Functional element with electrically controllable optical properties

A functional element having electrically controllable optical properties with a plurality of side edges at least comprising a first carrier film having a first flat electrode and a second carrier film having a second flat electrode and an active layer arranged flat between the first flat electrode and the second flat electrode, wherein

• a first bus bar and a second bus bar are arranged on at least one first side edge,
• the first carrier film has at least one first recess and the second carrier film has at least one second recess, and
• wherein
• the first bus bar is arranged on a surface of the second carrier film facing away from the second flat electrode and in a region of at least one second recess passes through the latter and contacts the first flat electrode electrically conductively,
• the second bus bar is arranged on the surface of the first carrier film facing away from the first flat electrode and in a region of at least one first recess passes through the latter and contacts the second flat electrode electrically conductively, and
• the first bus bar is divided into at least one first section and at least one second section, which can be controlled independently of one another and/or the at least one second bus bar is divided into at least one first section and at least one second section, which can be controlled independently of one another, and
• the first recesses and the second recesses are arranged alternatingly with respect to one another.