Light control device, management method for light control device, and production method for light control device
US12228834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2020 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Oct 10, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13347
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light control device including a light control sheet including a light control layer switchable between at least a first state and a second state by changing alignment of liquid crystal molecules by application of a drive voltage, and transparent electrode layers sandwiching the light control layer. The light control layer is transparent in the first state and turbid in the second state. The light control layer is in the second state when there is no application of the drive voltage. When the light control layer is in the second state, the light control sheet has a transmitted image definition of 70% or less, where the transmitted image definition is based on JIS K 7374:2007 with an optical comb width set to 0.125 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.