Patents by Inventor Woo-in Joung

Woo-in Joung 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: 7980681
    Abstract: Disclosed are an ink-jet head and a manufacturing method thereof. The ink-jet head, which has a reservoir storing ink, a chamber being supplied with the ink from the reservoir, a restrictor connecting the reservoir to the chamber, and a nozzle discharging the ink, includes: a chamber plate, in which the chamber is formed; a vibration plate, which is laminated on an upper surface of the chamber plate to cover the chamber and in which a first coil is placed; a first middle plate, which is laminated on a lower surface of the chamber plate and in which the restrictor is formed, and a second coil is placed; and a lower plate part, which is laminated on a lower surface of the first middle plate and in which the reservoir and the nozzle are formed.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: July 19, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang-Jin Kim, Jea-Woo Joung, Young-Seuck Yoo
  • Publication number: 20110164087
    Abstract: An apparatus for cleaning an inkjet print head includes: a cleaning plate disposed to correspond to an inkjet print head with an ink flow space interposed therebetween; and a pneumatic device installed in the ink flow space and removing ink in a direction different from a direction in which ink is discharged by changing a fluid pressure of the ink remaining at a nozzle of the inkjet print head.
    Type: Application
    Filed: July 26, 2010
    Publication date: July 7, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hun Kim, Jae Woo Joung, Young Seuck Yoo, Yoon-Sok Park
  • Publication number: 20110162181
    Abstract: A device for polling a piezoelectric element includes: a polling chamber in which a plurality of piezoelectric elements are disposed; a power supply unit providing voltage to poll the piezoelectric elements; a capacitance measurement unit connected with the piezoelectric elements to measure the capacitance of the piezoelectric elements; and a switching system connected with the power supply unit and the piezoelectric elements within the polling chamber, and selectively providing the voltage of the power supply unit to the piezoelectric elements.
    Type: Application
    Filed: July 22, 2010
    Publication date: July 7, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hun Kim, Jae Woo Joung, Yun Sung Kang, Ju Hwan Yang
  • Patent number: 7968449
    Abstract: A method for manufacturing a printed wiring board having one or more layers of a conductive pattern and an insulating pattern, including forming an insulating pattern on an insulating substrate; semi-hardening at least one of the insulating substrate and the insulating pattern; forming a conductive pattern on the insulating substrate and/or the insulating pattern, thereby providing a stack structure; performing a thermal treatment on the stack structure to fully harden the semi-hardened insulating substrate and/or insulating pattern; and firing the conductive pattern. In the method, the conductive pattern and the insulating pattern are simultaneously formed on the same layer using an inkjet process.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: June 28, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hye Jin Cho, Jae Woo Joung, Sung II Oh
  • Publication number: 20110141199
    Abstract: An inkjet head assembly includes: a tank head having an ink channel formed therein; an inkjet head disposed in the tank head to jet ink introduced through the ink channel; and a mass disposed on the inkjet head and applying a weight to control vibrations when ink is jetted from the inkjet head.
    Type: Application
    Filed: July 1, 2010
    Publication date: June 16, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hun Kim, Jae Woo Joung, Young Seuck Yoo, Yoon Sok Park
  • Publication number: 20110134182
    Abstract: There is provided an inkjet head package including: an ink head having an actuator mounted thereon and ejecting ink to the outside by a driving force of the actuator; an intermediate substrate disposed between the ink head and an ink storage supplying ink to the ink head, and having a socket provided on a surface thereof; and a lead frame provided on an upper surface of the ink head such that the intermediate substrate and the actuator are electrically connected to each other.
    Type: Application
    Filed: October 12, 2010
    Publication date: June 9, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ju Hwan Yang, Jae Woo Joung, Young Seuck Yoo, Jae Hun Kim, Yun Sung Kang
  • Patent number: 7950759
    Abstract: A method of operating an inkjet head to eject ink droplets, for an inkjet head including a pressure chamber that is contracted and expanded in a particular period, including: decompression-operating the membrane, such that the volume of the pressure chamber is increased, in correspondence with the period in which the pressure chamber is expanded; compression-operating the membrane, such that the volume of the pressure chamber is decreased, in correspondence with the time point at which the pressure chamber is converted from an expanded state to a contracted state; decompression-operating the membrane, such that the volume of the pressure chamber is increased, in correspondence with the period in which the pressure chamber is contracted; and compression-operating the membrane, such that the volume of the pressure chamber is decreased, in correspondence with the time point at which the pressure chamber is converted from a contracted state to an expanded state.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: May 31, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young-Jae Kim, Jae-Woo Joung, Chang-Sung Park, Young-Seuck Yoo
  • Patent number: 7950150
    Abstract: Disclosed is a method of manufacturing an inkjet head discharging ink. The method in accordance with an embodiment of the present invention can include: heating the inkjet head to a temperature over a melting point of a filler; filling the inkjet head with the filler such that a gap inside the inkjet head is filled with the filler; and discharging the filler out of the inkjet head such that the filler in the gap of the inkjet head remains.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: May 31, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young-Seuck Yoo, Jae-Woo Joung, Sang-Jin Kim, Won-Chul Sim, Chang-Sung Park
  • Publication number: 20110122197
    Abstract: An inkjet head and an inkjet printer having the inkjet head are disclosed. In accordance with an embodiment of the present invention, the inkjet head includes a chamber housing ink and a nozzle, which discharges the ink housed in the chamber. Here, a plurality of inner wall grooves are formed on an inner wall of the nozzle, in which the plurality of inner wall grooves extends in a lengthwise direction of the nozzle. Thus, the inkjet head can discharge big ink droplets at a high frequency by quickly filling the ink in the nozzle after relatively big ink is discharged.
    Type: Application
    Filed: July 20, 2010
    Publication date: May 26, 2011
    Inventors: Hyun-Ho SHIN, Jae-Woo Joung, Chang-Sung Kim, Yoon-Sok Park, Ji-Han Kwon, Won-Chul Sim, Jae-Sang Lee
  • Publication number: 20110117694
    Abstract: Provided is a solar cell having a spherical surface. The solar cell includes a substrate having a back contact layer formed thereon; a plurality of carbon nanoelectrodes formed on the back contact layer so as to cross the back contact layer at right angles; a p-type junction layer formed to have a plurality of spheres which surround the plurality of carbon nanoelectrodes; an n-type junction layer and a transparent electrode layer that are sequentially laminated on the p-type junction layer; a first electrode formed on one side of the top surface of the back contact layer; and a second electrode formed on one side of the top surface of the transparent layer.
    Type: Application
    Filed: January 20, 2011
    Publication date: May 19, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ro Woon LEE, Jae Woo Joung, Hye Jin Cho
  • Publication number: 20110111600
    Abstract: A method of processing a SOI substrate to form a groove in the SOI substrate in which a silicon layer is stacked on both sides of an oxide layer is disclosed. In accordance with an embodiment of the present invention, the method includes dividing a portion of the silicon layer, in which the groove is to be processed, into a plurality of unit portions, performing dry etching on certain portions of the plurality of divided unit portions such that the oxide layer is exposed and removing remaining portions of the plurality of divided unit portions by removing the oxide layer.
    Type: Application
    Filed: April 19, 2010
    Publication date: May 12, 2011
    Inventors: Chung-Mo Yang, Jae-Woo Joung, Young-Seuck Yoo
  • Publication number: 20110109702
    Abstract: There is provided an inkjet head. An inkjet head according to an aspect of the invention may include: a body having a nozzle in an outer surface thereof; a reservoir provided within the body and containing ink being externally injected; an ink chamber receiving the ink from the reservoir through a restrictor and ejecting the ink to an outside through the nozzle; and a reservoir actuator mounted on the body at a position corresponding to the reservoir and transmitting vibrations to the reservoir.
    Type: Application
    Filed: May 13, 2010
    Publication date: May 12, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hun Kim, Jae Woo Joung, Yun Sung Kang, Ju Hwan Yang
  • Publication number: 20110102508
    Abstract: There is provided a laminate substrate having a bypass valve structure. The bypass valve structure formed in the laminate substrate includes a sloped path connecting a first straight path with a second straight path, and a bypass path connected with at least one of the first and second straight paths and configured as a curved path.
    Type: Application
    Filed: December 29, 2009
    Publication date: May 5, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Changsung Sean Kim, Yongsoo Oh, Jae Woo Joung, Young Seuck Yoo
  • Patent number: 7935170
    Abstract: The present invention relates to a method for manufacturing copper-based nanoparticles, in particular, to a method for manufacturing copper-based nanoparticles, wherein the method includes producing CuO nanoparticles by mixing CuO micropowder and alkylamine in a nonpolar solvent and heating the mixture at 60-300° C.; and producing copper-based nanoparticles by mixing a capping molecule and a reducing agent with the CuO nanoparticles and heating the mixture at 60-120° C. According to the present invention, copper-based nanoparticles can be synthesized using CuO, but not requiring any inorganic reducing agent, in a high yield and a high concentration, so that it allows mass production and easy controlling to desired oxidation number of nanoparticles.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: May 3, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Byung-Ho Jun, Jae-Woo Joung, Joon-Rak Choi
  • Patent number: 7935169
    Abstract: The present invention relates to an apparatus and a method of manufacturing metal nanoparticles, and more particularly to an apparatus including: a precursor supplying part which supplies a precursor solution of metal nanoparticles; a first heating part which is connected with the precursor supplying part, includes a reactor channel having a diameter of 1 to 50 mm, and is heated to the temperature range where any particle is not produced; a second heating part which is connected with the first heating part, includes a reactor channel having a diameter of 1 to 50 mm, and is heated to the temperature range where particles are produced; and a cooler which is connected with the second heating part and collects and cools metal nanoparticles produced at the second heating part which allows continuous mass production of metal nanoparticles.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 3, 2011
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young-Il Lee, Jae-Woo Joung, Byung-Ho Jun, Joon-Rak Choi, Kwi-Jong Lee
  • Publication number: 20110088262
    Abstract: A method for manufacturing an inkjet head is disclosed. The method for manufacturing an inkjet head can include preparing a head body including a vibrating membrane, which is located in an upper portion of the head body, coating a lower electrode over the vibrating membrane, patterning a resist such that an open area is formed over the vibrating membrane, filling a piezoelectric material in the open area, selectively coating an upper electrode over the piezoelectric material, and removing the resist.
    Type: Application
    Filed: December 31, 2009
    Publication date: April 21, 2011
    Inventors: Chung-Mo YANG, Jae-Woo Joung, Won-Chul Sim, Seuck-Young Yoo
  • Patent number: 7918545
    Abstract: An ink-jet head is disclosed. The ink-jet head can include: a channel for holding ink, a nozzle connected with the channel, a pressurizing unit configured to apply pressure to the ink so as to eject the ink, a partition coupled to one side of the channel so as to block the channel, and an actuator configured to deform one side of the channel so as to open the channel. While pressure is applied to the ink, this pressure can be turned on and off, to provide pressure pulses for ejecting the ink. As such, with this arrangement, the ejection properties of the ink-jet head can be adjusted to various settings.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: April 5, 2011
    Assignee: Samsung Electro Mechanics Co., Ltd.
    Inventors: Boum-Seock Kim, Jae-Woo Joung, Ju-Hwan Yang, Young-Seuck Yoo
  • Publication number: 20110063360
    Abstract: An inkjet print head includes a plurality of pressure chambers receiving and storing ink which is to be discharged to a nozzle, a piezoelectric body interposing a membrane with the pressure chamber, the piezoelectric body providing a driving force for discharging ink to each of the pressure chambers, and a measuring unit measuring capacitance of the piezoelectric body so that a temperature of ink being discharged to the nozzle is measured.
    Type: Application
    Filed: December 18, 2009
    Publication date: March 17, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Suk Ho Song, Jae Woo Joung, Yoon Sok Park
  • Publication number: 20110065851
    Abstract: A nonaqueous ink composition for an ink jet and a method of manufacturing ink comprising the same are provided. The nonaqueous ink composition for the ink jet includes: a glycol ether acetate solvent represented by a specific chemical formula; and a polypropylene glycol binder represented by a specific chemical formula. The nonaqueous ink composition for an ink jet has dynamic viscoelasticity obtained by a chemical interaction between the solvent and the binder, exhibits excellent print quality and is capable of high-speed printing.
    Type: Application
    Filed: February 22, 2010
    Publication date: March 17, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jun Young Kim, Jae Woo Joung, Sung Nam Cho, Ha Yoon Song
  • Publication number: 20110063368
    Abstract: There is provided a multi inkjet head package. The multi inkjet head package may include: a plurality of inkjet head assemblies each having a head plate in which an inkjet head discharging ink is housed; a rack in which the head plate is housed so as to expose the inkjet head; and a preliminary fixation portion that is installed on the rack and allows the head plate to be preliminarily fixed to the rack.
    Type: Application
    Filed: January 11, 2010
    Publication date: March 17, 2011
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yong Sik Kim, Jae Woo Joung, Kwan Soo Yun, Won Chul Sim, Pil Joong Kang