Patents by Inventor Yoon-Hyeung Cho

Yoon-Hyeung 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: 20120309122
    Abstract: The present invention is to provide an organic light emitting display and a method of manufacturing the same. The light emitting display according to the present invention includes: a first substrate on which a plurality of light emitting devices having first electrodes, organic light emitting layers, and second electrodes are disposed; a second substrate disposed to face the first substrate; a dam member disposed between the first substrate and the second substrate to surround the plurality of light emitting devices; an inorganic sealing material disposed between the first substrate and the second substrate in an outer area of the dam member and attaching the first substrate to the second substrate; and a silicon filling material provided between the first substrate and the second substrate inward of the dam member to be in contact with the second electrodes.
    Type: Application
    Filed: July 30, 2012
    Publication date: December 6, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Min-ho Oh, Yoon-hyeung Cho, Byoung-duk Lee, So-young Lee, Sun-young Lee, Won-jong Kim, Yong-tak Kim, Jin-baek Choi, Jong-hyuk Lee, Seung-han Lee
  • 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
  • Publication number: 20120256202
    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: Application
    Filed: November 16, 2011
    Publication date: October 11, 2012
    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
  • Publication number: 20120256201
    Abstract: An OLED display includes: a substrate; an organic light emitting element formed on the substrate and including a first electrode, an emission layer, and a second electrode; and an encapsulation layer formed on the substrate while covering the organic light emitting element. The encapsulation layer includes an organic layer and an inorganic layer, and a protrusion and depression structure is formed in an interface between the organic layer and the inorganic layer.
    Type: Application
    Filed: November 15, 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
  • Publication number: 20120235171
    Abstract: An organic light emitting diode display includes a substrate having a plurality of organic light emitting elements thereon and a thin film encapsulation layer on the substrate. The thin film encapsulation layer covers the organic light emitting elements, and the thin film encapsulation layer includes a first porous inorganic layer and a second inorganic layer on the first porous inorganic layer.
    Type: Application
    Filed: November 9, 2011
    Publication date: September 20, 2012
    Inventors: Yong-Tak KIM, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Sang-Hwan Cho, Yun-Ah Chung, Seung-Yong Song, Jong-Hyuk Lee
  • Patent number: 8258696
    Abstract: The present invention is to provide an organic light emitting display and a method of manufacturing the same. The light emitting display according to the present invention includes: a first substrate on which a plurality of light emitting devices having first electrodes, organic light emitting layers, and second electrodes are disposed; a second substrate disposed to face the first substrate; a dam member disposed between the first substrate and the second substrate to surround the plurality of light emitting devices; an inorganic sealing material disposed between the first substrate and the second substrate in an outer area of the dam member and attaching the first substrate to the second substrate; and a silicon filling material provided between the first substrate and the second substrate inward of the dam member to be in contact with the second electrodes.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: September 4, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Min-ho Oh, Yoon-Hyeung Cho, Byoung-duk Lee, So-young Lee, Sun-young Lee, Won-jong Kim, Yong-tak Kim, Jin-baek Choi, Jong-hyuk Lee, Seung-han Lee
  • Patent number: 8237356
    Abstract: An organic light emitting display device including: a substrate; a sealing member; an organic light emitting device between the substrate and the sealing member and for displaying images; a selective light absorbing layer on a surface of the sealing member facing the organic light emitting device and including pigments for selectively absorbing light; and a black matrix layer on the selective light absorbing layer corresponding to non-emission areas of the organic light emitting device.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: August 7, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yoon-Hyeung Cho, Jong-Hyuk Lee, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Sun-Young Lee, Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi
  • Patent number: 8207669
    Abstract: An organic light emitting display device includes a first substrate, a plurality of organic light emitting devices on the first substrate, a second substrate arranged opposite and substantially parallel to the first substrate with the organic light emitting devices therebetween, a plurality of spacers between the organic light emitting devices and the second substrate, and a plurality of fillers alternately arranged with the spacers and configured to fill in space between the first substrate and the second substrate, wherein at least portions of the spacers overlap with a plurality of light emitting regions corresponding to the organic light emitting devices. The spacers and fillers are composed of transparent materials having refractive indexes similar to each other so that visibility and image quality are not lowered and the distance between the substrates is substantially constant.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: June 26, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: So-Young Lee, Sun-Young Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, Jong-Hyuk Lee
  • Publication number: 20120153308
    Abstract: An organic light-emitting display apparatus is disclosed. In one embodiment, the display apparatus includes i) a substrate and ii) an organic light-emitting device formed on the substrate, the organic light-emitting device including a stack structure including a first electrode, an organic light-emitting layer, and a second electrode. The apparatus may further include a sealing layer formed on the substrate so as to cover the organic light-emitting device, the sealing layer including an inorganic layer and a porous layer interposed between the sealing layer and the organic light-emitting device. One embodiment can reduce a stress due to a sealing inorganic layer so as to maintain characteristics for a long time in a severe environment and not affect an organic light-emitting device.
    Type: Application
    Filed: April 18, 2011
    Publication date: June 21, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Min-Ho Oh, Yoon-Hyeung Cho, Byoung-Duk Lee, Yong-Tak Kim, So-Young Lee, Yun-Ah Chung
  • Publication number: 20120154717
    Abstract: In order to improve durability, a display apparatus includes a substrate; an encapsulation substrate facing the substrate; a display unit disposed between the substrate and the encapsulation substrate; a sealing unit disposed between the substrate and the encapsulation substrate so as to bond the substrate and the encapsulation substrate and spaced from the display unit; and a protective member formed over at least one surface among surfaces of the substrate and the encapsulation substrate, except surfaces facing the display unit. The protective member includes a base, a plurality of capsules comprising monomers, and a catalyst inducing polymerization of the monomers.
    Type: Application
    Filed: September 23, 2011
    Publication date: June 21, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Yun-Ah Chung, Jong-Hyuk Lee, Seung-Young Song, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Yong-Tak Kim
  • Patent number: 8169132
    Abstract: An organic light emitting diode (OLED) display device and a method of manufacturing the same is disclosed. In one embodiment, the OLED device includes a substrate; a display unit formed on a display area of the substrate; and an encapsulating film covering i) the display unit and ii) a non-display area surrounding the display area, wherein the density and thickness of the encapsulating film increase in a direction from a center portion of the encapsulating film to an edge portion of the encapsulating film.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: May 1, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Min-Ho Oh, Yoon-Hyeung Cho, Byoung-Duk Lee, So-Young Lee, Sun-Young Lee, Jong-Hyuk Lee
  • Publication number: 20120098108
    Abstract: Disclosed are a passivation film for an electronic device having a nitride film formed on a substrate by a plasma-enhanced chemical vapor deposition (PECVD) method using a silicon-containing gas and a nitrogen-containing gas and a plasma-processed film formed by plasma processing a surface of the nitride film by a PECVD method using an NH3 gas, an N2 gas, and a H2 gas, and a method of manufacturing the passivation film.
    Type: Application
    Filed: June 9, 2011
    Publication date: April 26, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Yong-Tak KIM, Yoon-Hyeung CHO, Min-Ho OH, Byoung-Duk LEE, So-Young LEE, Seung-Yong SONG, Jong-Hyuk LEE
  • Patent number: 8119256
    Abstract: An organic light emitting device is provided that includes: an anode including an anode material and for injecting holes; an organic layer including a light emitting layer on the anode; and a cathode on the organic layer and through which light emitted from the light emitting layer passes, wherein the cathode includes: a buffer layer, a metal oxide layer including a metal oxide, and a metal layer including a metal having an absolute work function value lower than an absolute work function value of the anode material and coupled to the buffer layer and the metal oxide layer.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: February 21, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jin-Baek Choi, Chang-Ho Lee, Won-Jong Kim, Yong-Tak Kim, Jong-Hyuk Lee, Yoon-Hyeung Cho, Byoung-Duk Lee, Min-Ho Oh, Sun-Young Lee, So-Young Lee
  • Patent number: 8110981
    Abstract: Provided is an organic light-emitting display apparatus with improved contrast. The organic light-emitting display apparatus includes: a substrate; an organic light-emitting device on the substrate, the organic light-emitting device including a first electrode, a second electrode, and an organic light-emitting layer between the first electrode and the second electrode; and a pixel define layer on the first electrode, the pixel define layer including an opening through which the first electrode is exposed and having a black color, wherein the organic light-emitting layer and the second electrode are sequentially disposed on a portion of the first electrode exposed through the opening, and the second electrode includes indium oxide doped with a metal or metal oxide.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: February 7, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Won-Jong Kim, Yoon-Hyeung Cho, Min-Ho Oh, Jong-Hyuk Lee, Yong-Tak Kim, So-Young Lee, Jin-Baek Choi, Sun-Young Lee, Byoung-Duk Lee
  • Patent number: 8058799
    Abstract: A flat panel display apparatus with reduced reflection of external light incident on the flat panel display apparatus. The flat panel display apparatus includes a substrate, a porous layer disposed on the substrate, and a plurality of display devices disposed on the substrate. Here, the porous layer is adapted to diffusedly reflect external light and/or to increase viewing angle of the flat panel display apparatus.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: November 15, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Won-Jong Kim, Yong-Tak Kim, Jin-Baek Choi, Jong-Hyuk Lee, Yoon-Hyeung Cho, Min-Ho Oh, Byoung-Duk Lee, So-Young Lee, Sun-Young Lee
  • Patent number: 8053985
    Abstract: An organic electroluminescent device and its method of manufacturing are provided. The organic electroluminescent device may include a rear substrate, an organic electroluminescent unit including a first electrode, an organic film, and a second electrode stacked on a surface of the rear substrate. It may also include a front substrate joined to the rear substrate to seal an internal space in which the organic electroluminescent unit is disposed. It may also include a porous oxide layer composed of a porous silica and a metal compound on a lower surface thereof. A device constructed according to the present invention may have excellent adsorption of moisture and oxygen, thereby increasing the life span of the device.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: November 8, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jong-Hyuk Lee, Hae-Seung Lee, Yoon-Hyeung Cho, Won-Jong Kim, Jin-Woo Park
  • Patent number: 8052499
    Abstract: An organic electroluminescence (EL) device which has a rear substrate, an organic EL element formed on the rear substrate and having a laminate structure in which a first electrode, an organic layer and a second electrode are sequentially laminated, a front substrate coupled to the rear substrate via sealant to seal an internal space in which the organic EL element is accommodated, and a transparent nanoporous oxide layer having nanoporous oxide particles disposed in the internal space formed by the rear substrate and the front substrate. Since the organic electroluminescence device includes the transparent nanoporous oxide layer having the nanoporous oxide particles and pores, it has an improved lifetime by increased moisture and oxygen absorbing properties.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: November 8, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jong-Hyuk Lee, Yoon-Hyeung Cho, Hyun-Jung Yang, Won-Jong Kim, Hae-Seung Lee
  • Patent number: 8044584
    Abstract: An organic electroluminescent device includes a substrate, an encapsulation substrate, an organic electroluminescent portion interposed between the substrate and the encapsulation substrate and a transparent moisture absorption layer. The transparent moisture absorption layer comprises at least one of a metal oxide and a metal salt with an average particle diameter of about 100 nm or less, a binder, and a dispersant. The transparent moisture absorption layer may be disposed in an internal space provided by the substrate and the encapsulation substrate and may be used in a front emission type organic electroluminescent device.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: October 25, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yoon-Hyeung Cho, Jong-Hyuk Lee, Hae-Seung Lee, Won-Jong Kim, Jin-Baek Choi
  • Publication number: 20110244607
    Abstract: Disclosed is an organic light emitting device which includes a substrate; a encapsulation substrate, an organic light emitting unit interposed between the substrate and the encapsulation substrate. A water vapor absorption material-containing transparent sealant layer covers the organic light emitting unit. The sealant layer includes a transparent sealant having a water vapor transmission rate (WVTR) of about 20 g/m2·day or less and a water vapor absorption material having an average particle size of about 100 nm or less.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 6, 2011
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Yoon-Hyeung CHO, Jong-Hyuk Lee, Won-Jong Kim, Min-Ho Oh, Byoung-Duk Lee, Jin-Baek Choi
  • Publication number: 20110233570
    Abstract: An organic light emitting diode (OLED) display including a microlens array is disclosed. In one embodiment, the OLED includes a substrate and an organic light emitting diode including a first electrode formed on the substrate, an organic emission layer formed on the first electrode, and a second electrode formed on the organic emission layer. The OLED also includes an encapsulation layer covering the organic light emitting diode, wherein part of the encapsulation layer contacts the substrate, and a microlens array neighboring the encapsulation layer. In one embodiment, the distance between the organic emission layer and the microlens array is about 0.5 ?m to about 300 ?m.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 29, 2011
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: So-Young LEE, Sun-Young LEE, Yoon-Hyeung CHO, Min-Ho OH, Byoung-Duk LEE