Abstract: A foldable display stack for an electronic device comprising a covering structure comprising a first cover layer and a polarizing layer, a second cover layer, and a displaying structure arranged between the covering structure and the second cover layer. A first adhesive layer attaches the covering structure to the displaying structure. A second adhesive layer attaches the displaying structure to the second cover layer. The displaying structure comprises a plurality of layers and the neutral plane of the foldable display stack. The first cover layer is arranged at a first distance from the neutral plane, in a first direction perpendicular to the neutral plane. The second cover layer is arranged at a second distance from the neutral plane, in a second direction opposite to the first direction. The first distance and the second distance are equal.

Abstract: A foldable display stack for an electronic device comprising a covering structure comprising a first cover layer and a polarizing layer, a second cover layer, and a displaying structure arranged between the covering structure and the second cover layer. A first adhesive layer attaches the covering structure to the displaying structure. A second adhesive layer attaches the displaying structure to the second cover layer. The displaying structure comprises a plurality of layers and the neutral plane of the foldable display stack. The first cover layer is arranged at a first distance from the neutral plane, in a first direction perpendicular to the neutral plane. The second cover layer is arranged at a second distance from the neutral plane, in a second direction opposite to the first direction. The first distance and the second distance are equal.

Abstract: According to an aspect, there is provided an energy storage system for an elevator car of an elevator system, comprising an energy storage; an energy storage management system connected to the energy storage and configured to monitor a state of the energy storage. The energy storage management system is configured to communicate directly with a charging arrangement located in an elevator shaft via a first communication channel to start and stop charging of the energy storage via the charging arrangement. The energy storage management system is further configured to communicate with an elevator controller associated with the elevator car via a second communication channel.

Abstract: According to an aspect, there is provided a method for elevator call allocation in an elevator system. The method comprises receiving charge information associated with an energy storage of an elevator car from each of a plurality of elevator cars of the elevator system; receiving an elevator call to a floor providing a charging arrangement for the energy storages; and allocating the elevator call to an elevator car of the plurality of elevator cars at least partly based on the charge information received from each of the plurality of elevator cars.