This inventor holds 2 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1995-1998.
Company Filing History:
Years Active: 1995-1998
Title: Innovations of JaiHo Choi in Semiconductor Technology
Introduction
JaiHo Choi is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of capacitors for integrated circuits. With a total of 2 patents to his name, Choi's work has advanced the capabilities of semiconductor memory devices.
Latest Patents
Choi's latest patents focus on innovative capacitor designs for semiconductor integrated circuits. One of his patents describes a semiconductor integrated circuit apparatus that features a capacitor with a ferroelectric thin film. This film is formed after a MOS transistor is created on the substrate. The ferroelectric thin film, made from materials such as PbZrTiO.sub.3 or SrTiO.sub.3, is shaped into a columnar form. This design allows for electrodes to be positioned in direct contact with the side walls of the columnar ferroelectric thin film, while the top portion is removed. This configuration prevents the formation of an oxide on the interface between the electrode and the ferroelectric material, which can deteriorate relative permittivity. As a result, a large capacity can be achieved relative to the substrate area, enhancing the capacitance of the capacitor. The capacitor is designed for use in DRAM or FRAM memory cells, enabling high integration and processing speeds in semiconductor memory.
Career Highlights
JaiHo Choi is currently employed at Hitachi, Ltd., where he continues to innovate in the semiconductor field. His work has been instrumental in pushing the boundaries of memory technology, contributing to advancements that benefit various electronic applications.
Collaborations
Choi has collaborated with notable colleagues, including Katsuaki Saito and Michio Ohue. Their combined expertise has fostered a productive environment for innovation within their projects.
Conclusion
JaiHo Choi's contributions to semiconductor technology, particularly through his innovative capacitor designs, have positioned him as a key figure in the industry. His patents reflect a commitment to enhancing the performance and efficiency of semiconductor memory devices.