Patent ID: 9196471
Filing Date: 2015-11-24
Classification: G01N,H01L

Abstract:
1. A scanner for scanning at least one wafer having an upper surface, a lower surface, and a peripheral edge, said scanner comprising: (a) a droplet cup with a droplet cup tip, said droplet cup tip having a concave tip well with an uppermost surface, said tip well configured to hold a droplet of testing reagent so that at least part of said droplet is above said uppermost surface of said droplet cup tip; and (b) wafer positioning and rotating structure configured to position said wafer above said droplet cup tip such that at least part of said wafer contacts said at least part of said droplet above said uppermost surface of said droplet cup tip; (c) wherein there is relative movement between said droplet and said wafer during a scanning process.