A display device, comprising: a display panel having a first area and a second area, the first area comprising a first pixel area and a first surrounding area surrounding the first pixel area, and the second area comprising a second pixel area, a transmission area, and a second surrounding area surrounding the second pixel area and the transmission area; an encapsulation structure on the display panel and comprising at least one inorganic layer (210, 230) and at least one organic layer; a color filter on the encapsulation structure and overlapping the first pixel area and the second pixel area; a black matrix on the encapsulation structure and overlapping the first surrounding area and the second surrounding area; and a functional module on a rear surface of the display panel and overlapping the second area, characterised in that the encapsulation structure comprises: a first inorganic layer; an organic layer on the first inorganic layer; a second inorganic layer on the organic layer; a first low refractive inorganic layer between the first inorganic layer and the organic layer and having a refractive index less than a refractive index of the first inorganic layer and greater than a refractive index of the organic layer; and a second low refractive inorganic layer between the organic layer and the second inorganic layer and having a refractive index greater than the refractive index of the organic layer and less than a refractive index of the second inorganic layer. a display panel having a first area and a second area, the first area comprising a first pixel area and a first surrounding area surrounding the first pixel area, and the second area comprising a second pixel area, a transmission area, and a second surrounding area surrounding the second pixel area and the transmission area; an encapsulation structure on the display panel and comprising at least one inorganic layer (210, 230) and at least one organic layer; a color filter on the encapsulation structure and overlapping the first pixel area and the second pixel area; a black matrix on the encapsulation structure and overlapping the first surrounding area and the second surrounding area; and a functional module on a rear surface of the display panel and overlapping the second area, characterised in that the encapsulation structure comprises: a first inorganic layer; an organic layer on the first inorganic layer; a second inorganic layer on the organic layer; a first low refractive inorganic layer between the first inorganic layer and the organic layer and having a refractive index less than a refractive index of the first inorganic layer and greater than a refractive index of the organic layer; and a second low refractive inorganic layer between the organic layer and the second inorganic layer and having a refractive index greater than the refractive index of the organic layer and less than a refractive index of the second inorganic layer. a first inorganic layer; an organic layer on the first inorganic layer; a second inorganic layer on the organic layer; a first low refractive inorganic layer between the first inorganic layer and the organic layer and having a refractive index less than a refractive index of the first inorganic layer and greater than a refractive index of the organic layer; and a second low refractive inorganic layer between the organic layer and the second inorganic layer and having a refractive index greater than the refractive index of the organic layer and less than a refractive index of the second inorganic layer.