Rigid-Flex PCB Design for Wearable Tech

igid-Flex PCB Design for Smart Ring Wearable

I’m developing a compact smart ring device and need an experienced PCB engineer to design a rigid-flex PCB.

The design includes:

A flex PCB section (polyimide) that wraps around the inner circumference of a ring

Two gold-finished contact pads on the flex section that interface with the user’s finger

A rigid PCB section that connects to the flex and hosts electronics

Scope of work:

Design a single-piece rigid-flex PCB

Flex section with exposed ENIG pads (dimensions and spacing will be provided)

Proper coverlay usage and manufacturable rigid-flex stack-up

Clean routing of high-impedance analog signals from flex to rigid section

Mechanical alignment features and reliable rigid-flex transition

Requirements:

Proven experience with rigid-flex PCB layout

Strong understanding of analog signal integrity in compact wearables

Ability to deliver complete PCB layout and Gerbers

Project details and full technical context will be shared after NDA / direct engagement.