Film structure and preparation method thereof
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United States of America Patent
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May 30, 2023
Grant Date -
Oct 28, 2021
app pub date -
Jul 10, 2019
filing date -
May 14, 2019
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Abstract
A film structure and a preparation method thereof are provided. The film structure is provided with pore structures; the pore structure includes a gas space and a first protective layer, the first protective layer covers the gas space, and the gas space is filled with a gas. The pore structures with the gas are provided in the film structure, a refractive index of the pore structures is close to a refractive index of air, and a refractive index of the entire film structure is reduced by the influence of the pore structures.
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