Patents by Inventor Cheol AHN

Cheol AHN 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: 9465354
    Abstract: An imaging cartridge includes a photoconductive unit including a photoconductor on which an elastic latent image is formed; a development unit including a development roller that supplies toner to the photoconductor to develop the toner and a gap maintaining member that constrains an approach distance of the development roller with respect to the photoconductor; a first position determining portion provided in the development unit; a lateral bracket that is fixed to a side portion of the photoconductive unit and has a second position determining portion that guides the first position determining portion so as to movably support the development unit; and an elastic member that applies to the development unit an elastic force in a direction in which the development roller approaches the photoconductive unit.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: October 11, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-chan Park, Dong-cheol Ahn, Sang-hoon Lee, Seong-ho Jeong
  • Publication number: 20160270234
    Abstract: A flexible circuit board and display device including the same are disclosed. In one aspect, the flexible circuit board includes a base film including a bending area and a plurality of signal wires formed over the bending area of the base film. At least one through-hole is defined in the base film.
    Type: Application
    Filed: February 23, 2016
    Publication date: September 15, 2016
    Inventor: Hyeong-Cheol AHN
  • Publication number: 20160266690
    Abstract: A display device, including a display panel that displays an image; a flexible printed circuit board including an attaching part attached to one end of the display panel and a curved part extending from the attaching part and not overlapping with the display panel; a window assembly on an upper surface of the display panel; an adhesive part between the window assembly and the display panel to couple the display panel and the window assembly; and a compensating part not overlapping with the display panel, overlapping with the curved part, and on a same layer as the attaching part.
    Type: Application
    Filed: October 28, 2015
    Publication date: September 15, 2016
    Inventors: Hyeong-Cheol AHN, Won-il LEE, Byughoon CHAE
  • Publication number: 20160147361
    Abstract: A display device with reduced chance of pad unit corrosion is presented. The display device includes: a display panel configured to display an image, the display panel including a first pad unit; a touch screen panel (TSP) attached to an upper portion of the display panel, the touch screen panel including a second pad unit; a TSP flexible printed circuit board configured to include one end that is connected to the second pad unit of the touch screen panel; a window substrate configured to cover the touch screen panel; and a TSP adhesive layer interposed between the touch screen panel and the window substrate to adhere the window substrate to the touch screen panel, wherein the TSP adhesive layer is formed such that the TSP adhesive layer at least partially covers a TSP connection part the TSP flexible printed circuit board is connected to the second pad unit of the touch screen panel.
    Type: Application
    Filed: May 12, 2015
    Publication date: May 26, 2016
    Inventor: Hyeong Cheol AHN
  • Patent number: 9274374
    Abstract: A receiving container for a display device includes a bottom plate, a sidewall and a grounding unit. The sidewall is extended from the bottom plate to define a receiving space. The grounding unit is integrally formed with the bottom plate. The grounding unit includes a grounding member that grounds a circuit board received in the receiving space. The circuit board includes a grounding electrode and the grounding member corresponds to the grounding electrode. The grounding member is formed on a rear surface of the bottom plate. The grounding member may include a protrusion or a projected portion having an elastic structure.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ahn-Ho Jee, Kun-Bin Lee, Dong-Hwan Kim, Hyeong-Cheol Ahn
  • Publication number: 20150323897
    Abstract: An imaging cartridge includes a photoconductive unit including a photoconductor on which an elastic latent image is formed; a development unit including a development roller that supplies toner to the photoconductor to develop the toner and a gap maintaining member that constrains an approach distance of the development roller with respect to the photoconductor; a first position determining portion provided in the development unit; a lateral bracket that is fixed to a side portion of the photoconductive unit and has a second position determining portion that guides the first position determining portion so as to movably support the development unit; and an elastic member that applies to the development unit an elastic force in a direction in which the development roller approaches the photoconductive unit.
    Type: Application
    Filed: January 8, 2015
    Publication date: November 12, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-chan PARK, Dong-cheol AHN, Sang-hoon LEE, Seong-ho JEONG
  • Patent number: 9182739
    Abstract: An electrophotographic image forming apparatus is provided including a body including an opening and a first coupler, a photoreceptor cartridge including a second coupler connected to the first coupler, a first gear connected to the second coupler, and a mounting portion, and attached to or detached from the body through the opening; and a development cartridge including a second gear connected to the first gear and attached or detached from the mounting portion through the opening while the photoreceptor cartridge is mounted in the body.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-hoon Lee, Young-chae Kim, Sang-jin Park, Dong-cheol Ahn, Ki-hyun Yoo, Seung-gweon Lee, Ho-jin Jang
  • Publication number: 20150168520
    Abstract: Disclosed herein is a magnetic resonance imaging apparatus which includes a connector. A magnetic resonance imaging apparatus includes a static coil module configured to form a static field in a bore, a gradient coil module which includes at least one primary coil configured to form a gradient field in the static field and at least one shield coil configured to cancel an eddy current formed in the static coil module, and a connector which includes a base made of an insulating material and a plurality of conductors which are coupled to the base and which are configured to connect the at least one primary coil and the at least one shield coil.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 18, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Suk KWAK, Atul MINHAS, Ku Cheol AHN
  • Publication number: 20150092362
    Abstract: A flexible display device includes a flexible display panel, a driving circuit film, and a spacer. The flexible display panel includes a terminal part configured to receive a driving signal. The driving circuit film includes a base film and a driving chip on the base film. The driving chip being configured to generate the driving signal. The driving circuit film is coupled to the terminal part, is configured to apply the driving signal to the display panel, and bent toward a lower surface of the display panel. The spacer is on the driving circuit film and is configured to maintain a gap between the driving chip and the lower surface of the display panel.
    Type: Application
    Filed: May 13, 2014
    Publication date: April 2, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyeong-Cheol Ahn
  • Publication number: 20150043176
    Abstract: A display device includes a display panel including a curved surface bent along a first direction, a circuit board coupled to the display panel, the circuit board being bent along the first direction in correspondence to the curved surface of the display panel, and an integrated circuit (IC) chip on the circuit board, a short side of the IC chip extending along the first direction.
    Type: Application
    Filed: March 19, 2014
    Publication date: February 12, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyeong-Cheol AHN
  • Patent number: 8896797
    Abstract: A liquid crystal display panel having improved lateral visibility. The liquid crystal display panel includes a first substrate including a pixel electrode formed on a pixel area including a first sub-pixel area and a second sub-pixel area; and a second substrate coupled to the first substrate with a liquid crystal layer accommodated between the first substrate and the second substrate, and including a common electrode formed on an area corresponding to the pixel area, wherein the pixel electrode includes a first sub-pixel electrode formed on the first sub-pixel area; a second sub-pixel electrode formed on the second sub-pixel area; and a contact electrode formed between the first sub-pixel area and the second sub-pixel area, and wherein the first sub-pixel electrode and the contact electrode are spaced apart from each other by a predetermined distance.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hyeong-Cheol Ahn
  • Patent number: 8887180
    Abstract: An electronic device includes a central processing unit (“CPU”), first and second display panels, and first and second display panel drivers. The CPU provides an image signal and an input control signal. The first and second display panels respectively display images. The first and second display panel drivers drive the first and second display panels according to the image signal and the input control signal. The CPU includes an interface transmission unit outputting an interface signal to control the first and second display panel drivers. The first and second display panel drivers respectively include first and second interface receiving units receiving the interface signal from the interface transmission unit. The interface signal includes a display panel selection bit and a data bit.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Deuk-Soo Kim, Kun-Bin Lee, Hyeong-Cheol Ahn, Dong-Won Lee
  • Publication number: 20140313454
    Abstract: A receiving container for a display device includes a bottom plate, a sidewall and a grounding unit. The sidewall is extended from the bottom plate to define a receiving space. The grounding unit is integrally formed with the bottom plate. The grounding unit includes a grounding member that grounds a circuit board received in the receiving space. The circuit board includes a grounding electrode and the grounding member corresponds to the grounding electrode. The grounding member is formed on a rear surface of the bottom plate. The grounding member may include a protrusion or a projected portion having an elastic structure.
    Type: Application
    Filed: July 1, 2014
    Publication date: October 23, 2014
    Inventors: Ahn-Ho JEE, Kun-Bin LEE, Dong-Hwan KIM, Hyeong-Cheol AHN
  • Publication number: 20140306348
    Abstract: A flexible chip on film includes a base insulating layer, a metal layer disposed on an upper surface of the base insulating layer and including a circuit pattern, an integrated circuit chip disposed on an upper surface of the metal layer and electrically connected to the metal layer, a solder resist layer disposed on the metal layer and insulated from the integrated circuit chip, and a reinforcing layer disposed on an upper surface of the solder resist layer. When the chip on film COF is bent, a neutral surface, in which a vector sum of a tensile force and a compressive force becomes substantially zero, is placed in the metal layer.
    Type: Application
    Filed: September 9, 2013
    Publication date: October 16, 2014
    Inventor: Hyeong-Cheol Ahn
  • Patent number: D727411
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: April 21, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-Won Moon, Seung-Chan Park, Dong-Cheol Ahn
  • Patent number: D754247
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: April 19, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Hoon Lee, Ji-Won Moon, Ho-Jin Jang, Seung-Chan Park, Dong-Cheol Ahn, Yong-Il Moon, Dong-Geun Lee, Yong-Kwan Cho
  • Patent number: D754248
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: April 19, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho-Jin Jang, Ji-Won Moon, Seung-Chan Park, Sang-Hoon Lee, Dong-Cheol Ahn, Yong-Il Moon, Dong-Geun Lee, Yong-Kwan Cho
  • Patent number: D755283
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 3, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Hoon Lee, Ji-Won Moon, Ho-Jin Jang, Seung-Chan Park, Dong-Cheol Ahn, Yong-Il Moon, Dong-Geun Lee, Yong-Kwan Cho
  • Patent number: D755888
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: May 10, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Hoon Lee, Ji-Won Moon, Ho-Jin Jang, Seung-Chan Park, Dong-Cheol Ahn, Yong-Il Moon, Dong-Geun Lee, Yong-Kwan Cho
  • Patent number: D765164
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 30, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-Chan Park, Sang-Hoon Lee, Ji-Won Moon, Dong-Cheol Ahn, Ho-Jin Jang, Yong-Il Moon, Dong-Geun Lee, Yong-Kwan Cho