Patents by Inventor Beohm-Rock Choi

Beohm-Rock Choi 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: 8410683
    Abstract: An organic light emitting device and a manufacturing method thereof is provided. The organic light emitting device includes a first pixel that displays a first color, a second pixel that displays a second color, and a third pixel that displays a third color. The first pixel, the second pixel and the third pixel together form one pixel. Each of the first pixel, second pixel, and third pixel includes a pixel electrode having a transflective electrode, an organic emission layer on the pixel electrode that displays the first color, a common electrode on the third color organic emission layer, and a transparent supplementary member between the pixel electrode and the common electrode.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: April 2, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Bae Song, Un-Cheol Sung, Sung-Hun Lee, Beohm-Rock Choi, Jung-Soo Rhee, Sang-Woo Lee, Ji-Hye Choi, Jung-Yeon Kim
  • Patent number: 8330352
    Abstract: An organic light emitting device according to an exemplary embodiment of the present invention includes a plurality of first, second, and third pixels for displaying different colors, wherein the plurality of first and second pixels are alternately arranged in a first column, the plurality of third pixels are continuously arranged in a second column, and an interval between the third pixels is larger than an interval between the first pixel and the second pixel.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: December 11, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Un-Cheol Sung, Beohm-Rock Choi, Jung-Soo Rhee, Young-Rok Song, Ji-Hye Choi
  • Publication number: 20120295508
    Abstract: The present invention relates to an organic light emitting device, and the organic light emitting device according to an exemplary embodiment of the present invention includes a blue subpixel that is larger than a red subpixel and a green subpixel. The red subpixel and the green subpixel have the same layered structure such that the red subpixel and the green subpixel are formed by using the same shadow mask.
    Type: Application
    Filed: July 24, 2012
    Publication date: November 22, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Un-Cheol SUNG, Beohm-Rock CHOI
  • 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: 8253323
    Abstract: The present invention relates to an organic light emitting device, and the organic light emitting device according to an exemplary embodiment of the present invention includes a blue subpixel that is larger than a red subpixel and a green subpixel. The red subpixel and the green subpixel have the same layered structure such that the red subpixel and the green subpixel are formed by using the same shadow mask.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Un-Cheol Sung, Beohm-Rock Choi
  • Publication number: 20120098415
    Abstract: An organic light emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of pixels in a matrix. The OLED display may include a substrate, a translucent layer formed on the substrate, a first electrode formed on the translucent layer, an organic light emitting member formed on the first electrode, and a second electrode formed on the organic light emitting member and including a reflective material. According to some aspects, the thickness of the organic light emitting member of the pixels forming the OLED display may be different than one another, or portions of each pixel may have different thickness for the organic light emitting members forming the pixel. With different thicknesses, the optical characteristics of the pixels forming the OLED display may be effectively compensated for luminance and color purity. As a result, the lateral viewing angle of an OLED display may be improved.
    Type: Application
    Filed: August 8, 2011
    Publication date: April 26, 2012
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Rok SONG, Mu-Hyun KIM, Beohm-Rock CHOI, Jung-Bae SONG, Sang-Pil LEE
  • Publication number: 20120098008
    Abstract: An organic light emitting diode device includes a substrate, a transparent electrode disposed on the substrate, an emission layer disposed on the transparent electrode, a reflecting electrode disposed on the emission layer, and a gate insulating layer interposed between the substrate and the transparent electrode, the gate insulating layer being in contact with the transparent electrode and including a first inorganic dielectric layer having a thickness of about 1000 ? or less.
    Type: Application
    Filed: July 20, 2011
    Publication date: April 26, 2012
    Inventors: Jung-Bae Song, Sang-Pil Lee, Young-Rok Song, Beohm-Rock Choi
  • Patent number: 8063853
    Abstract: An organic light emitting diode (OLED) display includes a first pixel including a first light emitting diode, a first driving transistor connected to the first light emitting diode and having a first terminal, a second terminal, and a third terminal, and a first storage capacitor connected between the first terminal and the second terminal of the first driving transistor, and a second pixel including a second light emitting diode, a second driving transistor connected to the second light emitting diode and having a first terminal, a second terminal, and a third terminal, and a second storage capacitor connected between the first terminal and the second terminal of the second driving transistor, wherein the first storage capacitor has a different capacitance than the second storage capacitor.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: November 22, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Chul Jung, Beohm-Rock Choi, Joon-Chul Goh
  • Publication number: 20110266944
    Abstract: Each of thin film deposition assemblies of a thin film deposition apparatus includes: a deposition source that includes a deposition material; a deposition source nozzle unit arranged at a side of the deposition source and including a plurality of deposition source nozzles arranged in a first direction; a patterning slit sheet arranged opposite to the deposition source nozzle unit and having a plurality of patterning slits arranged in the first direction; and a barrier plate assembly including a plurality of barrier plates arranged in the first direction, the barrier plate assembly being arranged between the deposition source nozzle unit and the patterning slit sheet. The thin film deposition apparatus and the substrate are separated from each other and are movable relative to each other. The deposition material includes a material to produce the thin film of a red (R), green (G) or blue (B) emission layer, or an auxiliary layer.
    Type: Application
    Filed: April 25, 2011
    Publication date: November 3, 2011
    Inventors: Jung-Bae Song, Beohm-Rock Choi, Sang-Pil Lee, Young-Rok Song
  • Patent number: 8022900
    Abstract: An OLED display includes a pixel having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, each of which displays a different color, a gate line for transmitting gate signals to the pixel, a data line for transmitting data signals to the pixel, a first driving voltage line that transmits a driving voltage to the pixel and is substantially parallel to the data line, and a second driving voltage line that is connected to the first driving voltage line and is substantially parallel to the gate line.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: September 20, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Sik Koh, Nam-Deog Kim, Beohm-Rock Choi, Kyeng-Eun Roh, Kwang-Chul Jung, Joon-Hoo Choi, Jong-Moo Huh, Seung-Kyu Park, Joon-Chul Goh, Young-Soo Yoon
  • Patent number: 8008855
    Abstract: An organic light emitting display includes a base substrate, a driving transistor arranged on the base substrate, a first electrode electrically connected to the driving transistor, an organic light emitting layer arranged on the first electrode to generate a light, a second electrode arranged on the organic light emitting layer, an opposite substrate facing the base substrate and including micro-lenses to disperse the light generated by the organic light emitting layer, and a sub-electrode arranged on at least one of the micro-lenses, the sub-electrode making contact with the second electrode to be electrically connected to the second electrode.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: August 30, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Rok Song, Beohm-Rock Choi, Seong-Ho Kim
  • Publication number: 20110207244
    Abstract: An apparatus for depositing and inspecting an organic light emitting display panel includes a depositor part configured to deposit thin film layers on a panel, the thin film layers including an anode layer, an organic film layer, and a cathode layer, and an inspector part configured to measure spectra of light reflected from the thin film layers, compare the measured spectra to reference spectra, and determine thickness correctness of individual thin film layers.
    Type: Application
    Filed: February 17, 2011
    Publication date: August 25, 2011
    Inventors: Un-Cheol Sung, Beohm-Rock Choi
  • Patent number: 7994708
    Abstract: An organic light emitting device according to an exemplary embodiment of the present invention includes: a substrate; a first signal line and a second signal line formed on the substrate and intersecting each other; a common voltage line formed on the substrate, and intersecting one of the first signal line and the second signal line; a switching thin film transistor connected to the first signal line and the second signal line; a driving thin film transistor connected to the switching thin film transistor; an insulating layer covering the first signal line, the second signal line, the switching thin film transistor, and the driving thin film transistor; a pixel electrode formed on the insulating layer, and electrically connected to the driving thin film transistor; an organic light emitting member formed on the pixel electrode and including an emission layer and a member layer; and a common electrode formed on the organic light emitting member, wherein the member layer is made of a plurality of layers includ
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Beohm-Rock Choi, Sang-Woo Lee, Un-Cheol Sung, Jung-Soo Rhee, Young-Rok Song, Jung-Yeon Kim
  • Patent number: 7990044
    Abstract: The present invention provides an electrical processing apparatus and method for electrically processing a display panel having an organic light-emitting layer. The method for electrically processing a display panel having an organic light-emitting layer includes dividing a light-emitting region of the display panel into a plurality of regions; and applying a voltage to at least one region of the plurality of regions where an amplitude of the voltage exceeds an amplitude of a driving voltage of the display panel. The electrical processing apparatus includes a display panel comprising an organic light-emitting layer, a light emitting region, and a plurality of regions, the plurality of regions being defined by dividing the light emitting region; a jig for holding the display panel; and a current supplying portion, wherein the current supplying portion supplies a current individually to each of the plurality of regions.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: August 2, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Soo Lee, Beohm-Rock Choi, Kyong-Tae Park, Young-Rok Song, Ji-Hye Choi
  • Publication number: 20110180825
    Abstract: An organic light emitting device display, including a first electrode in red, green, and blue sub-pixels on a substrate, a hole injection layer above the substrate so as to cover the first electrode, a hole transport layer above the hole injection layer, an auxiliary layer between the hole injection layer and the hole transport layer in the red sub-pixel, a red light emission layer and a green light emission layer above the hole transport layer in the red sub-pixel and the green sub-pixel, the red light emission layer being between the green light emission layer and the hole transport layer, and a blue light emission layer above the hole transport layer in the blue sub-pixel.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 28, 2011
    Inventors: Sang-Pil Lee, Young-Rok Song, Jung-Bae Song, Beohm-Rock Choi
  • Patent number: 7986095
    Abstract: An organic light emitting diode display with enhanced luminance and light uniformity is presented, along with a method of manufacturing the display. The display including: a substrate, a first signal line formed on the substrate and a second signal line extending perpendicularly to the first signal line, and thin film transistors formed on the substrate and electrically coupled to the first signal line and the second signal line. A planarization member is formed on the same layer as the first signal line and/or the second signal line, such that it does not overlap the first signal line, the second signal line, and the thin film transistors. An insulating layer is formed on the first signal line, the second signal line, the thin film transistors, and the planarization member. Two electrodes are formed on the insulating layer connected to one of the thin film transistors and sandwiching a light emitting member.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: July 26, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Soo Rhee, Beohm-Rock Choi, Joon-Chul Goh
  • Patent number: 7965263
    Abstract: A display device and a method of driving the same, win which the display device includes a light emitting element and a driving transistor supplying a driving current to the light emitting element, and in which one of a data voltage or a reverse bias voltage is applied to the driving transistor in an alternating manner, and the reverse bias voltage is an AC voltage.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: June 21, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kunjal Parikh, Kyuha Chung, Nam-Deog Kim, Beohm-Rock Choi, Joon-Chul Goh, Joon-Hoo Choi
  • Patent number: 7935578
    Abstract: The present invention relates to a TFT, a TFT array panel, and a method of manufacturing the TFT array panel. A method of manufacturing the TFT array panel includes the steps of forming a first electrode and a second electrode that are separated from each other on a substrate, forming a silicon layer including amorphous silicon and polycrystalline silicon on the substrate, forming a semiconductor by patterning the silicon layer, forming a gate insulating layer on the semiconductor, forming a third electrode that is opposite to the semiconductor on the gate insulating layer, forming a passivation layer on the third electrode, and forming a pixel electrode on the passivation layer. The TFT array panel has high mobility because the TFT include polycrystalline silicon at the channel region of the TFT.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: May 3, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Joon-Chul Goh, Beohm-Rock Choi
  • Patent number: 7888860
    Abstract: An organic light emitting device includes a plurality of colored pixels, and a white pixel, wherein the respective pixels include; a first electrode, a second electrode which faces the first electrode, and a light emitting member disposed between the first electrode and the second electrode, and the white pixel further includes; a first semi-transparent member disposed on the first electrode to form a microcavity with the second electrode.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: February 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Un-cheol Sung, Jung-Soo Rhee, Beohm-Rock Choi, Jun-Ho Choi, Jae-Kook Ha, Soo-Yeon Lee, Seong-Min Kim
  • Patent number: 7880697
    Abstract: An organic light-emitting diode (OLED) display panel includes a plurality of pixels displaying a plurality of colors. Each pixel has an OLED element. A gamma voltage-generating section generates a reference gamma voltage based on a gamma curve in which the lowest gradation of the total number of gradations is mapped as a negative data voltage with respect to a reference voltage. A data conversion section converts a first data signal into a second data signal that includes data corresponding to the lowest gradation. A source drive section converts the second data signal into a third data signal by using the reference gamma voltage to provide the OLED display panel with the third data signal.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: February 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Beohm-Rock Choi, Kyong-Tae Park, Young-Rok Song