Patents by Inventor Dae Chul Choi

Dae Chul Choi 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: 20250120006
    Abstract: A printed circuit board includes a substrate; first and second through-portions penetrating between upper and lower surfaces of the substrate; a magnetic layer disposed in the first through-portion; a voltage regulator disposed in the second through-portion; a first through-hole penetrating between upper and lower surfaces of the magnetic layer; a first insulating layer disposed on the substrate, covering the magnetic layer and the voltage regulator, and filling the second through-portion and the first through-hole; a second through-hole penetrating between upper and lower surfaces of the first insulating layer in the first through-hole; a first wiring pattern disposed on an upper surface of the magnetic layer; a second wiring pattern disposed on a lower surface of the magnetic layer; and a first via pattern disposed in the second through-hole and connecting the first and second wiring patterns to each other.
    Type: Application
    Filed: July 18, 2024
    Publication date: April 10, 2025
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Dae Chul CHOI, Seung Bae LEE, Ye Ji KIM, Il Dong KIM, Woo Seok YANG, Ah Yeon IM, Kyoung Seok CHO, Jae Ho LEE
  • Publication number: 20230207185
    Abstract: A coil component includes a body having a first surface, a coil including a coil pattern having a plurality of turns, a first and second lead-out portions disposed in the body and connected to one end and the other end of the coil, respectively, a first and second dummy lead-out portions disposed in the body and spaced apart from the coil, a first and second external electrodes disposed on the first surface of the body and connected to the first and second lead-out portions, respectively. A coil pattern closest to the first surface among the coil patterns disposed in a region between the first lead-out portion and the first dummy lead-out portion is connected to the first lead-out portion.
    Type: Application
    Filed: December 7, 2022
    Publication date: June 29, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yong Min KIM, Jae Hun KIM, Chang Yun LEE, Dae Chul CHOI, Se Yeon HWANG, Yeo Ok JEON
  • Patent number: 10607764
    Abstract: An electronic component includes: a body having electrical insulating properties; an external electrode disposed on an external surface of the body; and a reinforcing layer disposed on a surface of the body and including a metal oxide layer and a graphene oxide layer.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Soo Young Ji, Hwan Soo Yoo, Nam Soon Moon, Jeong Suong Yang, Tae Ho Kim, Dae Chul Choi
  • Patent number: 10528531
    Abstract: The present disclosure relates to a method and an apparatus for verifying biodata by verifying, in real-time, whether there are errors in biodata received from a client terminal. The method may include the steps of: receiving a request to upload biodata from the client terminal and storing the biodata to a storage system; extracting sequences from the biodata and verifying whether the sequences are valid data; upon detection of errors in a sequence, calculating an error ratio of the sequence and, when the calculated error ratio exceeds a threshold value, terminating the upload of the biodata.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: January 7, 2020
    Assignee: KT CORPORATION
    Inventors: Chang-Bum Hong, Mi-Sook Lee, Han-Kyu Choi, Dae-Chul Choi
  • Publication number: 20180286559
    Abstract: An electronic component includes: a body having electrical insulating properties; an external electrode disposed on an external surface of the body; and a reinforcing layer disposed on a surface of the body and including a metal oxide layer and a graphene oxide layer.
    Type: Application
    Filed: October 13, 2017
    Publication date: October 4, 2018
    Inventors: Soo Young JI, Hwan Soo YOO, Nam Soon MOON, Jeong Suong YANG, Tae Ho KIM, Dae Chul CHOI
  • Publication number: 20170147614
    Abstract: The present disclosure relates to a method and an apparatus for verifying biodata by verifying, in real-time, whether there are errors in biodata received from a client terminal. The method may include the steps of: receiving a request to upload biodata from the client terminal and storing the biodata to a storage system; extracting sequences from the biodata and verifying whether the sequences are valid data; upon detection of errors in a sequence, calculating an error ratio of the sequence and, when the calculated error ratio exceeds a threshold value, terminating the upload of the biodata.
    Type: Application
    Filed: July 18, 2013
    Publication date: May 25, 2017
    Applicant: KT CORPORATION
    Inventors: Chang-Bum HONG, Mi-Sook LEE, Han-Kyu CHOI, Dae-Chul CHOI
  • Publication number: 20160300773
    Abstract: There is provided a printed circuit board includes a substrate having product areas for mounting elements and dummy areas disposed between two neighboring product areas, external connection terminals disposed on the product areas, and a plurality of dummy bumps disposed on the dummy areas.
    Type: Application
    Filed: March 4, 2016
    Publication date: October 13, 2016
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young Doo LEE, Dae Chul CHOI
  • Patent number: 8022622
    Abstract: An organic light emitting display device including: a substrate having a pixel region and a non-pixel region; a first buffer layer and a second buffer layer formed over the substrate; a thin film transistor formed over the second buffer layer; an organic light emitting device formed in the pixel region and electrically connected with the thin film transistor; and a photo diode formed in the non-pixel region, for receiving external light of red wavelength at a certain absorption rate, and for controlling brightness of the organic light emitting device. Here, the first buffer layer can be formed to be from 2900 ? to 3100 ? in thickness, the second buffer layer can be formed to be from 200 ? to 400 ? in thickness, and the photo diode can include: an N-type doping region, a channel region being from 3 to 10 ?m in width, and a P-type doping region.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: September 20, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Dae Chul Choi, Byoung Deog Choi
  • Patent number: 7501682
    Abstract: A nonvolatile memory device may include a substrate, a semiconductor layer on the substrate, and including a source region, a drain region having a relatively shallower impurity injection region than that of the source region and a channel region disposed between the source and drain regions, a first gate insulating layer on the semiconductor layer, and having regions corresponding to the source and drain regions thinner than a region corresponding to the channel region, and a first gate electrode, a second gate insulating layer, and a second gate electrode which are disposed on the first gate insulating layer. An organic light emitting display device (OLED) may include the nonvolatile memory device.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 10, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dae-Chul Choi, Byoung-Deog Choi, Hye-Hyang Park, Ju-Yeun Jung, Hyun-Sun Park
  • Patent number: 7476896
    Abstract: A thin film transistor (TFT) and a method of fabricating the same, in which a fabrication process is simplified and damage to a gate insulating layer is decreased. The method of fabricating the TFT includes forming at least one buffer layer on a substrate, forming a first semiconductor layer formed on the buffer layer and a second semiconductor layer by depositing a semiconductor doped with a dopant on the first semiconductor layer, patterning the second semiconductor layer to form source and drain regions, forming a gate insulating layer on the source and drain regions, and forming a gate electrode on the gate insulating layer.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: January 13, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dae Chul Choi, Byoung Deog Choi, Choong Youl Im
  • Publication number: 20070273291
    Abstract: An organic light emitting display device including: a substrate having a pixel region and a non-pixel region; a first buffer layer and a second buffer layer formed over the substrate; a thin film transistor formed over the second buffer layer; an organic light emitting device formed in the pixel region and electrically connected with the thin film transistor; and a photo diode formed in the non-pixel region, for receiving external light of red wavelength at a certain absorption rate, and for controlling brightness of the organic light emitting device. Here, the first buffer layer can be formed to be from 2900 ? to 3100 ? in thickness, the second buffer layer can be formed to be from 200 ? to 400 ? in thickness, and the photo diode can include: an N-type doping region, a channel region being from 3 to 10 ?m in width, and a P-type doping region.
    Type: Application
    Filed: March 8, 2007
    Publication date: November 29, 2007
    Inventors: Dae Chul Choi, Byoung Deog Choi
  • Publication number: 20070273292
    Abstract: An organic light emitting display device, which has a photo diode for receiving light of blue wavelengths. In one embodiment, an organic light emitting display device includes: a substrate having pixel and non-pixel regions; first and second buffer layers disposed over the substrate; a thin film transistor (TFT) disposed over the second buffer layer; an organic light emitting diode disposed in the pixel region over the TFT and electrically connected with the TFT; and a photo diode disposed on the second buffer layer in the non-pixel region and adapted to receive incident light of blue wavelength from an external source. A thickness of the first buffer layer ranges from 700 to 900 ?, and a thickness of the second buffer layer ranges from 500 to 700 ?. The photo diode includes N-type and P-type doping regions and an intrinsic region having a width ranging from 1 to 10 ?m.
    Type: Application
    Filed: March 8, 2007
    Publication date: November 29, 2007
    Inventors: Dae Chul Choi, Byoung Deog Choi, Kyoung Bo Kim
  • Publication number: 20070249110
    Abstract: A nonvolatile memory device may include a substrate, a semiconductor layer on the substrate, and including a source region, a drain region having a relatively shallower impurity injection region than that of the source region and a channel region disposed between the source and drain regions, a first gate insulating layer on the semiconductor layer, and having regions corresponding to the source and drain regions thinner than a region corresponding to the channel region, and a first gate electrode, a second gate insulating layer, and a second gate electrode which are disposed on the first gate insulating layer. An organic light emitting display device (OLED) may include the nonvolatile memory device.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Inventors: Dae-Chul Choi, Byoung-Deog Choi, Hye-Hyang Park, Ju-Yeun Jung, Hyun-Sun Park