Device for the regulation of light transmission

A window apparatus comprising:

• a window and a switchable device for regulation of light transmission,
• wherein said switchable device comprises:
• a stack of layers which comprises a first substrate layer, a second substrate layer, a switching layer positioned between the first substrate layer and the second substrate layer wherein said switching layer comprises at least two separated compartments, a first conductive layer which is positioned between the switching layer and the first substrate layer, and a second conductive layer which is positioned between the switching layer and the second substrate layer, wherein said at least two separated compartments of said switching layer comprise a first compartment and a second compartment,
• where each of the separated compartments of the switching layer comprises a material which changes light transmissivity upon application of a voltage, and the first compartment comprises a different composition of a switching layer material than the second compartment,
• wherein the material in each of the compartments of the switching layer is, in each case independently, a liquid crystal switching layer material, and wherein the switching layer material of each compartment comprises one or more dichroic dyes dissolved in a liquid crystalline material,
• wherein the separated compartments are formed by surrounding solid borders and said second compartment is formed by a surrounding solid border within the compartment of said first compartment.