Patents by Inventor Byung Jin Choi

Byung Jin 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).

  • Patent number: 8123514
    Abstract: The present invention includes a template for patterning liquids disposed on a substrate. The template includes a body having opposed first and second surfaces with one surface having at least one recess and the other surface having a patterning region. In one embodiment, the template may be mounted to a fluid chamber having an inlet and a throughway. The template may be connected to the throughway and the inlet is connected to a fluid source.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: February 28, 2012
    Assignee: Molecular Imprints, Inc.
    Inventors: Sidlgata V. Sreenivasan, Byung-Jin Choi, Ronald D. Voisin
  • Patent number: 8109753
    Abstract: A nano-imprint lithography system is described for patterning first and second substrates, the system includes a translation stage constructed to alternatively place substrate chucks in position with respect to a nano-imprint mold assembly such that the nano-imprint mold assembly may imprint a pattern on one of the substrates, while concurrently obtaining a desired spatial relationship for the remaining substrate.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: February 7, 2012
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan
  • Patent number: 8109754
    Abstract: A system of patterning first and second opposed sides of a substrate is described. The system may employ a mold assembly and obtaining a desired spatial relationship between the first and second opposed sides of the substrate and the mold assembly. In a further embodiment, the method and system may employ a first and a second mold assembly.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: February 7, 2012
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan
  • Patent number: 8057725
    Abstract: The present invention provides a method for patterning a substrate with a template having a mold that features positioning conformable material between the substrate and the mold and filling a volume defined between the mold and the substrate with the conformable material through capillary action between the conformable material and one of the mold and the substrate. Thereafter, the conformable material is solidified. Specifically, the distance between the mold and the substrate is controlled to a sufficient degree to attenuate, if not avoid, compressive forces between the mold and the substrate. As a result, upon initial contact of the mold with the conformable material, capillary filling of the volume between the mold and the substrate occurs.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 15, 2011
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan
  • Publication number: 20110260361
    Abstract: Control of lateral strain and lateral strain ratio (dt/db) between template and substrate through the selection of template and/or substrate thicknesses (Tt and/or Tb), control of template and/or substrate back pressure (Pt and/or Pb), and/or selection of material stiffness are described.
    Type: Application
    Filed: April 27, 2011
    Publication date: October 27, 2011
    Applicant: Molecular Imprints, Inc.
    Inventors: Se-Hyuk Im, Mahadevan GanapathiSubramanian, Edward Brian Fletcher, Niyaz Khusnatdinov, Gerard M. Schmid, Mario Johannes Meissl, Anshuman Cherala, Frank Y. Xu, Byung-Jin Choi, Sidlgata V. Sreenivasan
  • Patent number: 8044919
    Abstract: An inverter of a liquid crystal display for receiving a power voltage for burst dimming via one power terminal to simultaneously adjust a burst dimming and an analog dimming is disclosed. In the inverter of the liquid crystal display, a burst dimming signal generator receives a triangular-wave signal and a power voltage for burst dimming to generate a burst dimming signal. An analog dimming voltage generator receives the power voltage for burst dimming to generate an analog dimming voltage. And a main controller receives the burst dimming signal and the analog dimming voltage to generate a pulse width modulating signal which is used for generating a driving current of a backlight assembly.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: October 25, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Byung Jin Choi
  • Patent number: 8033813
    Abstract: The present invention is directed towards a chucking system to hold a substrate, said system including, inter alia, a chuck body having first and second opposed sides, said first side including an array of fluid chambers arranged in rows and columns, said fluid chambers each comprising first and second spaced-apart recesses defining first and second spaced-apart support regions, with said first support region cincturing said second support region and said first and second recesses, and said second support region cincturing said second recess, with said substrate resting against said first and second support regions, with said first recess and a portion of said substrate in superimposition therewith defining a first chamber and said second recess and a portion of said substrate in superimposition therewith defining a second chamber, with each column of said first chambers and each row of said second chambers being in fluid communication with a differing source of fluid to control a flow of fluid in said array
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: October 11, 2011
    Assignee: Molecular Imprints, Inc.
    Inventors: Anshuman Cherala, Byung-Jin Choi, Pankaj B. Lad, Steven C. Shackleton
  • Patent number: 8033814
    Abstract: An imprint lithography template may be used to form an imprinted layer in a light curable liquid disposed on a substrate. During use, the template may be disposed within a template holder. The template holder may include a body with an opening configured to receive the template, a support plate, and an actuator system coupled to the body. The actuator system may be configured to alter a physical dimension of the template during use.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: October 11, 2011
    Assignee: Board of Regents, The University of Texas System
    Inventors: Todd C. Bailey, Byung-Jin Choi, Matthew E. Colburn, Sidlgata V. Sreenivasan, Carlton Grant Willson, John G. Ekerdt
  • Patent number: 8033815
    Abstract: Chucking mechanisms may include a plurality of chucking sections respectively connecting to a pressure control device to generate individual chucking forces. The individual chucking forces of the chucking sections may be varied by the pressure control device such that a magnitude of separation force is reduced for an imprint lithography system.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: October 11, 2011
    Assignee: Molecular Imprints, Inc.
    Inventors: Daniel A. Babbs, Byung-Jin Choi, Anshuman Cherala
  • Patent number: 8012395
    Abstract: Imprint lithography substrates may include alignment marks formed of high contrast material. Exemplary methods for forming alignment marks having high contrast material are described.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: September 6, 2011
    Assignee: Molecular Imprints, Inc.
    Inventors: Kosta S. Selinidis, Byung-Jin Choi, Gerard M. Schmid, Ecron D. Thompson, Ian Matthew McMackin
  • Publication number: 20110212263
    Abstract: Edge field patterning of a substrate having full fields and partial fields may include patterning using a template having multiple mesas with each mesa corresponding to a field on the substrate. Polymerizable material may be deposited solely between the template and the full fields of the substrate. A non-reactive material may be deposited between the template and partial fields of the substrate.
    Type: Application
    Filed: May 2, 2011
    Publication date: September 1, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Sidlgata V. Sreenivasan, Byung-Jin Choi
  • Publication number: 20110193251
    Abstract: Gas confinement systems and methods are described. In particular, systems and methods are described that include a barrier that confines purging gas and restricts flow of purging gas to other elements within a nano-lithography system. The barrier can be adjusted to accommodate and/or control desired pressure variations between working and external environments.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 11, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Ankur Jain, Steven C. Shackleton, Byung-Jin Choi
  • Publication number: 20110183521
    Abstract: Polymerized material on a substrate may be removed by exposure to vacuum ultraviolet (VUV) radiation from an energy source within a gaseous atmosphere of a controlled composition. Following such removal, additional etching techniques are also described for nano-imprinting.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 28, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Gerard M. Schmid, Michael N. Miller, Byung-Jin Choi, Douglas J. Resnick, Sidlgata V. Sreenivasan, Frank Y. Xu, Darren D. Donaldson
  • Publication number: 20110180964
    Abstract: Templates for patterning large area substrates are provided. Generally, templates include a body and a plurality of molds positioned on the body. Each mold has a first length and each mold may be separated by an open space having a distance therebetween. The length of the mold may be substantially similar to the distance between the open space or the length of the mold may be substantially greater than the distance between the open space. Additionally, purging techniques that incorporate features of the template are described.
    Type: Application
    Filed: January 10, 2011
    Publication date: July 28, 2011
    Applicant: MOLECULAR IMPRINTS. INC.
    Inventor: Byung-Jin Choi
  • Publication number: 20110183070
    Abstract: Droplets of polymerizable material may be patterned on a film sheet using a roll-to-roll system. The droplets of polymerizable material may be dispensed on the film sheet such that a substantially continuous patterned layer may be formed on the film sheet. A contact system provides for smooth fluid front progression the polymerizable material during imprinting. A gas purging system may be positioned during imprinting. Gas purging systems may provide for purging in parallel as fluid front of polymerizable material moves through roll-to-roll system.
    Type: Application
    Filed: January 27, 2011
    Publication date: July 28, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventor: Byung-Jin Choi
  • Patent number: 7980715
    Abstract: Disclosed are a backlight unit capable of determining a deviated degree of a lamp grip by a guide line formed adjacent to the lamp grip a PCB that connects an electrode thereof with a lamp electrode, and a manufacturing method for the same.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 19, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hong Sung Song, Byung Jin Choi
  • Publication number: 20110171340
    Abstract: A nanoimprint lithography template including, inter alia, a body having first and second opposed sides with a first surface disposed on the first side, the second side having a recess disposed therein, the body having first and second regions with the second region surrounding the first region and the recess in superimposition with the first region, with a portion of the first surface in superimposition with the first region being spaced-apart from the second side a first distance and a portion of the first surface in superimposition with the second region being spaced-apart from the second side a second distance, with the second distance being greater than the first distance; and a mold disposed on the first side of the body in superimposition a portion of the first region.
    Type: Application
    Filed: March 28, 2011
    Publication date: July 14, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Douglas J. Resnick, Mario J. Meissl, Byung-Jin Choi, Sidlgata V. Sreenivasan
  • Publication number: 20110169797
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a plurality of data lines to which a data voltage is supplied, a plurality of gate lines to which a gate pulse is supplied, and a plurality of liquid crystal cells, a data drive circuit to invert a polarity of the data voltage in response to a polarity control signal and to output the data voltage to the data lines in response to a source output enable signal, a gate drive circuit to supply the gate pulse to the gate lines, and a POL/SOE logic circuit to invert the polarity control signal for every frame period except at Nth-multiple frame period (where N is a positive integer), wherein the POL/SOE logic circuit controls the polarity control signal at every Nth-multiple frame period such that the polarity of the data voltage is the same as the previous frame period and controls a pulse width of the source output enable signal at every Nth-multiple frame period to be longer than for the other frame periods.
    Type: Application
    Filed: March 18, 2011
    Publication date: July 14, 2011
    Inventors: Hong Sung Song, Woong Ki Min, Byung Jin Choi, Dong II Kim, Su Hyuk Jang
  • Publication number: 20110140304
    Abstract: Nano imprint lithography templates for purging of fluid during nano imprint lithography processes are described. The templates may include an inner channel and an outer channel. The inner channel constructed to provide fluid communication with a process gas supply to a region between the template and a substrate during the nano imprint lithography process. The outer channel constructed to evacuate fluid and/or confine fluid between the active area of template and the substrate.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 16, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Byung-Jin Choi, Yeong-jun Choi, Kosta S. Selinidis, Steven C. Shackleton
  • Publication number: 20110140302
    Abstract: The present invention provides a method for patterning a substrate with a template having a mold that features positioning conformable material between the substrate and the mold and filling a volume defined between the mold and the substrate with the conformable material through capillary action between the conformable material and one of the mold and the substrate. Thereafter, the conformable material is solidified. Specifically, the distance between the mold and the substrate is controlled to a sufficient degree to attenuate, if not avoid, compressive forces between the mold and the substrate. As a result, upon initial contact of the mold with the conformable material, capillary filling of the volume between the mold and the substrate occurs.
    Type: Application
    Filed: February 16, 2011
    Publication date: June 16, 2011
    Applicant: MOLECULAR IMPRINTS, INC.
    Inventors: Byung-Jin Choi, Sidlgata V. Sreenivasan