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).

  • Publication number: 20150028294
    Abstract: Organic light-emitting displays and methods of manufacturing the same are disclosed. An organic light-emitting display includes a substrate; a display panel provided on the substrate, the display panel having an emission area in which an organic light-emitting device is provided and a non-emission area that separates the emission area; and a color-changing material layer provided on the display panel, wherein the color-changing material layer includes a light-transmission part corresponding to the emission area and a light-blocking part corresponding to the non-emission area.
    Type: Application
    Filed: November 25, 2013
    Publication date: January 29, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyun-Ho Kim, Seung-Yong Song, Sang-Hwan Cho, Soo-Youn Kim, Seung-Hun Kim, Sang-Hyun Park, Cheol Jang, Chung-Sock Choi
  • Publication number: 20150021569
    Abstract: A display apparatus and a filter for improving color purity (color saturation filter) are disclosed. In one aspect, the display apparatus includes a substrate, a display device formed on the substrate and having a plurality of pixel areas that emit different colors of light, and a color saturation filter on the display device. The color saturation filter is formed with a substantially uniform thickness over the plurality of pixel areas and has a transmissivity such that a full width at half maximum at the central wavelength of blue light emitted from one of the pixel areas is about 100 nm or less.
    Type: Application
    Filed: April 29, 2014
    Publication date: January 22, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Byoung-Duk LEE, Sang-Hwan CHO, Yun-Ah CHUNG
  • Publication number: 20150015530
    Abstract: The present disclosure relates to an organic light emitting diode (OLED) display. The organic light emitting diode (OLED) display includes an insulation substrate having a first surface and a second surface opposite to the first surface; an organic light emitting element disposed on the first surface of the insulation substrate; and an upper thin film disposed on the organic light emitting element or on the second surface of the insulation substrate, wherein the upper thin film includes a contact sensing layer and a thin multi-film adjacent to the contact sensing layer, and the thin multi-film includes at least one thin metal film and at least one dielectric layer.
    Type: Application
    Filed: October 21, 2013
    Publication date: January 15, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung-Hun KIM, Sang-Hwan CHO, Chung-Sock CHOI, Cheol JANG, Hyun-Ho KIM, Soo-Youn KIM, Sang-Hyun PARK, Seung-Yong SONG
  • Publication number: 20150015532
    Abstract: In a display device integrated with a touch screen panel, the display device has a plurality of pixels arranged therein. First sensing electrodes are formed on an upper surface of the display device. A first dielectric layer is formed on the first sensing electrodes. Second sensing electrodes and a plurality of second dummy patterns are formed on the first dielectric layer. The second sensing electrodes are arranged in a direction intersecting the first sensing electrodes, and the plurality of second dummy patterns are formed not to overlap with the second sensing electrodes. A second dielectric layer is formed on the second sensing electrodes and the second dummy patterns. In the display device, the first sensing electrodes, the second sensing electrodes and the second dummy patterns are formed of a metal material.
    Type: Application
    Filed: December 10, 2013
    Publication date: January 15, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Young Choung, Sang-Hwan Cho
  • Publication number: 20140374704
    Abstract: A flexible display panel and a method of manufacturing the same. The flexible display panel includes: a flexible panel including a display region and a non-display region, wherein the display region includes an organic light emitting device; a planarization layer disposed on the flexible panel; and a metal-dielectric layer disposed on the planarization layer and including a metal layer and a dielectric layer.
    Type: Application
    Filed: October 24, 2013
    Publication date: December 25, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Cheol JANG, Seung-Yong Song, Sang-Hwan Cho, Seung-Hun Kim, Chung-Sock Choi, Hyun-Ho Kim, Soo-Youn Kim, Sang-Hyun Park
  • Publication number: 20140367652
    Abstract: An organic light emitting diode (OLED) display includes: a substrate including a plurality of pixels, a thin film transistor disposed in the pixels; an organic light emitting element connected to the thin film transistor and disposed in the pixels, an encapsulation member located on the organic light emitting element, and an external light blocking member disposed above or under the encapsulation member and including a first portion and a second portion. The first portion has a thickness that is thinner than a thickness of the second portion, and the first portion is disposed in the pixels.
    Type: Application
    Filed: December 9, 2013
    Publication date: December 18, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: SANG-HWAN CHO, Soo-Youn Kim, Sang-Hyun Park, Yoon-Hyeung Cho, Seung-Yong Song
  • Publication number: 20140367648
    Abstract: An organic light emitting diode (“OLED”) display includes a display panel; and a window on the display panel. The OLED display further includes an optical unit on the display panel, and including a metal material film and a dielectric material film.
    Type: Application
    Filed: October 22, 2013
    Publication date: December 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sang-Hwan CHO, Soo-Youn KIM, Sang-Hyun PARK, Yoon-Hyeung CHO, Seung-Yong SONG
  • Publication number: 20140361682
    Abstract: In an aspect, a light-emitting display device and a method of fabricating the same is provided. The light-emitting display device includes a display substrate which comprises a pixel region and a non-pixel region; an encapsulation member which is disposed above the display substrate; and a destructive interference unit.
    Type: Application
    Filed: October 23, 2013
    Publication date: December 11, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sang Hwan Cho, Soo Youn Kim, Sang Hyun Park, Yoon Hyeung Cho, Seung Yong Song
  • Publication number: 20140361004
    Abstract: A flexible display apparatus includes a flexible substrate; a display layer on the flexible substrate and including a plurality of pixels; a cover layer which covers the display layer; a heating electrode layer on a surface of the flexible substrate opposite to the display layer, between the flexible substrate and the display layer, between the display layer and the cover layer, or on a surface of the cover layer opposite to the display layer; and a temperature sensing unit configured to sense an external temperature to the flexible display apparatus.
    Type: Application
    Filed: October 24, 2013
    Publication date: December 11, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Cheol Jang, Seung-Yong Song, Sang-Hwan Cho, Seung-Hun Kim, Chung-Sock Choi, Hyun-Ho Kim, Soo-Youn Kim, Sang-Hyun Park
  • Patent number: 8729797
    Abstract: A manufacturing method of an OLED display is provided. The method includes: forming an organic emission layer and a thin film encapsulation layer covering the organic emission layer on a substrate including a pixel area and a peripheral area; adhering a laminating film including a plurality of adhesive layers and an upper protective layer that covers an upper adhesive layer from among the adhesive layers on the thin film encapsulation layer, a lower adhesive layer from among the adhesive layers contacting the thin film encapsulation layer; radiating UV light on the laminating film that corresponds to the peripheral area of the substrate to decrease adhesion between the lower adhesive layer and the thin film encapsulation layer corresponding to the peripheral area; and peeling the laminating film corresponding to the peripheral area from the thin film encapsulation layer to maintain the laminating film that corresponds to the pixel area.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: So-Young Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, Yong-Tak Kim, Sang-Hwan Cho, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee
  • Publication number: 20140117330
    Abstract: A display device and a method of manufacturing the same. The display device includes a substrate, an organic light emitting diode (OLED) arranged on the substrate, a thin film encapsulation layer arranged on the substrate to cover the OLED and including an inorganic material layer and an organic material layer, and an anti-reflection layer arranged on the thin film encapsulation layer and including a dielectric layer and a metal layer.
    Type: Application
    Filed: September 6, 2013
    Publication date: May 1, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Hwan CHO, Jin Hwan JEON, Soo Youn KIM, Sang Hyun PARK, Yoon Hyeung CHO, Seung Yong SONG
  • Patent number: 8704214
    Abstract: An organic light emitting diode (OLED) display a includes: a substrate; an organic light emitting element on the substrate and including a first electrode, a light emission layer, and a second electrode; and an encapsulation layer on the substrate while covering the organic light emitting element. The encapsulation layer includes an organic layer and an inorganic layer. A mixed area, where organic materials forming the organic layer and inorganic materials forming the inorganic layer co-exist along a plane direction of the encapsulation layer, is formed at the boundary between the organic layer and the inorganic layer.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: So-Young Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, Sang-Hwan Cho, Yong-Tak Kim, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee
  • Patent number: 8698179
    Abstract: In one aspect, a cathode including the first metal layer, the transparent conductive layer formed on the first metal layer, and the second metal layer formed on the transparent conductive layer is applied to the organic light emitting device and thicknesses of the first metal layer, the transparent conductive layer, and the second metal layer are controlled so that the external light reflection of the organic light emitting device is prevented. The cathode may further include the third metal layer formed on the second metal layer.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Hwan Cho, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, Yong-Tak Kim, So-Young Lee, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee
  • Patent number: 8536781
    Abstract: The present invention relates to a black organic light-emitting diode that implements a resonant absorbing configuration, the black organic light-emitting diode comprising: a glass substrate; a first metal layer formed on the glass substrate; a first electrode formed on the first metal layer; an organic light-emitting layer formed on the first electrode; a second electrode formed on the organic light-emitting layer, opposite the first electrode; a first interlayer formed on the second electrode; a second metal layer formed on the first interlayer; and a second interlayer formed on the second metal layer, wherein by controlling the thickness of the first interlayer and the second interlayer, external light reflected by the first metal layer and the second electrode destructively interferes with light reflected by the second metal layer.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 17, 2013
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Yong-Hee Lee, Sang-Hwan Cho, Young Rag Do
  • Patent number: 8525154
    Abstract: Provided is a light-emitting device which has a simple structure and can be manufactured in a simple process, has increased light coupling efficiency and brightness, and can reduce adverse effects of optical resonance on a view angle and emission spectrum. The light-emitting device includes a substrate; a light-emitting diode formed on the substrate; and an optical resonance layer formed outside the light-emitting diode that induces resonance of light emitted from the light-emitting diode.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: September 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Chang Kim, Young-Woo Song, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jong-Seok Oh, Jae-Heung Ha
  • Patent number: 8461760
    Abstract: Thin film encapsulation for a flat panel display device and a method of manufacturing the thin film encapsulation structure. The thin film encapsulation structure of the flat panel display device includes thin film layers covering a display unit formed on a substrate, wherein the thin film layers comprise a plurality of inorganic layers and a hexamethyldisiloxane (HMDSO) layer interposed between the inorganic layers. Accordingly, as multiple layers of the thin film encapsulation structure may be formed in a single chamber, the manufacturing process may be simplified, and also, as the HMDSO layer, which is flexible, absorbs stresses, a risk of cracks occurring may also be reduced.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: June 11, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Ho Oh, Yoon-Hyeung Cho, Yong-Tak Kim, So-Young Lee, Sang-Hwan Cho, Byoung-Duk Lee, Sun-Young Jung, Yun-Ah Chung, Soo-Youn Kim, Dong-Jin Kim, Ji-Young Moon, Seung-Yong Song, Jong-Hyuk Lee
  • Patent number: 8373928
    Abstract: A polarizer includes a base and a plurality of grids arranged on a surface of the base parallel to one another. Each of the grids comprises an intermediate layer and a semi-transmissive metal layer that reflects a part of external light incident thereon and transmits a part of the external light incident thereon. The semi-transmissive metal layer and the intermediate layer are alternately deposited to include at least two semi-transmissive metal layers. The thicknesses of the semi-transmissive metal layers increases in a direction in which the semi-transmissive metal layer is disposed away from the external light. An organic light emitting display apparatus includes the polarizer and has improved contrast and brightness.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: February 12, 2013
    Assignees: Samsung Display Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jae-Heung Ha, Kyu-Hwan Hwang, Sang-Hwan Cho, Young-Woo Song, Jong-Hyuk Lee, Yong-Hee Lee, Jin-Kyu Yang
  • Publication number: 20120319151
    Abstract: In one aspect, a cathode including the first metal layer, the transparent conductive layer formed on the first metal layer, and the second metal layer formed on the transparent conductive layer is applied to the organic light emitting device and thicknesses of the first metal layer, the transparent conductive layer, and the second metal layer are controlled so that the external light reflection of the organic light emitting device is prevented. The cathode may further include the third metal layer formed on the second metal layer.
    Type: Application
    Filed: April 10, 2012
    Publication date: December 20, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Sang-Hwan Cho, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, Yong-Tak Kim, So-Young Lee, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee
  • Publication number: 20120280612
    Abstract: The present invention relates to a black organic light-emitting diode that implements a resonant absorbing configuration, the black organic light-emitting diode comprising: a glass substrate; a first metal layer formed on the glass substrate; a first electrode formed on the first metal layer; an organic light-emitting layer formed on the first electrode; a second electrode formed on the organic light-emitting layer, opposite the first electrode; a first interlayer formed on the second electrode; a second metal layer formed on the first interlayer; and a second interlayer formed on the second metal layer, wherein by controlling the thickness of the first interlayer and the second interlayer, external light reflected by the first metal layer and the second electrode destructively interferes with light reflected by the second metal layer.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yong-Hee LEE, Sang-Hwan CHO, Young Rag DO
  • Publication number: 20120256534
    Abstract: A manufacturing method of an OLED display is provided. The method includes: forming an organic emission layer and a thin film encapsulation layer covering the organic emission layer on a substrate including a pixel area and a peripheral area; adhering a laminating film including a plurality of adhesive layers and an upper protective layer that covers an upper adhesive layer from among the adhesive layers on the thin film encapsulation layer, a lower adhesive layer from among the adhesive layers contacting the thin film encapsulation layer; radiating UV light on the laminating film that corresponds to the peripheral area of the substrate to decrease adhesion between the lower adhesive layer and the thin film encapsulation layer corresponding to the peripheral area; and peeling the laminating film corresponding to the peripheral area from the thin film encapsulation layer to maintain the laminating film that corresponds to the pixel area.
    Type: Application
    Filed: November 22, 2011
    Publication date: October 11, 2012
    Inventors: So-Young Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, Yong-Tak Kim, Sang-Hwan Cho, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee