Patents by Inventor Sam Il Kho

Sam Il Kho 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: 20130153865
    Abstract: An organic light-emitting diode includes a first electrode; a second electrode facing the first electrode; an emission layer (EML) between the first electrode and the second electrode; a first charge generation layer between the EML and the first electrode and including a first compound and a first charge generation material; a first layer between the EML and the first charge generation layer and including a second compound; a second charge generation layer between the EML and the first layer and including a third compound and a second charge generation material; a second layer between the EML and the second charge generation layer and including a fourth compound; and a buffer layer between the EML and the second layer. The first and third compounds each independently includes a compound represented by Formula 1, and the second and fourth compounds each independently includes a compound represented by Formula 2.
    Type: Application
    Filed: May 9, 2012
    Publication date: June 20, 2013
    Inventors: SAM-IL KHO, Mie-Hwa Park, Hyoung-Kun Kim, Yoon-Hyun Kwak, Ja-Hyun Lim, Chang-Woong Chu, Kwan-Hee Lee
  • Publication number: 20130140530
    Abstract: An organic light-emitting diode including: a first mixed layer between an emission layer and a first electrode and including first and second compounds; a second mixed layer between the emission layer and the first mixed layer and including third and fourth compounds; a first charge generation layer between the first mixed layer and the first electrode and including the first and second compounds and a first charge generation material; a second charge generation layer between the first mixed layer and the second mixed layer and including the third and fourth compounds and a second charge generation material; and a buffer layer between the emission layer and the second mixed layer, the first and the third compounds are each independently a compound represented by Formula 1 below, and the second compound and fourth compounds are each independently a compound represented by Formula 2 below:
    Type: Application
    Filed: July 6, 2012
    Publication date: June 6, 2013
    Inventors: Sam-Il Kho, Mie-Hwa Park, Hye-In Jeong, Yoon-Hyun Kwak, Dae-Yup Shin, Kwan-Hee Lee
  • Publication number: 20130032788
    Abstract: A carbazole-based compound of Formula 1 and an organic light-emitting diode including the same. The carbazole-based compound represented by Formula 1 has a triarylamine structure, wherein at least one of R1 to R5 is essentially a nitrogen-containing group. Thus, the carbazole-based compound has high glass transition temperature and/or high melting point, and is stable during electron injection, and when interposed between a pair of electrodes (anode and cathode) of an organic light-emitting diode, the carbazole-based compound may have excellent thermal resistance against Joule's heat generated in organic layers between the pair of electrodes, between the organic layers, or between the organic layer and the electrode during an operation of the organic light-emitting diode.
    Type: Application
    Filed: January 31, 2012
    Publication date: February 7, 2013
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Sun-Young Lee, Yoon-Hyun Kwak, Bum-Woo Park, Dae-Yup Shin, Kwan-Hee Lee, Hye-In Jeong, Sam-Il Kho, Mie-Hwa Park
  • Publication number: 20120326137
    Abstract: An organic light-emitting diode including a first electrode; a second electrode facing the first electrode; an emission layer interposed between the first electrode and the second electrode; a first hole transport layer including a first hole transporting compound; a second hole transport layer including a second hole transporting compound, the first and second hole transport layers being interposed between the first electrode and the emission layer; an electron transport layer interposed between the emission layer and the second electrode; a first mixing layer interposed between the first electrode and the first hole transport layer, contacting the first hole transport layer, and including the first hole transporting compound and a first cyano group-containing compound; and a second mixing layer interposed between the first electrode and the second hole transport layer, contacting the second hole transport layer, and including the second hole transporting compound and a second cyano group-containing compound
    Type: Application
    Filed: May 14, 2012
    Publication date: December 27, 2012
    Inventors: Won-Jun Song, Mie-Hwa Park, Kwan-Hee Lee, Sam-Il Kho, Sun-Hee Lee
  • Patent number: 8330356
    Abstract: An organic light emitting display device (OLED) suppressing a resonance effect and having an enhanced luminance, and a method of fabricating the same, are disclosed. One embodiment of the OLED includes: a substrate; a first electrode disposed over the substrate and having a reflective layer; an organic layer disposed over the first electrode and having a white emission layer; a second electrode disposed over the organic layer; and a transmittance controlled layer (TCL) disposed over the second electrode and having an optical path length of about 260 to about 1520 ?.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: December 11, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Seong Jeong, Sam-Il Kho, Byeong-Wook Yoo, Seong-Taek Lee, Jun-Sik Oh, Gun-Shik Kim
  • Patent number: 8188649
    Abstract: An organic light emitting diode (OLED) display device includes a substrate, a first electrode disposed on the substrate, an organic layer including an emission layer disposed on the first electrode, and a second electrode including stacked layers of Yb and Ag on the organic layer. A method of fabricating the organic light emitting diode (OLED) display device includes providing a substrate, forming a first electrode on the substrate, forming an organic layer including an emission layer on the first electrode, and forming a second electrode including stacked layers of Yb and Ag on the organic layer.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: May 29, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yeun-Joo Sung, Sam-Il Kho, Byeong-Wook Yoo
  • Publication number: 20120074439
    Abstract: A flat panel display includes a thin film transistor formed on a substrate; a planarization layer formed on the thin film transistor; a first electrode layer formed on the planarization layer and electrically connected with the thin film transistor through the via hole formed in the planarization layer; a pixel definition layer formed on the planarization layer and in which an opening for at least partially exposing the first electrode layer is formed; an adhesive reinforcement layer formed at least between the planarization layer and the pixel definition layer on the top of the planarization layer; an emitting layer formed on the first electrode layer; and a second electrode layer formed on the emitting layer and the pixel definition layer. The flat panel display has an improved adhesive property between a pixel definition layer and a planarization layer, which prevents a chipping phenomenon of the pixel definition layer.
    Type: Application
    Filed: October 11, 2011
    Publication date: March 29, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Sam Il Kho, Nam Choul Yang, Mu Hyun Kim, Jae Ho Lee, Young Gil Kwon
  • Patent number: 8120020
    Abstract: An organic light emitting device (OLED) including: a substrate; a first electrode; a second electrode facing the first electrode; a first blue light emitting layer, a green light emitting layer, a red light emitting layer, and a second blue light emitting layer all interposed between the first electrode and the second electrode; and a color filter disposed in a path of light emitted from the light emitting layers, wherein the first blue light emitting layer includes a deep blue dopant, and the second blue light emitting layer includes a sky blue dopant.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: February 21, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Sam-Il Kho, Dong-Seob Jeong, Jae-Young Cho, Sung-Woo Cho, Min-Chul Suh
  • Patent number: 8087964
    Abstract: A method of fabricating an Organic Light Emitting Diode (OLED) includes: forming red, green, blue and white pixel regions on a substrate; forming first electrodes in the respective pixel regions on the substrate, the first electrodes being spaced apart from one another; forming a pixel defining layer having an opening partially exposing surfaces of the first pixel electrodes on the substrate; forming organic layers including at least an organic EMission Layer (EML) in the opening of the pixel defining layer; forming a second electrode on the organic layers; forming a passivation layer on the second electrode; and forming red, green and blue color filter layers on the passivation layer using a laser induced thermal imaging method to correspond to the organic layers of the red, green and blue pixel regions, the red, green and blue color filter layers being sequentially formed and ends of a first-formed color filter layer overlapping second and third formed color filter layers.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: January 3, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Nam-Choul Yang, Sam-Il Kho, Byeong-Wook Yoo
  • Patent number: 7955709
    Abstract: An organic light emitting display device and a method of fabricating the same, in which a resonance effect is suppressed and transmittance is substantially the same in a wavelength band of visible light. The organic light emitting display device includes: a substrate; a first electrode disposed on the substrate and including a reflection layer; an organic layer disposed on the first electrode and including a white emission layer; a second electrode disposed on the organic layer; a transmittance controlled layer disposed on the second electrode; and a metal layer disposed on the transmittance controlled layer.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: June 7, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Hee-Seong Jeong, Sam-Il Kho, Byeong-Wook Yoo, Seong-Taek Lee, Jun-Sik Oh, Gun-Shik Kim
  • Patent number: 7872256
    Abstract: An organic light emitting display that includes a substrate, a plurality of first electrodes arranged in a corresponding plurality of pixels, the plurality of pixels including red pixels, blue pixels and green pixels, a hole injection layer arranged on the first electrodes arranged on the substrate, the hole injection layer having different respective thicknesses in correspondence with the pixels, a hole transport layer entirely covering the hole injection layer, a white light emitting layer entirely covering the hole transport layer, an electron transport layer arranged on the white light emitting layer, a second electrode arranged on the electron transport layer and a color filter arranged on the second electrode.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: January 18, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yeun-Joo Sung, Hee-Seong Jeong, Byeong-Wook Yoo, Jun-Sik Oh, Sam-Il Kho
  • Publication number: 20100163854
    Abstract: An organic light emitting device (OLED) including: a substrate; a first electrode; a second electrode facing the first electrode; a first blue light emitting layer, a green light emitting layer, a red light emitting layer, and a second blue light emitting layer all interposed between the first electrode and the second electrode; and a color filter disposed in a path of light emitted from the light emitting layers, wherein the first blue light emitting layer includes a deep blue dopant, and the second blue light emitting layer includes a sky blue dopant.
    Type: Application
    Filed: November 18, 2009
    Publication date: July 1, 2010
    Inventors: Sam-Il Kho, Dong-Seob Jeong, Jae-Young Cho, Sung-Woo Cho, Min-Chul Suh
  • Publication number: 20100051925
    Abstract: An organic light emitting diode (OLED) display device which can improve emission efficiency and reduce (or minimize) resonance effect, and a method of fabricating the same. The OLED display device includes a substrate; a first electrode disposed on the substrate and including a reflective layer; an organic layer disposed on the first electrode and including a white emission layer and a hole injection layer having a thickness between 200 and 300 ?; and a second electrode disposed on the organic layer.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 4, 2010
    Inventors: Sam-Il Kho, Hee-Seong Jeong, Byeong-Wook Yoo, Gun-Shik Kim, Seong-Taek Lee, Jun-Sik Oh
  • Publication number: 20090243472
    Abstract: A flat panel display device including: a plurality of sub-pixels for emitting light having different wavelengths; and an intensity adjusting layer in a light path of at least one sub-pixel from among the plurality of sub-pixels and for adjusting an intensity of light emitted from a corresponding sub-pixel of the at least one sub-pixel.
    Type: Application
    Filed: February 12, 2009
    Publication date: October 1, 2009
    Inventors: Dong-Seob Jeong, Sam-Il Kho, Sung-Woo Cho, Jae-Young Cho
  • Publication number: 20090045736
    Abstract: An organic light emitting diode (OLED) display device and a method of fabricating the same are provided. The OLED display device includes: a substrate; a first electrode on the substrate; an organic layer on the first electrode, and including a white emission layer including a mixed host having a first host and a second host having a different polarity from the first host; and a second electrode on the organic layer.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 19, 2009
    Inventors: Sam-Il Kho, Byeong-Wook Yoo, Sun-Hee Lee, Sang-Bong Lee
  • Publication number: 20090045739
    Abstract: An organic light emitting diode (OLED) display device includes a substrate, a first electrode on the substrate, an organic layer on the first electrode, the organic layer including a blue (B) emission layer, a green (G) emission layer, and a red (R) emission layer, the B emission layer including a dopant in an amount of about 10 wt % to about 12 wt %, and a second electrode on the organic layer.
    Type: Application
    Filed: August 14, 2008
    Publication date: February 19, 2009
    Inventors: Sam-Il Kho, Jae-Young Cho, Sun-Hee Lee
  • Publication number: 20080246392
    Abstract: Provided is a donor substrate, which has high transfer efficiency and increases the reliability of a device, a method of fabricating the same, and an organic light emitting diode (OLED) display device. The donor substrate includes: a base layer; a light-to-heat conversion (LTHC) layer disposed on the base layer; a transfer layer disposed on the LTHC layer and including a color filter layer; and an adhesive layer disposed on the transfer layer.
    Type: Application
    Filed: March 5, 2008
    Publication date: October 9, 2008
    Inventors: Sam-Il Kho, Jae-Young Cho
  • Publication number: 20080241561
    Abstract: An organic light emitting display device and a method of fabricating the same, in which a resonance effect is suppressed and transmittance is substantially the same in a wavelength band of visible light. The organic light emitting display device includes: a substrate; a first electrode disposed on the substrate and including a reflection layer; an organic layer disposed on the first electrode and including a white emission layer; a second electrode disposed on the organic layer; a transmittance controlled layer disposed on the second electrode; and a metal layer disposed on the transmittance controlled layer.
    Type: Application
    Filed: November 8, 2007
    Publication date: October 2, 2008
    Inventors: Hee-Seong Jeong, Sam-Il Kho, Byeong-Wook Yoo, Seong-Taek Lee, Jun-Sik Oh, Gun-Shik Kim
  • Publication number: 20080157663
    Abstract: An organic light emitting diode (OLED) display device includes a substrate, a first electrode disposed on the substrate, an organic layer including an emission layer disposed on the first electrode, and a second electrode including stacked layers of Yb and Ag on the organic layer. A method of fabricating the organic light emitting diode (OLED) display device includes providing a substrate, forming a first electrode on the substrate, forming an organic layer including an emission layer on the first electrode, and forming a second electrode including stacked layers of Yb and Ag on the organic layer.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 3, 2008
    Inventors: YEUN-JOO SUNG, SAM-IL KHO, BYEONG-WOOK YOO
  • Publication number: 20080116790
    Abstract: Provided are an organic light emitting diode display device including an emission layer structure between a first electrode and a second electrode, in which a first emission layer and a second emission layer are stacked, wherein the first emission layer emits one of red, green and blue light, and the second emission layer comprises a host and dopants of two different colors other than the color of the light emitted from the first emission layer among the red, green, and blue light, capable of reducing a driving voltage and obtaining high emission intensity at each wavelength of red, green, and blue light to thereby efficiently implement full color.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 22, 2008
    Inventors: Sam-Il Kho, Byeong-Wook Yoo, Yeun-Joo Sung