METAL PHOTO-ETCHING PRODUCT AND PRODUCTION METHOD THEREFOR

摘要

A metal photoetching product comprising at least one large cavity of minor axis W1S, major axis W1L and depth D1 in a surface of the product, wherein one or more cavities are included inside at least one of the at least one large cavity, and a smallest hole among the cavities has minor axis of W2S, major axis W2L, and depth D2; and the product satisfies the following dimensions, D1 + D2 = plate thickness D, 0.02 mm≤D≤2 mm, 0.4 x D < W1S < D, and 0.2 x D < W2S < 0.8 x D.