Patents by Inventor Seung Wook Chang

Seung Wook Chang 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: 9882166
    Abstract: An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: January 30, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Patent number: 9660219
    Abstract: A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Woo Shin, Seung-Wook Chang, Young-Hee Lee, Chun-Gi You, Pil-Soo Ahn, Byoung-Ki Choi
  • Patent number: 9570525
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a bus electrode, an insulating layer covering the bus electrode and having a bus electrode hole exposing at least a part of the bus electrode, a pixel electrode formed on the insulating layer and electrically coupled with the bus electrode, a pixel defining layer exposing a part of the pixel electrode and a part of the bus electrode, a first intermediate layer on the pixel defining layer and the pixel electrode, the first intermediate layer having a first opening to expose the part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening and the bus electrode hole.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: February 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byoung-Seong Jeong, Sang-Yeol Kim, Seung-Wook Chang, Se-Ho Lee, Tae-Hyung Kim
  • Patent number: 9570520
    Abstract: A light emitting device, including a first electrode; a hole transport area on the first electrode; a first light emitting layer on the hole transport area, the first light emitting layer emitting a first color, and having a first thickness; a second light emitting layer adjacent to one side of the first light emitting layer, the second light emitting layer emitting a second color, and having a second thickness; a first shadow layer on the first light emitting layer, the first shadow layer including a same material as the second light emitting layer, and first shadow layer having a thickness corresponding to about 1% of the second thickness; an electron transport area on the first light emitting layer, the second light emitting layer, and the first shadow layer; and a second electrode on the hole transport area.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: February 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Wook Chang, Young Hee Lee
  • Publication number: 20160351639
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a bus electrode, an insulating layer covering the bus electrode and having a bus electrode hole exposing at least a part of the bus electrode, a pixel electrode formed on the insulating layer and electrically coupled with the bus electrode, a pixel defining layer exposing a part of the pixel electrode and a part of the bus electrode, a first intermediate layer on the pixel defining layer and the pixel electrode, the first intermediate layer having a first opening to expose the part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening and the bus electrode hole.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventors: Byoung-Seong JEONG, Sang-Yeol KIM, Seung-Wook CHANG, Se-Ho LEE, Tae-Hyung KIM
  • Patent number: 9461277
    Abstract: An organic light emitting display apparatus includes: a substrate; an insulation layer on the substrate and including first regions that are arranged along a first direction and second regions that are adjacent to the first regions and are arranged along the first direction; first lines on the insulation layer to cover the first regions and including first organic light-emitting layers; and second lines on the insulation layer to cover the second regions and including second organic light-emitting layers different from the first organic light-emitting layers. A portion of the first regions and a portion of the second regions facing each other are not parallel to the first direction.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: October 4, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eon-Seok Oh, Seung-Wook Chang, Young-Hee Lee
  • Patent number: 9450039
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a bus electrode, an insulating layer covering the bus electrode and having a bus electrode hole exposing at least a part of the bus electrode, a pixel electrode formed on the insulating layer and electrically coupled with the bus electrode, a pixel defining layer exposing a part of the pixel electrode and a part of the bus electrode, a first intermediate layer on the pixel defining layer and the pixel electrode, the first intermediate layer having a first opening to expose the part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening and the bus electrode hole.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: September 20, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byoung-Seong Jeong, Sang-Yeol Kim, Seung-Wook Chang, Se-Ho Lee, Tae-Hyung Kim
  • Publication number: 20160240801
    Abstract: A display device, including a substrate having a first region and second regions; transistors on the substrate in the first region and the second regions; first electrodes each connected to the transistors; an organic emission layer on the first electrodes; and second electrodes on the organic emission layer, molecular weights of organic materials of the organic emission layer in the first region and the organic emission layer in the second regions being different from each other.
    Type: Application
    Filed: September 29, 2015
    Publication date: August 18, 2016
    Inventors: Seung Wook CHANG, Young Hee LEE
  • Publication number: 20160163926
    Abstract: A light emitting device, including a first electrode; a hole transport area on the first electrode; a first light emitting layer on the hole transport area, the first light emitting layer emitting a first color, and having a first thickness; a second light emitting layer adjacent to one side of the first light emitting layer, the second light emitting layer emitting a second color, and having a second thickness; a first shadow layer on the first light emitting layer, the first shadow layer including a same material as the second light emitting layer, and first shadow layer having a thickness corresponding to about 1% of the second thickness; an electron transport area on the first light emitting layer, the second light emitting layer, and the first shadow layer; and a second electrode on the hole transport area.
    Type: Application
    Filed: May 22, 2015
    Publication date: June 9, 2016
    Inventors: Seung Wook CHANG, Young Hee LEE
  • Patent number: 9362345
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a pixel electrode and a bus electrode spaced apart and electrically insulated from each other, a pixel defining layer exposing a part of the pixel electrode including a central part thereof and a part of the bus electrode, a first intermediate layer on a top surface of the pixel defining layer between the pixel electrode and the bus electrode, the first intermediate layer having a first opening in a part of the bus electrode to expose a part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode disposed on the emission layer to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening of the first intermediate layer.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: June 7, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byoung-Seong Jeong, Sang-Yeol Kim, Seung-Wook Chang, Se-Ho Lee, Tae-Hyung Kim
  • Publication number: 20150270510
    Abstract: A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
    Type: Application
    Filed: June 5, 2015
    Publication date: September 24, 2015
    Inventors: Dong-Woo SHIN, Seung-Wook CHANG, Young-Hee LEE, Chun-Gi YOU, Pil-Soo AHN, Byoung-Ki CHOI
  • Patent number: 9142795
    Abstract: An organic light-emitting diode includes a first electrode and a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport layer between the first electrode and the emission layer and includes a first hole transport layer, a second hole transport layer, and a buffer layer between the first hole transport layer and the second hole transport layer; and an electron transport layer between the emission layer and the second electrode, wherein the buffer layer and the electron transport layer each include a mixture of an electron-transporting organometallic compound and an electron-transporting organic compound.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: September 22, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Na-Jeong Kim, Seung-Wook Chang
  • Patent number: 9054337
    Abstract: A display device includes a first optical resonance layer on a substrate, a switching structure on the first optical resonance layer, a first electrode on the switching structure, a light emitting structure on the first electrode, and a second electrode on the emitting structure. The switching structure may include a switching device and an optical distance controlling insulation layer covering the switching device. A first optical resonance distance for an optical resonance of the light may be provided between an upper face of the first optical resonance layer and a bottom face of the second electrode.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: June 9, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Woo Shin, Seung-Wook Chang, Young-Hee Lee, Chun-Gi You, Pil-Soo Ahn, Byoung-Ki Choi
  • Patent number: 9048456
    Abstract: An organic light-emitting diode (OLED) having first, second and third sub-pixels of different colors includes: a substrate; first and second electrodes; an organic emission layer (OEL) between the electrodes including a first OEL in the first sub-pixel, a second OEL in the second sub-pixel, and a common third OEL in the first, second and third sub-pixels; a hole transport layer (HTL) between the first electrode and OEL; a hole injection layer (HIL) between the first electrode and HTL; an intermediate layer between the HTL and HIL; a first optical thickness auxiliary layer (OTAL) between the first OEL and third OEL in the first sub-pixel and including a first hole transporting compound and a cyano group-containing compound; and a second OTAL including a second hole transporting compound between the third OEL and HTL in the first sub-pixel, and between the second OEL and HTL in the second sub-pixel.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Wook Chang, Young-Hee Lee, Mu-Hyun Kim, Hyo-Yeon Kim, Sang-Woo Pyo, Seung-Mook Lee, Byeong-Wook Yoo
  • Publication number: 20150060841
    Abstract: An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Inventors: Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Patent number: 8933625
    Abstract: An organic light emitting display apparatus includes a substrate and a sealing member that are separated from each other; a pixel electrode on the substrate; a pixel defining layer on the pixel electrode and exposing a portion of the pixel electrode; an intermediate layer including a light emitting layer on the exposed portion of the pixel electrode; a facing electrode on the pixel defining layer and the intermediate layer; and a reflection member on a surface of the sealing member facing the substrate and patterned to have an opening portion that exposes the pixel electrode, wherein the opening portion is formed such that a boundary portion of the opening portion is closer to a center of the intermediate layer than a boundary portion of the portion of the pixel electrode exposed by the pixel defining layer.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: January 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Koo Chung, Sang-Hoon Yim, Jun-Ho Choi, Seong-Min Kim, Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Publication number: 20140374732
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a bus electrode, an insulating layer covering the bus electrode and having a bus electrode hole exposing at least a part of the bus electrode, a pixel electrode formed on the insulating layer and electrically coupled with the bus electrode, a pixel defining layer exposing a part of the pixel electrode and a part of the bus electrode, a first intermediate layer on the pixel defining layer and the pixel electrode, the first intermediate layer having a first opening to expose the part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening and the bus electrode hole.
    Type: Application
    Filed: September 5, 2014
    Publication date: December 25, 2014
    Inventors: Byoung-Seong JEONG, Sang-Yeol KIM, Seung-Wook CHANG, Se-Ho LEE, Tae-Hyung KIM
  • Publication number: 20140354142
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are disclosed. The organic light emitting display apparatus includes, for example, a pixel electrode and a bus electrode spaced apart and electrically insulated from each other, a pixel defining layer exposing a part of the pixel electrode including a central part thereof and a part of the bus electrode, a first intermediate layer on a top surface of the pixel defining layer between the pixel electrode and the bus electrode, the first intermediate layer having a first opening in a part of the bus electrode to expose a part of the bus electrode, an emission layer disposed on the first intermediate layer, and an opposite electrode disposed on the emission layer to correspond to the pixel electrode and the bus electrode and contacting the bus electrode through the first opening of the first intermediate layer.
    Type: Application
    Filed: August 28, 2013
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Byoung-Seong JEONG, Sang-Yeol KIM, Seung-Wook CHANG, Se-Ho LEE, Tae-Hyung KIM
  • Publication number: 20140353596
    Abstract: An organic light-emitting diode includes a first electrode and a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport layer between the first electrode and the emission layer and includes a first hole transport layer, a second hole transport layer, and a buffer layer between the first hole transport layer and the second hole transport layer; and an electron transport layer between the emission layer and the second electrode, wherein the buffer layer and the electron transport layer each include a mixture of an electron-transporting organometallic compound and an electron-transporting organic compound.
    Type: Application
    Filed: September 10, 2013
    Publication date: December 4, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Na-Jeong Kim, Seung-Wook Chang
  • Patent number: 8884515
    Abstract: An organic light emitting display apparatus that includes a substrate, an organic light emitting unit formed on the substrate, a reflection member disposed on a non-light emitting region of the organic light emitting unit, and a sealing member that seals the organic light emitting unit. The organic light emitting display apparatus can function as a display apparatus or a mirror.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim