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US 12,757,638 B2Granted
Piezoelectric film, touch panel, and piezoelectric film manufacturing method
AssigneeKureha Corporation
InventorsMakoto Imaji, Kei Yamaguchi, Sho Hayakawa
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Abstract
Provided is a piezoelectric film capable of sufficiently exhibiting both piezoelectric properties and transparency. A piezoelectric film including, by stacking: a transparent piezoelectric base film made of a fluororesin; and a transparent coating layer having a thickness of 0.20 to 2.5 μm, wherein the transparent coating layer forms an interface with the transparent piezoelectric base film over an entire region overlapping the transparent piezoelectric base film.
Claims9
A piezoelectric film comprising, by stacking:
- a transparent piezoelectric base film made of a fluororesin;
- and
- a transparent coating layer having a thickness of 0.20 to 2.5 μm,
- wherein the transparent coating layer includes at least one resin selected from a melamine resin, a urethane resin, an alkyd resin, an acrylic resin, and a silicone resin, and is in direct contact with the transparent piezoelectric base film over an entire region overlapping the transparent piezoelectric base film, thereby forming an interface with the piezoelectric base film.
1 more element
Dependencies are inferred from the claim text.