US Patent 8115383 Electroluminescent area illumination with integrated mechanical switch

An electroluminescent lam including a lamp substrate; a first electrode formed over the lamp substrate device side, one or more layers having light-emitting material formed over the first electrode, and a second electrode formed over the one or more layers, a chiplet having a chiplet substrate separate and independent from the lamp substrate and adhered to the lamp substrate device side, one or more connection pads, a mechanical switch, and a control circuit for controlling the mechanical switch, the mechanical switch electrically connected to one or more connection pads and at least one connection pad electrically connected to the first or second electrode with one or more electrical connection(s); and an insulating and planarization layer formed over at least a portion of the chiplet and the electrical connections so that the chiplet is an embedded chiplet.