Patent ID: 9245765
Filing Date: 2016-01-26
CPC Classification: H01L,Y10T

Claim Text:
1. A semiconductor wafer that includes a plurality of vias, the semiconductor wafer comprising: a supporting peripheral rim that protrudes from a first side of the semiconductor wafer; a first dry film resist arranged on the first side of the semiconductor wafer within the supporting peripheral rim, wherein the first dry film resist is photo-structured to form a first opening on the first dry film resist so that a via of the plurality of vias remains revealed from the first dry film resist through the first opening, and wherein a diameter of the first opening is smaller than a diameter of the via revealed from the first dry film resist; and a removable second dry film resist arranged on the first dry film resist, wherein the removable second dry film resist is photo-structured to form a second opening on the removable second dry film resist and a diameter of the second opening is larger than the diameter of the via revealed from the first dry film resist.