Company Filing History:
Years Active: 2016-2017
Title: The Innovations of Ernest Li
Introduction
Ernest Li is a prominent inventor based in Shanghai, China. He has made significant contributions to the field of semiconductor technology, particularly in the development of silicon-on-insulator (SOI) devices. With a total of 3 patents to his name, Li's work has garnered attention for its innovative approaches to improving radio frequency signal performance.
Latest Patents
Li's latest patents include a silicon-on-insulator radio frequency device and a silicon-on-insulator substrate. The silicon-on-insulator radio frequency device features a pit formed on the surface of a high resistivity silicon plate, which is close to a buried oxide layer. This pit can be filled with an insulating material to increase the equivalent surface resistance of the silicon plate. Alternatively, leaving the pit in a vacuum state or filled with air also enhances the surface resistance. This design effectively reduces eddy currents generated on the surface of the silicon plate, leading to decreased loss of the radio frequency signal and improved linearity.
Another notable patent is the SOI RF device and method for forming the same. This invention involves creating a trench that exposes part of the high resistivity silicon base in the SOI substrate. A non-doped polysilicon layer is then placed on the exposed silicon base, with a metal layer applied above it. The interaction between the metal layer and fixed charges in the buried oxide layer facilitates the formation of an inversion layer at the surface of the polysilicon layer. This innovation also reduces eddy currents and enhances the performance of the RF signal device.
Career Highlights
Ernest Li is currently employed at Shanghai Huahong Grace Semiconductor Manufacturing Corporation, where he continues to push the boundaries of semiconductor technology. His work has been instrumental in advancing the capabilities of silicon-on-insulator devices, making them more efficient and reliable for various applications.
Collaborations
Li collaborates with fellow inventor Daniel Xu, contributing to the innovative environment at their company. Their combined expertise fosters a culture of creativity and technological advancement.
Conclusion
Ernest Li's contributions to the field of semiconductor technology, particularly through his patents on silicon-on-insulator devices, highlight his role as a leading inventor in the industry. His work not only enhances the performance of radio frequency signals but also sets the stage for future innovations in the field.