; a metallic top-electrode layer spaced from the metallic bottom-electrode layer; and an organic EL medium structure having a defined thickness, and including a light-emitting layer comprising a host material and at least one dopant disposed between the top-electrode layer and the bottom-electrode layer; wherein one of the metallic electrode layers is light transmissive and the other one is essentially opaque and reflective; wherein the material for reflective metallic electrode layer includes Ag, Au, Al, or alloys thereof, and the material for the light transmissive metallic electrode layer includes Ag, Au, or alloys thereof. The at least one dopant is selected to generate one of red, green, or blue light in the light-emitting layer.Type: GrantFiled: August 14, 2003Date of Patent: July 12, 2005Assignee: Eastman Kodak CompanyInventors: Yuan-Sheng Tyan, Giuseppe Farruggia, Joel D. Shore, Joseph C. Deaton, Steven A. Van Slyke