发明名称 |
OPTICAL DIFFUSING FILMS AND METHODS OF MAKING SAME |
摘要 |
Optical diffusing films are made by microreplication from a structured surface tool. The tool is made using a 2-part electroplating process, wherein a first electroplating procedure forms a first metal layer with a first major surface, and a second electroplating procedure forms a second metal layer on the first metal layer, the second metal layer having a second major surface with a smaller average roughness than that of the first major surface. The second major surface can function as the structured surface of the tool. A replica of this surface can then be made in a major surface of an optical film to provide light diffusing properties. The structured surface and/or its constituent structures can be characterized in terms of various parameters such as optical haze, optical clarity, Fourier power spectra of the topography along orthogonal in-plane directions, ridge length per unit area, equivalent circular diameter (ECD), and/or aspect ratio. |
申请公布号 |
US2015293272(A1) |
申请公布日期 |
2015.10.15 |
申请号 |
US201314443407 |
申请日期 |
2013.11.19 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Pham Tri D.;Kong Steven H.;Zhang Haiyan;Aronson Joseph T.;Leaf Michael R.;Boyd Gary T.;Johnson Nicholas A.;Wang Qingbing |
分类号 |
G02B5/02;C25D5/16;C25D3/04;C25D5/12;B29C59/02;C25D3/38 |
主分类号 |
G02B5/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method of making a structured surface, comprising:
forming a first layer of a metal by electrodepositing the metal using a first electroplating process resulting in a first major surface of the first layer having a first average roughness; and forming a second layer of the metal on the first major surface of the first layer by electrodepositing the metal on the first major surface using a second electroplating process resulting in a second major surface of the second layer having a second average roughness smaller than the first average roughness. |
地址 |
Saint Paul MN US |