Patents by Inventor Hyelim Jang

Hyelim 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: 20210173136
    Abstract: A display device includes: a light source configured to generate a light; a display panel configured to display images using the light; a light guide having at least one surface adjacent the light source; and an optical member between the light guide member and the display panel. The optical member includes: a low refractive index layer on a light exit surface of the light guide member; a first cover layer on the low refractive index layer; and a light conversion layer on the first cover layer and configured to convert a wavelength band of an incident light.
    Type: Application
    Filed: February 17, 2021
    Publication date: June 10, 2021
    Inventors: Younggu KIM, Taekjoon LEE, Sunyoung CHANG, Jinsoo JUNG, Jongmin OK, Hyelim JANG, Baekkyun JEON, Kyungseon TAK
  • Publication number: 20210103192
    Abstract: A display device includes a base layer, a first pixel transistor, a first gate line, a first data line electrically connected to the first pixel transistor, a first pixel electrode electrically connected to the first pixel transistor and overlapping the first data line in a plan view, and a porous layer. The porous layer is disposed between the first data line and the first pixel electrode and includes a matrix including a polymer resin and a plurality of void portions defined in the matrix. The display device is capable of displaying a sharp image because the porous layer alleviates or prevents a crosstalk between the first data line and the first pixel electrode.
    Type: Application
    Filed: September 15, 2020
    Publication date: April 8, 2021
    Inventors: Hyelim JANG, YOUNG GU KIM, Jiyun PARK, JONGHO SON, Jongmin OK, Sun-Young CHANG, BAEKKYUN JEON, Kyungseon TAK
  • Publication number: 20210098741
    Abstract: A display device including a light emitting element layer, an encapsulation layer disposed on the light emitting element layer, wherein the encapsulation layer includes a hollow polymer structure, and an input sensor disposed on the encapsulation layer.
    Type: Application
    Filed: June 4, 2020
    Publication date: April 1, 2021
    Inventors: Jiyun PARK, YOUNG GU KIM, Jongmin OK, Sun-Young CHANG, Hyelim JANG, Kyungseon TAK, BAEKKYUN JEON
  • Patent number: 10948649
    Abstract: A display device includes: a light source configured to generate a light; a display panel configured to display images using the light; a light guide having at least one surface adjacent the light source; and an optical member between the light guide member and the display panel. The optical member includes: a low refractive index layer on a light exit surface of the light guide member; a first cover layer on the low refractive index layer; and a light conversion layer on the first cover layer and configured to convert a wavelength band of an incident light.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 16, 2021
    Assignee: Samsung Display Co., Lid.
    Inventors: Younggu Kim, Taekjoon Lee, Sunyoung Chang, Jinsoo Jung, Jongmin Ok, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Publication number: 20210055601
    Abstract: A display device includes a display panel from which light is emitted; and an optical film to which the light from the display panel is incident. The optical film includes: a first pattern layer having a first refractive index, and a second pattern layer having a second refractive index lower than the first refractive index, the second pattern layer including a plurality of hollow inorganic particles. The second pattern layer which has the second refractive index lower than the first refractive index and includes the plurality of hollow inorganic particles, is disposed further from the display panel than the first pattern layer.
    Type: Application
    Filed: May 22, 2020
    Publication date: February 25, 2021
    Inventors: YOUNG GU KIM, Jiyun PARK, JONGHO SON, Jongmin OK, Sun-Young CHANG, Hyelim JANG, BAEKKYUN JEON, Kyungseon TAK
  • Publication number: 20210028395
    Abstract: A display apparatus includes a substrate comprising a display area and a non-display area. A light-emitting device is on the display area. A thin-film encapsulation layer is on the light-emitting device. The thin-film encapsulation layer includes at least one inorganic encapsulation layer and at least one organic encapsulation layer. The organic encapsulation layer includes a plurality of organic particles having a core-shell structure that includes a hollow core and a shell surrounding the hollow core. A touch unit is on the thin-film encapsulation layer.
    Type: Application
    Filed: April 24, 2020
    Publication date: January 28, 2021
    Inventors: Younggu KIM, Jiyun PARK, Jongmin OK, Byoungduk LEE, Taekjoon LEE, Sunyoung CHANG, Hyelim JANG, Baekkyun JEON, Jinsoo JUNG, Kyungseon TAK, Jaeheung HA
  • Publication number: 20210018792
    Abstract: An optical film may include a first pattern layer having a first refractive index and including a base portion and a plurality of protrusions on the base portion x, and a second pattern layer disposed on the first pattern layer and having a second refractive index different from the first refractive index. Each of the protrusions may include n sub-protrusions (n is an integer of 2 or greater), which are stacked in a thickness direction of the base portion. Each of the n sub-protrusions may have a quadrilateral shape. A side surface of the protrusion defined by the n sub-protrusions may include at least one step portion. The optical film improves display quality of a display device in front and lateral directions.
    Type: Application
    Filed: June 8, 2020
    Publication date: January 21, 2021
    Inventors: Jongmin Ok, Young Gu Kim, Jiyun Park, Jongho Son, Sun-Young Chang, Hyelim Jang, Baekkyun Jeon, Kyungseon Tak
  • Publication number: 20200379292
    Abstract: An optical film includes a first pattern layer including a first base portion and first protruding portions disposed on the first base portion to be spaced apart from each other and having a first refractive index and a second pattern layer disposed on the first pattern layer and having a second refractive index. Each of the first protruding portions includes a first sub-protruding portion having a first width in a cross-section perpendicular to the first base portion, a second sub-protruding portion disposed between the first base portion and the first sub-protruding portion and having a width that increases from the first sub-protruding portion to the first base portion, and a third sub-protruding portion disposed on the first sub-protruding portion and having a width that decreases as a distance from the first sub-protruding portion increases.
    Type: Application
    Filed: March 11, 2020
    Publication date: December 3, 2020
    Inventors: Kyungseon TAK, Young Gu KIM, Jiyun PARK, Jongho SON, Jongmin OK, Sun-Young CHANG, Hyelim JANG, Baekkyun JEON
  • Publication number: 20200379300
    Abstract: Provided is a display device. The display device includes a liquid crystal display panel and an optical film disposed above the liquid crystal display panel, the optical film comprising a first pattern layer having a first refractive index and a second pattern layer having a second refractive index different from the first refractive index and disposed on the first pattern layer. The first pattern layer includes a first base part and a plurality of first protrusions. Each of the first protrusions includes a bottom surface adjacent to the first base part, an upper surface facing the bottom surface, and side surfaces between the bottom surface and the upper surface. Each of the side surfaces is perpendicular to the bottom surface and the upper surface.
    Type: Application
    Filed: March 18, 2020
    Publication date: December 3, 2020
    Applicant: Samsung Display Co., LTD.
    Inventors: Jongho SON, Young Gu KIM, Jiyun PARK, Jongmin OK, Sun-Young CHANG, Hyelim JANG, Baekkyun JEON, Kyungseon TAK
  • Patent number: 10768498
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: September 8, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Joon Rho, Kyungmin Kim, Jin-Lak Kim, Hyelim Jang
  • Publication number: 20200142119
    Abstract: A display device includes: a light source configured to generate a light; a display panel configured to display images using the light; a light guide having at least one surface adjacent the light source; and an optical member between the light guide member and the display panel. The optical member includes: a low refractive index layer on a light exit surface of the light guide member; a first cover layer on the low refractive index layer; and a light conversion layer on the first cover layer and configured to convert a wavelength band of an incident light.
    Type: Application
    Filed: September 27, 2019
    Publication date: May 7, 2020
    Inventors: Younggu KIM, Taekjoon LEE, Sunyoung CHANG, Jinsoo JUNG, Jongmin OK, Hyelim JANG, Baekkyun JEON, Kyungseon TAK
  • Publication number: 20200081173
    Abstract: An electronic device includes a light source member configured to provide a first light, a color conversion member disposed on the light source member and including a first conversion material that converts the first light into a second light and a second conversion material that converts the first light into a third light, and a low-refractive index layer disposed on the light source member and disposed on at least one of upper and lower portions of the color conversion member. The low-refractive index layer includes a matrix part, a plurality of hollow inorganic particles dispersed in the matrix part, and a plurality of void parts defined by the matrix part.
    Type: Application
    Filed: June 5, 2019
    Publication date: March 12, 2020
    Inventors: Kyungseon Tak, Younggu Kim, Taekjoon Lee, Sun-young Chang, Jin-soo Jung, Jongmin Ok, Hyelim Jang, Baekkyun Jeon
  • Publication number: 20200073169
    Abstract: Provided is an optical member. The optical member includes a color filter member including quantum dots and a low-refractive index layer below the color filter member and including a first hollow particle and a second hollow particle. The first hollow particle may have a particle size different from a particle size of the second hollow particle.
    Type: Application
    Filed: June 12, 2019
    Publication date: March 5, 2020
    Inventors: Jin-soo JUNG, Younggu KIM, Taekjoon LEE, Jongmin OK, Sun-young CHANG, Hyelim JANG, Baekkyun JEON, Kyungseon TAK
  • Publication number: 20200041709
    Abstract: A low refractive layer includes a plurality of hollow inorganic particles and a matrix between the hollow inorganic particles, and capable of exhibiting a good refractive index and improved durability by enhancing the weight ratio of the hollow inorganic particles to the matrix. An electronic device according to an embodiment of the inventive concept including the low refractive layer may exhibit improved reliability and good display quality.
    Type: Application
    Filed: July 1, 2019
    Publication date: February 6, 2020
    Inventors: Taekjoon LEE, Young gu KIM, Sun-young CHANG, Jongmin OK, Hyelim JANG, Jin-soo JUNG, Kyungseon TAK
  • Patent number: 10053625
    Abstract: A display device includes a first substrate, a second substrate, and a liquid crystal layer. The second substrate faces the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having negative dielectric constant anisotropy and an additive. The additive may be 2,6-di-tert-butyl phenol in which at least one position of a 3-position, 4-position and 5-position is substituted with a substituent.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyelim Jang
  • Publication number: 20170235166
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Inventors: Soon Joon RHO, Kyungmin KIM, Jin-Lak KIM, Hyelim JANG
  • Patent number: 9658507
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: May 23, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Joon Rho, Kyungmin Kim, Jin-Lak Kim, Hyelim Jang
  • Publication number: 20170010495
    Abstract: A method for forming a display device includes forming a liquid crystal layer between a first substrate and a second substrate spaced apart from the first substrate, in which the liquid crystal layer includes a liquid crystal composition including a reactive mesogen, applying an electric field to the liquid crystal layer, firstly curing the liquid crystal layer at a temperature from about ?20° C. to about 60° C., and secondly curing the liquid crystal layer without applying the electric field. The liquid crystal composition includes the reactive mesogen in an amount exceeding 0 percent by weight and equal to or smaller than about 30 percent by weight relative to a total weight of the liquid crystal composition.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Applicant: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY
    Inventors: SOON JOON RHO, HYUNGGUEN YOON, HYELIM JANG, HYEOKJIN LEE, JUNG WOOK KIM, DONG HAN SONG, TAE HOON YOON
  • Publication number: 20160289563
    Abstract: A display device includes a first substrate, a second substrate, and a liquid crystal layer. The second substrate faces the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having negative dielectric constant anisotropy and an additive. The additive may be 2,6-di-tert-butyl phenol in which at least one position of a 3-position, 4-position and 5-position is substituted with a substituent.
    Type: Application
    Filed: November 4, 2015
    Publication date: October 6, 2016
    Inventor: Hyelim JANG
  • Patent number: 9291856
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate that faces the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules that have negative dielectric anisotropy and a nematic-isotropic phase transition temperature (Tni) of about 110° C. or more.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: March 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Joon Rho, Kyungmin Kim, Jin-Lak Kim, Joon-Hyung Park, Hyelim Jang, Kyungseon Tak