Patents by Inventor Jae-chun Choi

Jae-chun 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: 20240136208
    Abstract: A light-emitting element transfer system includes raw film cutting device for forming a transfer member by cutting a raw film, a stretching device for stretching a transfer film with a plurality of light-emitting elements disposed thereon, a circuit board support member for supporting a circuit board and transport head for adsorbing the transfer member and transferring the light-emitting elements on the transfer film onto the circuit board by using the adsorbed transfer member.
    Type: Application
    Filed: July 20, 2023
    Publication date: April 25, 2024
    Inventors: Jeong Won HAN, Chung Sic CHOI, Won Hee OH, Han Chun RYU, Jae Woo LEE
  • Patent number: 7495893
    Abstract: A portable computer includes a main body, a keyboard assembly and an interface unit. The main body has a main circuit substrate received in the main body and a main body connector. The interface unit has a plurality of signal pads and a plurality of groups of branch pads split from an end of a line extended from each signal pad into a plurality of branches. The keyboard assembly has a plurality of keyboard signal pins connected to one of either each of the branch pads of each group or the signal pad, and a main body cable unit of which one side is provided with a cable connector connected to the main body connector, and the other side is provided with main body signal pins connected to the other of either each of the branch pads of each group or the signal pad.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: February 24, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jae-chun Choi
  • Publication number: 20070070592
    Abstract: A portable computer includes a main body, a keyboard assembly and an interface unit. The main body has a main circuit substrate received in the main body and a main body connector. The interface unit has a plurality of signal pads and a plurality of groups of branch pads split from an end of a line extended from each signal pad into a plurality of branches, The keyboard assembly has a plurality of keyboard signal pins connected to one of either each of the branch pads of each group or the signal pad, and a main body cable unit of which one side is provided with a cable connector connected to the main body connector, and the other side is provided with main body signal pins connected to the other of either each of the branch pads of each group or the signal pad.
    Type: Application
    Filed: July 13, 2006
    Publication date: March 29, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Jae-chun Choi
  • Publication number: 20050026499
    Abstract: The present invention relates to a connector and a notebook computer system having the same, wherein the connector comprises a connector body provided in the first electronic device and having at least one terminal; a shield combined with the connector body and grounded to a grounding part of the first electronic device; and at least one grounding member provided on the shield so as to grounding-connect a grounding part of the second electronic device with the shield. With this configuration, the present invention provides a connector and a notebook computer system using the same, which is improved in suppressing RF noise between the pair of electronic devices connected by the connector, assembling the notebook computer system efficiently, and decreasing production cost thereof.
    Type: Application
    Filed: June 22, 2004
    Publication date: February 3, 2005
    Inventor: Jae-chun Choi
  • Patent number: 5774741
    Abstract: Disclosed is an apparatus capable of supporting a variety of optional extension modules for a portable computer, comprising a port connector for connecting any of the optional extension modules; and a selector for receiving a control signal from the connected module through the port connector and enabling the portable computer to communicate with the connected module. With the module supporting apparatus, a variety of optional extension modules can be connected to the computer by using the port connector. Besides basic functions, the portable computer can perform a variety of functions, such as a multi-media function, etc.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: June 30, 1998
    Assignee: SamSung Electronics Co., Ltd.
    Inventor: Jae-Chun Choi