US Patent 11515507 Electroluminescent device having light transmitting region of non-through-hole structure

An electroluminescent device including a lower substrate; a lower structure including an inorganic multilayer; and an upper encapsulation structure, in which the lower structure includes a display region inside an outline of the inorganic multilayer, and a light transmitting region having a non-through-hole structure having at least a portion surrounded by the display region; the lower structure has an inorganic surface portion surrounding the display and light transmitting regions, the upper encapsulation structure has an inorganic lower surface forming an inorganic-inorganic encapsulation contact region; the electroluminescent device does not have a hole formed through both the lower substrate and the lower structure, a portion of the upper encapsulation structure corresponding to the light transmitting region is not removed, and the portion of the upper encapsulation structure is surrounded by the inorganic-inorganic encapsulation contact region; and a portion of the semi-transparent electrode corresponding to the light transmitting region is not present.