A lighting apparatus includes a light-diffusive plate having opposing faces bounded by one or more sides. The plate has disruptions on a first face of the opposing faces and a first channel along at least a portion of a first side of the one or more sides. A first cover has first and second surfaces disposed over the first channel with the first surface facing the first side of the light-diffusive plate. A plurality of light-emitting diodes (LEDs) is disposed on the first surface of the first cover and within the first channel. The LEDs electrically coupled with wiring are integrated with the first cover.