Patent · US Active

Controlling transitions in optically switchable devices

US9412290B2 · kind B2 · utility

55Cited by
79References
31Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 28, 2013
Grant dateAug 9, 2016
Priority date—
Expiry dateApr 25, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/157
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Aspects of this disclosure concern controllers and control methods for applying a drive voltage to bus bars of optically switchable devices such as electrochromic devices. Such devices are often provided on windows such as architectural glass. In certain embodiments, the applied drive voltage is controlled in a manner that efficiently drives an optical transition over the entire surface of the electrochromic device. The drive voltage is controlled to account for differences in effective voltage experienced in regions between the bus bars and regions proximate the bus bars. Regions near the bus bars experience the highest effective voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.