Variable light transmittance element, and color filter and smart window for display device comprising same
US11927778B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2019 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Apr 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a variable light transmittance element including a variable light transmittance structure, wherein the variable light transmittance structure includes: a first electrode; a variable light transmittance layer made of a transparent semiconductor material in which metal nanoparticles are dispersed, and electrically connected to the first electrode; a second electrode; and an insulating layer interposed between the variable light transmittance layer and the second electrode, and also relates to a color filter for a display device and smart window including the same. The variable light transmittance element according to the present invention induces a change in the localized surface plasmon resonance (LSPR) state by applying a voltage to both ends of the variable light transmittance stack structure including the electrode/insulation layer/metal nanoparticle-containing transparent semiconductor layer, and thus the light transmittance and color of the metal nanoparticle-containing transparent semiconductor layer may be freely changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.