Electrochromic device with color correction
US11181798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Oct 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/022
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for color correction in an electrochromic device includes applying a stepped voltage profile to the electrochromic device in a high-transmission state to achieve a desired low-transmission state. Each step of the stepped voltage profile is at a step difference of about 0.01 volts to about 0.5 volts from an adjacent step with each successive step being at a varying voltage level and each of the steps is held for a time period from about 0.1 seconds to about 10 seconds. At the desired low-transmission state, the system and method include applying a reverse bias voltage from about 0.01 volts to about 0.5 volts for about 0.01 seconds to about 10 seconds to color correct the low-transmission state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.