Patents by Inventor Jae-Kwang AHN

Jae-Kwang AHN 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).

  • INTERNAL REFERENCE VOLTAGE GENERATION DEVICE
    Publication number: 20240184318
    Abstract: An internal reference voltage generation device may include a cell array including a plurality of cells which provide reference voltages of different levels. Each of the plurality of cells may include one of a plurality of divider resistors included in a resistor string; a transmission gate configured to output a voltage of a divider node which is connected to the one divider resistor, in response to a select signal; and a unit decoder configured to provide the select signal to the transmission gate.
    Type: Application
    Filed: May 12, 2023
    Publication date: June 6, 2024
    Inventors: Jae Hyeong HONG, Jung Yeop LEE, Bon Kwang KOO, Heon Ki KIM, Young Seok NAM, Young Jo PARK, Keun Seon AHN, Soon Sung AN, Sung Hwa OK, Se Min LEE, Seung Yeop LEE, Nam Hea JANG, Jun Seo JANG, Ji Eun JOO
  • ORGANIC ELECTROLUMINESCENT DEVICE
    Publication number: 20240147845
    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: December 6, 2023
    Publication date: May 2, 2024
    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
  • MULTI-COMPONENT HOST MATERIAL AND AN ORGANIC ELECTROLUMINESCENCE DEVICE COMPRISING THE SAME
    Publication number: 20240090328
    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: October 26, 2023
    Publication date: March 14, 2024
    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
  • Organic electroluminescent device
    Patent number: 11917907
    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: Grant
    Filed: November 22, 2021
    Date of Patent: February 27, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    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
  • DEVICE, METHOD AND COMPUTER-READABLE RECORDING MEDIUM FOR DETECTING EARTHQUAKE IN MEMS-BASED AUXILIARY SEISMIC OBSERVATION NETWORK
    Publication number: 20220380204
    Abstract: Provided are a device, method, and computer-readable recording medium for detecting an earthquake in a microelectromechanical system (MEMS)-based auxiliary seismic observation network.
    Type: Application
    Filed: August 9, 2022
    Publication date: December 1, 2022
    Inventors: Jae-Kwang AHN, Young-Woo KWON, Jangsoo LEE, Euna PARK, Eui-hong HWANG