Jihwan Choi

Title: Innovations of Jihwan Choi

Introduction

Jihwan Choi is a prominent inventor based in San Mateo, California. He has made significant contributions to the field of memory devices, holding a total of 14 patents. His work focuses on enhancing device performance and efficiency in integrated circuits.

Latest Patents

One of Jihwan Choi's latest patents is titled "HTO offset for long effective, better device performance." This patent describes memory devices that feature an increased effective channel length and improved TPD characteristics. The design includes multiple memory cells on a semiconductor substrate, with bit line dielectrics positioned between the cells. The memory cell comprises a charge trapping dielectric stack, a poly gate, pocket implant regions, and bit lines. The innovative approach allows for the formation of bit lines through an implant process at higher energy levels and concentrations of dopants, effectively mitigating short channel roll-off issues.

Another notable patent is the "Wordline resistance reduction method and structure in an integrated circuit memory device." This patent outlines methods and structures aimed at reducing resistance in wordlines. The process involves forming multiple columns of polycrystalline silicon for the respective wordlines, along with core and periphery transistor junctions. A salicidation process is performed for both the periphery transistor junction and the columns of polycrystalline silicon, resulting in wordlines with low resistance.

Career Highlights

Jihwan Choi has worked with several notable companies throughout his career, including Spansion LLC and Cypress Semiconductor Corporation. His experience in these organizations has contributed to his expertise in memory device technology and innovation.

Collaborations

Some of Jihwan Choi's coworkers include Angela Tai Hui and Ning Cheng. Their collaboration has likely fostered a productive environment for innovation and development in their respective fields.

Conclusion

Jihwan Choi's contributions to memory device technology through his patents and career achievements highlight his role as a significant inventor in the industry. His innovative approaches continue to influence advancements in integrated circuits and memory devices.