CONTROLLED SWITCHING FOR ELECTROCHROMIC DEVICES

摘要

An electrochromic device is structured to selectively switch separate regions to separate transmission levels, based at least in part upon different respective sheet resistances of separate conductive layer regions. Sheet resistance of a conductive layer region can be associated with a transmission level to which a corresponding EC stack region can be switched, and a conductive layer with separate regions having separate sheet resistances causes corresponding EC stack regions to switch to different transmission levels. Sheet resistance in a conductive layer region can be adjusted via various processes, including introducing various chemical species into the conductive layer region to adjust a chemical species distribution in the region, where the chemical species distribution is associated with the sheet resistance of the region, heating conductive layer regions to induce oxidation of the region, adjusting the thickness of a conductive layer region, etc.

主权项

1. An apparatus, comprising:
an electrochromic device comprising at least two separate conductive layers, on opposite sides of an electrochromic (EC) stack; wherein the electrochromic device is structured to selectively switch each of at least two separate EC regions of the EC stack to at least one of at least two different transmission levels, based at least in part upon different respective sheet resistances in corresponding at least two separate conductive layer regions of at least one of the at least two separate conductive layers.