By Shaune Reynolds, Staff Product Marketing Manager
HMI sensors have become ubiquitous in modern devices, ranging from simple watches to complex machinery. They have revolutionized the way we interact with technology by replacing mechanical buttons and keys with touchscreens and other sensing technologies. However, some devices still require mechanical buttons, which can add complexity and cost to the manufacturing and quality testing processes. Qorvo force sensors can sense even the slightest touch through materials up to two inches thick, simplifying manufacturing and reducing costs. Now, let's consider a specific application of these sensors: multi-function buttons (MFBs) in True Wireless Stereo (TWS) earbuds.
This case study highlights the challenges associated with traditional mechanical and capacitive MFBs and how MEMS force sensors can eliminate such challenges, resulting in simpler and more cost-effective manufacturing processes. The study also delves into the technicalities of MEMS force sensors, how they can sense micron and nanometer deflections in any material up to two inches thick, and how they can detect varying pressure levels to create unique functionality.