Patents by Inventor Mu-Hyun Kim

Mu-Hyun Kim 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: 8480448
    Abstract: A donor film for a laser induced thermal imaging method capable of improving the optical efficiency of an emission layer, a light emitting device using the same, and a method of manufacturing the light emitting device are provided. The donor film for a laser induced thermal imaging method includes a base substrate, a light to heat conversion layer (LTHC) provided on the base substrate and having a pattern with a predetermined step difference, and a transfer layer provided on the LTHC. It is possible to improve the optical efficiency of the emission layer by patterning the transfer layer using the LTHC having the pattern with a predetermined step difference.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam-Choul Yang, Lian Duan, Mu-Hyun Kim, Seong-Taek Lee
  • Patent number: 8481992
    Abstract: A flat panel display capable of preventing a chipping phenomenon of a pixel definition layer, and a method for making the same are disclosed. The 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.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sam Il Kho, Nam Choul Yang, Mu Hyun Kim, Jae Ho Lee, Young Gil Kwon
  • Patent number: 8450928
    Abstract: Provided is an organic light emitting device, which is flexible and is capable of effectively preventing permeation of oxygen or moisture. The organic light emitting device includes a substrate; a metal sheet that faces the substrate; an organic light emitting unit that is interposed between the substrate and the metal sheet; an adhesive unit that is interposed between the substrate and the metal sheet to adhere the substrate and the metal sheet to each other and that is located around at least the organic light emitting unit; and an adhesive layer that is formed at a location on the metal sheet where the metal sheet contacts the adhesive unit and that is formed of a metal oxide or a metal nitride.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hong Chen, Jung-Mi Choi, Hoon Kim, Kie-Hyun Nam, Mu-Hyun Kim
  • Patent number: 8415873
    Abstract: An organic light emitting display device that prevents distortion of the image by preventing the transmitting light from scattering, and by preventing the degradation of the brightness and color coordinates caused by external light transmitting through the organic light emitting display device. The device includes a transmitting region and separate pixel regions interposed within the transmitting region; thin film transistors, a passivation film covering each thin film transistor; a pixel electrode that is electrically connected to the corresponding thin film transistor; an opposite electrode that faces the pixel electrode and is able to transmit light; an organic light emission layer that is interposed between the pixel electrode and the opposite electrode; a first electrode formed on a second surface of the substrate; a second electrode facing the first electrode; and a light transmission adjusting layer disposed between the first electrode and the second electrode.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: April 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Goo Kang, Mu-Hyun Kim
  • Publication number: 20130032829
    Abstract: An organic layer deposition apparatus, and a method of manufacturing an organic light-emitting display device by using the organic layer deposition apparatus. Here, the organic layer deposition apparatus includes a deposition source assembly. The deposition source assembly includes a first deposition source for discharging a deposition material, a second deposition material stacked on the first deposition source and discharging a different deposition material than the deposition material discharged from the first deposition source, a second deposition source nozzle unit disposed at a side of the second deposition source to face a deposition target and including a plurality of second deposition source nozzles, and a first deposition source nozzle unit disposed at the side of the second deposition source to face the deposition target and including a plurality of first deposition source nozzles formed to pass through the second deposition source.
    Type: Application
    Filed: June 1, 2012
    Publication date: February 7, 2013
    Inventors: Un-Cheol Sung, Mu-Hyun Kim
  • Publication number: 20130001528
    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: Application
    Filed: February 2, 2012
    Publication date: January 3, 2013
    Inventors: Seung-Wook Chang, Young-Hee Lee, Mu-Hyun Kim, Hyo-Yeon Kim, Sang-Woo Pyo, Seung-Mook Lee, Byeong-Wook Yoo
  • Patent number: 8338222
    Abstract: A method of fabricating an organic light emitting display is capable of improving device characteristics by patterning a plurality of organic layers of an emission layer and a charge transport layer using a thermal transfer method to optimize thicknesses of the organic layers corresponding to R, G and B pixels. The method includes: forming lower electrodes of R, G and B pixels on a substrate; forming an organic layer on the layer; and forming an upper electrode on the organic layer. Formation of the organic layer includes forming a portion of a hole injection layer and a hole transport layer of the R, G and B pixels over an entire surface of the substrate, the organic layer comprising a first portion and a second portion, the organic layer having a thickness equal to a sum of the thicknesses of the hole injection layer and the hole transport layer. Formation of the organic layer further comprises patterning the second portion of the organic layer, and patterning emission layers of the R, G and B pixels.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: December 25, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Byung-Doo Chin, Seong-Taek Lee
  • Publication number: 20120322190
    Abstract: An organic lighting emitting diode display device (OLED display device) and a method of fabricating the same. The OLED display device includes: a substrate; a first electrode disposed on the substrate; an emission layer disposed on the first electrode; a second electrode disposed on the emission layer; and a hole injection layer disposed between the first electrode and the emission layer or between the emission layer and the second electrode, and formed of an inorganic semiconductor material, which evaporates at a temperature of 1100° C. or less. The method includes forming the hole injection layer between the first electrode and the second electrode, by thermally evaporating the inorganic semiconductor material, at a temperature of 1100° C., or less.
    Type: Application
    Filed: August 23, 2012
    Publication date: December 20, 2012
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Bong Lee, Sok-Won Noh, Jin-Wook Seong, Mu-Hyun Kim
  • Publication number: 20120301986
    Abstract: An organic layer deposition apparatus including: a deposition source configured to discharge a deposition material; a deposition source nozzle unit arranged at a side of the deposition source and including a plurality of deposition source nozzles; a patterning slit sheet facing the deposition source nozzle unit and including a plurality of patterning slits, the patterning slit sheet being smaller than the substrate in at least one of a first direction or a second direction perpendicular to the first direction; a blocking member configured to be disposed between the substrate and the deposition source to block at least a portion of the substrate; and a heating member on the blocking member and configured to heat the blocking member, and the substrate is spaced apart from the organic layer deposition apparatus by a predetermined distance, and the substrate or the organic layer deposition apparatus is movable relative to the other.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 29, 2012
    Inventors: Myong-Hwan Choi, Mu-Hyun Kim, Sung-Bong Lee, Myung-Ki Lee
  • Publication number: 20120298970
    Abstract: A patterning slit sheet assembly to perform a deposition process to deposit a thin film on a substrate in a fine pattern. A patterning slit sheet assembly includes a patterning slit sheet including a slit unit, and a non-slit region that is located along edges of the slit unit, the patterning slit sheet being smaller than the substrate in at least one of a first direction or a second direction perpendicular to the first direction; a frame combined with the patterning slit sheet to support the patterning slit sheet; and a shielding unit extending on at least one inner side of the frame and overlapping an area including the edges of the slit unit.
    Type: Application
    Filed: May 1, 2012
    Publication date: November 29, 2012
    Inventors: Myung-Ki Lee, Sung-Bong Lee, Myong-Hwan Choi, Mu-Hyun Kim
  • Publication number: 20120299472
    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: Application
    Filed: August 3, 2012
    Publication date: November 29, 2012
    Inventors: Jin-Koo Chung, Sang-Hoon Yim, Jun-Ho Choi, Seong-Min Kim, Seung-Wook Chang, Hye-Dong Kim, Mu-Hyun Kim
  • Publication number: 20120299024
    Abstract: A patterning slit sheet assembly for performing a deposition process to form a thin film on a substrate in a desired fine pattern. The patterning slit sheet assembly includes a patterning slit sheet having a plurality of slits, a frame combined with the patterning slit sheet to support the patterning slit sheet, and a support unit including an upper member that is allowed to be moved or fixed to support the patterning slit sheet when a gravitational force is applied to the patterning slit sheet and a lower member disposed more apart from the patterning slit sheet than the upper member, wherein the upper member is fixed on the lower member.
    Type: Application
    Filed: May 10, 2012
    Publication date: November 29, 2012
    Inventors: Sung-Bong Lee, Myung-Ki Lee, Myong-Hwan Choi, Mu-Hyun Kim
  • Publication number: 20120301614
    Abstract: An organic layer deposition apparatus capable of protecting or preventing a patterning slit sheet from sagging, and a frame sheet assembly for the organic layer deposition apparatus.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 29, 2012
    Inventors: Myong-Hwan Choi, Sung-Bong Lee, Myung-Ki Lee, Mu-Hyun Kim
  • Publication number: 20120299023
    Abstract: An organic layer deposition apparatus for forming an organic layer on a substrate includes: a deposition source configured to discharge a deposition material; a deposition source nozzle unit arranged at a side of the deposition source and including a plurality of deposition source nozzles; and a patterning slit sheet facing the deposition source nozzle unit and including a plurality of patterning slits and at least one spacer arranged between a pair of adjacent patterning slits of the plurality of patterning slits, the patterning slit sheet being smaller than the substrate in at least one of a first direction or a second direction perpendicular to the first direction, and the substrate is spaced apart from the organic layer deposition apparatus by a predetermined distance, and at least one of the substrate or the organic layer deposition apparatus is movable relative to the other.
    Type: Application
    Filed: May 10, 2012
    Publication date: November 29, 2012
    Inventors: Dong-Kyu LEE, Mu-Hyun Kim, Young-Rok Song, Sang-Pil Lee, Jung-Bae Song, Jong-Heon Kim, Byung-Su Kim, Yun-Mi Lee, Jae-Kwang Ryu
  • Patent number: 8319420
    Abstract: An organic light emitting diode (OLED) may include a first electrode, a hole injection layer on the first electrode, an emission layer on the hole injection layer, an electron injection layer on the emission layer, and a second electrode on the electron injection layer, wherein an absolute value of a difference between a work function of the first electrode and a work function of the second electrode is less than 0.5 eV, and at least one of the hole injection layer and the electron injection layer is a multilayer.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: November 27, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Ryong Park, Il-Soo Park, Jun-Sik Oh, Dae-Yup Shin, Mu-Hyun Kim, Won-Jun Song, Seung-Wook Chang, Yeun-Joo Sung
  • Patent number: 8313843
    Abstract: A light-emitting polymer composition for a light-emitting layer in an organic EL display device includes at least first and second light-emitting polymers having different interfacial characteristics which lower a cohesion between elements of the first and second light-emitting polymers.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 20, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Jang-Hyuk Kwon, Min-Chul Suh
  • Publication number: 20120288619
    Abstract: An electrostatic chuck, a thin film deposition apparatus including the electrostatic chuck, and a method of manufacturing an organic light emitting display apparatus using the thin film deposition apparatus. The electrostatic chuck includes: a first plate; a first common wire disposed on the first plate and electrically connected to a plus terminal of an electric power source; first electrode patterns electrically connected to the first common wire, separated by a distance from each other, and extending from the first common wire; a second common wire disposed on the first plate and electrically connected to a minus terminal of the electric power source; second electrode patterns electrically connected to the second common wire, separated by a distance from each other, and extending from the second common wire; a first additional wire electrically connected to the first common wire; and a second additional wire electrically connected to the second common wire.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 15, 2012
    Inventors: Young-Mook Choi, Jong-Heon Kim, Mu-Hyun Kim, Beohm Rock Choi
  • Patent number: 8294358
    Abstract: An organic lighting emitting diode display device (OLED display device) and a method of fabricating the same. The OLED display device includes: a substrate; a first electrode disposed on the substrate; an emission layer disposed on the first electrode; a second electrode disposed on the emission layer; and a hole injection layer disposed between the first electrode and the emission layer or between the emission layer and the second electrode, and formed of an inorganic semiconductor material, which evaporates at a temperature of 1100° C. or less. The method includes forming the hole injection layer between the first electrode and the second electrode, by thermally evaporating the inorganic semiconductor material, at a temperature of 1100° C., or less.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: October 23, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Sang-Bong Lee, Sok-Won Noh, Jin-Wook Seong, Mu-Hyun Kim
  • Patent number: 8283219
    Abstract: Provided is an organic light-emitting display device (OLED) and method of manufacturing the same. The OLED comprises a substrate and a thin film transistor, with source/drain electrodes, located at a predetermined area on the substrate. A passivation layer is located on the source/drain electrodes with a via hole exposing one of the source/drain electrodes. A first pixel electrode is located at the bottom of the via hole, electrically coupled to the exposed source/drain electrode, and extending onto the side wall of the via hole and the passivation layer. A planarization pattern fills the via hole in which the first pixel electrode is located and exposes the portion of the first pixel electrode on the passivation layer.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: October 9, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Sang-Il Park, Iee-Gon Kim
  • Patent number: 8274212
    Abstract: An organic light emitting device includes a first electrode; a second electrode; an emissive layer disposed between the first electrode and the second electrode; a first hole injection layer disposed between the first electrode and the second electrode; and a second hole injection layer disposed between the first electrode and the second electrode. The first hole injection layer includes a metal fluoride and a first organic hole injection layer forming compound, and the second hole injection layer includes a metal oxide and a second organic hole injection layer forming compound.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: September 25, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Won-Jun Song, Yeun-Joo Sung, Mu-Hyun Kim