Patents by Inventor Ji-Yun Jang

Ji-Yun 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: 20240180043
    Abstract: Disclosed is a heterojunction semiconductor flexible substrate in which an epitaxial oxide thin film layer is hetero-bonded to a thinned silicon substrate using a metal layer, a manufacturing method thereof, and the heterojunction semiconductor flexible substrate can be applied to sensor, actuator, transducer, or micro electro mechanical systems (MEMS) device using high functionality of the epitaxial oxide thin film layer of high quality as well as an electronic and/or optical device.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 30, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seung Hyub BAEK, Min Seok KIM, Ji-Soo JANG, Sunghoon HUR, Jungho YOON, Hyun-Cheol SONG, Seong Keun KIM, Ji-Won CHOI, Jin Sang KIM, Chong Yun KANG
  • Publication number: 20240180041
    Abstract: The present invention relates to a heterojunction semiconductor substrate having excellent dielectric properties, a method of manufacturing the same, and an electronic device using the same. The present invention provides a heterojunction semiconductor substrate with improved interlayer adhesion, low leakage current, and excellent dielectric properties that maintain strength in a ferroelectric fatigue experiment by interposing a metal layer and a conductive metal oxide layer on a semiconductor substrate to form an epitaxial oxide thin film layer composed of perovskite piezoelectric oxide. The heterojunction semiconductor substrate can be applied to sensors, actuators, transducers, or MEMS devices that use the high functionality of the high-quality epitaxial oxide thin film layer, including applications in electronic and optical devices.
    Type: Application
    Filed: November 29, 2023
    Publication date: May 30, 2024
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seung Hyub BAEK, Soo Young JUNG, Sunghoon HUR, Ji-Soo JANG, Jungho YOON, Hyun-Cheol SONG, Seong Keun KIM, Chong Yun KANG, Ji-Won CHOI, Jin Sang KIM
  • Publication number: 20240179932
    Abstract: The present disclosure relates to an organic light emitting diode and an organic light emitting device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first blue emitting material layer including a first compound and a second compound and positioned between the first and second electrodes, wherein the first compound is represented by Formula 1, and the second compound is represented by Formula 3. According to an aspect of the present disclosure, it is allowed to provide an OLED and an organic light emitting device having high emitting efficiency and/or improved lifespan.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 30, 2024
    Applicants: LG DISPLAY CO., LTD., LT Materials Co.,Ltd
    Inventors: Ji-Seon JANG, Chi-Ho LEE, Suk-Young BAE, Han-Jin AHN, Jun-Yun KIM, Dae-Hyuk CHOI, Dong-Jun KIM, Yong-Woo KIM, Yong-Geun JUNG, Jin-Hwan SHIN, Seok-Hyeon YU
  • Publication number: 20240148871
    Abstract: The present invention relates to a hydrogel composition comprising a chloroplast, a chloroplast transit peptide, alginate, and a pancreatic cell, and can supply oxygen to a cell or a tissue and control carbon dioxide and exhibits excellent preventive or therapeutic effects on diseases such as diabetes, etc., and thus may be utilized in the tissue engineering field such as organ transplant.
    Type: Application
    Filed: March 18, 2022
    Publication date: May 9, 2024
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG
    Inventors: Dong Yun LEE, Seon Mi JANG, Chae Rim YOO, Ji Yun Kim
  • Patent number: 11974492
    Abstract: A display device includes a first region, a second region adjacent to a side of the first region, and a third region adjacent to another side of the first region; a display panel in the first region, the second region and the third region; a window on and overlapping the display panel; and a bonding member between the display panel and the window and in the first region, the second region and the third region. The bonding member includes a first bonding part having a first elastic modulus and in the first region, a second bonding part having a second elastic modulus and in the second region, and a third bonding part having a third elastic modulus and in the third region. The first elastic modulus is greater than each of the second elastic modulus and the third elastic modulus.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 30, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyoung Ah Lee, Min Gu Kim, Ji Soo Kim, Hyo Yul Yoon, Eui Yun Jang
  • Patent number: 11966119
    Abstract: An optical film for a display device, includes: a first refractive layer having an upper surface and a lower surface including first projections and second projections extending away from the lower surface in a first direction, the second projections having different heights than the first projections, the first projections having lateral sides with different angles of inclination that decrease in the first direction; and a second refractive layer disposed directly on the upper surface of the first refractive layer, the second refractive layer having a refractive index different from that of the first refractive layer.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: April 23, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye Lim Jang, Young Gu Kim, Ji Yun Park, Jong Ho Son, Jong Min Ok, Sun Young Chang, Baek Kyun Jeon, Kyung Seon Tak
  • Patent number: 11930684
    Abstract: Provided is a display device. The display device includes a first base portion, a second base portion facing the first base portion, a light emitting layer disposed on one surface of the first base portion and emitting first light, a first wavelength conversion pattern disposed on the light emitting layer and converting the first light into second light having a different wavelength from the first light, a first color filter overlapping the first wavelength conversion pattern on one surface of the second base portion and spaced apart from the first wavelength conversion pattern, and an air layer interposed between the first wavelength conversion pattern and the first color filter.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: March 12, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Soon Jang, Keun Chan Oh, Gak Seok Lee, Sang Hun Lee, So Yun Lee, Ji Eun Jang
  • Patent number: 11009634
    Abstract: The present disclosure provides a structural color filter comprising: a substrate; a metal layer disposed on the substrate; and semiconductor gratings disposed on the metal layer, wherein each of the semiconductor gratings is elongated in a first direction, wherein the semiconductor gratings are arranged to be spaced apart from each other in a second direction perpendicular to the first direction, wherein the semiconductor gratings have the same thickness, wherein the thickness is smaller than a wavelength of visible-light.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: May 18, 2021
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Hui Joon Park, Kyu Tae Lee, Ji Yun Jang
  • Patent number: 10310343
    Abstract: Disclosed is a display panel in which a black matrix is formed on an upper substrate, which is disposed so as to face a lower substrate, so as to delimit each pixel area, a plurality of light control partitions is provided in the pixel area of the upper substrate, a color filter is provided in the pixel area of the upper substrate, and an overcoat layer is provided over the entire surface of the upper substrate. The light control partitions are formed in the pixel area simultaneously with the formation of the black matrix, which enables the omission of an existing light control film. Thereby, a narrow viewing angle is realized without increasing the thickness or manufacturing cost of a product.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: June 4, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hoon-Sub Shin, Mi-Kyung Lee, Ji-Yun Jang, Jun-Sung Kong, Yong-Hee Han, Eun-Young Yun
  • Publication number: 20180203170
    Abstract: The present disclosure provides a structural color filter comprising: a substrate; a metal layer disposed on the substrate; and semiconductor gratings disposed on the metal layer, wherein each of the semiconductor gratings is elongated in a first direction, wherein the semiconductor gratings are arranged to be spaced apart from each other in a second direction perpendicular to the first direction, wherein the semiconductor gratings have the same thickness, wherein the thickness is smaller than a wavelength of visible-light.
    Type: Application
    Filed: January 17, 2018
    Publication date: July 19, 2018
    Applicant: Industry-Academic Cooperation Foundation of Ajou University
    Inventors: Hui Joon PARK, Kyu Tae LEE, Ji Yun JANG
  • Publication number: 20180149936
    Abstract: Disclosed is a display panel in which a black matrix is formed on an upper substrate, which is disposed so as to face a lower substrate, so as to delimit each pixel area, a plurality of light control partitions is provided in the pixel area of the upper substrate, a color filter is provided in the pixel area of the upper substrate, and an overcoat layer is provided over the entire surface of the upper substrate. The light control partitions are formed in the pixel area simultaneously with the formation of the black matrix, which enables the omission of an existing light control film. Thereby, a narrow viewing angle is realized without increasing the thickness or manufacturing cost of a product.
    Type: Application
    Filed: November 29, 2017
    Publication date: May 31, 2018
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hoon-Sub SHIN, Mi-Kyung LEE, Ji-Yun JANG, Jun-Sung KONG, Yong-Hee HAN, Eun-Young YUN
  • Patent number: 8350997
    Abstract: A Liquid Crystal Display (LCD) device includes: a panel on which images are implemented; a backlight device below the panel and providing light; and a polarizer including a linear-polarizing layer over the panel that linear-polarizes light from the backlight device and a circular-polarizing layer over the linear-polarizing layer that circular-polarizes the linear-polarized light.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: January 8, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Kyung Lee, Ji-Yun Jang
  • Publication number: 20090303421
    Abstract: A Liquid Crystal Display (LCD) device includes: a panel on which images are implemented; a backlight device below the panel and providing light; and a polarizer including a linear-polarizing layer over the panel that linear-polarizes light from the backlight device and a circular-polarizing layer over the linear-polarizing layer that circular-polarizes the linear-polarized light.
    Type: Application
    Filed: December 15, 2008
    Publication date: December 10, 2009
    Inventors: Mi-Kyung Lee, Ji-Yun Jang