Patents by Inventor Stephen R. Forrest

Stephen R. Forrest 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).

  • Patent number: 11552247
    Abstract: An organic vapor deposition device comprises a print head, comprising a source channel, in fluid communication with a flow of carrier gas and a quantity of organic source material configured to mix with the carrier gas, a nozzle having a deposition outlet, in fluid communication with the source channel, and a shutter configured at least to open and close the deposition outlet, wherein the print heat is configured to allow the flow of carrier gas and the organic source material exit the deposition outlet when the shutter is in an open position, and to prevent the flow of carrier gas and the organic source material from exiting the deposition outlet when the shutter is in a closed position. A method of manufacturing a device comprising an organic feature on a substrate is also described.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: January 10, 2023
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Jeffrey A. Horowitz, David J. Bishop
  • Patent number: 11538953
    Abstract: The present disclosure relates to compound parabolic concentrators. In one implementation, a compound parabolic concentrator may include a parabolic array having a base, a side wall, and an aperture for receiving light and a dielectric layer having a refractive index. In another implementation, a stacked compound parabolic concentrator may include a parabolic array having a base, a side wall, and an aperture for receiving light and multiple dielectric layers within the array. Each dielectric layer may have a refractive index, and the refractive index may decrease with each dielectric layer moving from the base of the parabolic array to the light receiving aperture.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: December 27, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Kyusang Lee, Byungjun Lee
  • Patent number: 11539031
    Abstract: A number of new solutions for enhancing the extraction of waveguided mode and suppressing surface plasmon polariton mode in OLEDs are disclosed.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: December 27, 2022
    Assignee: REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Stephen R. Forrest, Yue Qu
  • Publication number: 20220399514
    Abstract: An ultra-thin shadow mask comprises a plastic foil including a plurality of apertures, wherein the ultra-thin shadow mask is less than 25 ?m thick, and wherein the ultra-thin shadow mask has a feature size of at least 1 ?m to about 100 ?m. An organic photovoltaic (OPV) device comprises a first electrode including a first grid structure, the first grid structure having a feature size of at least 1 ?m to about 100 ?m, a heterojunction under the first electrode, a second electrode under the heterojunction including a second grid structure, and a plurality of outcoupling layers over the first electrode. Related methods are also disclosed.
    Type: Application
    Filed: June 15, 2022
    Publication date: December 15, 2022
    Inventors: Stephen R. FORREST, Dejiu FAN, Xinjing Huang
  • Publication number: 20220367836
    Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 ?m to 10 ?m, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 ?m to 100 ?m, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.
    Type: Application
    Filed: May 27, 2022
    Publication date: November 17, 2022
    Inventors: Yue QU, Xiaheng Huang, Stephen R. Forrest
  • Publication number: 20220311375
    Abstract: Implementations of the disclosed subject matter provide a window, an energy and light producing device including at least one transparent photovoltaic device and at least one non-transparent Organic Light Emitting Device (OLED) in an optical path of the window. A controller may control the operation of the non-transparent OLED of the energy and light producing device. An energy storage device may be electrically coupled to the controller and the energy and light producing device to store energy generated by the transparent photovoltaic device and to power the non-transparent OLED. In some implementations, a LED or OLED may be mounted in the frame of the window and may be powered by the energy storage device.
    Type: Application
    Filed: June 13, 2022
    Publication date: September 29, 2022
    Inventors: Michael HACK, Stephen R. FORREST
  • Publication number: 20220278280
    Abstract: A method of fabricating an organic optoelectronic device comprises positioning a patterning layer over a substrate, etching the patterning layer using a photolithographic process to create an etched patterning layer, positioning a layer of an organic material over the etched patterning layer, and removing at least a portion of the etched patterning layer and at least a portion of the layer of the organic material to create a patterned organic layer over the substrate.
    Type: Application
    Filed: March 1, 2022
    Publication date: September 1, 2022
    Inventors: Stephen R. Forrest, Xinjing Huang, Dejiu Fan
  • Publication number: 20220271246
    Abstract: An organic photovoltaic device comprises a substrate, a reflector positioned over the substrate, a first electrode positioned over at least a first portion of the reflector, a polaritonic antenna layer positioned over a second portion of the reflector different from the first portion, electrically connected to the first electrode, and at least one unit reaction cell positioned over at least part of the first electrode, the at least one unit reaction cell comprising a heterojunction layer comprising a donor material and an acceptor material, positioned over the first electrode, and a second electrode positioned over the heterojunction, wherein the polaritonic antenna and the reflector are configured to convert incoming photonic energy to polaritons. A method of fabricating an organic photovoltaic device is also disclosed.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 25, 2022
    Inventors: Shaocong Hou, Stephen R. FORREST
  • Publication number: 20220271260
    Abstract: An organic light emitting device comprises an emissive layer stack having an anode side and a cathode side, comprising at least one emissive layer comprising an organic emissive material, an anode layer stack comprising at least one conductive layer, a cathode layer stack comprising at least one conductive layer, an anode-side reflector positioned on the anode side of the emissive layer stack, and a cathode-side reflector positioned on the cathode side of the emissive layer stack, wherein the anode-side reflector and the cathode side reflector are configured to form a resonant, electrically pumped cavity for ultrastrong coupling having a quality factor of at least 10. An electrically-pumped organic light emitting device is also disclosed.
    Type: Application
    Filed: January 21, 2022
    Publication date: August 25, 2022
    Inventors: Stephen R. FORREST, Haonan Zhao
  • Publication number: 20220271250
    Abstract: An organic electronic optoelectronic device comprises a substrate, a first electrode positioned over the substrate, a first organic buffer layer positioned over the first electrode, and a first inorganic emissive layer positioned over the first organic buffer layer. A method of fabricating an organic optoelectronic device is also disclosed.
    Type: Application
    Filed: January 26, 2022
    Publication date: August 25, 2022
    Inventors: Byungjun Lee, Jongchan Kim, Stephen R. Forrest
  • Publication number: 20220199932
    Abstract: An organic electronic device comprises a substrate, at least one morphological stabilizing layer positioned over the substrate, the morphological stabilizing layer comprising a material having a Tg greater than 50° C., and at least one organic layer positioned in direct contact with the morphological stabilizing layer. A method of making an organic electronic device is also disclosed.
    Type: Application
    Filed: November 17, 2021
    Publication date: June 23, 2022
    Inventors: Jongchan Kim, Stephen R. Forrest
  • Patent number: 11362311
    Abstract: Substrates are disclosed that include an embedded or partially-embedded microlens array. Devices are disclosed that include an OLED disposed over a substrate having an embedded or partially embedded micro lens array. Devices as disclosed herein redirect up to 100% of the light that otherwise would be confined in organic and electrode layers toward the substrate and thus provide improved light extraction and device efficiency.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 14, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Stephen R. Forrest, Yue Qu
  • Patent number: 11362310
    Abstract: A device including an organic light emitting diode and a dielectric layer is provided. The dielectric layer provides additional distance between a reflector and the organic emission region, leading to improved reduction in non-emissive modes and enhanced efficiency.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: June 14, 2022
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Stephen R. Forrest, Yue Qu
  • Publication number: 20220181573
    Abstract: An optoelectronic device comprises a first electrode; a first host material layer positioned over the first electrode; a second host material layer positioned over the first host material layer; at least one ultrathin dopant layer positioned between the first and second host material layers, the at least one ultrathin dopant layer having a thickness of less than 2 ?; and a second electrode positioned over the second host material layers. Other organic optoelectronic devices are also disclosed.
    Type: Application
    Filed: November 19, 2021
    Publication date: June 9, 2022
    Inventors: Stephen R . Forrest, Chan Ho Soh
  • Patent number: 11349099
    Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 ?m to 10 ?m, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 ?m to 100 ?m, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: May 31, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Yue Qu, Xiaheng Huang, Stephen R. Forrest
  • Patent number: 11342526
    Abstract: An OLED device comprises an anode and a cathode, and at least one graded emissive layer disposed between the anode and the cathode, the graded emissive layer comprising first and second materials, wherein a concentration of the first material increases continuously from an anode side of the graded emissive layer to a cathode side of the graded emissive layer, and a concentration of the second material decreases continuously from the anode side of the graded emissive layer to the cathode side of the graded emissive layer. An OLED device comprising a graded emissive layer and a hybrid white OLED device are also described.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 24, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Chan Ho Soh, Mark E. Thompson, Muazzam Idris
  • Patent number: 11329241
    Abstract: Disclosed herein are exciton-blocking treatments for buffer layers used in organic photosensitive optoelectronic devices. More specifically, the organic photosensitive optoelectronic devices described herein include at least one self-assembled monolayer disposed on the surface of an anode buffer layer. Methods of preparing these devices are also disclosed. The present disclosure further relates to methods of forming at least one self-assembled monolayer on a substrate.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: May 10, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Byeongseop Song, Jeramy D. Zimmerman
  • Publication number: 20220140254
    Abstract: Organic photovoltaic cells (OPVs) and their compositions are described herein. one or more embodiments, the acceptor with an active layer of an OPV includes is a non-fullerene acceptor. Such non-fullerene acceptors may provide improved OPV performance characteristics such as improved power conversion efficiency, open circuit voltage, fill factor, short circuit current, and/or external quantum efficiency.
    Type: Application
    Filed: November 1, 2021
    Publication date: May 5, 2022
    Inventors: Xiaheng Huang, Yongxi Li, Stephen R. Forrest
  • Publication number: 20220131100
    Abstract: An optoelectronic device comprises an anode, an emissive layer positioned over the anode, a charge generation layer stack positioned over the emissive layer, the charge generation layer stack comprising at least one hole transport layer and at least one electron transport layer positioned over the hole transport layer, and a cathode positioned over the charge generation layer stack. Other organic optoelectronic devices are also disclosed.
    Type: Application
    Filed: October 7, 2021
    Publication date: April 28, 2022
    Inventors: Stephen R . Forrest, Caleb COBURN, Yue QU
  • Patent number: 11302881
    Abstract: The present disclosure generally relates to organic photosensitive optoelectronic devices and polaron pair recombination dynamics to impact efficiency and open circuit voltages of organic solar cells. The present disclosure also relates, in part, to methods of making organic photosensitive optoelectronic devices comprising the same.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: April 12, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Noel C. Giebink