Patent ID: 11879823
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 9:
10. The filter substrate according to claim 1, wherein the filter holes
are introduced by laser boring, and/or
form respectively a straight channel which extends perpendicular to the front-side and to the rear-side of the wafer, and/or
have a diameter of 1 μm to 4,000 μm, and/or
are disposed, at least in regions, with a density of 1 filter hole per cm2 to 1,000,000 filter holes per cm2, in the filter substrate, and/or
all have the same diameter and/or the same geometry.