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US 7,094,452 B2Granted
Antireflective member and electronic equipment using same
AssigneeSanyo Electric Co., Ltd.
InventorsHiroshi Yamashita, Yoshiaki Maeno
Life of this patent
Estimating the term…
Abstract
An antireflective member with stability and a low reflectance at low cost may be provided by performing an antireflective treatment to a substrate in a molding process of the substrate. A roughened surface with a continuous pattern in a fine pyramidal shape is formed on a surface of a transparent substrate, the roughened surface is a diffraction surface with zeroth-order diffraction to visible light, and the pattern of the roughened surface is transferred from a mold at a transfer rate of not less than 70%.
Claims17
A method for forming an antireflective member comprising:
- forming, on a surface of a mold, a roughened surface in a continuous pattern of a fine pyramidal shape or a fine conical shape, wherein protrusions of the roughened surface formed on the surface of the mold have an aspect ratio of not less than 1.0;
- and
- transferring the pattern of the roughened surface from the mold to a surface of a transparent substrate at a transfer rate of not less than 70% by a 2P (photo-polymer) molding process to form the roughened surface in the continuous pattern of the fine pyramidal shape or the fine conical shape on the surface of the transparent substrate such that protrusions of the roughened surface formed on the transparent substrate have an aspect ratio of not less than 0.7,
- wherein a pitch of the continuous pattern of the roughened surface is between 100 nm and 300 nm, and the roughened surface is a diffraction surface with zeroth-order diffraction with respect to visible light.
1 more element
A method for forming electronic equipment comprising an optical element, the method comprising:
- forming, on a surface of a mold, a roughened surface in a continuous pattern of a fine pyramidal shape or a fine conical shape, wherein protrusions of the roughened surface formed on the surface of the mold have an aspect ratio of not less than 1.0;
- and
- transferring the pattern of the roughened surface from the mold to a surface of a transparent substrate of the optical element at a transfer rate of not less than 70% by a 2P (photo-polymer) molding process to form the roughened surface in the continuous pattern of the fine pyramidal shape or the fine conical shape on the surface of the transparent substrate such that protrusions of the roughened surface formed on the transparent substrate have an aspect ratio of not less than 0.7,
- wherein a pitch of the continuous pattern of the roughened surface is between 100 nm and 300 nm and the roughened surface is a diffraction surface with zeroth-order diffraction with respect to visible light.
1 more element
A method of forming an antireflective member, the method comprising:
- forming, on a surface of a mold, a roughened surface in a continuous pattern of a fine pyramidal shape or a fine conical shape, wherein protrusions of the roughened surface formed on the surface of the mold have an aspect ratio of not less than 1.0;
- and
- transferring the pattern of the roughened surface from the mold to a surface of a transparent substrate at a transfer rate of not less than 70% by a 2P molding process or an injection molding process, both using a resin, to form the roughened surface in the continuous pattern of the fine pyramidal shape or the fine conical shape on the surface of the transparent substrate such that protrusions of the roughened surface formed on the transparent substrate have an aspect ratio of not less than 0.7,
- wherein a pitch of the continuous pattern of the roughened surface is between 100 nm and 300 nm and the roughened surface is a diffraction surface with zeroth-order diffraction with respect to visible light.
1 more element
A method for forming electronic equipment comprising an optical element, the method comprising:
- forming, on a surface of a mold, a roughened surface in a continuous pattern of a fine pyramidal shape or a fine conical shape, wherein protrusions of the roughened surface formed on the surface of the mold have an aspect ratio of not less than 1.0;
- and
- transferring the pattern of the roughened surface from the mold to a surface of a transparent substrate of the optical element at a transfer rate of not less than 70% by a 2P molding process or an injection molding process, both using a resin, to form the roughened surface in the continuous pattern of the fine pyramidal shape or the fine conical shape on the surface of the transparent substrate such that protrusions of the roughened surface formed on the transparent substrate have an aspect ratio of not less than 0.7,
- wherein a pitch of the continuous pattern of the roughened surface is between 100 nm and 300 nm and the roughened surface is a diffraction surface with zeroth-order diffraction with respect to visible light.
1 more element
Dependencies are inferred from the claim text.