Patents by Inventor Ji Hwan Park

Ji Hwan Park 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: 20180215948
    Abstract: Provided are: a composition for a window film, containing a siloxane resin including chemical formula 1, a cross-linking agent, and an initiator; a flexible window film formed therefrom; and a flexible display device including the same.
    Type: Application
    Filed: July 22, 2016
    Publication date: August 2, 2018
    Inventors: Min Hye KIM, Kyoung Ku KANG, Ji Hwan PARK, Chang Soo WOO, Ji Sun IM, Seung Woo JANG, Dong Il HAN
  • Publication number: 20180174845
    Abstract: A method for fabricating a semiconductor device includes: forming a gate trench in a semiconductor substrate; forming a gate dielectric layer over a bottom surface and sidewalls of the gate trench; forming a first work function layer over the gate dielectric layer; doping a work function adjustment element to form a second work function layer which overlaps with the sidewalls of the gate trench; forming a gate conductive layer that partially fills the gate trench; and forming doped regions inside the semiconductor substrate on both sides of the gate trench.
    Type: Application
    Filed: September 25, 2017
    Publication date: June 21, 2018
    Inventors: Tae-Su JANG, Jin-Chul PARK, Ji-Hwan PARK, Il-Sik JANG, Seong-Wan RYU, Se-In KWON, Jung-Ho SHIN, Dae-Jin HAM
  • Publication number: 20180175042
    Abstract: A method for fabricating a semiconductor device includes: forming a transistor in a semiconductor substrate; forming a capacitor including a hydrogen-containing top electrode over the transistor; and performing an annealing process for hydrogen passivation after the capacitor is formed.
    Type: Application
    Filed: September 11, 2017
    Publication date: June 21, 2018
    Inventors: Il-Sik JANG, Ji-Hwan PARK, Mi-Ri LEE, Bong-Seok JEON, Yong-Soo JOUNG, Sun-Hwan HWANG
  • Publication number: 20180112105
    Abstract: Provided are a composition for a window film, a flexible window film formed therefrom, and a flexible display device comprising same, the composition for a window film comprising: a first silicone resin comprising chemical formula 1; a second silicone resin containing a crosslinkable functional group and one or more among a Q unit and a bridge unit; a crosslinking agent; and an initiator. (R1SiO3/2)x([R2R3SiO2/2]n)y(R4R5SiO2/2)z(R6R7R8SiO1/2)w (where R1 is a crosslinkable functional group; R2 and R3 are each independently a methyl group; R4 and R5 are each independently hydrogen, a crosslinkable functional group, an unsubstituted or substituted C1-C20 alkyl group, or an unsubstituted or substituted C5-C20 cycloalkyl group; R6, R7, and R8 are each independently hydrogen, a crosslinkable functional group, an unsubstituted or substituted C1-C20 alkyl group, an unsubstituted or substituted C5-C20 cycloalkyl group, or an unsubstituted or substituted C6-C30 aryl group; n is an integer from 7 to 100; 0<x<1, 0.
    Type: Application
    Filed: April 22, 2016
    Publication date: April 26, 2018
    Inventors: Dong Il HAN, Kyoung Ku KANG, Min Hye KIM, Ji Hwan PARK, Chang Soo WOO, Ji Sun IM, Seung Woo JANG
  • Publication number: 20180030273
    Abstract: A composition for a window film including a first silicon resin including a compound represented by Formula 1; a second silicon resin including a crosslinkable functional group and at least one of a Q unit and a bridge unit; a crosslinking agent; and an initiator, a flexible window film formed therefrom, and a flexible display device including the same are disclosed.
    Type: Application
    Filed: April 22, 2016
    Publication date: February 1, 2018
    Inventors: Dong Il HAN, Kyoung Ku KANG, Min Hye KIM, Ji Hwan PARK, Chang Soo WOO, Ji Sun IM, Seung Woo JANG
  • Publication number: 20170293074
    Abstract: A photonic radiator used for a photonic phased array antenna includes a waveguide including a waveguide clad and a waveguide core that uses semiconductor materials, and a grating that radiates an output light wave to a space by using scattering of an input light wave incident in a direction of the waveguide.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 12, 2017
    Inventors: Hyo-Hoon Park, Jong-Hun Kim, Sun-Kyn Han, Ji-Hwan Park
  • Patent number: 9703176
    Abstract: A camera module includes a lens holder, a base coupled to the lens holder and integrally formed with a cable by being molded with the cable, and a sealing member positioned at a coupled surface between the lens holder and the base. The lens holder includes a lens barrel including a first concave unit formed at a front surface with a hollow hole part to accommodate a first O-ring, and a second concave unit formed at a periphery to accommodate a second O-ring. A lens unit includes a front lens arranged at a front surface of a lens barrel and includes at least one lens arranged at the hollow hole part of the lens barrel, and a retainer including a recess groove configured to accommodate a third O-ring configured to fix the front lens by being formed at a periphery to be coupled at an inner surface to the periphery of the lens barrel.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: July 11, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Ji Hwan Park, Sang Yeal Han, Min Woo Lee, Jin Ho Lee, Seung Man Jeong
  • Patent number: 9536539
    Abstract: A nonlinear acoustic echo signal suppression system and method using a Volterra filter is disclosed. The nonlinear acoustic echo signal suppression system includes an acoustic echo signal estimator configured to estimate a nonlinear acoustic echo signal by using a Volterra filter in a frequency filter, and a near-end talker speech signal generator configured to generate a near-end talker speech signal, in which the nonlinear acoustic echo signal is suppressed, by using a gain function based on a statistical model.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 3, 2017
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Joon Hyuk Chang, Ji Hwan Park
  • Publication number: 20160356597
    Abstract: An apparatus and a method for aligning a substrate are disclosed. In one aspect, the substrate aligning apparatus includes a stage configured to support a plurality of substrates, a supporting pin placed in the stage to support the substrates and an alignment clamp configured to respectively move each of the substrates to align the substrates. The alignment clamp can respectively align at least two of the substrates with reference, to an alignment reference position as a two-dimensional coordinate system which includes a first axis and a second axis crossing the first axis and is set on an imaginary plane by the first and second axes.
    Type: Application
    Filed: November 6, 2015
    Publication date: December 8, 2016
    Inventors: Jin Wan Park, Ji Hwan Park
  • Patent number: 9256508
    Abstract: A method and apparatus for controlling power in a low-power multi-core system, including receiving task information from an Operation System (OS) kernel upon start and end of a task, estimating a future CPU usage using a current CPU usage in the task information, monitoring memory-related information in the task information, comparing a change in the current CPU usage with the monitored memory-related information, establishing a policy for power control based on the estimated CPU usage and the monitored memory-related information, and controlling on/off of multiple cores according to the established policy. By doing so, it is possible to solve the problems caused by performing DPM using only the CPU usage.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 9, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-Hyun Cho, Sung-Joon Jang, Hyun-Moo Kim, Nam-Su Ha, Jin-Hyo Kim, Tae-Il Kim, Ji-Hwan Park, Hye-Sun Kim, Jin-Kyoung Du
  • Publication number: 20160005419
    Abstract: A nonlinear acoustic echo signal suppression system and method using a Volterra filter is disclosed. The nonlinear acoustic echo signal suppression system includes an acoustic echo signal estimator configured to estimate a nonlinear acoustic echo signal by using a Volterra filter in a frequency filter, and a near-end talker speech signal generator configured to generate a near-end talker speech signal, in which the nonlinear acoustic echo signal is suppressed, by using a gain function based on a statistical model.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 7, 2016
    Inventors: Joon Hyuk CHANG, Ji Hwan PARK
  • Publication number: 20150205186
    Abstract: A camera module includes a lens holder, a base coupled to the lens holder and integrally formed with a cable by being molded with the cable, and a sealing member positioned at a coupled surface between the lens holder and the base. The lens holder includes a lens barrel including a first concave unit formed at a front surface with a hollow hole part to accommodate a first O-ring, and a second concave unit formed at a periphery to accommodate a second O-ring. A lens unit includes a front lens arranged at a front surface of a lens barrel and includes at least one lens arranged at the hollow hole part of the lens barrel, and a retainer including a recess groove configured to accommodate a third O-ring configured to fix the front lens by being formed at a periphery to be coupled at an inner surface to the periphery of the lens barrel.
    Type: Application
    Filed: January 20, 2015
    Publication date: July 23, 2015
    Inventors: Ji Hwan PARK, Sang Yeal Han, Min Woo Lee, Jin Ho Lee, Seung Man Jeong
  • Patent number: 8661276
    Abstract: A power control method of a Central Processing Unit (CPU) in a multi-core system. The power control method includes acquiring current usage information of the CPU and system information, estimating a CPU usage of a next time interval based on the acquired current usage information, calibrating the estimated CPU usage of the next time interval based on the acquired system information, and determining a power control mode based on at least one of the acquired system information and the calibrated CPU usage of the next time interval.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 25, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ji-Hwan Park, Hyun-Moo Kim, Nam-Su Ha, Jung-Hwan Choi, Jin-Hyo Kim, Tae-Il Kim, Il-Hyun Cho, Sung-Joon Jang, Hye-Sun Kim, Jin-Kyoung Du
  • Publication number: 20130004726
    Abstract: The present invention relates to a light guide plate, and a method and apparatus of manufacturing the same. The light guide plate includes; a transparent substrate including an active area and a dummy area defined in the periphery of the active area, wherein a groove for coupling other members is defined in the dummy area; and a pattern layer disposed on one surface of the substrate. The pattern layer is not disposed on the dummy area of the substrate, but disposed on the active area of the substrate. Since the pattern layer is formed on only the active are of the substrate using a spinless process, a material for forming the pattern layer may not be wasted to reduce material costs. Also, since a plurality of grooves are formed in the substrate before the pattern layer is formed on the substrate, conventional limitations, whereby it is difficult to perform a groove forming process due to a pattern layer cured by forming a plurality of grooves after the pattern layer is formed, may be overcome.
    Type: Application
    Filed: January 18, 2011
    Publication date: January 3, 2013
    Inventors: Doo Jin Park, Ji Hwan Park
  • Publication number: 20120295020
    Abstract: The present invention relates to a preparation method of an optical member, comprising the following steps: coating a a mixture of methyl methacrylate (MMA) and a light diffuser on one surface of a substrate comprising poly methyl methacrylate (PMMA) by a predetermined pattern; polymerizing the coated methyl methacrylate into poly methyl methacrylate to form semi-cured polymethyl methacrylate; and completely curing the semi-cured polymethyl methacrylate, and an optical member prepared thereby.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 22, 2012
    Inventors: Doo Jin Park, Ji Hwan Park, Seok Il Yoon, Hun Soo Oh, Dong Jin Jung, Ki Wan Baek, Jae Hoon Kim, Ki Seop Kim, Jong Kil Kim
  • Publication number: 20120216054
    Abstract: A method and apparatus for controlling power in a low-power multi-core system, including receiving task information from an Operation System (OS) kernel upon start and end of a task, estimating a future CPU usage using a current CPU usage in the task information, monitoring memory-related information in the task information, comparing a change in the current CPU usage with the monitored memory-related information, establishing a policy for power control based on the estimated CPU usage and the monitored memory-related information, and controlling on/off of multiple cores according to the established policy. By doing so, it is possible to solve the problems caused by performing DPM using only the CPU usage.
    Type: Application
    Filed: November 4, 2010
    Publication date: August 23, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Il-Hyun Cho, Sung-Joon Jang, Hyun-Moo Kim, Nam-Su Ha, Jin-Hyo Kim, Tae-Il Kim, Ji-Hwan Park, Hye-Sun Kim, Jin-Kyoung Du
  • Patent number: 8124438
    Abstract: A CMOS image sensor and a method of fabricating the same. The CMOS image sensor may minimize disappearance of electrons generated by light without transmission of electrons to a transfer gate. A method of manufacturing a CMOS image sensor may include forming a trench over an isolation region of a semiconductor substrate to define an active region including a photodiode region and a transistor region. The method may include forming first conductivity-type ion implanted regions over a trench side wall of a photodiode region and over a region adjacent to the transistor region. The method may include forming second conductivity-type ion implanted regions between a first conductivity-type ion implanted region and a trench, and between a lower part of a transistor region and a first conductivity-type ion implanted region. The method may include forming an isolation layer, forming a gate electrode and a spacer, and/or forming a photodiode.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: February 28, 2012
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Ji-Hwan Park
  • Patent number: 8119443
    Abstract: Provided is a method in which a photodiode layer is formed on a metal interconnection layer, and a hard mask layer is formed on the photodiode layer. Then, a photoresist pattern is formed on the hard mask layer to define a contact hole region, and a first hole is formed in the hard mask layer through an etching process. Next, an ion implantation etching layer is formed in the photodiode layer using the photoresist pattern as an ion implantation mask, and a second hole is formed by etching the ion implantation etching layer. A third hole is formed to expose the metal interconnection by etching a region of the metal interconnection layer corresponding to the second hole.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: February 21, 2012
    Assignee: Dongbu HiTek Co., Ltd.
    Inventor: Ji Hwan Park
  • Patent number: 8014915
    Abstract: Disclosed is a vehicle management system using a wireless network system the system comprising, a WCDMA service unit having a specified ID and obtaining access to a network wirelessly, an ECU system associated with the WCDMA service module for controlling all kinds of interfaces in a vehicle, a service provider for providing various services when the WCDMA service module is connected to the wireless network, and a user having the services through non-wireless or wireless communication inside or outside of the vehicle.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: September 6, 2011
    Assignee: Sungkyunkwan University Foundation For Corporate Collaboration
    Inventors: Jae Wook Jeon, Sang Won Lee, Suk Hyun Seo, Ji Hwan Park
  • Publication number: 20110093724
    Abstract: A power control method of a Central Processing Unit (CPU) in a multi-core system. The power control method includes acquiring current usage information of the CPU and system information, estimating a CPU usage of a next time interval based on the acquired current usage information, calibrating the estimated CPU usage of the next time interval based on the acquired system information, and determining a power control mode based on at least one of the acquired system information and the calibrated CPU usage of the next time interval.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 21, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ji-Hwan PARK, Hyun-Moo Kim, Nam-Su Ha, Jung-Hwan Choi, Jin-Hyo Kim, Tae-Il Kim, Il-Hyun Cho, Sung-Joon Jang, Hye-Sun Kim, Jin-Kyoung Du