Patents by Inventor Hee Hyun Han

Hee Hyun Han 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).

  • LIGHT-EMITTING ELEMENT AND DISPLAY DEVICE INCLUDING THE SAME
    Publication number: 20240079529
    Abstract: A light-emitting element includes a first semiconductor layer, a light-emitting layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the light-emitting layer, a device electrode layer disposed on the second semiconductor layer, a reflective electrode layer disposed on the device electrode layer, an insulating film surrounding a side surface of the light-emitting layer, a side surface of the second semiconductor layer, and a side surface of the device electrode layer, and a reflective layer surrounding a side surface of the insulating film, wherein the side surface of the device electrode layer is aligned with a side surface of the reflective electrode layer.
    Type: Application
    Filed: April 10, 2023
    Publication date: March 7, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Ji Hyun HAM, Moon Jung AN, Jin Seok PARK, Hee Keun LEE, Sung Chan JO, Sang Wook HAN
  • Auto-refresh operation control circuit for reducing current consumption of semiconductor memory apparatus
    Patent number: 8194488
    Abstract: An auto-refresh operation control circuit for a semiconductor memory apparatus is activated according to a bank active signal for executing a refresh operation and terminates the refresh operation by receiving a precharge signal. The auto-refresh operation control circuit is configured to prevent an over-driving operation during an auto-refresh operation and to delay the enablement of the precharge signal. The auto-refresh operation control circuit also delays the enablement of the precharge signal during the auto-refresh operation more than a delay of the precharge signal during a self-refresh operation.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 5, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hee Hyun Han
  • AUTO-REFRESH OPERATION CONTROL CIRCUIT FOR REDUCING CURRENT CONSUMPTION OF SEMICONDUCTOR MEMORY APPARATUS
    Publication number: 20090279373
    Abstract: An auto-refresh operation control circuit for a semiconductor memory apparatus is activated according to a bank active signal for executing a refresh operation and terminates the refresh operation by receiving a precharge signal. The auto-refresh operation control circuit is configured to prevent an over-driving operation during an auto-refresh operation and to delay the enablement of the precharge signal. The auto-refresh operation control circuit also delays the enablement of the precharge signal during the auto-refresh operation more than a delay of the precharge signal during a self-refresh operation.
    Type: Application
    Filed: December 23, 2008
    Publication date: November 12, 2009
    Inventor: Hee Hyun HAN