Electrowetting cells with high transmissivity fluids
US10810951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Oct 14, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/0427
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The examples relate to various implementations of an electrowetting cell and optical devices including the electrowetting cell. The electrowetting cell includes a conductive fluid and a non-conductive fluid having refractive indices that differ by at least 0.2. In an example, the fluids of the electrowetting cell are capable of providing at least 50% transmissivity to radiation in a preselected band within the x-ray, ultraviolet, visible, infrared, microwave, or radiowave spectrums after 1 hour at a temperature of 40° C. and/or after 1 hour of an exposure at an average illuminance of at least 80,000 lux. In another example, the non-conductive fluid is selected from a compound of Formula 1, 2, or 3: in which R1 to R9 and R11 to R16 are independently selected from H, a saturated or unsaturated, branched or linear C1 to C6 alkyl group, and a phenyl group; R and R10 are aromatic groups, optionally substituted by one or more heteroatoms selected from N, O, and Si, and, in Formula 1, R1 and R are optionally linked to one another so as to define a ring; and n is an integer from 1 to 5. The electrowetting cell may be coupled to an optical device, such as a light sensor or light emitting de…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.