Patents by Inventor Yong-seop Yoon

Yong-seop Yoon 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: 20080231665
    Abstract: The inkjet printhead includes substrate having an ink feed hole formed to supply ink, a chamber layer stacked on the substrate, and including a plurality of main ink chambers formed therein with the ink feed hole therebetween and a plurality of compensation ink chambers formed therein between the main ink chambers that face each other; and a nozzle layer stacked on the chamber layer, and including a plurality of main nozzles corresponding to the main ink chambers and a plurality of compensation nozzles corresponding to the compensation ink chambers.
    Type: Application
    Filed: September 24, 2007
    Publication date: September 25, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Moon-chul Lee, Myong-jong Kwon, Yong-seop Yoon, Jin-wook Lee, Yong-won Jeong, Donk-sik Shim
  • Patent number: 7416675
    Abstract: A method of fabricating inkjet print heads usable in an ink jet printer. The method of fabricating ink jet print heads includes preparing a plurality of ink jet print heads on a wafer while forming sub sidewalls around the ink jet print heads when the ink jet print heads are being prepared, attaching protection films onto the sub sidewalls of the wafer and the ink jet print heads, and dicing the ink jet print heads and detaching the individual ink jet print heads from the wafer. In the method, the ink jet print heads are diced in a wafer unit. Particularly, connect pads of the ink jet print heads can be prevented from being contaminated by the protection films.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: August 26, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-sik Shim, Hyung Choi, Yong-seop Yoon
  • Publication number: 20080128386
    Abstract: A method of manufacturing an inkjet printhead includes forming an insulating layer, heaters, and electrodes sequentially on a substrate, depositing a chamber layer having a plurality of ink chambers on the insulating layer, forming an ink feed hole in the substrate and the insulating layer to supply ink to the ink chambers, preparing a nozzle layer having a plurality of nozzles and an adhesive layer formed on a lower surface of the nozzle layer, and bonding the nozzle layer to the chamber layer.
    Type: Application
    Filed: August 14, 2007
    Publication date: June 5, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yong-seop YOON, Hyung Choi, Moon-chul Lee, Yong-won Jeong, Dong-sik Shim
  • Publication number: 20080122899
    Abstract: An inkjet print head includes a substrate in which an ink feed hole having an hourglass cross-section is formed, a chamber layer that is stacked on the substrate and has a plurality of ink chambers into which ink supplied from the ink feed hole is filled, and a nozzle layer that is stacked on the chamber layer and has a plurality of nozzles through which the ink is ejected.
    Type: Application
    Filed: July 16, 2007
    Publication date: May 29, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Moon-chul LEE, Byung-ha Park, Dong-sik Shim, Yong-seop Yoon, Sung-joon Park, Yong-won Jeong, Kyong-il Kim
  • Publication number: 20080106578
    Abstract: A thermal inkjet printhead includes a plurality of bonding pads to which an external voltage is applied, a plurality of common wires connected to the each of the bonding pads, respectively, a plurality of individual wires connected to each of the common wires, respectively, and heaters connected to each of the individual wires, respectively, to generate ink bubbles by heating ink, wherein each of the common wires includes a first metal layer and a first metal bump which are formed on the first metal layer.
    Type: Application
    Filed: May 1, 2007
    Publication date: May 8, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-sik SHIM, Yong-seop Yoon, Moon-chul Lee, Yong-won Jeong, Hyung Choi
  • Publication number: 20080079781
    Abstract: An inkjet printhead and a method of manufacturing the same. The inkjet printhead may include a substrate through which an ink feed hole to supply ink is formed, a chamber layer stacked above the substrate and including a plurality of ink chambers filled with ink supplied from the ink feed hole, and a nozzle layer stacked on the chamber layer, wherein a plurality of nozzles through which ink is ejected and a plurality of via holes are formed in the nozzle layer.
    Type: Application
    Filed: May 1, 2007
    Publication date: April 3, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dong-sik Shim, Yong-seop Yoon, Moon-chul Lee, Chan-bong Jun, Hyung Choi, Yong-won Jeong
  • Publication number: 20080049073
    Abstract: An inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a substrate including one or more ink feed holes to supply ink, which penetrates through the substrate, a chamber layer stacked on the substrate and including a plurality of ink chambers, in which the ink supplied from the ink feed hole is filled, a nozzle layer stacked on the chamber layer and including a plurality of nozzles, through which the ink is ejected, and a support member attached on a lower surface of the substrate to support the substrate.
    Type: Application
    Filed: February 13, 2007
    Publication date: February 28, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Moon-chul Lee, Sang-hyun Kim, Dong-sik Shim, Hyung Choi, Keon Kuk, Yong-seop Yoon
  • Patent number: 7329553
    Abstract: A method of fabricating a one-way transparent optical system by which external light is effectively intercepted and internal light passes nearly without loss is provided. The method includes: forming a photoresist on an upper surface of a transparent substrate; heating and carbonizing the photoresist to form a black body layer; patterning the black body layer to form a plurality of light-absorbing materials on the transparent substrate; and forming protrusion structures having a shape of a convex lens shape for refracting incident light toward a corresponding light-absorbing material of the light-absorbing materials, on the transparent substrate on which the light-absorbing materials are formed.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: February 12, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-seop Yoon, Byoung-ho Cheong, Seok-whan Chung
  • Publication number: 20070279458
    Abstract: An inkjet printhead and a method of manufacturing the inkjet printhead. The inkjet printhead includes a substrate including a trench formed to a predetermined depth in an upper portion of the substrate and an ink feed hole formed through a bottom surface of the trench to supply ink, an etch stop layer formed of a metal and formed on an inner surface of the trench, a plurality of heaters, to create bubbles by heating ink, formed on the substrate, a plurality of electrodes, to apply a current to the plurality of heaters, formed on the substrate, a chamber layer stacked on the substrate and including a plurality of ink chambers formed above respective heaters to receive ink from the ink feed hole via the trench, and a nozzle layer stacked on the chamber layer and including a plurality of nozzles to eject ink from the plurality of ink chambers.
    Type: Application
    Filed: January 16, 2007
    Publication date: December 6, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Moon-chul Lee, Dong-sik Shim, Hyung Choi, Yong-seop Yoon
  • Publication number: 20070126804
    Abstract: Provided is a thermal inkjet printhead. The inkjet printhead includes a substrate; an insulating layer formed on the substrate; a heater formed on the insulating layer and an electrode to apply current to the heater; a chamber layer that is stacked on the insulating layer and includes an ink chamber; a nozzle layer that is stacked on the chamber layer and includes a nozzle; and at least a heat transfer layer that is formed inside the insulating layer and dissipates heat generated in by the heater toward the substrate.
    Type: Application
    Filed: July 11, 2006
    Publication date: June 7, 2007
    Inventors: Dong-sik Shim, Hyung Choi, Yong-seop Yoon, Chang-seung Lee
  • Publication number: 20070126772
    Abstract: A method of fabricating inkjet print heads usable in an ink jet printer. The method of fabricating ink jet print heads includes preparing a plurality of ink jet print heads on a wafer while forming sub sidewalls around the ink jet print heads when the ink jet print heads are being prepared, attaching protection films onto the sub sidewalls of the wafer and the ink jet print heads, and dicing the ink jet print heads and detaching the individual ink jet print heads from the wafer. In the method, the ink jet print heads are diced in a wafer unit. Particularly, connect pads of the ink jet print heads can be prevented from being contaminated by the protection films.
    Type: Application
    Filed: June 15, 2006
    Publication date: June 7, 2007
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Dong-sik Shim, Hyung Choi, Yong-seop Yoon
  • Publication number: 20060208607
    Abstract: An actuator, including: a substrate; a middle plate supported above the substrate to be rotatable, about a rotation axis, with respect to the substrate; a stage connected to and spaced above the middle plate; a pair of first driving electrodes located on the substrate around the rotation axis; and a pair of second driving electrodes located on the substrate surrounding the first driving electrodes. Torsion springs connect opposite sides of the middle plate to support the middle plate above the substrate. A connecting member connects the stage and middle plate.
    Type: Application
    Filed: March 8, 2006
    Publication date: September 21, 2006
    Inventors: Yong-seop Yoon, Hyung Choi
  • Publication number: 20060115914
    Abstract: A method of fabricating a one-way transparent optical system by which external light is effectively intercepted and internal light passes nearly without loss is provided. The method includes: forming a photoresist on an upper surface of a transparent substrate; heating and carbonizing the photoresist to form a black body layer; patterning the black body layer to form a plurality of light-absorbing materials on the transparent substrate; and forming protrusion structures having a shape of a convex lens shape for refracting incident light toward a corresponding light-absorbing material of the light-absorbing materials, on the transparent substrate on which the light-absorbing materials are formed.
    Type: Application
    Filed: December 1, 2005
    Publication date: June 1, 2006
    Inventors: Yong-seop Yoon, Byoung-ho Cheong, Seok-whan Chung
  • Patent number: 7042137
    Abstract: An actuator using an organic film membrane is provided and includes a substrate having a cavity with a bottom portion at a predetermined depth in the upper center, an organic film membrane attached on the upper surface of the substrate to close the upper portion of the cavity, and a driving electrode arranged on the organic film membrane. The driving electrode is driven by a piezoelectricity force or an electrostatic force. The membrane of the actuator can be easily fabricated, and the size of the actuator can be reduced while improving a yield.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: May 9, 2006
    Assignee: Samsung Electronics Co. Ltd.
    Inventor: Yong-seop Yoon
  • Patent number: 6947197
    Abstract: A micromirror actuator having a micromirror, which is operative using an electrostatic force with a low voltage and wherein an electrostatic force opposite to the driving force of the micromirror is blocked, and a method for manufacturing the same, are provided. The micromirror actuator includes a substrate, a trench in which at least one electrode is formed, supporting posts installed at opposite sides of the trench, a torsion bar supported by the supporting posts, and the micromirror including a driving unit which faces the trench when the micromirror is in a horizontal state, and a reflecting unit, which is elastically rotated about the torsion bar, to reflect an optical signal. The actuator also includes a shielding electrode installed to face the reflecting unit when the micromirror is in a horizontal state and to block an electrostatic force occurring between the reflecting unit and the electrode.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: September 20, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-seop Yoon, Young-hoon Min, Ki-deok Bae
  • Patent number: 6931171
    Abstract: An actuator which can be actively driven so as to precisely control a driving angle of a micromirror, and a manufacturing method thereof are provided. The micromirror actuator includes a substrate, a trench, a micromirror, and a driving angle control unit. The trench is formed in a predetermined position of the substrate and has at least one electrode. The micromirror rotates by an electrostatic force generated through an interaction with the at least one electrode so as to reflect incident light in a predetermined direction. The driving angle control unit supports the micromirror so as to control the position of an actuation shaft of the micromirror. Accordingly, the micromirror can stand erect at an accurate right angle without an additional actuator for correcting the error in the driving angle of the micromirror so as to reduce insertion loss.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: August 16, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-seop Yoon, Hyung Choi
  • Publication number: 20050139577
    Abstract: A microelectromechanical system (MEMS) comb actuator materialized in an insulating material and a manufacturing method thereof are provided. The MEMS comb actuator includes a stationary comb fixed to a substrate; a movable comb separated from the substrate; a post fixed to the substrate; and a spring connected to the post to be separated from the substrate so as to movably support the movable comb. The stationary comb, the movable comb, the post, and the spring are formed in an insulating material layer formed on the substrate, and a metal coating layer is formed at least on the surface of the stationary comb and the movable comb.
    Type: Application
    Filed: February 3, 2003
    Publication date: June 30, 2005
    Inventors: Sung-Chul Kim, Yong-Seop Yoon
  • Patent number: 6894819
    Abstract: A micromirror actuator includes a first substrate, at least one lower electrode, a micromirror, a two part second substrate, an upper electrode, a pair of support posts, and torsion bars. In the first substrate, a trench having a predetermined shape is formed. The lower electrode is formed in the trench. The micromirror faces the trench to be operative to pivot due to electrostatic forces and selectively to reflect incident light depending on pivoting positions thereof. The parts of the second substrate are formed on a portion of the first substrate and underneath the micromirror, respectively, and prevent the deformation of the micromirror. The upper electrode is formed on a portion of the second substrate on the first substrate and applies power to the micromirror. The pair of support posts protrude from the first substrate beside both sides of the trench. The torsion bars connect both sides of the micromirror to the pair of support posts.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: May 17, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-seop Yoon
  • Publication number: 20050052261
    Abstract: A thin film resonator having a membrane layer formed on top of a substrate, a lower electrode formed on part of the top surface of the membrane layer, a piezoelectric layer formed on top of the lower electrode, an upper electrode formed on top of the piezoelectric layer, and a mass loading layer interposed between the lower electrode and the membrane layer and having a predetermined mass. This structure enables precise adjustment of the resonant frequency of the thin film resonator, thereby providing a more precise filter.
    Type: Application
    Filed: September 9, 2004
    Publication date: March 10, 2005
    Inventors: Yong-seop Yoon, Yun-kwon Park, Hyung Choi
  • Publication number: 20040246558
    Abstract: A micromirror actuator having a micromirror, which is operative using an electrostatic force with a low voltage and wherein an electrostatic force opposite to the driving force of the micromirror is blocked, and a method for manufacturing the same, are provided. The micromirror actuator includes a substrate, a trench in which at least one electrode is formed, supporting posts installed at opposite sides of the trench, a torsion bar supported by the supporting posts, and the micromirror including a driving unit which faces the trench when the micromirror is in a horizontal state, and a reflecting unit, which is elastically rotated about the torsion bar, to reflect an optical signal. The actuator also includes a shielding electrode installed to face the reflecting unit when the micromirror is in a horizontal state and to block an electrostatic force occurring between the reflecting unit and the electrode.
    Type: Application
    Filed: December 17, 2001
    Publication date: December 9, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong-seop Yoon, Young-hoon Min, Ki-deok Bae