Patents by Inventor Young-Ju Han

Young-Ju Han 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: 20240094591
    Abstract: An optical path control member according to an embodiment comprises: a first substrate; a first electrode provided on the upper portion of the first substrate; a second substrate provided on the first substrate; a second electrode provided on the lower portion of the second substrate; and an optical conversion unit provided between the first electrode and the second electrode, wherein the optical conversion unit comprises partition wall parts and accommodation parts which are alternately arranged. The accommodation parts have a light transmission rate that varies according to the application of a voltage, and the accommodation parts comprise a plurality of unit accommodation cells spaced apart from each other, and comprises a dispersion and light-absorbing particles which are dispersed in the dispersion.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 21, 2024
    Inventors: Jong Sik LEE, Byung Sook KIM, Jin Gyeong PARK, In Hae LEE, Young Ju HAN
  • Publication number: 20240085736
    Abstract: An optical path control member according to an embodiment comprises: a first substrate; a first electrode arranged on the upper surface of the first substrate; a second substrate arranged on top of the first substrate; a second electrode arranged on the lower surface of the second substrate; and an optical conversion unit which is arranged between the first electrode and the second electrode and which defines a first direction and a second direction, wherein the optical conversion unit comprises a partition part and an accommodation part that are alternately arranged in the first direction, the accommodation part includes a plurality of cells arranged to be spaced in the second direction, at least one of the cells includes a first inner side surface and a second inner side surface that are connected to each other, and the first inner side surface and/or the second inner side surface extends in a direction other than the first and second directions.
    Type: Application
    Filed: September 22, 2020
    Publication date: March 14, 2024
    Inventors: In Hae LEE, Young Ju HAN, Byung Sook KIM, Kweon Jin LEE, Jun Sik SHIN
  • Publication number: 20230077281
    Abstract: An optical path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the upper part of the first substrate; a second substrate disposed on the first substrate; a second electrode disposed on the lower part of the second substrate; and an optical conversion unit disposed between the first electrode and the second electrode. The optical conversion unit includes partition wall portions and receiving portions that are alternately disposed. The receiving portions change optical transmittance in response to the application of voltage, and include a dispersion and optical conversion particles dispersed in the dispersion. The refractive index ratio of the partition wall portions and the receiving portions is 1:0.95 to 1:1.05.
    Type: Application
    Filed: January 12, 2021
    Publication date: March 9, 2023
    Inventors: Young Ju HAN, Byung Sook KIM, Hyeon Ji HONG, Won Seok CHOI, Jin Gyeong PARK
  • Publication number: 20230045017
    Abstract: A light path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; and a light conversion unit disposed between the first electrode and the second electrode, wherein the light conversion unit includes a partition wall and an accommodation part that are arranged alternately, the accommodation part changes in light transmittance according to the application of voltage, the accommodation part includes a dispersion liquid and light conversion particles dispersed in the dispersion liquid, the contact surface between the partition wall and the accommodation part is inclined at an inclination angle with respect to a reference axis perpendicular to the upper surface of the first substrate, and the inclination angle is 1° to 10°.
    Type: Application
    Filed: January 12, 2021
    Publication date: February 9, 2023
    Inventors: Young Ju HAN, In Hae LEE, Byung Sook KIM
  • Publication number: 20230044139
    Abstract: A light path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed under the second substrate; a light conversion part disposed between the first electrode and the second electrode; and an adhesive layer disposed between the second electrode and the light conversion part, wherein the light conversion part comprises alternately disposed partition wall portions and accommodating portions, the accommodating portions comprise a dispersion and a plurality of light absorbing particles disposed in the dispersion, and the log volume resistivity of the adhesive layer is 9 ?·cm to 15 ?·cm.
    Type: Application
    Filed: January 8, 2021
    Publication date: February 9, 2023
    Inventors: In Hae LEE, Byung Sook KIM, Chan Mi JU, Young Ju HAN
  • Publication number: 20220291564
    Abstract: A light path control member according to an embodiment comprises: a first substrate; a first electrode disposed on the first substrate; a second substrate disposed on the first substrate; a second electrode disposed below the second substrate; a light conversion unit disposed between the first electrode and the second electrode; and a power supply unit connected to the first electrode and the second electrode, wherein the light conversion unit includes a partition wall part and a receiving part that are alternately arranged, the receiving part has a light transmittance that changes in response to the application of a voltage, the receiving part includes a dispersion liquid and a plurality of light absorbing particles dispersed in the dispersion liquid, the height of the receiving part is 15 ?m to 25 ?m, the width of the receiving part is 1.5 ?m to 2.
    Type: Application
    Filed: September 11, 2020
    Publication date: September 15, 2022
    Inventors: Young Ju HAN, In Hae LEE, Byung Sook KIM
  • Publication number: 20210267043
    Abstract: A printed circuit board according to an embodiment comprises: a substrate comprising at least two insulating layers; pads arranged on the substrate; heat dissipation vias arranged to pass through the substrate in a region of the substrate which vertically overlaps the pads; and through vias arranged to pass through the substrate in a region of the substrate which does not vertically overlap the pads, wherein each heat dissipation via includes a plurality of via parts which are spaced apart from each other in at least one of the at least two insulating layers, the upper surface of each of the plurality of via parts has a first horizontal width in a first direction that is smaller than a second horizontal width thereof in a second direction different from the first direction, and the plurality of via parts have a surface area corresponding to 10% or greater of the surface area of the pads.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 26, 2021
    Inventors: Do Hyuk YOO, Hee Jung LEE, Young Ju HAN, Young Il LEE
  • Patent number: 10468554
    Abstract: A light-emitting device according to an embodiment of the present invention includes a substrate; a light-emitting structure provided on the substrate, and including a first conductive type semiconductor layer, a second conductive type semiconductor layer, and an active layer provided between the first conductive type semiconductor layer and the second conductive type semiconductor layer; a first electrode provided on the light-emitting structure; a first connecting electrode provided on the first electrode; a second electrode provided on the light-emitting structure; a second connecting electrode provided on the second electrode; and a support layer provided around the first electrode, the first connecting electrode, the second electrode and the second connecting electrode. The support layer includes a first support layer having a first coefficient of thermal expansion, and a second support layer provided on the first support layer and having a second coefficient of thermal expansion.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: November 5, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Ju Han, Jina Gu, Hyun Gu Im
  • Publication number: 20180190867
    Abstract: A light-emitting device according to an embodiment of the present invention includes a substrate; a light-emitting structure provided on the substrate, and including a first conductive type semiconductor layer, a second conductive type semiconductor layer, and an active layer provided between the first conductive type semiconductor layer and the second conductive type semiconductor layer; a first electrode provided on the light-emitting structure; a first connecting electrode provided on the first electrode; a second electrode provided on the light-emitting structure; a second connecting electrode provided on the second electrode; and a support layer provided around the first electrode, the first connecting electrode, the second electrode and the second connecting electrode. The support layer includes a first support layer having a first coefficient of thermal expansion, and a second support layer provided on the first support layer and having a second coefficient of thermal expansion.
    Type: Application
    Filed: June 17, 2016
    Publication date: July 5, 2018
    Inventors: Young Ju HAN, Jina GU, Hyun Gu IM
  • Patent number: 9893235
    Abstract: A light emitting device is provided a transmissive substrate; a first pattern portion including a protrusions; a second pattern portion including a concaves having a width smaller than a width of each protrusion; a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer, under the transmissive substrate; a first electrode under the first conductive semiconductor layer; a reflective electrode layer under the second conductive semiconductor layer; a second electrode under the reflective electrode layer; a first connection electrode under the first electrode; a second connection electrode under the second electrode; and an insulating support member around the first electrode and the first connection electrode and around the second electrode and the second connection electrode. A transmissive resin layer is on the transmissive substrate and an insulating layer is between the insulating support member and the reflective electrode layer.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: February 13, 2018
    Assignee: LG INNOTEK CO., LTD
    Inventors: Pil Geun Kang, Hee Seok Choi, Seok Beom Choi, Ju Won Lee, Deok Ki Hwang, Young Ju Han
  • Patent number: 9673366
    Abstract: A light emitting device may be provided that includes a substrate, a light emitting structure, a first electrode on a part of the first semiconductor layer, an electrode layer on the second conductive semiconductor layer, an insulating layer on the electrode layer, a second electrode on the electrode layer, a support member on the insulating layer, a first connection electrode connected to the first electrode, and a second connection electrode connected to the second electrode. The insulating layer is disposed on a side surface of the light emitting structure and the part of the first semiconductor layer. The insulating layer includes a first layer and a second layer having a different material from the first layer. The first layer of the insulating layer has a refractive index different from the second layer of the insulating layer.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: June 6, 2017
    Assignee: LG Innotek Co., Ltd.
    Inventors: Deok Ki Hwang, Young Ju Han, Hee Seok Choi, Ju Won Lee, Pil Geun Kang, Seok Beom Choi
  • Patent number: 9595640
    Abstract: Disclosed are a light emitting device, a light emitting device package and a light emitting module. The light emitting device includes a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer between the first and second conductive semiconductor layers; a support member under the light emitting structure; a reflective electrode layer between the second conductive semiconductor layer and the support member; and first to third connection electrodes spaced apart from each other in the support member. The second connection electrode is disposed between the first and third connection electrodes, the first and third connection electrodes are electrically connected with each other, and the support member is disposed at a peripheral portion of the first to third connection electrodes.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: March 14, 2017
    Assignee: LG Innotek Co., Ltd.
    Inventors: Seok Hun Bae, Seok Beom Choi, Pil Geun Kang, Deok Ki Hwang, Young Ju Han, Hee Seok Choi, Young Rok Park, Tae Don Lee, Hyun Sung Oh, Jee Hue Joo, Dong Woo Kang, Sung Sig Kim
  • Patent number: 9468096
    Abstract: According to one embodiment of the present invention, an epoxy resin composition comprises an epoxy compound, a curing agent, and an inorganic filler, wherein the inorganic filler includes boron nitride (BN).
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: October 11, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Sungjin Yun, Jae Man Park, Jong Heum Yoon, Young Ju Han
  • Patent number: 9397261
    Abstract: A light emitting device is provided a transmissive substrate; a first pattern portion including a protrusions; a second pattern portion including a concaves having a width smaller than a width of each protrusion; a light emitting structure under the transmissive substrate and including a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer; a first electrode under the first conductive semiconductor layer; a reflective electrode layer under the second conductive semiconductor layer; a second electrode under the reflective electrode layer; a first connection electrode under the first electrode; a second connection electrode under the second electrode; and an insulating support member around the first electrode and the first connection electrode and around the second electrode and the second connection electrode and including a ceramic-based thermal diffusion agent.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: July 19, 2016
    Assignee: LG Innotek Co., Ltd.
    Inventors: Pil Geun Kang, Hee Seok Choi, Seok Beom Choi, Ju Won Lee, Deok Ki Hwang, Young Ju Han
  • Patent number: 9269878
    Abstract: A light emitting device may be provided that includes a substrate, a light emitting structure, a first electrode under the first semiconductor layer, a reflective electrode layer under the second conductive semiconductor layer, a second electrode under the reflective electrode layer, and a support member under the first semiconductor layer and the reflective electrode layer around the first and second electrodes. A first connection electrode may be provided under the first electrode. At least a part of the first connection electrode is provided in the support member. A second connection electrode may be provided under the second electrode At least a part of the second connection electrode may be provided in the support member.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: February 23, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Deok Ki Hwang, Young Ju Han, Hee Seok Choi, Ju Won Lee, Pil Geun Kang, Seok Beom Choi
  • Publication number: 20160049546
    Abstract: A light emitting device may be provided that includes a substrate, a light emitting structure, a first electrode on a part of the first semiconductor layer, an electrode layer on the second conductive semiconductor layer, an insulating layer on the electrode layer, a second electrode on the electrode layer, a support member on the insulating layer, a first connection electrode connected to the first electrode, and a second connection electrode connected to the second electrode. The insulating layer is disposed on a side surface of the light emitting structure and the part of the first semiconductor layer. The insulating layer includes a first layer and a second layer having a different material from the first layer. The first layer of the insulating layer has a refractive index different from the second layer of the insulating layer.
    Type: Application
    Filed: October 28, 2015
    Publication date: February 18, 2016
    Inventors: Deok Ki HWANG, Young Ju HAN, Hee Seok CHOI, Ju Won LEE, Pil Geun KANG, Seok Beom CHOI
  • Patent number: 9219206
    Abstract: Provided are a package including a first conductive layer on a patterned layer, an insulating layer on the patterned layer burying the first conductive layer, a second conductive layer on an outer surface of the insulating layer, and a third conductive layer in the insulating layer electrically connecting the first conductive layer with the second conductive layer. A substrate is formed by printing or coating a paste- or ink-type insulator and conductor on a patterned layer formed on a sapphire wafer. No void is created between the substrate and LED chip, thus enhancing attachment strength. The ceramic-containing insulator is cured at a low temperature, thereby minimizing contraction of and damage to the wafer when the ceramic is fired. Printing methods utilizing viscous paste or ink solves problems with co-planarity of substrate that occur in existing wafer-to-wafer bonding processes and renders several steps of the existing substrate manufacturing process unnecessary.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: December 22, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Ju Han, Deok Ki Hwang, Jae Chung Lim
  • Publication number: 20150319856
    Abstract: According to one embodiment of the present invention, an epoxy resin composition comprises an epoxy compound, a curing agent, and an inorganic filler, wherein the inorganic filler includes boron nitride (BN).
    Type: Application
    Filed: December 6, 2013
    Publication date: November 5, 2015
    Inventors: Sungjin YUN, Jea Man PARK, Jong Heum YOON, Young Ju HAN
  • Publication number: 20150179884
    Abstract: A light emitting device is provided a transmissive substrate; a first pattern portion including a protrusions; a second pattern portion including a concaves having a width smaller than a width of each protrusion; a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer, under the transmissive substrate; a first electrode under the first conductive semiconductor layer; a reflective electrode layer under the second conductive semiconductor layer; a second electrode under the reflective electrode layer; a first connection electrode under the first electrode; a second connection electrode under the second electrode; and an insulating support member around the first electrode and the first connection electrode and around the second electrode and the second connection electrode. A transmissive resin layer is on the transmissive substrate and an insulating layer is between the insulating support member and the reflective electrode layer.
    Type: Application
    Filed: February 10, 2015
    Publication date: June 25, 2015
    Inventors: Pil Geun KANG, Hee Seok CHOI, Seok Beom CHOI, Ju Won LEE, Deok Ki HWANG, Young Ju HAN
  • Publication number: 20130193464
    Abstract: Disclosed are a light emitting device, a light emitting device package and a light emitting module. The light emitting device includes a light emitting structure including a first conductive semiconductor layer, a second conductive semiconductor layer and an active layer between the first and second conductive semiconductor layers; a support member under the light emitting structure; a reflective electrode layer between the second conductive semiconductor layer and the support member; and first to third connection electrodes spaced apart from each other in the support member. The second connection electrode is disposed between the first and third connection electrodes, the first and third connection electrodes are electrically connected with each other, and the support member is disposed at a peripheral portion of the first to third connection electrodes.
    Type: Application
    Filed: January 2, 2013
    Publication date: August 1, 2013
    Inventors: Seok Hun BAE, Seok Beom CHOI, Pil Geun KANG, Deok Ki HWANG, Young Ju HAN, Hee Seok CHOI, Young Rok PARK, Tae Don LEE, Hyun Sung OH, Jee Hue JOO, Dong Woo KANG, Sung Sig KIM