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AssigneeDai Nippon Printing Co., Ltd.
InventorsTsuyoshi Chiba, Hiroshi Fujita, Yuki Aritsuka
Estimating the term…
A PDMS sheet that ensures good adhesion, handleability and stability to metal thin films or metal patterns of any desired shape, an optical element that is kept against de-bonding or exfoliation of metal patterns and has high reliability as well as good handleability and stability, and manufacturing methods thereof. The inventive optical element comprises a polydimethyl-siloxane sheet having a pattern-formation surface defined by one surface and a base surface defined by another surface, and a plurality of metal patterns positioned on the pattern-formation surface. Given a low-molecular-weight siloxane of a cyclic structure represented by [—Si(CH3)2O—]k where k is an integer of 3 to 20 inclusive, polydimethylsiloxane sheet comprises a structure where the content of the low-molecular-weight siloxane at the pattern-formation surface is more than that of the low-molecular-weight siloxane at the base surface, and a spacing between the adjacent metal patterns is variable by deformation of the polydimethylsiloxane sheet.
An optical element comprising:
An optical element comprising:
A polydimethylsiloxane sheet, comprising a structure that, given a low-molecular-weight siloxane of a cyclic structure represented by [—Si(CH3)2O—]k where k is an integer of 3 to 20 inclusive, has on at least one surface a first polydimethylsiloxane layer containing said low-molecular-weight siloxane, and on at least another surface a second polydimethylsiloxane layer containing said low-molecular-weight siloxane, said first polydimethylsiloxane layer containing said low-molecular-weight siloxane in an amount of parts by weight that is greater than a parts by weight of said low-molecular-weight polydimethylsiloxane contained in the second layer, wherein said first polydimethylsiloxane layer defines a work surface, and said second polydimethylsiloxane layer defines a base surface.
Dependencies are inferred from the claim text.