Patents by Inventor Sung-Joon Bae

Sung-Joon Bae 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: 20100156286
    Abstract: An organic electroluminescent display device comprises a substrate, including a pixel region and a non-pixel region at a boundary of the pixel region; a first electrode on the substrate in the pixel region; a separator over the first electrode, the separator located in the non-pixel region, the separator including a first portion having a first width and a second portion having a second width smaller than the first width, the first portion overlapping edges of the first electrode, and the second portion within the non-pixel region; an organic electroluminescent layer over the separator in the pixel region surrounded by the separator; and a second electrode on an entire surface of the organic electroluminescent layer and the separator.
    Type: Application
    Filed: January 25, 2010
    Publication date: June 24, 2010
    Inventors: Sung-Joon Bae, Jin-Ook Kim
  • Patent number: 7728509
    Abstract: An organic electroluminescent display device comprises a substrate, including a pixel region and a non-pixel region at a boundary of the pixel region; a first electrode on the substrate in the pixel region; a separator over the first electrode, the separator located in the non-pixel region, the separator including a first portion having a first width and a second portion having a second width smaller than the first width, the first portion overlapping edges of the first electrode, and the second portion within the non-pixel region; an organic electroluminescent layer over the separator in the pixel region surrounded by the separator; and a second electrode on an entire surface of the organic electroluminescent layer and the separator.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: June 1, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Joon Bae, Jin-Ook Kim
  • Publication number: 20100110048
    Abstract: The present invention relates to an organic electroluminescent display (OELD) device, more particularly, to a dual panel type OELD device and a method of fabricating the same. The OLED structure has first and second barrier walls having a reverse-taper shape with respect to the first substrate and first and second side surfaces, wherein the walls define novel polymer patterns with varying heights relative to each other.
    Type: Application
    Filed: October 8, 2009
    Publication date: May 6, 2010
    Inventors: Kyung-Hee Min, Sung-Joon Bae, Joon-Suk Lee, Do-Hyung Kim
  • Patent number: 7652422
    Abstract: Provided is a method of fabricating an organic electro luminescence device, the method comprising: forming a thin film transistor on a substrate; forming a passivation layer and a first electrode on the substrate including the thin film transistor; forming a contact hole exposing an upper surface of a drain electrode of the thin film transistor at a predetermined portion of the first electrode and the passivation layer; forming a buffer layer and a barrier rib on a predetermined portion of an upper surface of the first electrode; forming an organic emission layer within a region defined by the buffer layer; and forming a second electrode on the organic emission layer such that the second electrode is electrically connected with the drain electrode through the contact hole.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: January 26, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Joon Bae, Jae Yoon Lee
  • Publication number: 20090261723
    Abstract: An electroluminescent display device includes first and second substrates facing each other and having a pixel region and a non-pixel region; a thin film transistor and an array layer on an inner surface of the first substrate; a first electrode on an inner surface of the second substrate; a buffer layer on the first electrode in the non-pixel region; a shielding pattern on the buffer layer; a separator on the shielding pattern; an emitting layer on the first electrode in the pixel region; a second electrode on the emitting layer; and a connection electrode between the first and second substrates.
    Type: Application
    Filed: June 18, 2009
    Publication date: October 22, 2009
    Inventors: In-Jae Chung, Ki-Yong Kim, Sung-Joon Bae, Jae-Yong Park
  • Patent number: 7560863
    Abstract: An electroluminescent display device includes first and second substrates facing each other and having a pixel region and a non-pixel region; a thin film transistor and an array layer on an inner surface of the first substrate; a first electrode on an inner surface of the second substrate; a buffer layer on the first electrode in the non-pixel region; a shielding pattern on the buffer layer; a separator on the shielding pattern; an emitting layer on the first electrode in the pixel region; a second electrode on the emitting layer; and a connection electrode between the first and second substrates.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: July 14, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: In-Jae Chung, Ki-Yong Kim, Sung-Joon Bae, Jae-Yong Park
  • Patent number: 7518147
    Abstract: An organic electro luminescence device is provided. In the organic electro luminescence device, first and second electrodes are arranged to face each other and to be spaced apart from each other by a predetermined interval, and includes sub-pixels for reproducing an image. An array element is formed in the first substrate per sub-pixel, and includes at least one TFT. An organic electro luminescent diode is formed in the second substrate per sub-pixel. A spacer covered with a metal portion for electrically connecting the first and second substrates. A drain electrode of the TFT and a first electrode (anode) of the organic electro luminescent diode are electrically connected by the spacer covered with the metal portion.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: April 14, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Sung Joon Bae, Jae Yoon Lee
  • Patent number: 7459848
    Abstract: An organic electroluminescence device includes a buffer formed in a polygonal structure corresponding to each of sub-pixels, an electrode separator formed along an outer periphery of the buffer so as to separate the sub-pixels, an emission region formed in an inner region defined by the buffer, and an electric connection region formed in a region protruding from one side of the buffer.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: December 2, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Sung Joon Bae, Jae Yoon Lee
  • Patent number: 7456580
    Abstract: Provided is a light emitting device. Particularly, the light emitting device comprises a threshold voltage compensator. The threshold voltage compensator is connected between a gate and a drain of the driving TFT and has a gate connected to a second scan line to temporarily store at the storage capacitor a gate voltage reflecting a threshold voltage of the driving TFT in response to a second scan signal supplied by a second scan line and to transmit the data signal regardless of variations in the threshold voltage of the driving TFT when the output current is supplied to the light emitting diode.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: November 25, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Wook Han, Sung Joon Bae
  • Patent number: 7365367
    Abstract: An organic electroluminescent device includes a transparent substrate having at least first, second and third pixels defined thereon, a first longitudinal bank located between the first pixel and the second pixel, a second longitudinal bank located between the second pixel and the third pixel, and an organic luminous polymer layer over the substrate and between the first longitudinal bank and the second longitudinal bank. The device also includes a transverse bank extending between the first longitudinal bank and the second longitudinal bank. Sidewalls of the longitudinal banks and the transverse bank slope outwardly. The transverse bank has a height which is less than a height of the longitudinal banks. A method of forming the device utilizes nozzle coating or ink-jet coating, and a specially configured mask for producing the banks of differing heights.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: April 29, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Chang-Wook Han, Sung-Joon Bae, Hee-Sok Pang, Kwan-Soo Kim
  • Patent number: 7348655
    Abstract: An organic electro luminescence device is provided. A thin film transistor (TFT) is formed within a sub-pixel region defined by a gate line and a data line on a substrate. A passivation layer and a first electrode are sequentially formed on the substrate where the TFT is formed. A contact hole is formed at a predetermined portion of the passivation layer and the first electrode so as to expose a drain electrode of the TFT. An electrode separator and a buffer layer are misaligned with the gate line by a predetermined position, such that an emission region corresponding to the sub-pixel and a region including the contact hole of the TFT are separated. An organic electro luminescent layer is formed within a region defined by the buffer region. A second electrode is formed on the organic electrode luminescent layer and is connected to the drain electrode of the TFT through the contact hole.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: March 25, 2008
    Assignee: LG. Philips LCD. Co., Ltd
    Inventors: Sung Joon Bae, Jae Yoon Lee
  • Publication number: 20070296671
    Abstract: Provided is a light emitting device. Particularly, the light emitting device comprises a threshold voltage compensator. The threshold voltage compensator is connected between a gate and a drain of the driving TFT and has a gate connected to a second scan line to temporarily store at the storage capacitor a gate voltage reflecting a threshold voltage of the driving TFT in response to a second scan signal supplied by a second scan line and to transmit the data signal regardless of variations in the threshold voltage of the driving TFT when the output current is supplied to the light emitting diode.
    Type: Application
    Filed: June 30, 2006
    Publication date: December 27, 2007
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Chang Wook Han, Sung Joon Bae
  • Patent number: 7221337
    Abstract: An electro-luminescence display which obtains proper color realization even though identical data driving waveforms are applied to each group of R, G and B pixel cells. In the display, a plurality of data lines cross a plurality of gate lines to define a plurality of pixel cell areas. A plurality of power supply lines pass through the pixel cell areas. A switching device is provided in each pixel cell area in such a manner to be electrically connected to the gate line and the data line. A plurality of driving devices are patterned based on a ratio of channel width to channel length in accordance with the type of pixel cell area. Each driving device having a gate connected to one electrode of the switching device and a source connected to the power supply line at each of the pixel cell areas. A plurality of EL diodes are connected to the plurality of driving devices, respectively. A wiring is commonly connected to the plurality of power supply lines.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: May 22, 2007
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Woong Sik Choi, Chang Wook Han, Sung Joon Bae
  • Patent number: 7211944
    Abstract: An organic electroluminescent display (ELD) device includes first and second substrates having a plurality of sub-pixels defined thereon, an array element layer on the first substrate having a plurality of thin film transistors corresponding to each of the sub-pixels, a connecting electrode on the array element layer connected to one of the thin film transistors, a first electrode on an inner surface of the second substrate, an insulating layer and an electrode separator formed within a boundary region of each of the sub-pixels, the insulating layer formed beneath the first electrode and the electrode separator formed beneath the insulating layer, and an organic light-emitting layer and a second electrode formed in each of the sub-pixels, wherein the electrode separator includes a first region having a pattern structure for separately forming the organic light-emitting layer and the second electrode within each of the sub-pixels, a second region having a pattern structure for directly contacting the connectin
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 1, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sung-Joon Bae, Jae-Yong Park
  • Patent number: 7154217
    Abstract: An electro luminescence display device having a display area and a non-display area includes a plurality of display organic light emission layers formed in the display area and a dummy organic light emission layer formed in the non-display area.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: December 26, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Sung Joon Bae, Hee Suk Pang, Kyung Man Kim
  • Patent number: 7132792
    Abstract: An organic electroluminescence display device include: a substrate where a plurality of red (R), green (G) and blue (B) pixel regions are defined; a plurality of transparent electrodes on the substrate, each transparent electrode disposed in each pixel region; a buffer layer on the substrate in intervals among the transparent electrodes, the buffer layer overlapping side portions of the transparent electrodes; a separator on the buffer layer and arranged on one direction; a hole injection/transporting layer over the substrate covering the plurality of transparent electrodes, the buffer layer and the separator; a luminous layer on the hole injection/transporting layer and divided into each R, G or B pixel region; and a cathode electrode on the hole injection/transporting layer covering the divided luminous layer, the cathode electrode disposed all over the substrate to connect the R, G and B pixel regions.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: November 7, 2006
    Assignee: LG.Philips LCD Co., Ltd
    Inventor: Sung Joon Bae
  • Patent number: 7083900
    Abstract: A method for manufacturing an LCD including at least two stacked thin layers in which the upper thin film smoothly and completely covers the lower thin film includes the steps of coating a photo-resist on a patterned layer, patterning the photo-resist by exposing and developing the photo-resist with a mask which has lines and spaces in which a distance between the lines is smaller than a resolution of an exposure system used and etching the metal layer using the patterned photo-resist as a mask. The resulting photo-resist pattern has a comb shape.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: August 1, 2006
    Assignee: LG Electronics Inc.
    Inventor: Sung Joon Bae
  • Patent number: 7009405
    Abstract: A method and apparatus tests a flat display device to inspect for shorts and open circuits in a signal wire by using a magnetic sensor. The inspection method and apparatus scans the magnetic sensor along signal wires in a scan direction crossing multiple signal wires and detects at least one of a short or an open circuit in the signal wires based on current detected by the magnetic sensor.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 7, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Sung Joon Bae, Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
  • Publication number: 20060033446
    Abstract: An organic electroluminescent device including a driving element having a driving gate electrode connected to the switching element, the driving gate electrode formed uniformly on the substrate, a driving source electrode having a first driving source electrode along a first direction and a plurality of second driving source electrodes extending from the first driving source electrode along a second direction crossing the first direction, a driving drain electrode spaced apart from the driving source electrode, the driving drain electrode having a first driving drain electrode along the first direction and a plurality of second driving drain electrodes extending from the first driving drain electrode along the second direction, wherein the plurality of second driving source electrodes alternate with the plurality of second driving drain electrodes, wherein the driving source electrode and the driving drain electrode including an interval therebetween are facing the driving gate electrode.
    Type: Application
    Filed: June 17, 2005
    Publication date: February 16, 2006
    Inventors: Kyung-Man Kim, Doo-Hyun Ko, Sung-Joon Bae
  • Patent number: 6979583
    Abstract: An electro-luminescent display and a method of manufacturing thereof prevents the formation of a barrier interface between the anode electrode and the electro-luminescent layer by placing the electro-luminescent layer directly on the anode electrode so that there is no need to etch a subsidiary layer so that the electro-luminescent layer and the anode electrode have excellent electrical contact. The elimination of this etching step prevents damage to the anode electrode caused by collision of ions with the anode electrode during the etching process. Further, etch remainders or contaminant particles that exist in the etchant gas are prevented from accumulating on the anode electrode. Thus, the charge carriers of the anode are easily transported across the interface between the anode electrode and the electro-luminescent layer so as to greatly improve the expected life span, the brightness, and the efficiency of the electro-luminescent display.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: December 27, 2005
    Assignee: LG Philips LCD Co., Ltd.
    Inventors: Sung-Joon Bae, Jae-Yong Park