Patents by Inventor Yu-Jung Lu

Yu-Jung Lu 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: 11204514
    Abstract: Provided is a quantum dot (QD) light modulator and an apparatus including the QD light modulator. The QD light modulator may include a QD-containing layer including QDs having light-emission characteristics, a refractive index change layer arranged adjacent to the QD-containing layer, and a reflector arranged facing the QD-containing layer. The refractive index change layer may include a carrier density change area in which a carrier density changes, and the carrier density change area may be arranged adjacent to the QD-containing layer. The light-emission characteristics of the QD-containing layer may be modulated according to a change in a property of the refractive index change layer. The QD light modulator may further include a nano-antenna structure arranged on the QD-containing layer.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 21, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun Lee, Ruzan Sokhoyan, Yu-Jung Lu, Ghazaleh Kafaie Shirmanesh, Harry Atwater, Ragip Pala, Chanwook Baik
  • Patent number: 10950749
    Abstract: Provided are light emission devices including an output coupler and optical apparatuses having the same. The light emission device may include a QD layer containing quantum dots and a nano-antenna structure including an output coupler configured to control an output characteristic of light emitted from the QD layer. The output coupler may be configured to output an emission wavelength of the QD layer. The nano-antenna structure may include one of a metallic antenna, a dielectric antenna, and a slit-containing structure, or may have a multi-patch antenna structure or a fishbone antenna structure.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: March 16, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun Lee, Ruzan Sokhoyan, Yu-Jung Lu, Ghazaleh Kafaie Shirmanesh, Harry A. Atwater, Ragip A. Pala, Chan-Wook Baik
  • Patent number: 10921618
    Abstract: An optical modulating device may include a plurality of quantum dot (QD)-containing layers having QDs and a plurality of refractive index change layers. The QD-containing layers may be disposed between the refractive index change layers, respectively. The optical modulating device may be configured to modulate light-emission characteristics of the plurality of QD-containing layers. At least two of the QD-containing layers may have different central emission wavelengths. At least two of the plurality of refractive index change layers may include different materials or have different carrier densities.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: February 16, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun Lee, Ruzan Sokhoyan, Yu-Jung Lu, Ghazaleh Kafaie Shirmanesh, Harry Atwater, Ragip Pala, Chanwook Baik
  • Patent number: 10520758
    Abstract: An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: December 31, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Ruzan Sokhoyan, Harry Atwater, Ghazaleh Kafaie, Ragip Pala, Yu-Jung Lu, Ho Wai Lee, Yao-Wei Huang, Krishnan Thyagarajan
  • Publication number: 20190131491
    Abstract: Provided are light emission devices including an output coupler and optical apparatuses having the same. The light emission device may include a QD layer containing quantum dots and a nano-antenna structure including an output coupler configured to control an output characteristic of light emitted from the QD layer. The output coupler may be configured to output an emission wavelength of the QD layer. The nano-antenna structure may include one of a metallic antenna, a dielectric antenna, and a slit-containing structure, or may have a multi-patch antenna structure or a fishbone antenna structure.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun LEE, Ruzan SOKHOYAN, Yu-Jung LU, Ghazaleh KAFAIE SHIRMANESH, Harry A. ATWATER, Ragip A. PALA, Chan-Wook BAIK
  • Publication number: 20190129206
    Abstract: An optical modulating device may include a plurality of quantum dot (QD)-containing layers having QDs and a plurality of refractive index change layers. The QD-containing layers may be disposed between the refractive index change layers, respectively. The optical modulating device may be configured to modulate light-emission characteristics of the plurality of QD-containing layers. At least two of the QD-containing layers may have different central emission wavelengths. At least two of the plurality of refractive index change layers may include different materials or have different carrier densities.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun LEE, Ruzan SOKHOYAN, Yu-Jung LU, Ghazaleh KAFAIE SHIRMANESH, Harry ATWATER, Ragip PALA, Chanwook BAIK
  • Publication number: 20190107740
    Abstract: Provided is a quantum dot (QD) light modulator and an apparatus including the QD light modulator. The QD light modulator may include a QD-containing layer including QDs having light-emission characteristics, a refractive index change layer arranged adjacent to the QD-containing layer, and a reflector arranged facing the QD-containing layer. The refractive index change layer may include a carrier density change area in which a carrier density changes, and the carrier density change area may be arranged adjacent to the QD-containing layer. The light-emission characteristics of the QD-containing layer may be modulated according to a change in a property of the refractive index change layer. The QD light modulator may further include a nano-antenna structure arranged on the QD-containing layer.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 11, 2019
    Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Duhyun LEE, Ruzan SOKHOYAN, Yu-Jung LU, Ghazaleh Kafaie SHIRMANESH, Harry ATWATER, Ragip PALA, Chanwook BAIK
  • Publication number: 20180292681
    Abstract: An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon HAN, Ruzan SOKHOYAN, Harry ATWATER, Ghazaleh KAFAIE, Ragip PALA, Yu-Jung LU, Ho Wai LEE, Yao-Wei HUANG, Krishnan THYAGARAJAN
  • Patent number: 10012851
    Abstract: An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: July 3, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Ruzan Sokhoyan, Harry Atwater, Ghazaleh Kafaie, Ragip Pala, Yu-Jung Lu, Ho Wai Lee, Yao-Wei Huang, Krishnan Thyagarajan
  • Publication number: 20170031183
    Abstract: An optical modulating device includes a permittivity change layer having a variable permittivity, a dielectric layer disposed on the permittivity change layer, a nanoantenna disposed on the dielectric layer, and a light-emitting structure disposed adjacent to the permittivity change layer.
    Type: Application
    Filed: July 20, 2016
    Publication date: February 2, 2017
    Applicants: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon HAN, Ruzan SOKHOYAN, Harry ATWATER, Ghazaleh KAFAIE, Ragip PALA, Yu-Jung LU, Ho Wai LEE, Yao-Wei HUANG, Krishnan THYAGARAJAN
  • Patent number: 8835903
    Abstract: This invention relates light-emitting diode displays with simple structure and fabricating method as well as excellent efficiency. In an embodiment, the display features a nanorod LED array arranged on a substrate and divided into a first, second, and third sub-pixels. Two electrodes are preferably arranged in a vertical configuration for driving the sub-pixels. In another embodiment, a method features the sub-pixels for emitting multi-primary colors being formed on a conductive substrate and thus simplifies the steps.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: September 16, 2014
    Assignee: National Tsing Hua University
    Inventors: Shang-Jr Gwo, Yu-Jung Lu
  • Patent number: 8669128
    Abstract: This invention relates to structures and fabricating methods of light-emitting diodes capable of emitting white or a color within full-visible-spectrum with better efficiency and flexibility. An embodiment provides a light-emitting diode array consisted of one or more light-emitting diodes on a substrate. Each light-emitting diode comprises a first doped nanorod, an active light-emitting region consisted of one or more nanodisks on the first doped nanorod, and a second doped nanorod on the active light-emitting region. Another embodiment provides a fabricating method of the light-emitting diode array.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: March 11, 2014
    Assignee: National Tsing Hua University
    Inventors: Shang-Jr Gwo, Hon-Way Lin, Yu-Jung Lu
  • Publication number: 20120223289
    Abstract: This invention relates light-emitting diode displays with silmple structure and fabricating method as well as excellent efficiency. In an embodiment, the display features a nanorod LED array arranged on a substrate and divided into a first, second, and third sub-pixels. Two electrodes are preferably arranged in a vertical configuration for driving the sub-pixels. In another embodiment, a method features the sub-pixels for emitting multi-primary colors being formed on a conductive substrate and thus simplifies the steps.
    Type: Application
    Filed: May 14, 2012
    Publication date: September 6, 2012
    Applicant: National Tsing Hua University
    Inventors: Shang-Jr GWO, Yu-Jung Lu
  • Patent number: 8242523
    Abstract: Embodiments of the present invention provides III-nitride light-emitting diodes, which primarily include a first electrode, a n-type gallium nitride (GaN) nanorod array consisted of one or more n-type GaN nanorods ohmic contacting with the first electrode, one or more indium gallium nitride (InGaN) nanodisks disposed on each of the n-type GaN nanorods, a p-type GaN nanorod array consisted of one or more p-type GaN nanorods, where one p-type GaN nanorod is disposed on top of the one ore more InGaN nanodisks disposed on each of the n-type GaN nanorods, and a second electrode ohmic contacts with the p-type GaN nanorod array.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: August 14, 2012
    Assignee: National Tsing Hua University
    Inventors: Shang-Jr Gwo, Hon-Way Lin, Yu-Jung Lu
  • Publication number: 20120097920
    Abstract: This invention relates to structures and fabricating methods of light-emitting diodes capable of emitting white or a color within full-visible-spectrum with better efficiency and flexibility. An embodiment provides a light-emitting diode array consisted of one or more light-emitting diodes on a substrate. Each light-emitting diode comprises a first doped nanorod, an active light-emitting region consisted of one or more nanodisks on the first doped nanorod, and a second doped nanorod on the active light-emitting region. Another embodiment provides a fabricating method of the light-emitting diode array.
    Type: Application
    Filed: December 22, 2011
    Publication date: April 26, 2012
    Inventors: Shang-Jr GWO, Hon-Way Lin, Yu-Jung Lu
  • Publication number: 20120025232
    Abstract: Embodiments of the present invention provides III-nitride light-emitting diodes, which primarily include a first electrode, a n-type gallium nitride (GaN) nanorod array consisted of one or more n-type GaN nanorods ohmic contacting with the first electrode, one or more indium gallium nitride (InGaN) nanodisks disposed on each of the n-type GaN nanorods, a p-type GaN nanorod array consisted of one or more p-type GaN nanorods, where one p-type GaN nanorod is disposed on top of the one ore more InGaN nanodisks disposed on each of the n-type GaN nanorods, and a second electrode ohmic contacts with the p-type GaN nanorod array.
    Type: Application
    Filed: July 29, 2010
    Publication date: February 2, 2012
    Applicant: National Tsing Hua University
    Inventors: Shang-Jr GWO, Hon-Way Lin, Yu-Jung Lu
  • Patent number: 6637060
    Abstract: A pair of pliers for connecting a telephone line connector. The pliers have a compression connecting block connected with a limiting pin inserted in a limiting hole preferably of a triangular shape on one handle of the pliers. The upper edge of the limiting hole has an abutting edge bevel relative to a push guiding edge of the limiting hole. When the abutting edge contacts and presses the limiting pin, the contact point therebetween is located next to the center of the limiting pin towards the direction of an action force such that the component force of a resisting force from the center of the limiting pin towards the contact point is at the same side as that of the action force. Thus, the horizontal component force of the action force can be reduced; and the abrasion that the horizontal force component may cause on the guiding groove can be reduced.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: October 28, 2003
    Assignee: Hanlong Ind. Co., Ltd.
    Inventor: Yu-Jung Lu
  • Publication number: 20030066136
    Abstract: A pair of pliers for compression connecting a connector for a telephone line, the pliers have a compression connecting block connected with a limiting pin inserted in a limiting hole generally of a triangular shape on one handle of the pliers, the upper edge of the limiting hole is an abutting edge bevel relative to a push guiding edge of the limiting hole, when the abutting edge contacts and presses the limiting pin, the contact point between them is located beside the center of the limiting pin toward the direction where an action force directs to. So that the component force of a resisting force from the center of the limiting pin toward the contact point is at the same side as that of the action force. Thereby, the horizontal component force of the action force can be reduced; the abrasion that the horizontal force component may make on the guiding groove can be lowered.
    Type: Application
    Filed: October 5, 2001
    Publication date: April 10, 2003
    Applicant: Hanlong Ind. Co., Ltd
    Inventor: Yu-Jung Lu
  • Patent number: 6513198
    Abstract: A plastic handle structure of a clamp tool, wherein, a hard plastic layer is provided on the two lateral edge areas of the bottom plate thereof with two lateral edge portions for a fitting-over portion, and the opening of the fitting-over portion per se is provided with two lateral edge portions, the top of the hard plastic layer is cut to open. A transversely directed die block for shaping the fitting-over portion fills soft plastic material in the lateral edge portions for the fitting-over portion, the lateral edge portions of the fitting-over opening and the top cut portion during a soft plastic layer enveloping process, enveloping and filling processes of the soft plastic layer are thus completed, and the structure of the fitting-over portion can be shaped. In the entire operation for the plastic handle, the hard plastic layer can be molded from an upper and a lower die in order to reduce the waiting time to do the enveloping process of the soft plastic layer.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: February 4, 2003
    Assignee: Hanlong Industrial Co., Ltd.
    Inventor: Yu-Jung Lu
  • Patent number: D960226
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: August 9, 2022
    Inventor: Yu-Jung Lu