Appearance-modifying device, and method for operating such a device
US8896905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2009 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Aug 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An appearance-modifying device for modifying the visual appearance of a surface covered thereby, the device comprising a first substrate, a second substrate, a spacer structure spacing apart the first and second substrates in such a way that a space between the first and second-substrates is divided into a plurality of cells wherein in each cell, an optically transparent fluid having a plurality of particles is dispersed therein, wherein each of the cells is configured such that a distribution state of the particles is controllable in a first distribution state and an appearance of the surface covered by the appearance-modifying device is determined by optical properties of the particles and a second distribution state in which the particles are concentrated onto one of a first particle concentration site and a second particle concentration site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.