Patents by Inventor Wan-Ho Lee

Wan-Ho 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).

  • Publication number: 20240154118
    Abstract: Cathode active materials for lithium secondary batteries and lithium secondary batteries including the cathode active materials are disclosed. In some implementations, a cathode active material for a lithium secondary battery includes a lithium metal phosphate particle having a crystallite size in a range from 150 nm to 450 nm in a direction of a crystallographic plane (020) as measured by an X-ray diffraction (XRD) analysis. In some implementations, a lithium secondary battery includes a cathode including a cathode active material layer that includes a cathode active material for a lithium secondary battery, and an anode facing the cathode. In some implementations, an electrode crystallite size ratio defined by Equation 4 is in a range from 0.5 to 0.9.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Inventors: Ji Yae DO, Min Suk KANG, Min Cheol BEAK, Kwang Ho LEE, Wan Uk CHOI
  • Patent number: 11977703
    Abstract: A touch detection module, includes: a plurality of driving electrodes arranged side by side; a plurality of sensing electrodes staggered with respect to the driving electrodes; and a touch driving circuit configured to supply touch driving signals to the plurality of driving electrodes and to detect touch detection signals through the plurality of sensing electrodes to identify touch position coordinates, wherein the touch driving circuit is configured: to vary frequency modulation parameter set values in response to a change in a frequency of reference clocks, and to generate and supply a frequency of the touch driving signals by using the reference clocks and a varied frequency modulation parameter set value.
    Type: Grant
    Filed: February 24, 2023
    Date of Patent: May 7, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Woo Park, Min Hong Kim, Tae Joon Kim, Il Ho Lee, Wan Kee Jun
  • Patent number: 11967630
    Abstract: A semiconductor device is provided. The semiconductor device comprising a multi-channel active pattern on a substrate, a high dielectric constant insulating layer formed along the multi-channel active pattern on the multi-channel active pattern, wherein the high dielectric constant insulating layer comprises a metal, a silicon nitride layer formed along the high dielectric constant insulating layer on the high dielectric constant insulating layer and a gate electrode on the silicon nitride layer.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: April 23, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Hoon Lee, Wan Don Kim, Jong Ho Park, Sang Jin Hyun
  • Publication number: 20240128510
    Abstract: The present invention relates to a novel electrolyte and a secondary battery including the same. The present invention has an effect of providing a secondary battery having improved charging efficiency and output due to reduced charging resistance and having excellent long-term lifespan and high-temperature capacity retention rate.
    Type: Application
    Filed: December 24, 2021
    Publication date: April 18, 2024
    Inventors: Ji Young CHOI, Min Goo KIM, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Min Jung JANG
  • Patent number: 11949012
    Abstract: A semiconductor device including: a first transistor which include a first gate stack on a substrate; and a second transistor which includes a second gate stack on the substrate, wherein the first gate stack includes a first ferroelectric material layer disposed on the substrate, a first work function layer disposed on the first ferroelectric material layer and a first upper gate electrode disposed on the first work function layer, wherein the second gate stack includes a second ferroelectric material layer disposed on the substrate, a second work function layer disposed on the second ferroelectric material layer and a second upper gate electrode disposed on the second work function layer, wherein the first work function layer includes the same material as the second work function layer, and wherein an effective work function of the first gate stack is different from an effective work function of the second gate stack.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: April 2, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Ho Park, Wan Don Kim, Weon Hong Kim, Hyeon Jun Baek, Byoung Hoon Lee, Jeong Hyuk Yim, Sang Jin Hyun
  • Publication number: 20240105991
    Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 28, 2024
    Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
  • Publication number: 20240097189
    Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 21, 2024
    Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
  • Publication number: 20240097188
    Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 21, 2024
    Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
  • Publication number: 20240097190
    Abstract: The present invention relates to an electrolyte solution and a secondary battery including the same. According to the present invention, the present invention has an effect of providing a secondary battery having improved charging efficiency and output due to low discharge resistance and having a long lifespan and excellent high-temperature capacity retention by suppressing gas generation and increase in thickness.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 21, 2024
    Inventors: Min Jung JANG, Min Goo KIM, Young Rok LIM, Ji Young CHOI, Sang Ho LEE, Wan Chul KANG, Jong Cheol YUN, Ji Seong HAN, Hee Jeong RYU, Jae Won CHUNG
  • Patent number: 10845752
    Abstract: Disclosed herein is an image forming apparatus. The image forming apparatus includes at least one pressing unit configured to bring the developing roller and the photoreceptor in contact with each other, an operating unit which is configured to be in an operating position during which a pressing force of the pressing unit is generated, and a standby during at which the pressing force is released, and a cover unit detachably provided to one side of the developing device and configured to guide movement of the operating unit to the operating position. By this configuration, operation of the operating unit is linked with an operation of detachment or attachment of the cover unit.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: November 24, 2020
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Wan Ho Lee, Jin Ho Park, Han Jun Lee
  • Patent number: 10642183
    Abstract: An image forming device comprises: an exposer having a plurality of light emitting devices, a light emitting device among the plurality of light emitting devices to transmit light toward a photosensitive drum; and a developer to develop an electrostatic latent image formed on a surface of the photosensitive drum by the light, wherein the light emitting device among the plurality of light emitting devices includes: a light emitting layer to generate the light; and a reflective layer to reflect at least a portion of the generated light. The reflective layer can include a plurality of sub-reflective layers, in which a thickness of a sub-reflective layer among the plurality of sub-reflective layers is different from a thickness of another sub-reflective layer among the plurality of sub-reflective layers, and/or a refractive index of a sub-reflective layer among the plurality of sub-reflective layers is different from a refractive index of another sub-reflective layer among the plurality of sub-reflective layers.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: May 5, 2020
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Wan Chin Kim, Wan Ho Lee, Kyoung Man Kim, Su Hwan Kim, Yong Shik Park, Sang Koo Han
  • Publication number: 20190064693
    Abstract: An image forming device comprises: an exposer having a plurality of light emitting devices, a light emitting device among the plurality of light emitting devices to transmit light toward a photosensitive drum; and a developer to develop an electrostatic latent image formed on a surface of the photosensitive drum by the light, wherein the light emitting device among the plurality of light emitting devices includes: a light emitting layer to generate the light; and a reflective layer to reflect at least a portion of the generated light. The reflective layer can include a plurality of sub-reflective layers, in which a thickness of a sub-reflective layer among the plurality of sub-reflective layers is different from a thickness of another sub-reflective layer among the plurality of sub-reflective layers, and/or a refractive index of a sub-reflective layer among the plurality of sub-reflective layers is different from a refractive index of another sub-reflective layer among the plurality of sub-reflective layers.
    Type: Application
    Filed: May 16, 2018
    Publication date: February 28, 2019
    Applicant: S-PRINTING SOLUTION CO., LTD.
    Inventors: Wan Chin KIM, Wan Ho LEE, Kyoung Man KIM, Su Hwan KIM, Yong Shik PARK, Sang Koo HAN
  • Patent number: 9880516
    Abstract: An image forming apparatus has an improved structure which avoids additional expenses associated with packing a developing unit and allows the developing unit to be stably stored. The image forming apparatus may include a body, a first developing unit accommodating portion and a second developing unit accommodating portion disposed at different positions in the body, and a developing unit which is allowed to be detachably accommodated in the first developing unit accommodating portion and the second developing unit accommodating portion. When accommodated in the first developing unit accommodating portion, the developing unit may be disposed such that it does not perform image formation. When accommodated in the second developing unit accommodating portion, the developing unit may be disposed to perform image formation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 30, 2018
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Hwan Jin Yoon, Jeong Jae Seong, Wan Ho Lee, Jeong Won Hwang
  • Publication number: 20160059472
    Abstract: Disclosed herein is an image forming apparatus. The image forming apparatus includes at least one pressing unit configured to bring the developing roller and the photoreceptor in contact with each other, an operating unit which is configured to be in an operating position during which a pressing force of the pressing unit is generated, and a standby during at which the pressing force is released, and a cover unit detachably provided to one side of the developing device and configured to guide movement of the operating unit to the operating position. By this configuration, operation of the operating unit is linked with an operation of detachment or attachment of the cover unit.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 3, 2016
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wan Ho LEE, Jin Ho PARK, Han Jun LEE
  • Patent number: 9196487
    Abstract: According to an example embodiment, a method includes forming a nitrogen vacancy surface layer by treating a surface of an n-type nitride semiconductor with inert gas plasma, and forming an oxygen-added nitride film by treating a surface of the nitrogen vacancy surface layer with oxygen-containing gas plasma, and forming an electrode on the oxygen-added nitride film. The nitrogen vacancy surface layer lacks a nitrogen element.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: November 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae Hun Kim, Sung Joon Kim, Young Kyu Sung, Wan Ho Lee, Tae Sung Jang, Tae Young Park, Wan Tae Lim
  • Patent number: 9099624
    Abstract: A semiconductor light emitting device and package containing the same include: a light emitting structure including a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer. A light extraction layer is disposed on the light emitting structure and includes a light-transmissive thin film layer having light transmittance, a nano-rod layer including nano-rods disposed on the light-transmissive thin film layer, and a nano-wire layer including nano-wires disposed on the nano-rod layer.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wan Ho Lee, Gi Bum Kim, Si Hyuk Lee
  • Publication number: 20150126022
    Abstract: According to an example embodiment, a method includes forming a nitrogen vacancy surface layer by treating a surface of an n-type nitride semiconductor with inert gas plasma, and forming an oxygen-added nitride film by treating a surface of the nitrogen vacancy surface layer with oxygen-containing gas plasma, and forming an electrode on the oxygen-added nitride film. The nitrogen vacancy surface layer lacks a nitrogen element.
    Type: Application
    Filed: July 21, 2014
    Publication date: May 7, 2015
    Inventors: Tae Hun KIM, Sung Joon KIM, Young Kyu SUNG, Wan Ho LEE, Tae Sung JANG, Tae Young PARK, Wan Tae LIM
  • Patent number: 8969901
    Abstract: A light emitting device includes a first semiconductor layer, an active layer, and a second semiconductor layer, and first and second electrodes electrically connected to the first and second semiconductor layers, respectively. The second electrode includes a reflective pad portion, a transparent electrode layer, a reflective finger portion and an electrode pad portion. The reflective pad portion is disposed in a region of an upper surface of the second semiconductor layer. The transparent electrode layer is disposed on the second semiconductor layer and has an opening encompassing the reflective pad portion such that the transparent electrode layer is not in contact with the reflective pad portion. The reflective finger portion extends from the reflective pad portion and has at least a portion thereof disposed on the transparent electrode layer. The electrode pad portion covers the reflective pad portion to be in contact with the transparent electrode layer.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Young Choi, Jae Ho Han, Ki Seok Kim, Wan Ho Lee, Myeong Ha Kim, Hae Soo Ha
  • Publication number: 20140231849
    Abstract: Semiconductor light-emitting devices including a semiconductor region that includes a light-emitting structure; and an electrode layer including a first reflection metal layer that contacts a first portion of the semiconductor region and being configured to reflect light from the light-emitting structure and a second reflection metal layer that contacts a second portion of the semiconductor region and being configured to reflect light from the light-emitting structure, wherein the second reflection metal layer is spaced apart from the first reflection metal layer and at least partially covers the first reflection metal layer.
    Type: Application
    Filed: December 3, 2013
    Publication date: August 21, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Yeob SONG, Gi-Bum KIM, Hyun-Young KIM, Ju-Heon YOON, Wan-Ho LEE, Won-Goo HUR
  • Patent number: 8785962
    Abstract: There is provided a semiconductor light emitting device including: a semiconductor light emitting laminate including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer interposed therebetween; a first electrode having at least one bonding pad formed on a portion of an upper surface of the first conductive semiconductor layer; a second electrode having an ohmic contact layer formed on the second conductive semiconductor layer; and a current blocking layer between the second conductive semiconductor layer and the ohmic contact layer having a plurality of patterns formed thereon, the plurality of patterns being arrayed such that intervals between patterns adjacent to a region overlapped with the bonding pad are smaller an interval between patterns of another regions.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Wan Ho Lee