US Patent 8063400 Light-emitting apparatus

A plurality of light-emitting panel units in a large-area light-emitting apparatus are arranged to make joints between the light-emitting panel units unobtrusive. A display panel unit includes a flexible substrate having a flat portion having an extended portion formed on each side thereof, a light-emitting portion formed on one surface of the substrate to extend to the extended portion, and an electrode terminal formed at an end portion of the extended portion of the substrate. The extended portion of the substrate is curved together with the light-emitting portion to connect the light-emitting portions of adjacent light-emitting panel units.