Patents by Inventor Sang-Hwan Cho

Sang-Hwan Cho 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: 10608308
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 31, 2020
    Assignee: KMW INC.
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Patent number: 10599000
    Abstract: The present disclosure provides a smart window including a first base layer and a second base layer positioned to face each other; a first conductive layer and a second conductive layer respectively positioned at inner surfaces of the first base layer and the second base layer; and an electrolyte layer interposed between the first conductive layer and the second conductive layer, wherein the first conductive layer includes a plurality of first nanostructures, and the second conductive layer includes a plurality of second nanostructures having a different average length from the plurality of first nanostructures.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Hwan Cho, Jong Lam Lee, Chung Sock Choi, So Young Lee, Sun Young Jung, Illhwan Lee, Ki Ryong Jeong
  • Publication number: 20190094541
    Abstract: A display device includes a display panel including a substrate and a plurality of display elements disposed on the substrate, and a diffraction panel including a plurality of diffraction patterns disposed on a path of light emitted from the plurality of display elements. The plurality of diffraction patterns are disposed in a first direction to have a first period, each of the plurality of diffraction patterns includes a first refractive layer, a second refractive layer disposed on the first refractive layer, and a third refractive layer disposed on the second refractive layer, and a refractive index of the second refractive layer is higher than a refractive index of the first refractive layer and a refractive index of the third refractive layer.
    Type: Application
    Filed: July 23, 2018
    Publication date: March 28, 2019
    Inventors: Chung Sock CHOI, Hyun Ho KIM, So Young LEE, Sang Hwan CHO
  • Publication number: 20190088904
    Abstract: A display device comprising: a substrate; a plurality of display elements disposed on the substrate; and a diffraction pattern layer disposed on a path of light emitted from the plurality of display elements. The diffraction pattern layer comprises a plurality of diffraction patterns which is disposed with a predetermined pitch, and the plurality of diffraction patterns do not overlap the plurality of display elements; and when a width of a cross section of each of the plurality of diffraction patterns is defined as a length of each diffraction pattern, the predetermined pitch and the length of each diffraction pattern satisfy the following inequation: 0.4?d1/DP1<1, where DP1 denotes the predetermined pitch, and d1 denotes the length of each diffraction pattern.
    Type: Application
    Filed: July 23, 2018
    Publication date: March 21, 2019
    Inventors: Sang Hwan CHO, Chung Sock CHOI, Hyun Ho KIM, So Young LEE, Cheol JANG, Sun Young JUNG
  • Publication number: 20190027798
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Patent number: 10181585
    Abstract: A display device includes a substrate, a first electrode, an organic light-emitting layer, a second electrode, a phase matching layer, and at least one light-absorbing layer. The substrate includes a plurality of pixel regions and a non-pixel region. The non-pixel region is arranged between adjacent pixel regions. The first electrode is arranged in each pixel region. The organic light-emitting layer is arranged on the first electrode. The second electrode is arranged on the organic light-emitting layer. The phase matching layer is arranged on the second electrode. The at least one light-absorbing layer is arranged on the phase matching layer. A thickness of the second electrode in the non-pixel region is different than a thickness of the second electrode in the pixel regions.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: January 15, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Doo Hwan Kim, Sang Hwan Cho, Chung Sock Choi
  • Publication number: 20180350883
    Abstract: A display device, including: a substrate; a first light-emitting element disposed on the substrate; an encapsulation layer disposed on the first light-emitting element; an input sensing layer disposed on the encapsulation layer; and a diffraction pattern layer disposed on the input sensing layer. The diffraction pattern layer may include a plurality of diffraction patterns arranged to have a first period in one direction.
    Type: Application
    Filed: May 16, 2018
    Publication date: December 6, 2018
    Inventors: So Young LEE, Sun Mi Kang, Hyun Ho Kim, Cheol Jang, Sun Young Jung, Sang Hwan Cho, Chung Sock Choi, Sang Hyun Han
  • Patent number: 10147896
    Abstract: An organic thin film transistor and a method of manufacturing the same, the transistor including a gate electrode; an organic semiconductor layer overlapping the gate electrode; and an insulating layer between the gate electrode and the organic semiconductor layer, the insulating layer having an organic/inorganic hybrid region, wherein the organic/inorganic hybrid region includes a polymer and an inorganic material that is chemically bonded to the polymer through a reactive group on the polymer, and the insulating layer includes a space adjacent to the polymer, the inorganic material being positioned in the space.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hun Kim, Hyo Jeong Kwon, Il Hwa Hong, Seung Yong Song, Sang Hwan Cho
  • Publication number: 20180314067
    Abstract: A display device includes a substrate, a first display element which is disposed on the substrate, and a plurality of diffraction patterns which are disposed on a path of light emitted from the first display element and arranged along a direction with a first period. when a width of a cross section of one of the plurality of diffraction patterns is defined as a first length, the first period and the first length satisfy Inequality (1): 0.4?d1/DP1?1,??(1) where DP1 is the first period, and d1 is the first length.
    Type: Application
    Filed: March 29, 2018
    Publication date: November 1, 2018
    Inventors: Sang Hwan CHO, So Young LEE, Sun Young JUNG, Chung Sock CHOI, Sun Mi KANG, Hyun Ho KIM, Cheol JANG, Sang Hyun HAN
  • Patent number: 10116027
    Abstract: An automatic RF filter tuning system and a method for manufacturing a filter using the same are disclosed. An RF filter tuning system for tuning an RF filter that includes a plurality of cavities having resonance elements and a cover having tuning areas that are positioned correspondingly to the resonance elements, includes a measuring unit configured to measure resonance characteristics of the cavity of the RF filter, a control unit configured to calculate a tuning value of the RF filter based on the resonance characteristics, and a tuning unit configured to tune the RF filter based on the tuning value calculated by the control unit. The tuning unit includes a striking unit configured to strike the tuning area of the cover of the RF filter, thereby adjusting the resonance value and tuning the RF filter.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: October 30, 2018
    Assignee: KMW INC.
    Inventors: Nam-Shin Park, Joung-Hoe Kim, Don-Yong Lee, Kang-Hui Suh, Jong-Youn Jung, Sang-Hwan Cho, Dong-Cheon Kim, Sang-Yoong Kim, Yong-Jin Park, Oh-Kwon Kim
  • Patent number: 10019121
    Abstract: Provided is a display device including: a display unit including a pixel and a non-pixel area; an encapsulation unit configured to seal the display unit; a touch sensing electrode at the non-pixel area on the encapsulation unit and provided with a plurality of first openings; and a reflection reducing unit at the pixel and the non-pixel area on the encapsulation unit and configured as a multilayer of a metal layer and a dielectric layer. The metal layer includes a non-pixel portion overlapping the touch sensing electrode and provided with a plurality of second openings.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: July 10, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chung Sock Choi, Sang Hwan Cho
  • Publication number: 20180074326
    Abstract: Provided is a head mounted display device including a housing for providing a darkroom space, a display module in the housing and to display an image, and an optical lens for expanding the image to provide the image to a user. The display module includes a destructive interference structure which removes the image reflected from the optical lens without reflecting the image again.
    Type: Application
    Filed: June 20, 2017
    Publication date: March 15, 2018
    Inventors: Soyoung LEE, Sunyoung JUNG, Hyunho KIM, Chungsock CHOI, Sang-hwan CHO, Cheol JANG
  • Patent number: 9886113
    Abstract: A display device including a substrate having a display area including a plurality of pixels and a peripheral area positioned outside the display area, a sealant in the peripheral area, a first spacer on the sealant, an encapsulation substrate on the first spacer, and a touch sensor on the encapsulation substrate facing the display area.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: February 6, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chung Sock Choi, Seung Hun Kim, Seung Yong Song, Cheol Jang, Sang Hwan Cho
  • Patent number: 9880686
    Abstract: A touch screen panel includes first electrode patterns disposed in a first direction, first connection patterns electrically connecting the first electrode patterns, second electrode patterns disposed in a second direction intersecting the first direction and insulated from the first electrode patterns, insulating patterns disposed on the first connection patterns, and second connection patterns disposed on the insulating patterns and electrically connecting the second electrode patterns, in which at least one of the first electrode patterns, the first connection patterns, the second electrode patterns, and the second connection patterns include a first polymer layer including a conductive material infiltrated therein, and the insulating patterns comprise a second polymer layer comprising a dielectric material infiltrated therein.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: January 30, 2018
    Assignees: Samsung Display Co., Ltd., IUCF-HYU
    Inventors: Seung Hun Kim, Cheol Jang, Sang Hwan Cho, Chung Sock Choi, Myung Mo Sung
  • Publication number: 20170371220
    Abstract: The present disclosure provides a smart window including a first base layer and a second base layer positioned to face each other; a first conductive layer and a second conductive layer respectively positioned at inner surfaces of the first base layer and the second base layer; and an electrolyte layer interposed between the first conductive layer and the second conductive layer, wherein the first conductive layer includes a plurality of first nanostructures, and the second conductive layer includes a plurality of second nanostructures having a different average length from the plurality of first nanostructures.
    Type: Application
    Filed: February 16, 2017
    Publication date: December 28, 2017
    Inventors: Sang Hwan CHO, Jong Lam LEE, Chung Sock CHOI, So Young LEE, Sun Young JUNG, Illhwan LEE, Ki Ryong JEONG
  • Publication number: 20170373282
    Abstract: A display device includes a substrate, a first electrode, an organic light-emitting layer, a second electrode, a phase matching layer, and at least one light-absorbing layer. The substrate includes a plurality of pixel regions and a non-pixel region. The non-pixel region is arranged between adjacent pixel regions. The first electrode is arranged in each pixel region. The organic light-emitting layer is arranged on the first electrode. The second electrode is arranged on the organic light-emitting layer. The phase matching layer is arranged on the second electrode. The at least one light-absorbing layer is arranged on the phase matching layer. A thickness of the second electrode in the non-pixel region is different than a thickness of the second electrode in the pixel regions.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 28, 2017
    Inventors: Doo Hwan KIM, Sang Hwan CHO, Chung Sock CHOI
  • Patent number: 9853240
    Abstract: An organic light emitting display device according to an exemplary embodiment of the present disclosure includes: a first substrate provided with a thin film transistor layer where a plurality of pixels are formed; a second substrate covering the first substrate; and a sealant formed along edges of the first and second substrates to bond both of the first and second substrates, wherein the sealant is formed above the thin film transistor of the first substrate, the sealant comprises an organic sealant and a protection member formed outside of the organic sealant, and the protection member is formed of a dual layer of an inorganic layer and an elastic member.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hun Kim, Tae Wook Kang, Seung Yong Song, Sang Hwan Cho
  • Patent number: 9837639
    Abstract: According to one or more embodiments of the present invention, a display apparatus includes: a substrate; a display unit which is formed on the substrate and includes an emission area and a non-emission area; a first coating layer which is formed on the display unit and has an uneven area formed on the emission area; a first blocking layer which is formed on the non-emission area of the first coating layer; and a second blocking layer which is formed on the first blocking layer and prevents reflection of external light.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Ho Kim, Soo-Youn Kim, Seung-Yong Song, Sang-Hwan Cho, Jin-Koo Kang, Seung-Hun Kim, Cheol Jang, Chung-Sock Choi, Sang-Hyun Park
  • Publication number: 20170331060
    Abstract: An organic thin film transistor and a method of manufacturing the same, the transistor including a gate electrode; an organic semiconductor layer overlapping the gate electrode; and an insulating layer between the gate electrode and the organic semiconductor layer, the insulating layer having an organic/inorganic hybrid region, wherein the organic/inorganic hybrid region includes a polymer and an inorganic material that is chemically bonded to the polymer through a reactive group on the polymer, and the insulating layer includes a space adjacent to the polymer, the inorganic material being positioned in the space.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 16, 2017
    Inventors: Seung Hun KIM, Hyo Jeong KWON, Il Hwa HONG, Seung Yong SONG, Sang Hwan CHO
  • Patent number: 9733770
    Abstract: A touch sensing structure and display device including the same are disclosed. In one aspect, the display device includes a display panel including a light-emitting region and a non-light-emitting region and a touch sensor formed over the display panel and including a plurality of sensing patterns. The display device also includes a destructive interference unit formed over the display panel and overlapping the touch sensor. The destructive interference unit includes a plurality of dielectric layers and a plurality of metal layers that are alternately stacked. At least one of the metal layers includes a plurality of metal patterns that are separated from each other.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 15, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chung Sock Choi, Jin Koo Kang, Soo Youn Kim, Seung Hun Kim, Hyun Ho Kim, Seung Yong Song, Cheol Jang, Sang Hwan Cho, Sang Hyun Park