A display device, comprising: a display panel having a first area (A1) and a second area (A2), the first area (A1) comprising a first pixel area (PA1) and a first surrounding area (SA1) surrounding the first pixel area (PA1), and the second area (A2) comprising a second pixel area (PA2), a transmission area (TA), and a second surrounding area (SA2) surrounding the second pixel area (PA2) and the transmission area (TA); an encapsulation structure on the display panel and comprising at least one inorganic layer and at least one organic layer ; a color filter on the encapsulation structure and overlapping the first pixel area (PA1) and the second pixel area (PA2); a black matrix on the encapsulation structure and overlapping the first surrounding area (SA1) and the second surrounding area (SA2); and a functional module on a rear surface of the display panel and overlapping the second area (A2), 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 (A1) and a second area (A2), the first area (A1) comprising a first pixel area (PA1) and a first surrounding area (SA1) surrounding the first pixel area (PA1), and the second area (A2) comprising a second pixel area (PA2), a transmission area (TA), and a second surrounding area (SA2) surrounding the second pixel area (PA2) and the transmission area (TA); an encapsulation structure on the display panel and comprising at least one inorganic layer and at least one organic layer ; a color filter on the encapsulation structure and overlapping the first pixel area (PA1) and the second pixel area (PA2); a black matrix on the encapsulation structure and overlapping the first surrounding area (SA1) and the second surrounding area (SA2); and a functional module on a rear surface of the display panel and overlapping the second area (A2), 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 . <EOS>