Patents by Inventor Ji Eun Jang

Ji Eun Jang 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: 20210005672
    Abstract: A color conversion substrate and a display device are provided. The color conversion substrate includes a base substrate, a first color filter and a second color filter disposed on a surface of the base substrate, a first partition layer disposed between the first color filter and the second color filter, a second partition layer disposed on the first partition layer, a first wavelength conversion pattern disposed on the first color filter and a second wavelength conversion pattern disposed on the second color filter, wherein the first partition layer includes a first lower surface disposed on the first color filter and a second lower surface disposed on the second color filter.
    Type: Application
    Filed: June 11, 2020
    Publication date: January 7, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Gak Seok LEE, Byung Chul KIM, In Ok KIM, Jae Min SEONG, In Seok SONG, Keun Chan OH, Ji Eun JANG, Chang Soon JANG, Sun Kyu JOO, Ha Lim JI
  • Publication number: 20200258945
    Abstract: A color conversion substrate includes a base on which first to third light outputting regions and a light shielding region surrounding the first to third light outputting regions are defined; first to third color filters on the base in the first to third light outputting regions, respectively; a first light shielding member on the first color filter in the light shielding region; a light transmission pattern on the first color filter; a first wavelength conversion pattern on the second color filter and which converts light of a first color into light of a second color; and a second wavelength conversion pattern on the third color filter and which converts the light of the first color into light of a third color. A first opening located in the light shielding region is defined in at least one of the light transmission pattern and the first and second wavelength conversion patterns.
    Type: Application
    Filed: October 3, 2019
    Publication date: August 13, 2020
    Inventors: Sun Kyu JOO, Byung Chul KIM, In Ok KIM, Jae Min SEONG, In Seok SONG, Keun Chan OH, Gak Seok LEE, Ji Eun JANG, Chang Soon JANG
  • Patent number: 10723949
    Abstract: Disclosed is a liquid crystal composition including at least one compound selected from the group consisting of a liquid crystal compound expressed by Formula 1-1 and a liquid crystal compound expressed by Formula 1-2; at least one compound selected from the group consisting of a self-alignment compound expressed by Formula 2-1 and a self-alignment compound expressed by Formula 2-2; and at least one compound selected from the group consisting of a reactive mesogen expressed by Formula 3-1, a reactive mesogen expressed by Formula 3-2, a reactive mesogen expressed by Formula 3-3, a reactive mesogen expressed by Formula 3-4, and a reactive mesogen expressed by Formula 3-5. The liquid crystal composition also has negative dielectric anisotropy.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: July 28, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun Young Kwon, Min-Hee Kim, Ji Eun Jang, Il Joon Kang, Jong Ho Son, Keun Chan Oh, Chang-Hun Lee
  • Publication number: 20200233832
    Abstract: An apparatus includes a first device having a clock signal and configured to communicate, via a data bus, with a second device configured to assert a data strobe signal and a plurality of data bit signals on the data bus. The first device may include a control circuit configured, during a training phase, to determine relative timing between the clock signal, the plurality of data bit signals, and the data strobe signal. The first device may determine, using a first set of sampling operations, a first timing relationship of the plurality of data bit signals relative to the data strobe signal, and determine, using a second set of sampling operations, a second timing relationship of the plurality of data bit signals and the data strobe signal relative to the clock signal. During an operational phase, the control circuit may be configured to use delays based on the first and second timing relationships to sample data from the second device on the data bus.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 23, 2020
    Inventors: Navaneeth P. Jamadagni, Ji Eun Jang, Anatoly Yakovlev, Vincent Lee, Guanghua Shu, Mark Semmelmeyer
  • Patent number: 10647918
    Abstract: A liquid crystal composition includes: at least one liquid crystal compound selected from the group consisting of Chemical Formulas 1-1 to 1-8; at least one self-aligned compound selected from the group consisting of Chemical Formulas 2-1 and 2-2; and at least one reactive mesogen selected from the group consisting of Chemical Formulas 3-1 to 3-5. Compositions and devices constructed therewith are capable of ameliorating liquid crystal drip spots that typically occur in a manufacturing process. In addition, the display devices using the composition do not require an additional alignment layer, which simplifies manufacturing.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Eun Jang, Sun Young Kwon, Min-Hee Kim, Jong Ho Son, Keun Chan Oh, Chang-Hun Lee
  • Patent number: 10507878
    Abstract: The present disclosure provides a vehicle body transfer system using a transfer unit. The system may include a base configured to move along a base rail; a moving unit comprising a supporting part that is configured to support a vehicle body, wherein the moving unit is configured to move the supporting part in a predetermined direction and the moving part is disposed on the base; and a tool unit disposed outside the base rail and selectively engaged to the moving unit, wherein the tool unit is configured to provide a driving torque such that the moving unit controls a position of the supporting part.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: December 17, 2019
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventors: Hyunwoo Lee, Ji Eun Jang, Yoon Jang
  • Patent number: 10489537
    Abstract: Disclosed is a method of simulating a switching electrical circuit, including one or more reactive elements and one or more switches. The method includes receiving an electrical circuit including one or more reactive elements and one or more switches and a stimulus expressed in a form of a linear combination of one or more basis functions; calculating a response of the electrical circuit before the switching in a form of a linear combination of one or more basis functions, using an s-domain transfer function of the electrical circuit before the switching, initial values of the reactive elements before the switching, and the stimulus expressed in a form of a linear combination of one or more basis functions; and calculating a response of the electrical circuit after the switching in a form of a linear combination of one or more basis functions, using an s-domain transfer function of the electrical circuit after the switching and initial values of the reactive elements after the switching.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 26, 2019
    Assignee: SNU R&DB FOUNDATION
    Inventors: Ji Eun Jang, Jae Ha Kim
  • Patent number: 10473982
    Abstract: A liquid crystal display including a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes a liquid crystal composition. The liquid crystal composition includes at least one of liquid crystal compounds including a cyclopentadienyl group.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sun Young Kwon, Tae Hoon Kim, Ji Hong Bae, Jong Ho Son, Keun Chan Oh, Gak Seok Lee, Chang Hun Lee, Ji Eun Jang
  • Patent number: 10274786
    Abstract: A liquid crystal display device comprises: a first substrate; an organic layer disposed on the first substrate; a pixel electrode disposed on the organic layer; a plurality of slits defined in the pixel electrode and configured to exposed a surface of the organic layer; a liquid crystal alignment film disposed on a surface of the pixel electrode and on the surface of the organic layer exposed by the plurality of slits; and a plurality of liquid crystal molecules disposed on the liquid crystal alignment film, wherein the liquid crystal alignment film includes a first region overlapping the plurality of slits and a second region overlapping the pixel electrode, wherein the second region has a surface energy different from a surface energy of the first region.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: April 30, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Ho Son, Sun Young Kwon, Tae Hoon Kim, Kyung Hae Park, Joon Hyung Park, Ji Hong Bae, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee, Ji Eun Jang, Hye Lim Jang
  • Publication number: 20190119572
    Abstract: Disclosed is a liquid crystal composition including at least one compound selected from the group consisting of a liquid crystal compound expressed by Formula 1-1 and a liquid crystal compound expressed by Formula 1-2; at least one compound selected from the group consisting of a self-alignment compound expressed by Formula 2-1 and a self-alignment compound expressed by Formula 2-2; and at least one compound selected from the group consisting of a reactive mesogen expressed by Formula 3-1, a reactive mesogen expressed by Formula 3-2, a reactive mesogen expressed by Formula 3-3, a reactive mesogen expressed by Formula 3-4, and a reactive mesogen expressed by Formula 3-5. The liquid crystal composition also has negative dielectric anisotropy.
    Type: Application
    Filed: October 22, 2018
    Publication date: April 25, 2019
    Inventors: Sun Young Kwon, Min-Hee Kim, Ji Eun Jang, Il Joon Kang, Jong Ho Son, Keun Chan Oh, Chang-Hun Lee
  • Publication number: 20190115308
    Abstract: Distributions of on-chip inductors for monolithic voltage regulation are described. On-chip voltage regulation may be provided by integrated voltage regulators (IVRs), such as a buck converter with integrated inductors. On-chip inductors may be placed to ensure optimal voltage regulation for high power density applications. With this technology, integrated circuits may have many independent voltage domains for fine-grained dynamic voltage and frequency scaling that allows for higher overall power efficiency for the system.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 18, 2019
    Inventors: Michael Henry Soltau Dayringer, Anatoly Yakovlev, Ji Eun Jang, Hesam Fathi Moghadam, David Hopkins
  • Publication number: 20190085242
    Abstract: A liquid crystal composition includes: at least one liquid crystal compound selected from the group consisting of Chemical Formulas 1-1 to 1-8; at least one self-aligned compound selected from the group consisting of Chemical Formulas 2-1 and 2-2; and at least one reactive mesogen selected from the group consisting of Chemical Formulas 3-1 to 3-5. Compositions and devices constructed therewith are capable of ameliorating liquid crystal drip spots that typically occur in a manufacturing process. In addition, the display devices using the composition do not require an additional alignment layer, which simplifies manufacturing.
    Type: Application
    Filed: August 23, 2018
    Publication date: March 21, 2019
    Inventors: Ji Eun JANG, Sun Young KWON, Min-Hee KIM, Jong Ho SON, Keun Chan OH, Chang-Hun LEE
  • Patent number: 10119074
    Abstract: A liquid crystal composition includes a compound having a structure represented by formula A-1: wherein RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom, or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH?CH—*, *—CF?CF—*, *—CH?CF—*, *—CF?CH—*, *—C?C—*, *—CH?CHCH2O—*, or a single bond, X is a halogen atom, each of l1 and l2 is independently an integer of 0 to 2, and when l1 is 2 and ZA in a repeating unit defined by l1 are the same or different, wherein k is an integer of 1 to 5 and “*” indicates a point of attachment.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Eun Jang, Sun Young Kwon, Tae Hoon Kim, Jong Ho Son, Keun Chan Oh, Won Gap Yoon, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee
  • Patent number: 10056051
    Abstract: A display apparatus includes a gamma controller configured to determine whether the target pixel unit is driven in both time division method and space division method based on a plurality of comparison values and a reference condition, and an output controller configured to generate normal gamma-data of the target pixel unit using a normal gamma curve if the plurality of comparison values satisfy the reference condition and to generate high gamma-data and low gamma-data of the target pixel unit using a high gamma curve and a low gamma curve in both time division method and space division method if the plurality of comparison values do not satisfy the reference condition.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: August 21, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Eun Jang, Go-Eun Cha, Ji-Hye Choi, Hoi-Sik Moon, Jae-Seok Choi, Shim-Ho Yi, Jong-Hee Na, Woo-Young Lee, Woo-Jin Jung, Kang-Hyun Kim, Jun-Il Park, Jung-Suk Han, Jae-Seob Chung
  • Patent number: 10007132
    Abstract: Provided are a display panel and a thin film transistor array substrate. According to one or more exemplary embodiments, a display panel includes: a first substrate including a pixel area and a non-pixel area; a second substrate that faces the first substrate; and a crack guide groove disposed on a surface of at least one of the first substrate and the second substrate.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 26, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Gap Yoon, Ji Eun Jang, Kyung Seon Tak, Keun Chan Oh
  • Publication number: 20180171230
    Abstract: A liquid crystal display includes a first base substrate, a second base substrate facing the first base substrate, and an electrode unit disposed on at least one of the first base substrate and the second base substrate. A liquid crystal layer is positioned between the first base substrate and the second base substrate and includes a liquid crystal composition. The liquid crystal composition includes at least one of a liquid crystal compound represented by Chemical Formula 1, at least one of a liquid crystal compound represented by Chemical Formula 2-A, and at least one of a liquid crystal compound represented by Chemical Formula 2-B.
    Type: Application
    Filed: July 12, 2017
    Publication date: June 21, 2018
    Inventors: SUN YOUNG KWON, JI EUN JANG, JONG HO SON, KEUN CHAN OH, CHANG HUN LEE
  • Patent number: 9984641
    Abstract: A gate protection circuit includes: a clock signal generator to generate a plurality of gate clock signals; a gate driver to output gate signals based on the plurality of gate clock signals, the gate driver including a plurality of gate driving circuits cascaded to each other; and a monitoring line configured to transmit a feedback signal based on the plurality of gate clock signals via the plurality of gate driving circuits to the clock signal generator. The clock signal generator is to block generation of the plurality of gate clock signals in response to the feedback signal.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: May 29, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung In Kang, Kyun Ho Kim, Min Ho Park, Ji Eun Jang
  • Publication number: 20180086981
    Abstract: A liquid crystal composition includes a compound having a structure represented by formula A-1: wherein RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom, or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH?CH—*, *—CF?CF—*, *—CH?CF—*, *—CF?CH—*, *—C?C—*, *—CH?CHCH2O—*, or a single bond, X is a halogen atom, each of l1 and l2 is independently an integer of 0 to 2, and when l1 is 2 and ZA in a repeating unit defined by l1 are the same or different, wherein k is an integer of 1 to 5 and “*” indicates a point of attachment.
    Type: Application
    Filed: February 1, 2017
    Publication date: March 29, 2018
    Inventors: Ji Eun JANG, Sun Young KWON, Tae Hoon KIM, Jong Ho SON, Keun Chan OH, Won Gap YOON, Gak Seok LEE, Jin Hyeong LEE, Chang Hun LEE
  • Publication number: 20180046032
    Abstract: A liquid crystal display including a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes a liquid crystal composition. The liquid crystal composition includes at least one of liquid crystal compounds including a cyclopentadienyl group.
    Type: Application
    Filed: April 14, 2017
    Publication date: February 15, 2018
    Inventors: SUN YOUNG KWON, Tae Hoon Kim, Ji Hong Bae, Jong Ho Son, Keun Chan Oh, Gak Seok Lee, Chang Hun Lee, Ji Eun Jang
  • Publication number: 20170357130
    Abstract: A liquid crystal display device comprises: a first substrate; an organic layer disposed on the first substrate; a pixel electrode disposed on the organic layer; a plurality of slits defined in the pixel electrode and configured to exposed a surface of the organic layer; a liquid crystal alignment film disposed on a surface of the pixel electrode and on the surface of the organic layer exposed by the plurality of slits; and a plurality of liquid crystal molecules disposed on the liquid crystal alignment film, wherein the liquid crystal alignment film includes a first region overlapping the plurality of slits and a second region overlapping the pixel electrode, wherein the second region has a surface energy different from a surface energy of the first region.
    Type: Application
    Filed: April 11, 2017
    Publication date: December 14, 2017
    Inventors: Jong Ho SON, Sun Young KWON, Tae Hoon KIM, Kyung Hae PARK, Joon Hyung PARK, Ji Hong BAE, Gak Seok LEE, Jin Hyeong LEE, Chang Hun LEE, Ji Eun JANG, Hye Lim JANG