Company Filing History:
Years Active: 2012-2015
Title: Innovations of Lijie Zhao in Heat-Assisted Magnetic Recording Technology
Introduction
Lijie Zhao is a prominent inventor based in Pleasanton, CA (US), known for his significant contributions to the field of heat-assisted magnetic recording (HAMR) technology. With a total of six patents to his name, Zhao has been instrumental in advancing the capabilities of HAMR read heads, which are crucial for improving data storage density in hard drives.
Latest Patents
Zhao's latest patents include a "Method of making an ultra-sharp tip mode converter for a HAMR head." This invention focuses on a mode converter designed to couple or bend light from an external laser diode into a tapered waveguide, ultimately enhancing the performance of the HAMR read head. The mode converter features an ultra-sharp tip, measuring less than 200 nm, which is essential for achieving the desired optical output. The manufacturing process involves a two-pattern transform method that ensures precise alignment of the tip portion edges.
Another notable patent is the "Method to make interferometric taper waveguide for HAMR light delivery." This method outlines the creation of an interferometric taper waveguide (I-TWG) with high critical dimension uniformity and minimal line edge roughness. The process includes several steps, such as defining a photoresist pattern using deep ultraviolet lithography and transferring this pattern through reactive ion etching (RIE) to form a temporary I-TWG pattern.
Career Highlights
Lijie Zhao is currently employed at Western Digital (Fremont), Inc., where he continues to innovate in the field of data storage technology. His work has significantly impacted the efficiency and effectiveness of HAMR systems, making him a key figure in the industry.
Collaborations
Zhao collaborates with talented individuals such as Hai Sun and Dujiang Wan, contributing to a dynamic team focused on pushing the boundaries of data storage technology.
Conclusion
Lijie Zhao's innovative work in HAMR technology exemplifies the critical role of inventors in advancing modern data storage solutions. His patents reflect a deep understanding of optical engineering and materials science, paving the way for future developments in the field.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.