Patent ID: 8758883

Claim:
A luminescent sheet comprising a transparent part, a luminescent part, and a see-through control layer, wherein the see-through control layer is provided over a partial portion of the luminescent sheet such that, in a plane view, the see-through control layer overlaps the luminescent part, and the size of the see-through control layer is as large as or larger than the luminescent part; the luminescent part comprises a 1 st transparent electrode layer, a luminescent layer and a 2 nd transparent electrode layer; the see-through control layer is sandwiched between the 1 st transparent electrode layer and the 2 nd transparent electrode layer; at least the luminescent layer and the see-through control layer, in that order, are formed in a matrix pattern, the order being from an illuminating face-side of the luminescent sheet to a non-illuminating face-side of the luminescent sheet; and the view of the area on the non-illuminating face-side of the luminescent sheet is less visible to a person viewing said luminescent sheet from the illuminating face thereof as compared to the view of the area on the illuminating face-side of the luminescent sheet as seen by a person viewing said luminescent sheet from the non-illuminating face thereof.