Patents by Inventor Kyoung-jin Park

Kyoung-jin Park 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: 20170062730
    Abstract: The present invention relates to an organic electroluminescent device comprising at least one light-emitting layer between an anode and a cathode, wherein the light-emitting layer comprises a host and a phosphorescent dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a bicarbazole derivative containing pyridine, and a second host compound is a carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, an organic electroluminescent device using the multi-component host compounds has high efficiency and long lifespan compared to a conventional device using one component of a host.
    Type: Application
    Filed: May 7, 2015
    Publication date: March 2, 2017
    Inventors: Hee-Choon Ahn, Young-Kwang Kim, Doo-Hyeon Moon, Su-Hyun Lee, Chi-Sik Kim, Seon-Woo Lee, Ji-Song Jun, Kyoung-Jin Park, Nam-Kyun Kim, Young-Jun Cho, Kyung-Hoon Choi, Jae-Hoon Shim, Yoo-Jin Doh
  • Publication number: 20170047527
    Abstract: The present disclosure relates to an organic electroluminescent device comprising an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer comprises one or more light-emitting layers; and at least one light-emitting layer comprises one or more dopant compounds and two or more host compounds. The organic electroluminescent device of the present disclosure has low driving voltage, high color purity, high luminous efficiency, and a long lifespan.
    Type: Application
    Filed: April 29, 2015
    Publication date: February 16, 2017
    Applicant: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Seon-Woo Lee, Su-Hyun Lee, Young-Kwang Kim, Hee-Choon Ahn, Doo-Hyeon Moon, Ji-Song Jun, Jae-Hoon Shim, Kyoung-Jin Park, Nam-Kyun Kim, Kyung-Hoon Choi, Chi-Sik Kim, Young-Jun Cho, Bitnari Kim
  • Publication number: 20170047009
    Abstract: A driver includes a first stage, a second stage, and a third stage. The first stage includes a first input terminal and a second input terminal. The first input terminal is electrically connected to a first clock line, which may transmit a first clock signal. The second input terminal is electrically connected to a second clock line, which may transmit a second clock signal. The second stage includes a third input terminal and a fourth input terminal. The third input terminal is electrically connected through the second input terminal to the second clock line. The fourth input terminal is electrically connected to the first clock line. The third stage includes a fifth input terminal and a sixth input terminal. The fifth input terminal is electrically connected through the fourth input terminal to the first clock line. The sixth input terminal is electrically connected to the second clock line.
    Type: Application
    Filed: April 5, 2016
    Publication date: February 16, 2017
    Inventors: Seung Kyu LEE, Kyoung Jin PARK, Hyun Ae PARK, Min Woo BYUN
  • Publication number: 20170039936
    Abstract: An organic light emitting display device includes a display panel, a pad part positioned at one side of the display panel and having a plurality of pads arranged to receive driving power and driving signals, a plurality of signal input lines arranged to transmit the driving power and the driving signal from the pad part to the display panel, and a protection circuit connected to one or more of the signal input lines, wherein the protection circuit includes a first protection transistor including a gate electrode, a first electrode, and a second electrode, wherein the signal input lines include a first clock signal input line, the first electrode is connected to the first clock signal input signal line, and the second electrode is connected to a first power source.
    Type: Application
    Filed: August 3, 2016
    Publication date: February 9, 2017
    Inventors: Min Woo BYUN, Kyoung Jin PARK
  • Publication number: 20170025487
    Abstract: An organic light emitting display device includes a substrate on which is included pixel columns extending in a column direction and adjacent to each other in a row direction, data lines extending in the column direction and adjacent to each other and between the pixel columns in the row direction, a power source line extending in the column direction, a scan line extending in the row direction, a switching transistor connected to the scan line and one of the data lines, a driving transistor connected to the switching transistor, an OLED connected to the driving transistor, and a storage capacitor including a first storage capacitor plate and a second storage capacitor plate overlapping the first storage capacitor plate in a thickness direction, connected to the power source line, and having a portion extending in the column direction between and not overlapping the data lines in the thickness direction.
    Type: Application
    Filed: February 26, 2016
    Publication date: January 26, 2017
    Inventors: Min Woo BYUN, Kyoung Jin PARK
  • Publication number: 20170012092
    Abstract: A method of forming an organic light emitting diode (OLED) display device is discussed. The method according to an embodiment includes forming a first bank pattern on a substrate and in an emission region and a non-emission region; forming a second bank pattern on the first bank pattern; forming an organic emission layer on the substrate in the emission region; and forming a planarization film on the substrate to include an opening under the first and second bank patterns in the non-emission region. The second bank pattern is on the first bank pattern in the non-emission region, and the first bank pattern is in the opening of the planarization film in the non-emission region.
    Type: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin PARK, Ki Soub YANG, Seung Ryul CHOI, Kang Hyun KIM, Sam Jong LEE
  • Publication number: 20170005151
    Abstract: An organic light emitting diode display device (100) including: a plurality of pixels (101, 102, 103) each including first (101a, 102a, 103a), second (101b, 102b, 103b) and third sub-pixels (101c, 102c, 103c), wherein the first sub-pixels (101a, 102a, 103a) of adjacent pixels (101, 102, 103), the second sub-pixels (101b, 102b, 103b) of adjacent pixels (101, 102, 103) and the third sub-pixels (101c, 102c, 103c) of adjacent pixels (101, 102, 103) constitute a plurality of sub-pixel groups (150); a first bank layer (171) dividing the plurality of sub-pixel groups (150) and dividing the first (101a, 102a, 103a), second (101b, 102b, 103b) and third sub-pixels (101c, 102c, 103c); and a second bank layer (173) on the first bank layer (171), the second bank layer (173) dividing the first (101a, 102a, 103a), second (101b, 102b, 103b) and third sub-pixels (101c, 102c, 103c).
    Type: Application
    Filed: June 30, 2016
    Publication date: January 5, 2017
    Inventors: Kang-Hyun KIM, Ki-Soub YANG, Seung-Ryul CHOI, Kyoung-Jin PARK
  • Patent number: 9520086
    Abstract: A power voltage generating apparatus supplies a power voltage to a plurality of pixel circuits of a display apparatus. The power voltage generating apparatus includes: a high voltage converter to generate a high voltage; a low voltage converter to generate a low voltage; a switching circuit to alternately output the high voltage and the low voltage at a power voltage terminal as the power voltage; and a discharging unit coupled to the power voltage terminal and configured to discharge the power voltage terminal until a voltage output is converted from the high voltage to the low voltage by using the switching circuit.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: December 13, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Man Bae, Byeong-Doo Kang, Jin-Woo Kim, Kyoung-Jin Park
  • Publication number: 20160336071
    Abstract: A method of operating a semiconductor memory device including a plurality of cell strings coupled to dummy word lines and normal word lines includes performing a first sub-program operation on selected normal memory cells by sequentially applying first program pulses to a selected normal word line and performing a second sub-program operation on the selected normal memory cells by sequentially applying second program pulses greater than the first program pulses to the selected normal word line, wherein at least one of the dummy word lines is biased in a same manner as the selected normal word line whenever each of the first program pulses is applied to the selected normal word line.
    Type: Application
    Filed: January 5, 2016
    Publication date: November 17, 2016
    Inventors: Kyoung Jin PARK, Sung Ho BAE, Byeong Il HAN
  • Patent number: 9495903
    Abstract: A display device including a display area and a non-display area surrounding the display area. The non-display area includes a test data line (TDL) which receives a test data signal from an external source, a plurality of connection line units (CLUs) which connect the data lines and the TDL, and a dummy line unit which is formed in the non-display area. Each of the CLUs includes a test switch having an input terminal connected to the TDL, an output terminal connected to one of a plurality of data lines disposed in the display area, and a control terminal connected to a test switch control line which receives a test switch control signal from an external source. At least one of the CLUs includes a disconnection portion which interrupts the TDL, wherein both ends of the disconnection portion are connected to the dummy line unit by bypass connection lines, respectively.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: November 15, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Hoon Kwon, Kyoung Jin Park, Min Woo Byun
  • Publication number: 20160329530
    Abstract: Disclosed an organic electroluminescent device and a method for fabricating the same. The device may include a thin film transistor disposed on a substrate; a first electrode formed for each pixel on the thin film transistor; a first pixel define layer formed to cover an edge portion of the first electrode; a second pixel define layer formed on the first pixel define layer; an organic layer formed on the first electrode; and a second electrode formed on the organic layer.
    Type: Application
    Filed: July 18, 2016
    Publication date: November 10, 2016
    Inventors: Kyoung Jin PARK, Ki Soub YANG, Dae Jung CHOI, Seung Ryul CHOI, Han Hee KIM, Kang Hyun KIM, Ji Hyun LEE
  • Patent number: 9478592
    Abstract: An organic light emitting diode (OLED) display device, and a method for manufacturing the OLED display device are discussed. The OLED display device according to one embodiment includes a substrate; a first bank pattern formed on the substrate and in an emission region and a non-emission region; a second bank pattern formed on the first bank pattern; an organic emission layer formed on the substrate in the emission region; and a planarization film formed on the substrate to include an opening under the first and second bank patterns in the non-emission region. The second bank pattern is on the first bank pattern in the non-emission region, and the first bank pattern is in the opening of the planarization film in the non-emission region.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: October 25, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin Park, Ki Soub Yang, Seung Ryul Choi, Kang Hyun Kim, Sam Jong Lee
  • Publication number: 20160260490
    Abstract: A data storage device includes a non-volatile memory device, which includes a memory cell array including a plurality of memory cells and a control circuit. Each of the memory cells includes a channel layer, a charge trap layer on the channel layer, and a control electrode on the charge trap layer, the charge trap layer being shared by the memory cells. The charge trap layer includes program regions respectively disposed below the control electrodes of the memory cells, and charge spread blocking regions, each of which is disposed between two adjacent ones of the program regions and between two adjacent ones of the control electrodes. The control circuit controls the memory cell array so that a potential barrier is generated in the charge spread blocking regions by charging the charge spread blocking regions with charges having the same polarity as that of program charges stored in the program regions.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 8, 2016
    Inventors: Jong Ho LEE, Ho Jung KANG, Nag Yong CHOI, Byeong Il HAN, Kyoung Jin PARK, Sung Yong CHUNG
  • Patent number: 9418893
    Abstract: Disclosed an organic electroluminescent device and a method for fabricating the same. The device may include a thin film transistor disposed on a substrate; a first electrode formed for each pixel on the thin film transistor; a first pixel define layer formed to cover an edge portion of the first electrode; a second pixel define layer formed on the first pixel define layer; an organic layer formed on the first electrode; and a second electrode formed on the organic layer.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 16, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin Park, Ki Soub Yang, Dae Jung Choi, Seung Ryul Choi, Han Hee Kim, Kang Hyun Kim, Ji Hyun Lee
  • Publication number: 20160172422
    Abstract: Disclosed is a display device that may include a thin film transistor array substrate that includes a plurality of first sub-pixels and a plurality of second sub-pixels, wherein one of the plurality of first sub-pixels includes a first emission region and a first non-emission region, and one of the plurality of second sub-pixels includes a second emission region and a second non-emission region; a first bank pattern in the first and second non-emission regions, the first bank pattern including a hydrophilic material; and a second bank pattern on an upper surface of the first bank pattern, the second bank pattern includes a hydrophobic material.
    Type: Application
    Filed: October 5, 2015
    Publication date: June 16, 2016
    Inventors: Kang Hyun KIM, Ki Soub YANG, Seung Ryul CHOI, Kyoung Jin PARK
  • Publication number: 20160163243
    Abstract: A display device comprises a display panel including a plurality of active pixels and a plurality of dummy pixels adjacent to the plurality of active pixels and a control unit controlling a pixel driving circuit formed in each of the active pixels and a dummy driving circuit formed in each of the dummy pixels. The dummy driving circuit includes a dummy driving transistor, an A dummy transistor, and a B dummy transistor, and a control terminal of the A dummy transistor is connected to a control terminal of the dummy driving transistor, and an input terminal of the A dummy transistor is connected to an output terminal of the B dummy transistor, and an output terminal of the A dummy transistor is connected to an output terminal of the dummy driving transistor.
    Type: Application
    Filed: April 6, 2015
    Publication date: June 9, 2016
    Inventors: Kyoung Jin Park, Min Kyu Woo
  • Publication number: 20160155786
    Abstract: An organic light emitting diode (OLED) display device, and a method for manufacturing the OLED display device are discussed. The OLED display device according to one embodiment includes a substrate; a first bank pattern formed on the substrate and in an emission region and a non-emission region; a second bank pattern formed on the first bank pattern; an organic emission layer formed on the substrate in the emission region; and a planarization film formed on the substrate to include an opening under the first and second bank patterns in the non-emission region. The second bank pattern is on the first bank pattern in the non-emission region, and the first bank pattern is in the opening of the planarization film in the non-emission region.
    Type: Application
    Filed: November 6, 2015
    Publication date: June 2, 2016
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyoung Jin PARK, Ki Soub YANG, Seung Ryul CHOI, Kang Hyun KIM, Sam Jong LEE
  • Publication number: 20160140896
    Abstract: A display device including a display area and a non-display area surrounding the display area. The non-display area includes a test data line (TDL) which receives a test data signal from an external source, a plurality of connection line units (CLUs) which connect the data lines and the TDL, and a dummy line unit which is formed in the non-display area. Each of the CLUs includes a test switch having an input terminal connected to the TDL, an output terminal connected to one of a plurality of data lines disposed in the display area, and a control terminal connected to a test switch control line which receives a test switch control signal from an external source. At least one of the CLUs includes a disconnection portion which interrupts the TDL, wherein both ends of the disconnection portion are connected to the dummy line unit by bypass connection lines, respectively.
    Type: Application
    Filed: April 3, 2015
    Publication date: May 19, 2016
    Inventors: Tae Hoon KWON, Kyoung Jin Park, Min Woo Byun
  • Patent number: 9287512
    Abstract: The present invention relates to a novel organic electroluminescent compound, layer and an organic electroluminescent device using the same. Said organic luminescent compound provides an organic light emitting layer and/or device which has high luminous efficiency and a long operation lifetime and requires a low driving voltage improving power efficiency and power consumption.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: March 15, 2016
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hee-Choon Ahn, Young-Jun Cho, Hyuck Joo Kwon, Bong-Ok Kim, Seok Keun Yoon, Doo-Hyeon Moon, Hee Sook Kim, Su-Hyun Lee, Hyo-Nim Shin, Kyung Joo Lee, Kyoung-Jin Park, Nam-Kyun Kim
  • Publication number: 20150357583
    Abstract: The present invention relates to a novel organic electroluminescent compound, layer and an organic electroluminescent device using the same. Said organic luminescent compound provides an organic light emitting layer and/or device which has high luminous efficiency and a long, operation lifetime and requires a low driving voltage improving power efficiency and power consumption.
    Type: Application
    Filed: August 13, 2015
    Publication date: December 10, 2015
    Inventors: Hee-Choon Ahn, Seok-Keun Yoon, Doo-Hyeon Moon, Hee-Sook Kim, Su-Hyun Lee, Hyo-Nim Shin, Kyung-Joo Lee, Kyoung-Jin Park, Nam-Kyun Kim, Young-Jun Cho, Hyuck-Joo Kwon, Bong-Ok Kim