Electrochromic element
US10151958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Mar 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrochromic element, includes: a pair of electrodes (3, 5); and an electrochromic layer (7) disposed between the pair of electrodes (3, 5), the electrochromic element being controlled in transmittance by pulse width modulation, in which: the electrochromic layer (7) contains at least one of two or more kinds of anode electrochromic materials, or two or more kinds of cathode electrochromic materials; and all of one of the anode electrochromic materials and the cathode electrochromic materials have an equal molecular length, or have a molecular length ratio of (large molecular length)/(small molecular length) of 1.4 or less, the electrochromic element being such that even when a driving environment temperature changes, its gradation can be controlled under a state in which its absorption spectrum is retained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.