Filter having a base and a support portion on the base

Abstract

A filter that includes: a filter base portion having a first main surface and a second main surface opposite to the first main surface, the filter base defining a plurality of through-holes communicating between the first main surface and the second main surface; and a support portion on the filter base portion, wherein the support portion includes: a main body portion on the first main surface and including a plurality of fixing portions in some of the plurality of through-holes; and a protruding portion protruding toward an outer side portion of the main body portion in a direction along the first main surface from a fixing portion located on a sidewall side of the main body portion among the plurality of fixing portions, and a thickness of the protruding portion is smaller than a thickness of the main body portion.

Dependencies are inferred from the claim text.