Title:
COLOR-DEVELOPMENT STRUCTURE AND METHOD FOR MANUFACTURING COLOR-DEVELOPMENT STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/145339
Kind Code:
A1
Abstract:
This color-development structure is provided with: a corrugated layer having a corrugated structure that is equipped with a flat surface and protrusions disposed on said flat surface; and a dielectric layer that has a surface having a shape conforming to the corrugated structure, and that is formed of a single-layer thin film that emits reflected light that has been enhanced by interference. The protrusions are so structured as to have one or more steps above the flat surface. When viewed from a viewpoint opposing the surface of the corrugated layer, the protrusions are arranged so as to form a pattern that includes a set of multiple figurative elements each having a first length not more than a subwavelength along a first direction and a second length not less than the first length along a second direction that is orthogonal to the first direction. In the multiple figurative elements, the standard deviation of the second lengths is greater than that of the first lengths.
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Inventors:
YOSHIMURA MAI (JP)
KAWASHITA MASASHI (JP)
TANI TAKAYUKI (JP)
FUJIWARA MITSUO (JP)
SUZUKI NAOYA (JP)
YASU YUKI (JP)
KAWASHITA MASASHI (JP)
TANI TAKAYUKI (JP)
FUJIWARA MITSUO (JP)
SUZUKI NAOYA (JP)
YASU YUKI (JP)
Application Number:
PCT/JP2021/000844
Publication Date:
July 22, 2021
Filing Date:
January 13, 2021
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
B32B9/00; B29C59/02; B32B3/30; B32B9/04; B32B15/04; G02B5/18
Domestic Patent References:
| WO2019004229A1 | 2019-01-03 | |||
| WO2015037577A1 | 2015-03-19 |
Foreign References:
| JPH0763915A | 1995-03-10 | |||
| US20190099978A1 | 2019-04-04 |
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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