This inventor holds 2 USPTO granted patents. Top assignee: Samsung Electronics Co., Ltd.. Active years: 2002-2006.
Company Filing History:
Years Active: 2002-2006
Title: Yeong-Tack Lee: Innovator in Flash Memory Technology
Introduction
Yeong-Tack Lee is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of flash memory technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and reliability of memory devices, which are crucial in modern electronics.
Latest Patents
One of Yeong-Tack Lee's latest patents is a flash memory device and program verification method. This invention aims to prevent misjudgments regarding whether flash memory cells are programmed. The device includes a program verification voltage generator that variably generates voltages for verifying the programming status of flash memory cells. Additionally, it features a word line level selector that transfers these voltages to the control gates of the memory cells. This innovative approach allows for complete programming of cells that are uncertain in their status by utilizing program verification voltage levels that adapt based on control signals.
Another notable patent is a bit line setup and discharge circuit for programming non-volatile memory. This invention involves a NAND EEPROM with a shielded bit line architecture that minimizes supply voltage and ground noise during bit line charging or discharging. The design incorporates a PMOS pull-up transistor and an NMOS pull-down transistor connected to a virtual power node. A control circuit manages the gate voltage of these transistors to limit peak current, ensuring efficient operation. The programming method includes a two-stage setup for bit lines, enhancing the reliability of data storage.
Career Highlights
Yeong-Tack Lee is currently employed at Samsung Electronics Co., Ltd., a leading global technology company. His work at Samsung has allowed him to be at the forefront of innovation in memory technology, contributing to the development of advanced electronic devices.
Collaborations
Throughout his career, Yeong-Tack Lee has collaborated with notable colleagues, including Kang-Deog Suh and Jin-wook Lee. These collaborations have fostered a creative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Yeong-Tack Lee's contributions to flash memory technology exemplify his innovative spirit and dedication to improving electronic devices. His patents reflect a deep understanding of memory systems and their critical role in modern technology.