Patents by Inventor Dae-Hwan JANG

Dae-Hwan 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: 20180059477
    Abstract: A wire grid pattern used as a wire grid polarizer included in a display device or a master substrate for fabricating the wire gird polarizer include a substrate; a cell area having a plurality of cells, each of the plurality of cells having a plurality of wires protruding from the substrate and arranged in a substantially parallel relationship at regular intervals; and a bezel area disposed along a periphery of the cell area. The cell area includes a trench area separating at least some of the cells. A method for fabricating the wire grid pattern also is disclosed.
    Type: Application
    Filed: August 23, 2017
    Publication date: March 1, 2018
    Inventors: Dae-Hwan JANG, Seung Won PARK, Tae Woo KIM, Jung Gun NAM, Dae Young LEE, Gug Rae JO
  • Publication number: 20180052361
    Abstract: A display device includes a display area and a seal area which surrounds the display area. The display device includes a first display substrate, a second display substrate facing the first display substrate; and a sealant disposed between the first display substrate and the second display substrate, in the seal area. The first display substrate has a first base substrate, a first polarizing element including a plurality of first linear patterns extending along a first direction on the first base substrate, and a first protective layer on the first polarizing element and including a first opening. The sealant covers the first opening. Adjacent first linear patterns are separated from each other along a second direction, intersecting the first direction, by a first gap and the first opening exposes at least one first gap in the seal area.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 22, 2018
    Inventors: Jae Soo JANG, Ki Chul SHIN, Dae Hwan JANG
  • Patent number: 9885906
    Abstract: A method of manufacturing a polarizer, the method including: forming a metal layer on a substrate; forming a hard mask on the metal layer; forming an adhesion layer on a portion of the hard mask; forming a polymer layer on the hard mask and the adhesion layer; pressing a mold on the polymer layer to form a lattice pattern in association with the polymer layer; removing the mold and a portion of the lattice pattern; and patterning the adhesion layer, the hard mask, and the metal layer using a remaining portion of the lattice pattern as a mask.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: February 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Gun Nam, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Hyung-Bin Cho, Kang-Soo Han
  • Patent number: 9829741
    Abstract: A liquid crystal display device includes a wire grid polarizer, in which the wire grid polarizer is directly formed on a lower substrate, thereby decreasing the thickness of the liquid crystal display. In the wire grid polarizer formed on the lower substrate, a plurality of protective layers are formed on polarizing patterns that perform a polarizing function, so that it is possible to reduce or minimize the deterioration of characteristics of thin film transistors of the liquid crystal display, which are formed on the protective layers.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: November 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Hwan Jang, Dae-Young Lee, Jung-Gun Nam, Gug-Rae Jo, Eun-Jung Kim
  • Publication number: 20170307935
    Abstract: Provided is a display panel including a base substrate which includes a display area and a non-display area, a polarizing member disposed on a surface of the base substrate and including a plurality of grid patterns overlapping the display area and a reflective pattern overlapping the non-display area, and a pixel array layer which overlaps the polarizing member and is insulated from the polarizing member, wherein a first height from the surface of the base substrate to an upper surface of the reflective pattern is different from a second height from the surface of the base substrate to upper surfaces of the grid patterns.
    Type: Application
    Filed: November 22, 2016
    Publication date: October 26, 2017
    Inventors: Seung Won PARK, Dae Young LEE, Dong Eon LEE, Dae Hwan JANG, Gug Rae JO
  • Patent number: 9696474
    Abstract: A polarizer includes a base substrate, a polarizing layer disposed on the base substrate and including a plurality of first linear extensions spaced apart from each other, and an ultraviolet (UV)-blocking layer including a plurality of second linear extensions spaced apart from each other and crossing the first linear extensions. The polarizer may block an external UV light.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: July 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Gun Nam, Eun-Jung Kim, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Kang-Soo Han
  • Patent number: 9651727
    Abstract: A polarizer includes a base substrate and a metal pattern disposed on the base substrate and forming a wire grid. The wire grid has a width and a height and spaced apart from adjacent wire grid by a separation distance. A pitch is a sum of the width and the separation distance. A fill factor is obtained by dividing the width by the pitch. The range of the fill factor is based on an extinction ratio of polarization and a transmittance of the polarizer.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: May 16, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Young Lee, Jung-Gun Nam, Yeon-Jae Lee, Dae-Hwan Jang, Gug-Rae Jo
  • Patent number: 9645456
    Abstract: Provided are a liquid crystal display (LCD) comprising: a first substrate; a second substrate which faces the first substrate; a liquid crystal layer which is disposed between the first substrate and the second substrate; a wire grid polarizer (WGP) which is disposed on the first substrate; a WGP insulating layer which is disposed on the WGP and covers the WGP; and a pad electrode which is disposed on the first substrate, wherein the first substrate comprises a non-overlap area protruding from the second substrate, a sidewall of the WGP insulating layer is located in the non-overlap area, and the pad electrode extends from the non-overlap area of the first substrate along the sidewall of the WGP insulating layer.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: May 9, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae Young Lee, Dae Hwan Jang, Eun Jung Kim, Jung Gun Nam, Moon Jung An, Joo Hyung Lee, Gug Rae Jo, Hyung Bin Cho
  • Patent number: 9618793
    Abstract: A liquid crystal display device includes a liquid crystal display panel and a backlight unit providing light to the liquid crystal display panel. The liquid crystal display panel includes a first substrate on which a thin film transistor is disposed, a second substrate facing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a first polarizer disposed on the second substrate having a plurality of metal patterns spaced apart from each other by an interval. The backlight unit faces the second substrate.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Gun Nam, Kyoung-Tai Han, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Atsushi Takakuwa
  • Patent number: 9541789
    Abstract: A method of fabricating a polarizing member includes: sequentially disposing a metal layer and a preliminary pattern layer on a base substrate including a display area and a non-display area; forming a patterned resin layer on the preliminary pattern layer in the display area, the patterned resin layer including patterns formed on a surface of the patterned resin layer; surface-treating the preliminary pattern layer and the patterned resin layer; forming a mask pattern including a photoresist material on the preliminary pattern layer disposed in the non-display area; forming preliminary patterns on the preliminary pattern layer using the patterned resin layer; and forming a wire grid polarizing unit in the display area by etching the metal layer using the preliminary pattern and the mask pattern as a polarizing pattern.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: January 10, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dae-Hwan Jang, Kang-Soo Han, Jung-Gun Nam, Dae-Young Lee, Gug-Rae Jo
  • Publication number: 20160370651
    Abstract: A liquid crystal display includes a first substrate. A plurality of fine metal lines is disposed on the first substrate. The plurality of fine metal lines including a plurality of small regions. A second substrate is aligned with the first substrate. A light blocking portion is disposed on the second substrate. The light blocking portion is disposed in a region between the small regions of the plurality of small regions of the plurality of tine metal lines.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Inventors: ATSUSHI TAKAKUWA, Dae Hwan Jang, Hyang-Shik Kong, Gug Rae Jo, Kyu Young Kim
  • Patent number: 9494721
    Abstract: A polarizer includes a base substrate and a dielectric stacked layer. The dielectric stacked layer in includes a first dielectric layer and second dielectric layer. The first dielectric layer has a high refractive index and a second dielectric layer has a low refractive index. A wire grid pattern is disposed on the dielectric stacked layer. The wire grid pattern has a line width, a separation distance and a pitch. The pitch is a sum of the line width and the separation distance. Adjacent grids of the wire grid pattern are spaced apart by the separation distance.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: November 15, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Gun Nam, Moon-Jung An, Dae-Young Lee, Dae-Hwan Jang, Gug-Rae Jo, Atsushi Takakuwa
  • Publication number: 20160306275
    Abstract: An exemplary embodiment discloses an imprint lithography method including: forming a first imprint pattern on a base substrate in a first area; forming a first resist pattern on the base substrate in a second area, the second area partially overlapping the first area; etching a third area using the first imprint pattern and the first resist pattern as an etch barrier, wherein the third area is a portion of the first area that is not overlapped with the second area; removing the first imprint pattern and the first resist pattern; forming a second imprint pattern on the base substrate in a fourth area which overlaps the second area and partially overlaps the third area; forming a second resist pattern on the base substrate in the third area; and etching the second area using the second imprint pattern and the second resist pattern as an etch barrier.
    Type: Application
    Filed: January 8, 2016
    Publication date: October 20, 2016
    Inventors: Seung-Won PARK, Dae-Hwan JANG, Min-Uk KIM, Jung-Gun NAM, Dae-Young LEE, Gug-Rae JO
  • Patent number: 9442236
    Abstract: A liquid crystal display includes a first substrate. A plurality of fine metal lines is disposed on the first substrate. The plurality of fine metal lines including a plurality of small regions. A second substrate is aligned with the first substrate. A light blocking portion is disposed on the second substrate. The light blocking portion is disposed in a region between the small regions of the plurality of small regions of the plurality of fine metal lines.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Atsushi Takakuwa, Dae Hwan Jang, Hyang-Shik Kong, Gug Rae Jo, Kyu Young Kim
  • Patent number: 9397315
    Abstract: An organic light emitting display device includes a substrate comprising a first side and a second side, a first electrode on the first side of the substrate, an emitting layer on the first electrode, a second electrode on the emitting layer, and a slit-shaped pattern at the second side of the substrate, and comprising a plurality of protrusions spaced apart from each other.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: July 19, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Min Wang, Mu Gyeom Kim, Gug Rae Jo, Dae Young Lee, Jung Gun Nam, Dae Hwan Jang
  • Publication number: 20160202550
    Abstract: Provided are a liquid crystal display (LCD) comprising: a first substrate; a second substrate which faces the first substrate; a liquid crystal layer which is disposed between the first substrate and the second substrate; a wire grid polarizer (WGP) which is disposed on the first substrate; a WGP insulating layer which is disposed on the WGP and covers the WGP; and a pad electrode which is disposed on the first substrate, wherein the first substrate comprises a non-overlap area protruding from the second substrate, a sidewall of the WGP insulating layer is located in the non-overlap area, and the pad electrode extends from the non-overlap area of the first substrate along the sidewall of the WGP insulating laver.
    Type: Application
    Filed: April 8, 2015
    Publication date: July 14, 2016
    Inventors: Dae Young LEE, Dae Hwan JANG, Eun Jung KIM, Jung Gun NAM, Moon Jung AN, Joo Hyung LEE, Gug Rae JO, Hyung Bin CHO
  • Patent number: 9335582
    Abstract: A wire grid polarizer includes a substrate, a wire grid layer which is disposed on the substrate and includes a plurality of wire patterns arranged with a predetermined interval, where gaps are defined between the wire patterns, and a passivation layer which is disposed on the wire grid layer and includes first passivation particles which cover a top portion of the gaps.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 10, 2016
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon-yong Park, Sung-hoon Lee, Byung-hoon Kim, Jung-gun Nam, Dae-young Lee, Dae-hwan Jang, Gug-rae Jo, Atsushi Takakuwa
  • Publication number: 20160116798
    Abstract: A method of manufacturing a polarizer, the method including: forming a metal layer on a substrate; forming a hard mask on the metal layer; forming an adhesion layer on a portion of the hard mask; forming a polymer layer on the hard mask and the adhesion layer; pressing a mold on the polymer layer to form a lattice pattern in association with the polymer layer; removing the mold and a portion of the lattice pattern; and patterning the adhesion layer, the hard mask, and the metal layer using a remaining portion of the lattice pattern as a mask.
    Type: Application
    Filed: April 21, 2015
    Publication date: April 28, 2016
    Inventors: Jung-Gun NAM, Dae-Young LEE, Dae-Hwan JANG, Gug-Rae JO, Hyung-Bin CHO, Kang-Soo HAN
  • Publication number: 20160114502
    Abstract: Provided are a method of manufacturing a mold, a method of manufacturing a polarizer, and a display apparatus including the polarizer. According to one or more exemplary embodiments, a method of manufacturing a mold, the method including: forming a polymer pattern on a substrate, the polymer pattern including protrusions; forming a wire grid template portion on the substrate by etching, the substrate being etched using protrusions of the polymer pattern as a mask; forming a cover mask covering a portion of the wire grid template portion; forming a recess in the substrate by etching, the substrate being etched using the cover mask, the recess having a bottom surface lower than an upper surface of the wire grid template portion; and removing the cover mask.
    Type: Application
    Filed: May 14, 2015
    Publication date: April 28, 2016
    Inventors: Kang-Soo HAN, Jung-Gun NAM, Moon-Jung AN, Dae-Young LEE, Dae-Hwan JANG, Gug-Rae JO
  • Publication number: 20160116799
    Abstract: A method of fabricating a polarizing member includes: sequentially disposing a metal layer and a preliminary pattern layer on a base substrate including a display area and a non-display area; forming a patterned resin layer on the preliminary pattern layer in the display area, the patterned resin layer including patterns formed on a surface of the patterned resin layer; surface-treating the preliminary pattern layer and the patterned resin layer; forming a mask pattern including a photoresist material on the preliminary pattern layer disposed in the non-display area; forming preliminary patterns on the preliminary pattern layer using the patterned resin layer; and forming a wire grid polarizing unit in the display area by etching the metal layer using the preliminary pattern and the mask pattern as a polarizing pattern.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 28, 2016
    Inventors: Dae-Hwan JANG, Kang-Soo Han, Jung-Gun Nam, Dae-Young Lee, Gug-Rae Jo