Quanli Lu

Title: Quanli Lu and Micro Speaker Innovation.

Introduction

Quanli Lu is an inventor associated with Alviso, California, and Fortemedia, Inc. His patent work includes a micro speaker design intended to improve sound pressure levels within selected frequency ranges.

Latest Patents

The available information identifies one patent associated with Lu: “Micro Speaker Structure Including Diaphragm with Locally Thinner Regions and Method for Forming the Same.” The invention describes a substrate with a hollow chamber covered by a diaphragm. Etching patterns recessed into the diaphragm create locally thinner regions intended to increase sound pressure levels at particular frequencies. A coil is embedded in the diaphragm, while a carrier board and permanent magnetic element are arranged beneath it, with the magnetic element positioned in the hollow chamber.

Career Highlights

Lu’s listed patent activity reflects work on micro-speaker structure and diaphragm design. The available information associates him with Fortemedia, Inc., a company working in audio technology. His record includes 1 patent.

Collaborations

Ya-Chun Chang is identified as Lu’s coworker. The available information does not specify whether Chang collaborated with him on the micro-speaker patent.

Conclusion

Quanli Lu’s listed invention focuses on using locally thinner diaphragm regions to shape a micro speaker’s sound output, highlighting a practical approach to acoustic design.