Patents by Inventor Yuan-Sheng Tyan
Yuan-Sheng Tyan 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: 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: 8057916Abstract: An OLED device includes an anode, a cathode, and at least one individually selected organic light-emitting layer disposed between the anode and cathode. The device also includes an electron-transporting layer disposed between the at least one light-emitting layer and the cathode, such electron-transporting layer including a first electron-transporting material, and an electron-injecting layer disposed between the electron-transporting layer and the cathode, such electron-injecting layer including a metal dopant having a work function less than 4.0 eV and an electron-transporting material that is different from the first electron-transporting material.Type: GrantFiled: April 20, 2005Date of Patent: November 15, 2011Assignee: Global OLED Technology, LLC.Inventors: Tukaram K. Hatwar, Liang-Sheng Liao, Yuan-Sheng Tyan, Steven A. Van Slyke
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Patent number: 8034465Abstract: An organic light-emitting device comprising an anode; a cathode; a hole-transporting layer disposed between the anode and the cathode; a phosphorescent light-emitting layer disposed between the hole-transporting layer and the cathode, wherein the phosphorescent light-emitting layer includes at least one host and at least one phosphorescent dopant; a first exciton-blocking layer disposed between the hole-transporting layer and the phosphorescent light-emitting layer; wherein the first exciton-blocking layer has a triplet energy greater than the triplet energy of the host in the phosphorescent light-emitting layer; and a second exciton-blocking layer disposed between the first exciton-blocking layer and the phosphorescent light-emitting layer, wherein the second exciton-blocking layer is in contact with the phosphorescent light-emitting layer, and wherein the second exciton-blocking layer has a triplet energy less than the triplet energy of the first exciton-blocking layer.Type: GrantFiled: June 20, 2007Date of Patent: October 11, 2011Assignee: Global OLED Technology LLCInventors: Liang-Sheng Liao, Xiaofan Ren, Cynthia A. Pellow, Yuan-Sheng Tyan
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Publication number: 20110204385Abstract: A method of depositing a layer onto a substrate, comprising heating an evaporator to a temperature capable of completely evaporating the evaporant to be deposited, dispensing into the evaporator one or more quantized units of the evaporant where the evaporant is completely vaporized, providing an area vapor dispenser having a plurality of apertures, and directing the vaporized evaporant from the evaporator to the area vapor dispenser so that the evaporant is dispensed through the apertures to deposit the layer on the substrate.Type: ApplicationFiled: April 20, 2011Publication date: August 25, 2011Inventors: Yuan-Sheng TYAN, Michael Long, Giana M. Phelan, Thomas R. Cushman
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Patent number: 7951421Abstract: A method of depositing a layer onto a substrate, comprising heating an evaporator to a temperature capable of completely evaporating the evaporant to be deposited, dispensing into the evaporator one or more quantized units of the evaporant where the evaporant is completely vaporized, providing an area vapor dispenser having a plurality of apertures, and directing the vaporized evaporant from the evaporator to the area vapor dispenser so that the evaporant is dispensed through the apertures to deposit the layer on the substrate.Type: GrantFiled: April 20, 2006Date of Patent: May 31, 2011Assignee: Global OLED Technology LLCInventors: Yuan-Sheng Tyan, Michael Long, Giana M. Phelan, Thomas R. 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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Patent number: 7888858Abstract: An light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors.Type: GrantFiled: August 21, 2007Date of Patent: February 15, 2011Assignee: Global OLED Technology LLCInventors: Ronald S. Cok, Joel D. Shore, Yuan-Sheng Tyan, Donald R. Preuss
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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: 7859188Abstract: A light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors. Additionally, a reflected-light absorbing layer is located over all of the light-emitting elements.Type: GrantFiled: August 21, 2007Date of Patent: December 28, 2010Assignee: Global OLED Technology LLCInventors: Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore, Donald R. Preuss
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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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Patent number: 7687990Abstract: In an OLED device having a substrate, a first electrode layer disposed over the substrate, an inorganic short reduction layer disposed over the first electrode layer, an organic electroluminescent medium disposed over the short reduction layer, and a second electrode layer over the electroluminescent medium, a feature is the inclusion of a mixture of ZnS, SiO2, and ITO in the short reduction layer wherein the ratio of In atoms to Zn atoms is in the range of from 0.90 to 2.37.Type: GrantFiled: April 12, 2007Date of Patent: March 30, 2010Assignee: Global OLED Technology LLCInventors: Dustin L. Winters, Yuan-Sheng Tyan, Ansuman Banerjee, Thomas R. Cushman, Steven A. Van Slyke
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Patent number: 7602118Abstract: An organic light-emitting diode (OLED) device, comprising: a substrate; an OLED comprising first and second electrodes and one or more layers of organic light-emitting material formed between the electrodes, wherein at least one electrode comprises a transparent electrode, the transparent electrode and layer(s) of organic light-emitting material having a first refractive index range; and an encapsulating cover; wherein at least one of the substrate or cover comprises a transparent substrate or cover having a second refractive index and through which light from the OLED is emitted; and further comprising a light scattering layer located between the substrate and cover, and a transparent low-index element having a third refractive index lower than each of the first refractive index range and second refractive index and located between the scattering layer and the transparent substrate or cover.Type: GrantFiled: February 24, 2005Date of Patent: October 13, 2009Assignee: Eastman Kodak CompanyInventors: Ronald S. Cok, Donald R. Preuss, Yuan-Sheng Tyan
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Patent number: 7594839Abstract: A top-emitting organic light-emitting diode (OLED) device, comprising: a substrate; an OLED comprising a reflective electrode formed on the substrate; one-or-more layers of organic light-emitting material formed over the reflective electrode; and a transparent electrode formed over the one-or-more layers of organic light-emitting material; a light-scattering layer having a rough surface formed over and in contact with the OLED, a cover affixed to the substrate forming a gap between the cover and the light scattering layer; and wherein the gap is a vacuum or the gap is filled with a relatively low-refractive index gas and the light-scattering layer comprises a plurality of relatively high-refractive index light-scattering transparent particles projecting into the gap without contacting the cover and further comprising an adhesive binder in contact with at least some of the light-scattering particles to adhere the light-scattering particles to the OLED.Type: GrantFiled: February 24, 2006Date of Patent: September 29, 2009Assignee: Eastman Kodak CompanyInventors: Ronald S. Cok, Jin-Shan Wang, Raymond A. Kesel, Donald R. Preuss, Yuan-Sheng Tyan
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Patent number: 7564181Abstract: 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: GrantFiled: April 8, 2005Date of Patent: July 21, 2009Assignee: Eastman Kodak CompanyInventors: Yuan-Sheng Tyan, Guiseppe Farruggia, Thomas R. Cushman, Donald R. Preuss
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Patent number: 7535646Abstract: A light-emitting device, comprising: a light emitting element on a first side of a transparent substrate or cover through which light is emitted; and a microlens array on a second side, opposite to the first side, of the transparent substrate or cover though which light is emitted; wherein the microlens array comprises individual hemispherical shaped microlenses having a mean diameter of less than 20 micrometers and a mean microlens height to diameter ratio of greater than 0.30, and has a microlens area fill factor greater than 0.8.Type: GrantFiled: April 27, 2007Date of Patent: May 19, 2009Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, Charles W. Lander, Jin-Shan Wang, Donald R. Preuss, Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore
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Publication number: 20090051283Abstract: A light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors. Additionally, a reflected-light absorbing layer is located over all of the light-emitting elements.Type: ApplicationFiled: August 21, 2007Publication date: February 26, 2009Inventors: Ronald S. Cok, Yuan-Sheng Tyan, Joel D. Shore, Donald R. Preuss
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Publication number: 20090051284Abstract: An light-emitting diode device, including a substrate; and a reflective electrode and a semi-transparent electrode formed over the substrate and an unpatterned white light-emitting layer formed between the reflective electrode and the semi-transparent electrode, the reflective electrode, semi-transparent electrode, and unpatterned white-light-emitting layer forming an optical microcavity, and wherein either the reflective or semi-transparent electrodes is patterned to form a plurality of independently controllable light-emitting elements with at least one light-emitting element having no color filter. Color filters are formed over a side of the semi-transparent electrodes opposite the unpatterned white light-emitting layer in correspondence with the light-emitting elements, the color filters having at least two different colors.Type: ApplicationFiled: August 21, 2007Publication date: February 26, 2009Inventors: Ronald S. Cok, Joel D. Shore, Yuan-Sheng Tyan, Donald R. Preuss
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Publication number: 20080315753Abstract: An organic light-emitting device comprising an anode; a cathode; a hole-transporting layer disposed between the anode and the cathode; a phosphorescent light-emitting layer disposed between the hole-transporting layer and the cathode, wherein the phosphorescent light-emitting layer includes at least one host and at least one phosphorescent dopant; a first exciton-blocking layer disposed between the hole-transporting layer and the phosphorescent light-emitting layer; wherein the first exciton-blocking layer has a triplet energy greater than the triplet energy of the host in the phosphorescent light-emitting layer; and a second exciton-blocking layer disposed between the first exciton-blocking layer and the phosphorescent light-emitting layer, wherein the second exciton-blocking layer is in contact with the phosphorescent light-emitting layer, and wherein the second exciton-blocking layer has a triplet energy less than the triplet energy of the first exciton-blocking layer.Type: ApplicationFiled: June 20, 2007Publication date: December 25, 2008Inventors: Liang-Sheng Liao, Xiaofan Ren, Cynthia A. Pellow, Yuan-Sheng Tyan
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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: 20080252208Abstract: In an OLED device having a substrate, a first electrode layer disposed over the substrate, an inorganic short reduction layer disposed over the first electrode layer, an organic electroluminescent medium disposed over the short reduction layer, and a second electrode layer over the electroluminescent medium, a feature is the inclusion of a mixture of ZnS, SiO2, and ITO in the short reduction layer wherein the ratio of In atoms to Zn atoms is in the range of from 0.90 to 2.37.Type: ApplicationFiled: April 12, 2007Publication date: October 16, 2008Inventors: Dustin L. Winters, Yuan-Sheng Tyan, Ansuman Banerjee, Thomas R. Cushman, Steven A. Van Slyke