Patents by Inventor Yong-Hwi Jo

Yong-Hwi Jo 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).

  • Patent number: 8117740
    Abstract: In a method of manufacturing a probe card, a plurality of probe modules, including a sacrificial substrate and probes on the sacrificial substrate, is prepared. The probe modules are mutually aligned to form a probe module assembly having the aligned probe modules and a desired size. The probe module assembly is then attached to a probe substrate. Thus, the probe card having a large size may be manufactured.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: February 21, 2012
    Assignee: Phicom Corporation
    Inventors: Ki-Joon Kim, Yong-Hwi Jo, Sung-Young Oh, Jun-Tae Hwang
  • Patent number: 8114302
    Abstract: Disclosed is a method of fabricating a cantilever type probes. According to this method, after forming grooves each in tip portion and dummy tip portion regions of a substrate, the tip portion and dummy tip portion are formed with filling the grooves of the tip portion and dummy tip portion regions. A sacrificial layer is formed to cover the dummy tip portion region including dummy tip portion. A beam portion is formed in connection with the tip portion, extending upward the dummy tip portion including the sacrificial layer. The method includes steps of selectively etching the substrate of the tip portion and floating the tip portion from the substrate. Accordingly, it minimizes physical and chemical damages on the tip portion while fabricating a probe card, providing stability thereto with smaller defects of the tip portion.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: February 14, 2012
    Assignee: Phicom Corporation
    Inventors: Han-Moo Lee, Yong-Hwi Jo
  • Patent number: 7886957
    Abstract: In a method of manufacturing bonding probes, bump layer patterns are formed on terminals of a multi-layered substrate. A first wetting layer pattern having a wettability with respect to a solder paste, and a non-wetting layer pattern having a non-wettability with respect to the solder paste are formed on the bump layer patterns. The solder paste is formed on the first wetting layer and the non-wetting layer pattern. The probes, which make contact with an object, are bonded to the solder paste. The solder paste on the non-wetting layer pattern reflows along a surface of the first wetting layer pattern to form an adhesive layer on the first wetting layer pattern. Thus, a sufficient amount of the solder paste, which is required for bonding the probes, may be provided to firmly bond the probes.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: February 15, 2011
    Assignee: Phicom Corporation
    Inventors: Ki-Joon Kim, Yong-Hwi Jo
  • Patent number: 7678587
    Abstract: Disclosed is a cantilever-type probe and methods of fabricating the same. The probe is comprised of a cantilever being longer lengthwise relative to the directions of width and height, and a tip extending from the bottom of the cantilever and formed at an end of the cantilever. A section of the tip parallel to the bottom of the cantilever is rectangular, having four sides slant to the lengthwise direction of the cantilever.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: March 16, 2010
    Assignee: Phicom Corporation
    Inventors: Ki-Joon Kim, Yong-Hwi Jo
  • Publication number: 20090184727
    Abstract: Provided is a probe card of a semiconductor testing apparatus, including a printed circuit board to which an electrical signal is applied from external, a space transformer having a plurality of probes directly contacting with a test object, and interconnectors connecting the printed circuit board to the probes of the space transformer. The space transformer includes substrate pieces which the probes are installed on one sides of, and a combination member joining and unifying the substrate pieces together so as to form a large-area substrate with the substrate pieces on the same plane. This probe card is advantageous to improving flatness even with a large area, as well as testing semiconductor chips formed on a wafer in a lump.
    Type: Application
    Filed: February 13, 2007
    Publication date: July 23, 2009
    Applicant: PHICOM CORPORATION
    Inventors: Ki-Joon Kim, Yong-Hwi Jo, Dong Yeul Choi
  • Publication number: 20090173712
    Abstract: Disclosed is a method of fabricating a cantilever type probes. According to this method, after forming grooves each in tip portion and dummy tip portion regions of a substrate, the tip portion and dummy tip portion are formed with filling the grooves of the tip portion and dummy tip portion regions. A sacrificial layer is formed to cover the dummy tip portion region including dummy tip portion. A beam portion is formed in connection with the tip portion, extending upward the dummy tip portion including the sacrificial layer. The method includes steps of selectively etching the substrate of the tip portion and floating the tip portion from the substrate. Accordingly, it minimizes physical and chemical damages on the tip portion while fabricating a probe card, providing stability thereto with smaller defects of the tip portion.
    Type: Application
    Filed: May 16, 2007
    Publication date: July 9, 2009
    Inventors: Han-Moo Lee, Yong-Hwi Jo
  • Publication number: 20090128180
    Abstract: Disclosed is a cantilever-type probe and methods of fabricating the same. The probe is comprised of a cantilever being longer lengthwise relative to the directions of width and height, and a tip extending from the bottom of the cantilever and formed at an end of the cantilever. A section of the tip parallel to the bottom of the cantilever is rectangular, having four sides slant to the lengthwise direction of the cantilever.
    Type: Application
    Filed: August 2, 2006
    Publication date: May 21, 2009
    Inventors: Ki-Joon Kim, Yong-Hwi Jo
  • Publication number: 20080290139
    Abstract: In a method of manufacturing bonding probes, bump layer patterns are formed on terminals of a multi-layered substrate. A first wetting layer pattern having a wettability with respect to a solder paste, and a non-wetting layer pattern having a non-wettability with respect to the solder paste are formed on the bump layer patterns. The solder paste is formed on the first wetting layer and the non-wetting layer pattern. The probes, which make contact with an object, are bonded to the solder paste. The solder paste on the non-wetting layer pattern reflows along a surface of the first wetting layer pattern to form an adhesive layer on the first wetting layer pattern. Thus, a sufficient amount of the solder paste, which is required for bonding the probes, may be provided to firmly bond the probes.
    Type: Application
    Filed: March 19, 2007
    Publication date: November 27, 2008
    Inventors: Ki-Joon Kim, Yong-Hwi Jo
  • Publication number: 20080209720
    Abstract: In a method of manufacturing a probe card, a plurality of probe modules, including a sacrificial substrate and probes on the sacrificial substrate, is prepared. The probe modules are mutually aligned to form a probe module assembly having the aligned probe modules and a desired size. The probe module assembly is then attached to a probe substrate. Thus, the probe card having a large size may be manufactured.
    Type: Application
    Filed: July 24, 2006
    Publication date: September 4, 2008
    Inventors: Ki-Joon Kim, Yong-Hwi Jo, Sung-Young Oh, Jun-Tae Hwang