US Patent 8181387 Plant growth device

Disclosed is a rack for growing plants, including mounting means and a plurality of shelve means spaced vertically. Each of the plurality of shelve means is configured to slide generally horizontally in and out of said mounting means and includes a carrier element; and at least substantially planar light emitting element disposed under the carrier element and formed by at least one OLED. Positions of each of the plurality of shelve means are interchangeable relative to the mounting means.