Segmented multilayer film with electrically controllable optical properties

A method for fabricating a multilayer film having electrically switchable optical properties, the method comprising:

• (A) providing a multilayer film having electrically controllable optical properties, the multilayer film comprising in the order specified and arranged one above the other in a planar manner:
• a) a first carrier film,
• b) a first planar electrode,
• c) an active layer comprising one or more layers in sequence, the active layer having electrically controllable optical properties,
• d) a second planar electrode,
• e) a second carrier film, and
• f) at least one insulation line laser machined through one of the first carrier film or second carrier film and into the first planar electrode and the active layer,
• (B) directing laser radiation through the first carrier film or second carrier film to the first planar electrode, the active layer and the second planar electrode, and
• (C) moving the laser radiation along at least one line to introduce the at least one insulation line into the first planar electrode and the active layer without the at least one insulation line extending into the first carrier film and the second carrier film, such that the first planar electrode is divided into at least two first planar electrode segments that are electrically insulated from one another and the active layer is divided into at least two active layer segments that are electrically insulated from one another.