An organic light-emitting display device comprising: a substrate comprising an active area (A/A) and an inactive area (I/A) surrounding the active area (A/A); a first planarization layer (105-1) on circuit elements in the active area (A/A) and in the inactive area (I/A); a second planarization layer (105-2) on the first planarization layer (105-1); an organic light-emitting element on the second planarization layer (105-2) in the active area (A/A); a bank on the second planarization layer (105-2) so that it partially covers an anode of the organic light-emitting element ; and a spacer on the bank , an encapsulation layer covering the organic light-emitting element , the encapsulation layer comprising a first inorganic layer , a second inorganic layer and a first organic member between the first inorganic layer and the second inorganic layer ; a first structure spaced apart from the first planarization layer (105-1) in the inactive area (I/A) and including a first support layer made of the same material as at least one of the first planarization layer (105-1) and the second planarization layer (105-2); a first wall on the first support layer ; a second structure positioned at an outer periphery of the first structure in the inactive area (I/A) and including a second support layer made of the same material as at least one of first planarization layer (105-1) and the second planarization layer (105-2); a second wall on the second support layer ; and a third wall positioned at an inner side of the second wall on the second support layer , a second organic member positioned between the second wall and the third wall , wherein each of the first wall , the second wall and the third wall comprises a lower layer (152-1, 156-1, 154-1) made of the same material as the bank , and an upper layer (152-2, 156-2, 154-2) made of the same material as the spacer . a substrate comprising an active area (A/A) and an inactive area (I/A) surrounding the active area (A/A); a first planarization layer (105-1) on circuit elements in the active area (A/A) and in the inactive area (I/A); a second planarization layer (105-2) on the first planarization layer (105-1); an organic light-emitting element on the second planarization layer (105-2) in the active area (A/A); a bank on the second planarization layer (105-2) so that it partially covers an anode of the organic light-emitting element ; and a spacer on the bank , an encapsulation layer covering the organic light-emitting element , the encapsulation layer comprising a first inorganic layer , a second inorganic layer and a first organic member between the first inorganic layer and the second inorganic layer ; a first structure spaced apart from the first planarization layer (105-1) in the inactive area (I/A) and including a first support layer made of the same material as at least one of the first planarization layer (105-1) and the second planarization layer (105-2); a first wall on the first support layer ; a second structure positioned at an outer periphery of the first structure in the inactive area (I/A) and including a second support layer made of the same material as at least one of first planarization layer (105-1) and the second planarization layer (105-2); a second wall on the second support layer ; and a third wall positioned at an inner side of the second wall on the second support layer , a second organic member positioned between the second wall and the third wall , wherein each of the first wall , the second wall and the third wall comprises a lower layer (152-1, 156-1, 154-1) made of the same material as the bank , and an upper layer (152-2, 156-2, 154-2) made of the same material as the spacer . <EOS>