# xMEMS

> xMEMS is a Santa Clara semiconductor company that builds sound and cooling out of silicon. Its piezoMEMS platform produces the world's first solid-state MEMS loudspeakers - all-silicon drivers with no moving voice coils - for earbuds, hearing aids, AI glasses and headphones, and the first 'fan-on-a-chip' active micro-cooling device that moves air inside phones, wearables and AI data-center optics. Founded in 2018, the company holds more than 300 patents and has raised roughly $129M across four rounds.

- **Founded:** 2018
- **Headquarters:** Santa Clara, California, United States
- **Founders:** Joseph Jiang (Co-founder & CEO), Jemm Yue Liang (Co-founder), Wei-Fu Hsu (Co-founder, Chief Legal Officer & General Counsel), Dr. Chiung C. Lo (Co-founder, Design)
- **Team size:** ~73 employees
- **Products:** Montara / Montara Pro / Montara Plus, Cowell, Cypress, Skyline DynamicVent, XMC-2400 uCooling (fan-on-a-chip)
- **Notable:** Created the world's first solid-state MEMS loudspeakers., Built the first all-silicon 'fan-on-a-chip' active micro-cooling device (1mm thin)., Powered the world's first hearing aid using MEMS speaker technology.

## Products & services

- **Montara / Montara Pro / Montara Plus** — Full-range solid-state MEMS drivers for IEMs, TWS earbuds and hearing aids; Montara Plus targets audiophile-grade full-range in-ear monitors, and Montara Pro integrates DynamicVent active venting.
- **Cowell** — The world's smallest solid-state MEMS micro speaker, used as a high-frequency tweeter alongside a dynamic-driver woofer; now in mass production.
- **Cypress** — Full-range solid-state MEMS speaker for ANC earbuds that generates sound via ultrasonic modulation-demodulation.
- **Skyline DynamicVent** — Solid-state active ambient venting device for TWS earbuds and hearing aids, controlling airflow to balance isolation and awareness.
- **XMC-2400 uCooling (fan-on-a-chip)** — The first all-silicon, solid-state active micro-cooling fan, just 1mm thin, for smartphones, AI glasses, SSDs and AI data-center optical transceivers.
- **Sycamore** — The world's first 1mm-thin near-field, open-air, full-range MEMS loudspeaker for smartwatches, XR glasses/goggles and open-fit earbuds.

## Achievements

- Created the world's first solid-state MEMS loudspeakers.
- Built the first all-silicon 'fan-on-a-chip' active micro-cooling device (1mm thin).
- Powered the world's first hearing aid using MEMS speaker technology.
- Introduced Sycamore, the world's first 1mm-thin near-field full-range MEMS loudspeaker.
- Holds more than 300 granted patents worldwide.
- Raised approximately $129M across four funding rounds.

## Latest updates

- **2025-10** — Closed a $21M Series D led by Boardman Bay Capital Management to scale mass production of piezoMEMS speakers and micro-cooling chips.
- **2025-04** — Extended the uCooling fan-on-a-chip to AI data centers, delivering first in-module active cooling for optical transceivers.
- **2025-01** — Gave first public demos of the Sycamore MEMS loudspeaker and the micro-cooling fan-on-a-chip at CES 2025.
- **2026-01** — Announced plans to showcase uCooling and Sycamore technologies for next-gen AI wearables at CES 2026.

## Links

- Website: https://xmems.com
- LinkedIn: https://www.linkedin.com/company/xmems/
- Twitter/X: https://twitter.com/xmemslabs
- YouTube: https://www.youtube.com/@xmemslabs

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Profile page: https://yespress.io/xmems
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Last updated: 2026-07-09