Patents by Inventor Seong Choi

Seong 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: 20080297299
    Abstract: Provided are an inductor, which is vertically formed, and an electronic device having the inductor, and more particularly, an inductor capable of minimizing loss of a surface area and accomplishing high efficiency impedance by vertically forming the inductor in a plurality of insulating layers, and an electronic device having the same. The inductor includes a plurality of conductive lines disposed in the insulating layers; and vias vertically formed in the insulating layers to electrically connect the plurality of conductive lines. When a board or an electronic device including an inductor proposed by the present invention is manufactured, the inductor can occupy a minimum area in the electronic device or board while providing high inductance. In particular, the surface area of the electronic device or board occupied by the inductor can be remarkably decreased to reduce manufacturing costs.
    Type: Application
    Filed: March 24, 2008
    Publication date: December 4, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Ho Gyeong Yun, Kwang Seong Choi, Jong Tae Moon
  • Publication number: 20080285978
    Abstract: Provided is an optical hybrid module in which an optical device, a filter, an amplifier and an antenna are hybrid-integrated, which includes: a silicon optical bench disposed on a substrate and having an optical fiber and an optical device; an amplifier disposed on the substrate and connected to the optical device disposed on the silicon optical bench to amplify a signal transmitted from the optical device; and an antenna disposed on the substrate to be connected to the amplifier and transmitting a signal amplified by the amplifier. Thus, a foot-print module may be embodied by disposing an antenna and a filter on a single- or multi-layer substrate and providing a bias required for the optical device and the amplifier through a solder ball. Also, due to the antenna and filter disposed on the substrate, an expensive connector is not needed, and thus a production costs can be reduced.
    Type: Application
    Filed: March 24, 2008
    Publication date: November 20, 2008
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kwang Seong Choi, Yong Duck Chung, Jae Sik Sim, Jong Tae Moon, Hyun Kyu Yu, Je Ha Kim
  • Patent number: 7452432
    Abstract: Disclosed herein are an apparatus for and a method of bonding a nano-tip using electrochemical etching, in which a good bonding stability can be provided. The nano-tip bonding apparatus comprises a glass plate having a top surface of a certain desired area. An electrolytic solution having conductivity is placed on the top surface of the glass plate by means of surface tension. Means for moving reciprocally a base material having conductivity in opposite direction is provided. A carbon nano-tube is adhered to a pointed tip of the base material by means of an adhesive. An end portion of the carbon nano-tube is to be immersed in the electrolytic solution. A power supply is provided for applying an electric power to the electrolytic solution and the base material.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: November 18, 2008
    Assignee: Korean Advanced Institute of Science and Technology
    Inventors: Soo Hyun Kim, Jun Sok Lee, Jai Seong Choi, Gyung Soo Kang
  • Publication number: 20080265740
    Abstract: A plasma display panel is disclosed, which includes a first panel provided with an address electrode, a first dielectric, and a phosphor on a first substrate, and a second panel bonded to the first panel by interposing a barrier therebetween, including a transparent electrode, a bus electrode, a second dielectric provided with high dielectric particles, and a protective layer on a second substrate.
    Type: Application
    Filed: April 2, 2008
    Publication date: October 30, 2008
    Inventors: Young Han Lee, Ho Seong Choi, Sung Chun Choi
  • Publication number: 20080137178
    Abstract: Provided is a reflection-type optical modulation module. According to the reflection-type optical modulation module, an anti-reflective thin film is formed on the optical input/output side surface of a waveguide to reduce optical coupling loss, and also a high-reflective thin film is formed on the opposite side surface to feed back a modulated optical signal. Thus, even when the length of an absorption layer is shortened, a sufficient optical path length is available, and it is possible to obtain a sufficient extinction ratio. Since the optical path length is sufficiently long despite a reduction in the length of the device, capacitance is reduced, and high-speed operation is enabled. In addition, only one lensed optical fiber for optical input and output is used, and thus it is possible to reduce production cost and the number of installation processes.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 12, 2008
    Inventors: Yong Duck CHUNG, Kwang Seong CHOI, Jae Sik SIM, Je Ha KIM
  • Patent number: 7331723
    Abstract: Provided are an enhanced structure of a coplanar waveguide that is a kind of transmission line used for optical communication for radio frequency (RF), and an optical communication module employing the same. While having a basic structure including a conductive strip and ground strips at both sides of the conductive strip on a dielectric substrate, the coplanar waveguide has the structure in which metal patterns of a portion of the conductive strip located around points where an RF propagation direction is changed and of a portion of an inside ground strip are removed to make electrical lengths of an outside ground strip and the inside ground strip similar each other. Using the coplanar waveguide, it is possible to fabricate an optical module that has an optimized RF characteristic and also can freely change an RF propagation direction of several tens GHz, without an additional process.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: February 19, 2008
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ho Gyeong Yoon, Kwang Seong Choi, Yong Hwan Kwon, Joong Seon Choe
  • Publication number: 20080038532
    Abstract: Disclosed are a method of forming a nanoparticle array, including preparing a trench having a channel structure between upper and lower substrates, preparing a dispersion of nanoparticles, and bringing the trench into contact with the dispersion such that the dispersion enters the channel of the trench due to capillary force, and a nanoparticle array prepared thereby. According to this invention, the nanoparticles may be uniformly arranged at a high density on a substrate having a large area at low cost.
    Type: Application
    Filed: February 28, 2007
    Publication date: February 14, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong YI, June KOO, Seong CHOI, Jae CHOI, Young CHA, Hyo LEE, Hyuk CHOI, Kwang KIM
  • Publication number: 20080029760
    Abstract: Interfused nanocrystals including two or more materials, further including an alloy layer formed of the two or more materials. In addition, a method of preparing the interfused nanocrystals. In the interfused nanocrystals, the alloy layer may be present at the interface between the two or more nanocrystals, thus increasing the material stability. A material having excellent quantum efficiency in the blue light range may be synthesized.
    Type: Application
    Filed: July 9, 2007
    Publication date: February 7, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Shin Jun, Eun Jang, Seong Choi
  • Patent number: 7298933
    Abstract: Provided is an optical module including a microstrip line, a traveling wave type optical device positioned in the end of the microstrip line, and at least one balanced open stub connected to the microstrip line for the impedance matching at a specific frequency such as 40 GHz and 60 GHz. For the fine tuning, laser trimming can be applied to the stub. A transition region is formed between the optical device and the microstrip line. A termination resistor is formed to face the microstrip line with the optical device therebetween. A bandwidth can be controlled at a specific frequency by adjusting a number of the stubs or a value of the termination resistor.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 20, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Seong Choi, Jong Hyun Lee, Yong Duck Chung, Young Shik Kang, Jong Tae Moon, Je Ha Kim
  • Publication number: 20070235714
    Abstract: A nanowire composite and a method of preparing the nanowire composite comprise a template having a plurality of hollow channels, nanowires formed within the respective channels of the template, and a functional element formed by removing a portion of the template so that one or more of the nanowires formed within the portion of the template are exposed. Since the nanowire composite can be prepared in a simple manner at low costs and can be miniaturized, the nanowire composite finds application in resonators and a variety of sensors.
    Type: Application
    Filed: May 26, 2006
    Publication date: October 11, 2007
    Inventors: Soon Kwon, Byoung Choi, Eun Lee, Kyung Cho, In Han, Jae Lee, Seong Choi
  • Publication number: 20070232726
    Abstract: An anisotropic conductive adhesive material and a display panel unit having the same is disclosed. The anisotropic conductive adhesive material may comprise a binder; and a conductive filler which is uniformly distributed inside the binder and is not distorted by thermal adhesion. Accordingly, the conductive filler may be uniformly distributed, thereby enhancing an electric contact quality between an electrode of a glass substrate and an FPC and reducing contact resistance.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 4, 2007
    Applicant: LG ELECTRONICS INC.
    Inventor: Ho-Seong Choi
  • Publication number: 20070185261
    Abstract: Provided is a siloxane dispersant having a structure including a head part having an affinity for nanoparticles and a tail part having an affinity for a polydimethylsiloxane (PDMS) resin, and a nanoparticle paste composition comprising the same. The dispersant significantly improves dispersion efficiency of a polydimethylsiloxane resin system which is used in preparation of high-output light sources such as UV LEDs and the like.
    Type: Application
    Filed: July 27, 2006
    Publication date: August 9, 2007
    Inventors: Jae Lee, Seong Choi, Eun Lee, Jae Choi
  • Publication number: 20070171515
    Abstract: An electroabsorption (EA) duplexer in which an optical amplifier, a photodetector, and an optical modulator are monolithically integrated to obtain a high radio frequency (RF) gain in radio-over fiber (RoF) link optical transmission technology is provided. The EA duplexer includes a substrate, a separation area, an optical detection/modulation unit, and an optical amplification unit. The separation area includes a first epitaxial layer formed of at least one material layer on the substrate. The first epitaxial layer functions as a first optical waveguide. The optical detection/modulation unit includes a second epitaxial layer formed of at least one material layer on the first epitaxial layer to detect and modulate an optical signal. The second epitaxial layer functions as a second optical waveguide. The optical amplification unit includes the second optical waveguide and a third epitaxial layer formed of at least one material layer on the second epitaxial layer to amplify an optical signal.
    Type: Application
    Filed: June 13, 2006
    Publication date: July 26, 2007
    Inventors: Young Shik Kang, Je Ha Kim, Sung Bock Kim, Yong Duck Chung, Kwang Seong Choi
  • Publication number: 20070145042
    Abstract: Coffee maker and microwave oven and method for controlling the same are provided. The coffee maker and microwave oven includes an outfit room for mounting various electric components on an inside thereof, a case at one side of the outfit room, a water tank in the case, a funnel having a filter placed thereon for extraction of coffee, a jug under the funnel for storage of extracted coffee, a water supply pipe having one end connected to the water tank, the other end position over the funnel, and a portion on a bottom of the case, and a heater assembly on the bottom of the case, the heater assembly having a heating heater for heating potable water passing through the water supply pipe, and a heat conservation heater for heating coffee in the jug to maintain a temperature of the coffee constant.
    Type: Application
    Filed: February 28, 2007
    Publication date: June 28, 2007
    Inventors: Man Park, Jung Kwon, Wang Lee, Dae Kim, Wan Cho, Seong Choi, Dong Seo
  • Publication number: 20070125697
    Abstract: The present invention discloses a submerged hollow fiber membrane module which is of such a structure that it is easy to expand a module processing capability according to a treatment capacity, provides convenient module coupling properties and module manufacturing properties, maintains a stable flux under an efficient air diffusion condition and prevents the damage of membranes and water leakage caused by the loosening of module connecting regions.
    Type: Application
    Filed: February 5, 2004
    Publication date: June 7, 2007
    Inventors: Moo-Seok Lee, Kwang Lee, Yong Cheol Shin, Seong Choi, Young Woo
  • Publication number: 20070112101
    Abstract: Disclosed herein are a dispersant for dispersing nanoparticles that are surface-bound with capping ligands in a polymer matrix having an epoxide group, a method for dispersing the nanoparticles using the dispersant, and a nanoparticle-containing thin film including the dispersant.
    Type: Application
    Filed: August 30, 2006
    Publication date: May 17, 2007
    Inventors: Seong Choi, Jae Lee, Jae Choi, Eun Lee, Don Lee
  • Publication number: 20070098923
    Abstract: The present invention relates to a polarizing liquid crystal film having no alignment layer and a method for manufacturing the same, a light guide plate integrated with the polarizing liquid crystal film, and a backlight unit. The polarizing liquid crystal film of the present invention includes an adhesive layer, a liquid crystal layer aligned on one side of the adhesive layer, and a protection film arranged on an opposite side of the adhesive layer to protect the liquid crystal layer. Further, the method for manufacturing a polarizing liquid crystal film includes preparing a liquid crystal alignment film, aligning liquid crystal on the liquid crystal alignment film, providing an adhesive layer on the liquid crystal, attaching a protection film protecting the liquid crystal on the adhesive layer, and exfoliating the liquid crystal alignment film. Furthermore, there is provided a light guide plate integrated with the polarizing liquid crystal film and a backlight unit including the same.
    Type: Application
    Filed: May 1, 2006
    Publication date: May 3, 2007
    Inventors: Seong Choi, Sung Kim, Hun Pak, Tae Jang
  • Publication number: 20070085943
    Abstract: The present disclosure relates to a liquid crystal display (LCD). There is provided an LCD comprising at least one lamp, a light guide plate for converting light incident from the lamp into a surface light source, an LCD panel disposed above the light guide plate for displaying an image thereon, a first reflection plate disposed below the light guide plate and including an end bent to extend parallel to a surface of the light guide plate such that the reflection plate can surround the lamp installed on the surface of the light guide plate, a mold frame including a space for accommodating the lamp, the light guide plate, the LCD panel and the reflection palate therein and including a portion of a sidewall protruding into the LCD to surround the top of the lamp, and a second reflection plate disposed on a rear surface of a portion of the mold frame arranged above the lamp. Therefore, a thin and lightweight LCD can be obtained and lamp efficiency can also be improved.
    Type: Application
    Filed: July 29, 2006
    Publication date: April 19, 2007
    Inventors: Sung Kang, Seong Choi, Jheen Park, Jeoung Lee, Yong Won, Tae Jang
  • Publication number: 20060236918
    Abstract: Interfused nanocrystals including two or more materials, further including a n alloy layer formed of the two or more materials. In addition, a method of preparing the interfused nanocrystals. In the interfused nanocrystals, the alloy layer may be present at the interface between the two or more nanocrystals, thus increasing the material stability. A material having excellent quantum efficiency in the blue light range may be synthesized.
    Type: Application
    Filed: November 9, 2005
    Publication date: October 26, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Shin Jun, Eun Jang, Seong Choi
  • Publication number: 20060240174
    Abstract: The present invention relates to a method for the reduction of acrylamide formation, in which a nucleophilic a-amino group (—NH2) is protonated and converted into a non-nucleophilic amine (—NH3+). The inventive method has the effect of allowing the formation of acrylamide to be highly reduced by simple treatment with a pH-lowering agent. Particularly, when applied to foods or foods ingredients, the inventive method has the effect of allowing the formation of acrylamide to be highly reduced without affecting the flavor and color of the foods or foods ingredients.
    Type: Application
    Filed: September 2, 2003
    Publication date: October 26, 2006
    Inventors: Mun Jung, Dong-Seong Choi, Jin-Woo Ju