Structural coloration substrate, method for manufacturing structural coloration substrate, and security verification system using structural coloration substrate manufactured thereby
US12354430B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Oct 2, 2019 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Nov 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0977
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a structural coloration substrate, a method for manufacturing the structural coloration substrate, and a security verification system using the structural coloration substrate manufactured by the method, the method includes forming a first pattern displaying a first color on a base substrate, using a quantum dot, and stacking at least one structural coloration layer on the base substrate on which the first pattern is formed. The first color of the first pattern is changed and displayed, as the at least one structural coloration layer is stacked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.