Patents by Inventor Seung-Jin Cheon

Seung-Jin Cheon 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: 20240120177
    Abstract: A substrate processing method is provided. The substrate processing method comprises loading a substrate onto a substrate support inside a chamber, forming a plasma inside the chamber, providing a first DC pulse signal to an electromagnet that generates a magnetic field inside the chamber and processing the substrate with the plasma, wherein the first DC pulse signal is repeated at a first period including a first section and a second section subsequent to the first section, the first DC pulse signal has a first level during the first section, and the first DC pulse signal has a second level different from the first level during the second section.
    Type: Application
    Filed: September 19, 2023
    Publication date: April 11, 2024
    Inventors: Ji Mo LEE, Dong Hyeon NA, Myeong Soo SHIN, Woong Jin CHEON, Kyung-Sun KIM, Jae Bin KIM, Tae-Hwa KIM, Seung Bo SHIM
  • Publication number: 20210108009
    Abstract: Provided is a composition including an alicyclic acrylate derivative. A composition including an alicyclic acrylate derivative according to one embodiment of the present invention includes an alicyclic acrylate compound but does not include an amine derivative by-product.
    Type: Application
    Filed: October 14, 2020
    Publication date: April 15, 2021
    Inventors: Dong Kyung PARK, Seok Jin HWANG, Seung Jin CHEON, Gyu Sung LEE
  • Publication number: 20170136669
    Abstract: A molding apparatus for semiconductor package fabrication includes a bottom mold on which a molding object can be mounted, a top mold on the bottom mold including the molding object that is mounted on the bottom mold, and a side mold on one side of the bottom mold and the top mold. The side mold has a plurality of air vent holes. A cavity into which a molding material can be injected and made to flow is provided between the bottom mold and the top mold.
    Type: Application
    Filed: October 17, 2016
    Publication date: May 18, 2017
    Inventors: Kwang won Choi, Jong-woo Park, Seung jin Cheon, Hyun-suk Chun, In hak Baick
  • Publication number: 20170129032
    Abstract: A solder ball attachment apparatus including an open ball box configured to accommodate a plurality of solder balls, the open ball box including, a pocket portion at a bottom thereof, the pocket portion configured to accommodate the solder balls, and an inclined portion extending from the pocket portion toward an outer surface of the open ball box, a solder ball attachment tool configured to apply suction pressure to a lower surface thereof, the lower surface configured to face the open ball box, the lower surface configured to adsorb the solder balls accommodated in the ball box by moving between a first position and a second position, the first position being a standby position, the second position being a position for adsorbing the solder balls, and a vibration member connected to the open ball box may be provided.
    Type: Application
    Filed: July 27, 2016
    Publication date: May 11, 2017
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Young-bok KIM, Hee-chul KANG, Young-jin JU, Jun-ho SONG, Seung-jin CHEON, Young-rae KIM, Hyeong-gyu KIM, Sang-kyu YEON
  • Patent number: 7824585
    Abstract: An apparatus for fabricating semiconductor packages may include a thickness measurer configured to measure the thickness of a printed circuit board (PCB); mold dies, clamped to the top and the bottom of the PCB, through which a molding compound may be injected; and a pressure controller configured to control a clamp pressure of the mold die in response to the thickness of the PCB. The thickness of the PCB may be measured before molding the PCB, and a clamp pressure corresponding to the measured thickness may be decided. Therefore, it is possible to adjust the thickness variation of a PCB in real time, as they are being produced, to decrease the number of bad packages.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seung-Jin Cheon
  • Publication number: 20080038848
    Abstract: An apparatus for fabricating semiconductor packages may include a thickness measurer configured to measure the thickness of a printed circuit board (PCB); mold dies, clamped to the top and the bottom of the PCB, through which a molding compound may be injected; and a pressure controller configured to control a clamp pressure of the mold die in response to the thickness of the PCB. The thickness of the PCB may be measured before molding the PCB, and a clamp pressure corresponding to the measured thickness may be decided. Therefore, it is possible to adjust the thickness variation of a PCB in real time, as they are being produced, to decrease the number of bad packages.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Inventor: Seung-Jin Cheon