Patents by Inventor Jeong-Jin HWANG

Jeong-Jin HWANG 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: 20240153831
    Abstract: An apparatus and method for measuring air currents on the surface of a substrate, which can accurately measure the magnitude and direction of air currents on the surface of a wafer with wafer-type air current measurement sensors, are provided. The apparatus includes: a first air current measurement module measuring a magnitude of air currents on a surface of a first substrate, which is processed in accordance with a semiconductor manufacturing process; a second air current measurement module measuring a movement direction of the air currents; and a power module supplying power to the first and second air current measurement modules, wherein the first air current measurement module, the second air current measurement module, and the power module are mounted on a second substrate, which has the same shape as the first substrate.
    Type: Application
    Filed: October 19, 2023
    Publication date: May 9, 2024
    Inventors: Yong Jun SEO, Su Jin CHAE, Sang Hyun SON, Sang Min HA, Young Sik BANG, Jeong Mo HWANG, Dong Ok AHN
  • Publication number: 20240135863
    Abstract: A display device includes a display unit including pixels connected to data lines and scan lines, first and second temperature sensors for sensing first and second temperatures of the display unit, a data driver configured to generate a data signal configured to be supplied to the data lines using output data, and attached to a first printed circuit board configured to be fixed to a rear surface of the display unit, a timing controller configured to generate the output data using input data, and attached to a second printed circuit board configured to be fixed to the rear surface of the display unit, and a storage having a temperature weight table including a weight corresponding to the first and second temperatures and a plurality of temperature tables including temperature information of the display unit corresponding to an attachment position of the second printed circuit board.
    Type: Application
    Filed: July 13, 2023
    Publication date: April 25, 2024
    Inventors: Won Jin SEO, Tae Wan KIM, Hwa An SUNG, Hyun Sik YOON, Jeong Ah LEE, Dae Ho HWANG
  • Publication number: 20240112718
    Abstract: An electronic device includes a target address generation circuit configured to generate a counting signal by counting the number of times each logic level combination of an address is input by performing an internal read operation and an internal write operation during an active operation, configured to store the counting signal as the storage counting signal when the counting signal is counted more than a storage counting signal that is stored therein, and configured to store the address, corresponding to the counting signal, as a target address; and a refresh control circuit configured to control a smart refresh operation on the target address.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Applicant: SK hynix Inc.
    Inventors: Jeong Jin HWANG, Sung Nyou YU, Duck Hwa HONG, Sang Ah HYUN, Soo Hwan KIM
  • Publication number: 20240104209
    Abstract: A memory device includes a memory cell region including a plurality of rows; a row-hammer control circuit including first and second queues, and configured to: read counting data from a row indicated by a row address according to an active command, store the row address in the first queue according to a comparison result of the counting data and a first set value, store the row address in the second queue according to a comparison result of the counting data and a second set value, and select, as a row-hammer address according to a refresh management command or a target refresh command, one of the row addresses stored in the first queue and the second queue; and a row control circuit configured to refresh one or more rows corresponding to the row-hammer address according to the refresh management command or the target refresh command.
    Type: Application
    Filed: August 22, 2023
    Publication date: March 28, 2024
    Inventors: Jeong Jin HWANG, Chul Moon JUNG
  • Patent number: 11912916
    Abstract: The present disclosure relates to an organic electroluminescent compound represented by formula 1 and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having lower operating voltage, higher luminous efficiency and/or longer lifespan properties as compared with a conventional organic electroluminescent device.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: February 27, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hyun Kim, Ji-Song Jun, Jeong-Hwan Jeon, Yeon-Gun Lee, Seon-Jin Hwang, Young-Jun Cho
  • Patent number: 11881246
    Abstract: An electronic device includes a target address generation circuit configured to generate a counting signal by counting the number of times each logic level combination of an address is input by performing an internal read operation and an internal write operation during an active operation, configured to store the counting signal as the storage counting signal when the counting signal is counted more than a storage counting signal that is stored therein, and configured to store the address, corresponding to the counting signal, as a target address; and a refresh control circuit configured to control a smart refresh operation on the target address.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: January 23, 2024
    Assignee: SK hynix Inc.
    Inventors: Jeong Jin Hwang, Sung Nyou Yu, Duck Hwa Hong, Sang Ah Hyun, Soo Hwan Kim
  • Publication number: 20230223061
    Abstract: A semiconductor device includes an address input circuit configured to boost a voltage level of at least one bit of a row address to generate a boosting address and to drive a signal of a first node based on other bits of the row address and the boosting address. The semiconductor device also includes a word line selection signal generation circuit configured to drive a signal of a second node based on the signal of the first node and to generate a word line selection signal for selecting a word line based on the signal of the second node.
    Type: Application
    Filed: May 10, 2022
    Publication date: July 13, 2023
    Applicant: SK hynix Inc.
    Inventors: Jeong Jin HWANG, Sung Nyou YU, Min Jun CHOI
  • Publication number: 20220189534
    Abstract: An electronic device includes a target address generation circuit configured to generate a counting signal by counting the number of times each logic level combination of an address is input by performing an internal read operation and an internal write operation during an active operation, configured to store the counting signal as the storage counting signal when the counting signal is counted more than a storage counting signal that is stored therein, and configured to store the address, corresponding to the counting signal, as a target address; and a refresh control circuit configured to control a smart refresh operation on the target address.
    Type: Application
    Filed: November 8, 2021
    Publication date: June 16, 2022
    Applicant: SK hynix Inc.
    Inventors: Jeong Jin HWANG, Sung Nyou YU, Duck Hwa HONG, Sang Ah HYUN, Soo Hwan KIM
  • Patent number: 9886995
    Abstract: A semiconductor device includes a sense amplification unit suitable for sensing and amplifying data loaded on a data line pair; a pull-up driving unit suitable for supplying a first voltage to a pull-up power line of the sense amplification unit as a pull-up driving voltage in an active mode, and supplying second voltage higher than the first voltage to the pull-up power line as the pull-up driving voltage during an initial period of a precharge mode; a pull-down driving unit suitable for supplying a third voltage to a pull-down power line of the sense amplification unit as a pull-down driving voltage during the active mode and the initial period of the precharge mode; and a post over-driving control unit suitable for adjusting the initial period of the precharge mode by detecting a voltage level of the pull-up power line.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 6, 2018
    Assignee: SK Hynix Inc.
    Inventor: Jeong-Jin Hwang
  • Publication number: 20170133084
    Abstract: A semiconductor device includes a sense amplification unit suitable for sensing and amplifying data loaded on a data line pair; a pull-up driving unit suitable for supplying a first voltage to a pull-up power line of the sense amplification unit as a pull-up driving voltage in an active mode, and supplying second voltage higher than the first voltage to the pull-up power line as the pull-up driving voltage during an initial period of a precharge mode; a pull-down driving unit suitable for supplying a third voltage to a pull-down power line of the sense amplification unit as a pull-down driving voltage during the active mode and the initial period of the precharge mode; and a post over-driving control unit suitable for adjusting the initial period of the precharge mode by detecting a voltage level of the pull-up power line.
    Type: Application
    Filed: April 14, 2016
    Publication date: May 11, 2017
    Inventor: Jeong-Jin HWANG