Neuralink, Corp.

Camilo A Diaz-Botia

Vanessa M Tolosa

Supin Chen

Dongjin Seo

Zachary M Tedoff

Yu Niu Huang

Felix Deku

Mark J Hettick

Disclosed is a sandwich assembly containing a thin film electrode array for use with high density electrodes. To minimize the volume required by the associated electronics, the electrode array and integrated circuits are sandwiched over a Printed Circuit Board (PCB), which may have other integrated circuits on an opposite side. Among other things, the disclosed apparatus, system, and method improve over previous systems by providing holes and vias that facilitate communication between a custom chip above the PCB and a field-programmable gate array (FPGA) below. The thin film electrode array can be fastened by bucking a pillar of stacked gold or other metal balls to rivet the thin film flex circuit. The system can include a thin film array having embedded wire traces and holes, a PCB having vias aligned with the holes, chips including an analog-to-digital converter (ADC) sandwiching the thin film, and solder connections from the chips through the holes to the vias.

Sandwich assembly scheme for thin film electrode array and integrated circuits on both sides of printed circuit board (PCB) and method of manufacture

Methods of manufacturing a biocompatible, hermetic feedthrough monolithically integrated with a biocompatible ribbon cable are described, as well as the resulting devices themselves. The hermetic feedthrough is created by placing glass over a mold of doped silicon or other material with a higher melting temperature than the glass and heating it to reflow the glass into the mold. The glass is then ground or otherwise removed to reveal a flat surface, and tiny pillars that were in the mold are isolated in the glass to form electrically conductive vias. The flat surface is used to cast a polymer and build up a ribbon cable, photolithographically or otherwise, that is monolithically attached to the vias.

Monolithic, biocompatible feedthrough for hermetically sealed electronics and methods of manufacture

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Monte Sereno, CA, United States of America

Camilo A Diaz-Botia