Patent ID: 9490620
Filing Date: 2016-11-08
CPC Classification: G06F,G11B,H05K

Claim Text:
1. An electrical feed-through for use in a hard disk drive and configured to interface between a hermetically-sealed environment and an external environment, the feed-through comprising: a first diffusion control layer extending uninterrupted from an attachment region a distance along an external environment region; a first insulator layer on top of said first diffusion control layer, said first insulator layer extending from a first via positioned within a sealed region to a second via positioned within said external environment region outside of said sealed region; a conductor layer on top of said first insulator layer, said conductor layer electrically connecting said first via and said second via; a second insulator layer on top of said conductor layer; and a second diffusion control layer on top of said second insulator layer, said second diffusion control layer extending uninterrupted across a majority of a length of said electrical feed-through almost to said second via, wherein said first diffusion control layer, said first insulator layer, said second insulator layer, and said second diffusion control layer form a high aspect ratio diffusion channel between said sealed region and said external environment region.