Patents by Inventor Ji-hye Choi

Ji-hye 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: 7812523
    Abstract: A display device includes a thin film transistor formed on a first insulating substrate, a first electrode electrically connected with the thin film transistor, an emission layer formed on the first electrode, a second electrode formed on the emission layer, an auxiliary electrode shaped like a mesh to at least partially expose the first electrode, the auxiliary electrode being electrically connected with the second electrode and receiving a common voltage therefrom, and a second insulating substrate placed on the auxiliary electrode. The exemplary embodiments of a display device, and a method of manufacturing the same, according to the present invention can apply a common voltage efficiently throughout the display and have an improved contrast ratio.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: October 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hoon Jung, Sung-soo Lee, Ji-hye Choi
  • Publication number: 20100133994
    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: Application
    Filed: July 20, 2009
    Publication date: June 3, 2010
    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
  • Publication number: 20090261715
    Abstract: An organic light emitting device includes a first pixel displaying a first color, a second pixel adjacent to the first pixel and displaying a second color, and a third pixel adjacent to the first pixel or the second pixel and displaying a third color, wherein the first pixel includes a first and second subpixel units that output respective lights having different color characteristics.
    Type: Application
    Filed: December 10, 2008
    Publication date: October 22, 2009
    Inventors: Un-Cheol Sung, Ji-Hye Choi, Young-Rok Song, Soo-Yeon Lee
  • Publication number: 20090121983
    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: Application
    Filed: October 13, 2008
    Publication date: May 14, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Un-Cheol SUNG, Beohm-Rock CHOI, Jung-Soo RHEE, Young-Rok SONG, Ji-Hye CHOI
  • Publication number: 20090066236
    Abstract: An organic light-emitting display device includes a thin film transistor on a substrate, a protective layer and a planarization layer covering the thin film transistor, a pixel electrode connected to the thin film transistor, and a wall positioned on at least a portion of the pixel electrode. The planarization layer includes an aperture which exposes a portion of the pixel electrode. An organic layer is formed on the pixel electrode, and a common electrode is formed on the organic layer, An auxiliary electrode layer is formed to overlap the wall on the common electrode.
    Type: Application
    Filed: August 22, 2008
    Publication date: March 12, 2009
    Inventors: Un-Cheol Sung, Jung-Soo Rhee, Ji-Hye Choi
  • Publication number: 20080132138
    Abstract: A method of manufacturing a display device having a display panel that includes a first electrode, a light emitting layer formed on the first electrode, and a second electrode on the light emitting layer, the manufacturing method comprising: aging the display panel by applying a predetermined electrical signal and a predetermined temperature so that the luminance of the light emitting layer lies between about 10 nits and 10,000 nits.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Inventors: Sung-soo Lee, Jae-hoon Jung, Ji-hye Choi, Kyong-tae Park, Young-rok Song
  • Publication number: 20080117196
    Abstract: A display device includes a pixel having a switch device, a driving device connected to the switch device, and a light emitting element to emit light based on a data signal provided to the driving device, a scanning driver to provide a scanning signal to the switch device, and a data driver to provide the data signal to the driving device in response to the scanning signal. The light emitting element is provided with a forward bias for a display period and with a reverse bias for a non-display period. The reverse bias applied to the light emitting element restores the internal resistance of the light emitting element, thereby releasing the luminance decrease of the light emitting element.
    Type: Application
    Filed: July 10, 2007
    Publication date: May 22, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Soo LEE, Chang-Woong CHU, Ji-Hye CHOI
  • Publication number: 20080094321
    Abstract: An organic light emitting diode display includes a display region where a plurality of thin film transistors and a plurality of emission layers are formed, and a peripheral area formed along the circumference of the display area; a flexible conductive film that includes contact portions, each of which is formed on the corresponding anisotropic conductive film, has a conductive layer and an insulating layer covering the conductive layer, and has substantially the same layout as the voltage pads; an anisotropic conductive film that is formed on the voltage pads; and voltage pads that are formed in the peripheral area and that apply at least one of a driving voltage and a common voltage to the display region.
    Type: Application
    Filed: October 18, 2007
    Publication date: April 24, 2008
    Inventors: Kyong-Tae PARK, Chang-Mo Park, Ji-Hye Choi
  • Publication number: 20080042946
    Abstract: A display panel includes a plurality of data lines each extended in a first direction substantially parallel with each other, a plurality of driving voltage lines each extended substantially parallel with the plurality of data lines, a plurality of gate lines each extended in a second direction substantially perpendicular to the first direction and a plurality of unit pixels each including a plurality of sub-pixels, each sub-pixel of a corresponding unit pixel having two short sides defined by two adjacent data lines and two long sides defined by two adjacent gate lines. Each sub-pixel of the corresponding unit pixel includes a switching element electrically connected to a same data line of the two adjacent data lines and one of the two adjacent gate lines, and a driving element electrically connected to the switching element and a same driving voltage line, the driving element drives a light-emitting element.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 21, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyong-Tae Park, Beohm-Rock Choi, Young-Soo Yun, Sung-Soo Lee, Young-Rok Song, Ji-Hye Choi
  • Publication number: 20080018798
    Abstract: A display device and a driving method thereof are provided. The display device includes a plurality of pixels that displays a first color, a second color, a third color, and a white color; a signal processor that generates a white color output image signal based on three input image signals displaying the first to third colors, generates a white color temperature correcting constant based on the white color output image signal, and generates first color, second color, and third color output image signals that correct the first color, second color, and third color input image signals based on the white color temperature correcting constant; and a data driver that converts the output image signal to a data voltage and supplies the data voltage to the pixel to allow the pixel to display an image.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 24, 2008
    Inventors: Kyong-Tae Park, Beohm-Rock Choi, Sung-Soo Lee, Young-Rok Song, Ji-Hye Choi
  • Publication number: 20070296878
    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: Application
    Filed: June 25, 2007
    Publication date: December 27, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Soo LEE, Beohm-Rock CHOI, Kyong-Tae PARK, Young-Rok SONG, Ji-Hye CHOI
  • Publication number: 20070296741
    Abstract: A display device and a driving method using four color pixels, a signal processor that converts three input image signals having gray levels to four output image signals that display four colors based on a look-up table without separate gamma conversion; and a data driver that generates a data voltage based on the output image signal and that supplies the data voltage to the pixels, thereby simplifying signal processing.
    Type: Application
    Filed: March 2, 2007
    Publication date: December 27, 2007
    Inventors: Kyong-Tae Park, Beohm-Rock Choi, II-Nam Kim, Sung-Soo Lee, Ji-Hye Choi
  • Publication number: 20070120468
    Abstract: The present invention discloses a display apparatus including: an insulating substrate, a metal film formed on a first surface of the insulating substrate and comprising a magnetic substance, a thin film transistor formed on a second surface of the insulating substrate, a first passivation film formed on the thin film transistor, a pixel electrode electrically connected with the thin film transistor and forming a pixel region, an organic layer formed on the pixel electrode, and a common electrode formed on the organic layer.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 31, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Soo LEE, Jae-Hoon JUNG, Un-Cheol SUNG, Ji-Hye CHOI
  • Publication number: 20070108899
    Abstract: A display device includes a thin film transistor formed on a first insulating substrate, a first electrode electrically connected with the thin film transistor, an emission layer formed on the first electrode, a second electrode formed on the emission layer, an auxiliary electrode shaped like a mesh to at least partially expose the first electrode, the auxiliary electrode being electrically connected with the second electrode and receiving a common voltage therefrom, and a second insulating substrate placed on the auxiliary electrode. The exemplary embodiments of a display device, and a method of manufacturing the same, according to the present invention can apply a common voltage efficiently throughout the display and have an improved contrast ratio.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 17, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Jae-hoon JUNG, Sung-soo LEE, Ji-hye CHOI