Patents by Inventor Seong Taek Lee

Seong Taek Lee 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: 10581292
    Abstract: A multi-phase electric machine having plurality of windings are mounted on the stator core that define a plurality of phases wherein, for each phase, the windings include at least two parallel windings, each winding comprising a pair of continuous wires which are connected in series. For each pole, the parallel windings fill one or more central slots and two outer slots. Each winding fills each central slot twice the number of times that the winding fills each outer slot to thereby define a slot fill ratio of 2:1 between central slots and outer slots and wherein each wire of the wire pair forming a winding fills the slots in a ratio that differs from the slot fill ratio. Each of the parallel windings include a phase shift end loop that shift the windings from one outer slot to the other outer slot.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: March 3, 2020
    Assignee: BORGWARNER INC.
    Inventors: Kirk E. Neet, Seong Taek Lee
  • Publication number: 20200041707
    Abstract: Optical stacks are described. In particular, optical stacks including reflecting-absorbing polarizers and quarter-wave plates are disclosed. The optical core of the optical stack—which includes a reflecting-absorbing polarizer with at least one skin layer including polarizing dye—may be co-extruded or co-stretched.
    Type: Application
    Filed: September 25, 2019
    Publication date: February 6, 2020
    Inventors: Matthew B. Johnson, Adam D. Haag, Seong Taek Lee, Brianna N. Nieson, Kristy A. Gillette, Michelle L. Toy
  • Patent number: 10541576
    Abstract: An electric machine including a stator and rotor. The rotor has a core wherein each pole includes first and second axially extending magnet slots positioned in an outwardly opening V-shape. Permanent magnets are positioned in the magnet slots. The magnet slots define first and second opposing major edges wherein the first major edge is disposed nearer the outer radial perimeter of the rotor core. First and second opposing minor edges extend between the major edges and the first minor edge is disposed nearer the outer radial perimeter. The first and second slots are reflectively symmetrical with one symmetrical aberration. The symmetrical aberration being formed by an axially extending non-symmetric gap defined by the first major edge of the second magnet slot proximate the first minor edge. Demagnetization may be reduced by operating the machine with the second magnet slot trailing the first magnet slot during rotation of the rotor.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: January 21, 2020
    Assignee: BorgWarner, Inc.
    Inventor: Seong Taek Lee
  • Patent number: 10475858
    Abstract: The present disclosure describes nanostructured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: November 12, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Martin B. Wolk, Seong Taek Lee, Michael Benton Free, Nicholas C. Erickson
  • Patent number: 10466398
    Abstract: Optical stacks are described. In particular, optical stacks including reflecting-absorbing polarizers and quarter-wave plates are disclosed. The optical core of the optical stack—which includes a reflecting-absorbing polarizer with at least one skin layer including polarizing dye—may be co-extruded or co-stretched.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 5, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew B. Johnson, Adam D. Haag, Seong Taek Lee, Brianna N. Nieson, Kristy A. Gillette, Michelle L. Toy
  • Publication number: 20190271852
    Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.
    Type: Application
    Filed: May 22, 2019
    Publication date: September 5, 2019
    Inventors: Joseph C. Carls, Seong Taek Lee, Yeow Leng Teo, Kin Sheng Chan, Xiaohui Cheng
  • Patent number: 10345610
    Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: July 9, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Joseph C. Carls, Seong Taek Lee, Yeow Leng Teo, Kin Sheng Chan, Xiaohui Cheng
  • Publication number: 20190149001
    Abstract: An electric machine including a rotor operably coupled with a stator having a plurality of stator windings. Each stator winding defines has a plurality of axially extending segments disposed within the stator slots and a plurality of end turn segments. At least one first axially extending segment defining a first cross sectional area and at least two second axially extending segments defining a smaller second cross sectional area are disposed in each of the stator slots. At least one of the plurality of end turn segments conductively couples a single first axially extending segment in a first one of the plurality of slots to at least two second axially extending segments in a second one of the plurality of slots. In some embodiments, the larger first axially extending segments are all disposed radially outwardly of the smaller second axially extending segments. The windings may be formed using hairpin conductors.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 16, 2019
    Inventor: Seong Taek Lee
  • Publication number: 20180358851
    Abstract: An electric machine including a stator and rotor. The rotor has a core wherein each pole includes first and second axially extending magnet slots positioned in an outwardly opening V-shape. Permanent magnets are positioned in the magnet slots. The magnet slots define first and second opposing major edges wherein the first major edge is disposed nearer the outer radial perimeter of the rotor core. First and second opposing minor edges extend between the major edges and the first minor edge is disposed nearer the outer radial perimeter. The first and second slots are reflectively symmetrical with one symmetrical aberration. The symmetrical aberration being formed by an axially extending non-symmetric gap defined by the first major edge of the second magnet slot proximate the first minor edge. Demagnetization may be reduced by operating the machine with the second magnet slot trailing the first magnet slot during rotation of the rotor.
    Type: Application
    Filed: June 12, 2017
    Publication date: December 13, 2018
    Inventor: Seong Taek Lee
  • Publication number: 20180294317
    Abstract: The present disclosure describes nanostructured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Inventors: Martin B. Wolk, Seong Taek Lee, Michael Benton Free, Nicholas C. Erickson
  • Publication number: 20180172888
    Abstract: Optical stacks are described. In particular, optical stacks including reflecting-absorbing polarizers and quarter-wave plates are disclosed. The optical core of the optical stack—which includes a reflecting-absorbing polarizer with at least one skin layer including polarizing dye—may be co-extruded or co-stretched.
    Type: Application
    Filed: June 13, 2016
    Publication date: June 21, 2018
    Inventors: Matthew B. Johnson, Adam D. Haag, Seong Taek Lee, Brianna N. Nieson, Kristy A. Gillette, Michelle L. Toy
  • Patent number: 9997573
    Abstract: The present disclosure describes nano-structured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 12, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Martin B. Wolk, Seong Taek Lee, Michael Benton Free, Nicholas C. Erickson
  • Publication number: 20180034335
    Abstract: A multi-phase electric machine having plurality of windings are mounted on the stator core that define a plurality of phases wherein, for each phase, the windings include at least two parallel windings, each winding comprising a pair of continuous wires which are connected in series. For each pole, the parallel windings fill one or more central slots and two outer slots. Each winding fills each central slot twice the number of times that the winding fills each outer slot to thereby define a slot fill ratio of 2:1 between central slots and outer slots and wherein each wire of the wire pair forming a winding fills the slots in a ratio that differs from the slot fill ratio. Each of the parallel windings include a phase shift end loop that shift the windings from one outer slot to the other outer slot.
    Type: Application
    Filed: July 18, 2017
    Publication date: February 1, 2018
    Inventors: Kirk E. Neet, Seong Taek Lee
  • Patent number: 9773847
    Abstract: The disclosure relates to emissive displays and, in particular, to emissive displays that include a top surface (111) that has a diffusely reflective inactive surface (116) adjacent a diffusely reflective emissive surface (114). The emissive display further includes a polarization selective antireflection film component (120) that includes a linear absorbing polarizer (126), a reflective polarizer (124), and a quarter-wave retarder (122), and is positioned separated from the top surface. The disclosure also relates to issues arising from these antireflection film components, such as brightness efficiency loss and image degradation such as pixel blur. The enhanced antireflection stack performs well in commercial OLED displays, with a 20% or greater brightness gain, a 30% or greater ambient light reflectance gain and no visually apparent image degradation.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: September 26, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Kenneth A. Epstein, Adam D. Haag, Seong Taek Lee, Sergey Lamansky
  • Patent number: 9761843
    Abstract: An emissive display comprising an OLED, a first birefringent reflective polarizer, a second birefringent reflective polarizer optically between the OLED and the first birefringent reflective polarizer, a first linear absorbing polarizer having a contrast ratio of less than 100:1 optically between the first birefringent reflective polarizer and the second birefringent reflective polarizer, a second linear absorbing polarizer having a contrast ratio of less than 100:1, where the first birefringent reflective polarizer is optically between the second linear absorbing polarizer and the first linear absorbing polarizer, and a structured optical film optically between the OLED and the second birefringent reflective polarizer.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: September 12, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Adam D. Haag, Ghidewon Arefe, Kenneth A. Epstein, Nathaniel K. Naismith, Seong Taek Lee, Sergey Lamansky, William A. Tolbert
  • Publication number: 20170084669
    Abstract: The present disclosure describes nano-structured light extraction color filter laminates, and articles and methods of using nanostructured light extraction color filter laminates for the fabrication of an OLED including a nanostructure, using lamination techniques. Nanostructured OLED devices can exhibit enhanced light extraction efficiency. The methods involve transfer and/or replication of a film, layer, or coating in order to form a nanostructured surface that is in optical contact with the emitting surface of an OLED in, for example, a top emitting or a bottom emitting active matrix OLED (TE-AMOLED or BE-AMOLED) device. The articles having enhanced light extraction efficiency can be of particular use in color-by-white (CBW) OLED displays, which use white-light spectrum OLEDs with a color filter array.
    Type: Application
    Filed: March 19, 2015
    Publication date: March 23, 2017
    Inventors: Martin B. Wolk, Seong Taek Lee, Michael Benton Free, Nicholas C. Erickson
  • Publication number: 20170075126
    Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Inventors: Joseph C. Carls, Seong Taek Lee, Yeow Leng Tao, Kin Sheng Chan, Xiaohui Cheng
  • Patent number: 9535256
    Abstract: Polarizing beam splitters and systems incorporating such beam splitters are described. More specifically, polarizing beam splitters and systems with such beam splitters that incorporate multilayer optical films and reflect imaged light towards a viewer or viewing screen with high effective resolution are described.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: January 3, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Joseph C. Carls, Seong Taek Lee, Yeow Leng Teo, Kin Sheng Chan, Xiaohui Cheng
  • Publication number: 20160118448
    Abstract: The disclosure relates to emissive displays and, in particular, to emissive displays that include a top surface (111) that has a diffusely reflective inactive surface (116) adjacent a diffusely reflective emissive surface (114). The emissive display further includes a polarization selective antireflection film component (120) that includes a linear absorbing polarizer (126), a reflective polarizer (124), and a quarter-wave retarder (122), and is positioned separated from the top surface. The disclosure also relates to issues arising from these antireflection film components, such as brightness efficiency loss and image degradation such as pixel blur. The enhanced antireflection stack performs well in commercial OLED displays, with a 20% or greater brightness gain, a 30% or greater ambient light reflectance gain and no visually apparent image degradation.
    Type: Application
    Filed: June 4, 2014
    Publication date: April 28, 2016
    Inventors: Kenneth A. Epstein, Adam D. Haag, Seong Taek Lee, Sergey Lamansky
  • Patent number: RE47781
    Abstract: An organic electro luminescent display with auxiliary layers on a cathode contact and an encapsulating junction region to easily remove polymer organic layers of the junction and a method for fabricating the same. The organic electro luminescent display has the first electrode formed on a lower insulating substrate, a pixel defining layer formed to make some portions of the first electrode opened over the entire surface of the lower insulating substrate, an organic emission layer formed on an opening of the first electrode, the second electrode formed on the organic emission layer, an upper substrate for encapsulating the first electrode, the organic emission layer and the second electrode, and auxiliary layers formed on the cathode contact and the encapsulating junction region of the lower insulating substrate.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: December 24, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Min Kang, Myung-Won Song, Seong-Taek Lee, Jin-Woo Park, Hun Kim