Patents by Inventor Choong-Ho Lee

Choong-Ho Lee 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: 20140312546
    Abstract: A metal sheet holding device for manufacturing a pattern mask used in manufacturing processes of a flat panel displays include a first holder and second holder. The first holder includes an adhesive layer contacting edge portions of a metal sheet, and a first frame supporting the metal sheet using the adhesive layer. The second holder includes a second frame below the first frame, a supported plate positioned at the center of the second frame, and an adhered unit positioned between the central portion of a metal sheet and the supported plate. The adhered unit generates an electrostatic force or a magnetic force to hold the central portion of the metal sheet.
    Type: Application
    Filed: October 1, 2013
    Publication date: October 23, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Choong-Ho Lee, Sung-Sik Yun, Tong-Jin Park, Doh-Hyoung Lee
  • Patent number: 8847485
    Abstract: A method of manufacturing a display device includes: forming a display unit on a substrate; disposing a bonding layer including thermosetting resin and surrounding the display unit, on the substrate; forming a sealing substrate including a composite member and a metal layer disposed on one side of the composite member, the composite member including a resin matrix and a plurality of carbon fibers; disposing the sealing substrate on the bonding layer such that the metal layer faces the display unit; and bonding the substrate with the sealing substrate by hardening the bonding layer, connecting a power source to the plurality of carbon fibers to use the composite member as a heating body.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Jung-Min Lee, Kie-Hyun Nam
  • Patent number: 8816216
    Abstract: A method of manufacturing an encapsulation substrate for an organic light emitting diode display, includes fabricating a composite panel by forming an uncured carbon fiber resin portion having a plate shape and including an upper surface and a lower surface and forming an uncured insulating resin portion arranged to surround edges of the carbon fiber resin portion, the uncured insulating resin portion being perforated by a plurality of penetration holes, inserting a plurality of conductive components into corresponding ones of the plurality of penetration holes, covering upper and lower surfaces of the composite panel with metal films and bonding the metal films to the composite panel while simultaneously curing the carbon fiber resin and the insulating resin portion by applying heat and pressure to the composite panel. Therefore, fabrication processes of the encapsulation substrate are simple, and fabrication costs are reduced.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: August 26, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Jung-Min Lee, Kie-Hyun Nam
  • Patent number: 8809932
    Abstract: In one embodiment, the semiconductor memory device includes a semiconductor substrate having projecting portions, a tunnel insulation layer formed over at least one of the projecting semiconductor substrate portions, and a floating gate structure disposed over the tunnel insulation layer. An upper portion of the floating gate structure is wider than a lower portion of the floating gate structure, and the lower portion of the floating gate structure has a width less than a width of the tunnel insulating layer. First insulation layer portions are formed in the semiconductor substrate and project from the semiconductor substrate such that the floating gate structure is disposed between the projecting first insulation layer portions. A dielectric layer is formed over the first insulation layer portions and the floating gate structure, and a control gate is formed over the dielectric layer.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Kyu Cho, Se-Hoon Lee, Kyu-Charn Park, Choong-Ho Lee
  • Patent number: 8809990
    Abstract: Provided are a semiconductor device including a high voltage transistor and a low voltage transistor and a method of manufacturing the same. The semiconductor device includes a semiconductor substrate including a high voltage region and a low voltage region; a high voltage transistor formed in the high voltage region and including a first active region, a first source/drain region, a first gate insulating layer, and a first gate electrode; and a low voltage transistor formed in the low voltage region and including a second active region, a second source/drain region, a second gate insulating layer, and a second gate electrode. The second source/drain region has a smaller thickness than a thickness of the first source/drain region.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Hyun-pil Noh, Choong-ho Lee, Seog-heon Ham
  • Patent number: 8801485
    Abstract: A frit sealing system and a method of manufacturing an organic light-emitting display (OLED) using the frit sealing system are disclosed. In one embodiment, the frit sealing system includes: a thermal expansion film formed on the second substrate to pressurize the second substrate when heat is applied to the frit and thermal expansion film, wherein the frit is interposed between the first and second substrates and a mask formed on the thermal expansion film.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee
  • Patent number: 8802200
    Abstract: A method of cleaning off organic deposition material accumulated on a mask includes forming an organic deposition material pattern on a substrate using the mask, which includes a plurality of slots, in a deposition chamber including a deposition source; transporting the mask to a stock chamber that is maintained at a vacuum and adjacent to the deposition chamber; and partially cleaning off the organic deposition material accumulated along the boundaries of the slots of the mask in the stock chamber. A system to clean off an organic deposition material accumulated on a mask having a plurality of slots, includes a deposition chamber including a deposition source; and a stock chamber that is maintained at substantially the same vacuum as the deposition chamber and includes a cleaning device that cleans off the organic deposition material accumulated on the mask.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee, Yoon-Chan Oh, Hee-Seong Jeong
  • Patent number: 8790750
    Abstract: A thin film deposition apparatus that can be simply applied to manufacture a thin film on a large substrate on a mass scale and that improves manufacturing yield includes a deposition source; a first nozzle disposed at a side of the deposition source and including first slits arranged in a first direction; a second nozzle assembly disposed opposite to the deposition source and including strings arranged in the first direction; and a barrier wall assembly including barrier walls disposed between the first nozzle and the second nozzle assembly to partition a space between the first nozzle and the second nozzle assembly into a plurality of sub-deposition spaces. The second nozzle assembly is movable relative to the target along a plane parallel to a surface of the target, or the target is movable relative to the second nozzle along the plane.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: July 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee
  • Patent number: 8778115
    Abstract: A method of efficiently manufacturing a large-sized mask is disclosed. In one embodiment, the method includes: 1) providing a first mask member comprising i) a first pattern unit having a plurality of slits, ii) a first buffer unit spaced apart from the first pattern unit, and iii) a first bonding unit interconnecting the first pattern unit and the first buffer unit and 2) providing a second mask member comprising i) a second pattern unit having a plurality of slits, ii) a second buffer unit spaced apart from the second pattern unit, and iii) a second bonding unit interconnecting the second pattern unit and the second buffer unit. The method may further include contacting the first bonding unit and the second bonding unit; and connecting the first mask member to the second mask member while tensile forces are applied to the first mask member and the second mask member.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Yoon-Chan Oh, Seung-Ho Choi, Suk-Won Jung, Jung-Soo Rhee
  • Publication number: 20140177055
    Abstract: A laser processing apparatus includes: a laser generator that generates a laser beam, a diffractive optical element that divides the laser beam generated by the laser generator into a plurality of sub-laser beams, and a beam gap adjustor that adjusts a gap between neighboring ones of the plurality of sub-laser beams. Therefore, by installing a diffractive optical element that divides a laser beam that is generated by the laser generator into the plurality of sub-laser beams and a beam gap adjustor to adjust a gap between a plurality of sub-laser beams, the laser processing apparatus can form a processing pattern of various resolutions in a shadow mask while improving a processing speed of the shadow mask.
    Type: Application
    Filed: November 20, 2013
    Publication date: June 26, 2014
    Inventors: Doh-Hyoung LEE, Choong-Ho LEE, Sung-Sik YUN, Tong-Jin PARK
  • Patent number: 8757088
    Abstract: A mask frame assembly includes a frame, a mask having a deposition pattern and being installable on the frame in a state of being pulled by a first tension force in a first direction, and a tension force applying portion in the mask and configured to apply a second tension force in a second direction that is perpendicular or substantially perpendicular to the first direction.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: June 24, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Jung-Min Lee
  • Patent number: 8746169
    Abstract: A mask frame assembly for thin film deposition includes a frame having an opening and at least two unit masks having end parts in a longitudinal direction fixed to the frame, each of the unit masks comprising first regions and second regions, the first regions having unit masking patterns, each of the unit masking patterns having a plurality of openings for thin film deposition, the unit masking pattern being spaced apart from each other, each of the second regions being interposed between a pair of adjacent ones of the first regions, the first regions having a first thickness from a first surface of the unit masks, and at least a portion of the second regions having a second thickness from a second surface of the unit masks opposite to the first surface of the unit masks, such that the first regions and the at least the portion of the second regions are offset from each other in a direction normal to the first and second surfaces.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: June 10, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Jung-Min Lee, Yoon-Chan Oh
  • Publication number: 20140130647
    Abstract: A sheet cutting apparatus and a sheet cutting method using the same are disclosed. In one aspect, the sheet cutting apparatus includes a holder for rotatably supporting a sheet roll, a lamination unit for pulling and unwinding a front end of the sheet unwound from the sheet roll, a table on which the sheet unwound by the lamination parts is attached, and a tension unit for giving tension to the sheet attached on the table. Since the sheet cutting apparatus may cut the sheet consistently and stably, product quality and production efficiency should increase.
    Type: Application
    Filed: August 27, 2013
    Publication date: May 15, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sung-Sik Yun, Choong-Ho Lee, Tong-Jin Park, Doh-Hyoung Lee
  • Patent number: 8707894
    Abstract: A mask frame assembly for thin film deposition, the mask frame assembly including a frame having an opening; a plurality of masks having deposition patterns, the masks being fixed to the frame such that the deposition patterns extend over the opening; and a balance stick being fixed to the frame such that the balance stick is between two of the plurality of masks, the balance stick made from an elastically tensile material.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: April 29, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Choong-Ho Lee, Yoon-Chan Oh, Jung-Min Lee
  • Patent number: 8692263
    Abstract: A large size organic light emitting diode (OLED) display and manufacturing method thereof are disclosed. In one embodiment, the method includes i) forming a display unit including a plurality of pixels on a substrate, ii) forming a getter layer, a bonding layer and a conductive contact layer around the display unit and iii) manufacturing a sealing member including a flexible polymer film and a metal layer formed on at least one side of the polymer film. The method may further include laminating the sealing member on the substrate using a roll lamination process such that the metal layer contacts the conductive contact layer and curing the contact layer and the conductive contact layer.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: April 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kie Hyun Nam, Sang-Soo Kim, Choong-Ho Lee, Jung-Min Lee
  • Publication number: 20140076869
    Abstract: A laser processing apparatus includes a laser generator for generating laser beams, a diffraction optic element for dividing the laser beam generated by the laser generator into a plurality of sub-laser beams, and a beam number controller for controlling the number of the plurality of sub-laser beams. Accordingly, the diffractive optic element that splits a laser beam generated by the laser beam generator into a plurality of sub-laser beams and the beam number controller that controls the number of sub-laser beams are provided so that the processing speed of a processing target can be improved and, at the same time, the number of laser beams can be promptly controlled, thereby promptly forming various patterns of the processing target.
    Type: Application
    Filed: June 17, 2013
    Publication date: March 20, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Doh-Hyoung Lee, Choong-Ho Lee, Sung-Sik Yun, Tong-Jin Park
  • Patent number: 8674344
    Abstract: A display device includes: a display substrate; a display formed on the display substrate; an encapsulation substrate affixed to the display substrate by an adhering layer surrounding the display, the display substrate including a composite member including a resin matrix and a plurality of carbon fibers and an insulation member attached to an edge of the composite member and forming a through hole; a metal layer positioned on a side of the encapsulation substrate facing the substrate; and a conductive connector filling the through hole and contacting the metal layer. The composite member is stacked with at least two layers with different sizes, and the insulation member contacts sides of the at least two layers and has the same thickness as the composite member.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: March 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee, Kie Hyun Nam
  • Publication number: 20140033975
    Abstract: A frame and a mask assembly having the same. The frame supports both ends of each unit mask, each unit mask applying a tensile force in a first direction. The frame includes a frame main body part forming an opening exposing the unit mask, and a first through hole formed by passing through the frame main body part.
    Type: Application
    Filed: June 14, 2013
    Publication date: February 6, 2014
    Inventors: Yoon-Chan Oh, Choong-Ho Lee, Da-Hee Jeong
  • Publication number: 20140038327
    Abstract: A frit sealing system and a method of manufacturing an organic light-emitting display (OLED) using the frit sealing system are disclosed. In one embodiment, the frit sealing system includes: a thermal expansion film formed on the second substrate to pressurize the second substrate when heat is applied to the frit and thermal expansion film, wherein the frit is interposed between the first and second substrates and a mask formed on the thermal expansion film.
    Type: Application
    Filed: October 7, 2013
    Publication date: February 6, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee
  • Patent number: 8617932
    Abstract: A display device includes a display unit, a sealing substrate, a first metal layer, a second metal layer, and a conductive wire member. The display unit is formed over a substrate. A sealing substrate is secured to the substrate by a bonding layer, and comprising a composite member and an insulating member. A first metal layer is formed over the inner surface of the sealing substrate facing the substrate, and a second metal layer is formed over the outer surface of the sealing substrate. A conductive wire member successively passes through at least two points of each of the first metal layer, the insulating member, and the second metal layer, and is secured to the sealing substrate to provide conduction of the first metal layer and the second metal layer.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: December 31, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Min Lee, Choong-Ho Lee