FIG. 1 An illustration (a) of FIG. 1 is a plan view schematically showing a display device according to an embodiment, and an illustration (b) is an enlarged view of a portion A in the illustration (a).

FIG. 2 is a cross-sectional view taken along a cross-section BB, shown in the illustration (a) of FIG. 1, of a display element formed in a display region of the display device

FIG. 3 is an enlarged cross-sectional view of an electroluminescence (EL) layer illustrated in FIG.

FIG. 4 is a cross-sectional view of a frame region of the display device, the cross-sectional view being taken along a cross-section CC shown in the illustration (a) of FIG. 1.

FIG. 5 An illustration (a) of FIG. 5 is a cross-sectional view of an analysis element formed in the frame region of the display device, and an illustration (b) of FIG. 5 is a cross-sectional view of the analysis element during a defect analysis.

FIG. 6 is an enlarged cross-sectional view of an analysis EL layer illustrated in FIG. 5.

FIG. 7 is an enlarged view of the portion A in the illustration (h) of FIG. 1 with a sealing layer removed.