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: 20170278910
    Abstract: An organic light emitting display (OLED) device includes a substrate including a light emitting region and a peripheral region. An auxiliary power supply wire is disposed in the peripheral region. A lower electrode is disposed in the light emitting region. A pixel defining layer, disposed on the substrate, exposes a portion of the lower electrode and a portion of the auxiliary power supply wire. A first common layer, disposed on the pixel defining layer and the lower electrode, exposes the auxiliary power supply wire. A light emitting structure is disposed on the first common layer. The light emitting structure exposes the auxiliary power supply wire. A second common layer is disposed on the light emitting structure, the second common layer covering the light emitting structure and exposing the auxiliary power supply wire. An upper electrode is disposed on the second common layer and contacts the auxiliary power supply wire.
    Type: Application
    Filed: December 27, 2016
    Publication date: September 28, 2017
    Inventors: Deok-Young CHOI, Young-Jin CHO, Yong-Jae KIM, Kyoung-Jin PARK, Jin-Gon OH, Wang-Jo LEE
  • Patent number: 9768394
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which has a low driving voltage, excellent current and power efficiencies, and improved operation lifespan.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: September 19, 2017
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hyun-Ju Kang, Hee-Ryong Kang, Young-Gil Kim, Chi-Sik Kim, Seon-Woo Lee, Jeong-Eun Yang, Hee-Choon Ahn, Kyoung-Jin Park, Tae-Jin Lee
  • Publication number: 20170256722
    Abstract: The present invention relates to a hole transport material and an organic electroluminescent device comprising the same. By using the hole transport material according to the present invention, an organic electroluminescent device having significantly improved operational lifespan while maintaining low driving voltage and high current and power efficiencies can be produced.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 7, 2017
    Inventors: Jae-Hoon Shim, Kyoung-Jin Park, Tae-Jin Lee, Hee-Choon Ahn, Doo-Hyeon Moon, Ji-Song Jun, Jin-Ri Hong, Yoo-Jin Doh
  • Publication number: 20170249902
    Abstract: A pixel includes first through sixth transistors and an organic light emitting diode. The first transistor includes a gate electrode connected to a first node, a first electrode, and a second electrode connected to a second node. The second transistor provides a data signal to the first node in response to a scan signal. The third transistor provides a first power voltage to the first transistor in response to an emission control signal. The fourth transistor provides a reference voltage to the first node in response to a voltage control signal. The fifth transistor provides the reference voltage to the first node in response to an initialization control signal. The sixth transistor provides an initialization voltage to the second node in response to the initialization control signal. The organic light emitting diode is connected between the second node and a second power voltage.
    Type: Application
    Filed: January 12, 2017
    Publication date: August 31, 2017
    Inventors: Kyoung-Jin PARK, Yong-Jae KIM, Young-Jin CHO, Deok-Young CHOI
  • Patent number: 9748319
    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: Grant
    Filed: October 5, 2015
    Date of Patent: August 29, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kang Hyun Kim, Ki Soub Yang, Seung Ryul Choi, Kyoung Jin Park
  • Patent number: 9734913
    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: Grant
    Filed: March 7, 2016
    Date of Patent: August 15, 2017
    Assignees: SK HYNIX INC., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Jong Ho Lee, Ho Jung Kang, Nag Yong Choi, Byeong Il Han, Kyoung Jin Park, Sung Yong Chung
  • Patent number: 9732099
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 15, 2017
    Assignee: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Ji-Song Jun, Sang-Hee Cho, Kyoung-Jin Park
  • Publication number: 20170217992
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound of the present invention, it is possible to produce an organic electroluminescent device having low driving voltage and excellent luminous efficiency such as current efficiency and power efficiency, emitting color of high purity, and having improved lifespan.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 3, 2017
    Inventors: Ji-Song Jun, Sang-Hee Cho, Kyoung-Jin Park
  • Publication number: 20170213968
    Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.
    Type: Application
    Filed: July 22, 2015
    Publication date: July 27, 2017
    Inventors: Kyoung-Jin Park, Tae-Jin Lee, Jae-Hoon Shim, Yoo-Jin Doh, Hee-Choon Ahn, Young-Kwang Kim, Doo-Hyeon Moon, Jeong-Eun Yang, Su-Hyun Lee, Chi-Sik Kim, Ji-Song Jun
  • Publication number: 20170207396
    Abstract: The present invention relates to an organic electroluminescent device. The organic electroluminescent device of the present invention shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.
    Type: Application
    Filed: July 22, 2015
    Publication date: July 20, 2017
    Inventors: Kyoung-Jin Park, Tae-Jin Lee, Jae-Hoon Shim, Yoo-Jin Doh, Hee-Choon Ahn, Young-Kwang Kim, Doo-Hyeon Moon, Jeong-Eun Yang, Su-Hyun Lee, Chi-Sik Kim, Ji-Song Jun
  • Publication number: 20170200904
    Abstract: The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present invention, it is possible to produce an organic electroluminescent device having improved lifespan characteristics.
    Type: Application
    Filed: June 9, 2015
    Publication date: July 13, 2017
    Applicant: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Su-Hyun Lee, Chi-Sik Kim, Ji-Song Jun, Kyoung-Jin Park, Yoo-Jin Doh
  • Patent number: 9692020
    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: July 18, 2016
    Date of Patent: June 27, 2017
    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: 20170170408
    Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.
    Type: Application
    Filed: July 17, 2015
    Publication date: June 15, 2017
    Inventors: Kyoung-Jin Park, Tae-Jin Lee, Jae-Hoon Shim, Yoo-Jin Doh, Hee-Choon Ahn, Young-Kwang Kim, Doo-Hyeon Moon, Jeong-Eun Yang, Su-Hyun Lee, Chi-Sik Kim, Ji-Song Jun
  • Patent number: 9679657
    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: Grant
    Filed: January 5, 2016
    Date of Patent: June 13, 2017
    Assignee: SK hynix Inc.
    Inventors: Kyoung Jin Park, Sung Ho Bae, Byeong Il Han
  • Publication number: 20170141326
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present disclosure, it is possible to produce an organic electroluminescent device which has a low driving voltage, excellent current and power efficiencies, and improved operation lifespan.
    Type: Application
    Filed: May 27, 2015
    Publication date: May 18, 2017
    Inventors: Hyun-Ju Kang, Hee-Ryong Kang, Young-Gil Kim, Chi-Sik Kim, Seon-Woo Lee, Jeong-Eun Yang, Hee-Choon Ahn, Kyoung-Jin Park, Tae-Jin Lee
  • Publication number: 20170124941
    Abstract: A pixel circuit includes a first-transistor including gate-electrode receiving first emission control signal, first-electrode connected to ELVDD, and second-electrode connected to first node, a second-transistor including gate-electrode receiving second emission control signal, first-electrode, and second-electrode connected to second node, a third-transistor including gate-electrode connected to third node, first-electrode connected to first node, and second-electrode connected to first-electrode of the second-transistor, an OLED including anode connected to second node and cathode connected to ELVSS, a fourth-transistor including gate-electrode receiving bias scan signal, first-electrode connected to initialization voltage, and second-electrode connected to second node, a fifth-transistor including gate-electrode receiving bias scan signal, first-electrode connected to reference voltage, and second-electrode connected to third node, a sixth-transistor including gate-electrode receiving data scan signal, fir
    Type: Application
    Filed: June 3, 2016
    Publication date: May 4, 2017
    Inventors: Ji-Su Na, Kyoung-Jin Park
  • Publication number: 20170125699
    Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.
    Type: Application
    Filed: April 17, 2015
    Publication date: May 4, 2017
    Inventors: Hee-Choon Ahn, Young-Kwang Kim, Su-Hyun Lee, Ji-Song Jun, Seon-Woo Lee, Chi-Sik Kim, Kyoung-Jin Park, Nam-Kyun Kim, Kyung-Hoon Choi, Jae-Hoon Shim, Young-Jun Cho, Kyung-Joo Lee
  • Publication number: 20170117488
    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 specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, the organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared with the conventional device using one component host compound.
    Type: Application
    Filed: April 7, 2015
    Publication date: April 27, 2017
    Inventors: Hee-Choon Ahn, Young-Kwan Kim, Doo-Hyeon Moon, Su-Hyun Lee, Seon-Woo Lee, Chi-Sik Kim, Kyoung-Jin Park, Nam-Kyun Kim, Kyung-Hoon Choi, Jae-Hoon Shim, Young-Jun Cho, Kyung-Joo Lee
  • Publication number: 20170098784
    Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.
    Type: Application
    Filed: May 22, 2015
    Publication date: April 6, 2017
    Inventors: Chi-Sik Kim, Seon-Woo Lee, Su-Hyun Lee, Young-Kwang Kim, Hee-Choon Ahn, Jae-Hoon Shim, Kyoung-Jin Park, Nam-Kyun Kim, Kyung-Hoon Choi, Young-Jun Cho
  • Publication number: 20170077423
    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 dopant; the host consists of multi-component host compounds; at least a first host compound of the multi-component host compounds is a specific bicarbazole derivative containing an aryl group, and a second host compound is a specific carbazole derivative including a nitrogen-containing heteroaryl group. According to the present invention, an organic electroluminescent device using the multi-component host compounds has a high efficiency and long lifespan compared to the conventional organic electroluminescent device using one component of a host.
    Type: Application
    Filed: May 13, 2015
    Publication date: March 16, 2017
    Inventors: Hee-Choon Ahn, Young-Kwang Kim, Doo-Hyeon Moon, Jeong-Eun Yang, Su-Hyun Lee, Chi-Sik Kim, Ji-Song Jun, Kyoung-Jin Park, Jae-Hoon Shim, Yoo-Jin Doh, Bitnari Kim