An electronic device comprising: a display panel, a polarization layer disposed on one face of the display panel; an optically clear adhesive, OCA, layer disposed on the polarization layer; a transparent plate disposed on the optically clear adhesive layer; a light-transmissive member comprising a light-transmissive material; and an optical sensor disposed below the display panel, wherein the display panel includes: a first substrate; a second substrate; and a pixel layer disposed between the first substrate and the second substrate, the pixel layer including a first opening in at least a portion of the pixel layer overlapping the optical sensor; wherein the optical sensor is disposed below the second substrate and at least partially overlapping a predetermined area of the display panel corresponding to the first opening, wherein the polarization layer includes a second opening in at least a portion of the polarization layer overlapping the optical sensor, wherein the optically clear adhesive layer includes a third opening in at least a portion of the optically clear adhesive layer overlapping the optical sensor, and wherein the light-transmissive member is disposed in an area corresponding to the second opening and the third opening. a display panel, a polarization layer disposed on one face of the display panel; an optically clear adhesive, OCA, layer disposed on the polarization layer; a transparent plate disposed on the optically clear adhesive layer; a light-transmissive member comprising a light-transmissive material; and an optical sensor disposed below the display panel, wherein the display panel includes: a first substrate; a second substrate; and a pixel layer disposed between the first substrate and the second substrate, the pixel layer including a first opening in at least a portion of the pixel layer overlapping the optical sensor; wherein the optical sensor is disposed below the second substrate and at least partially overlapping a predetermined area of the display panel corresponding to the first opening, wherein the polarization layer includes a second opening in at least a portion of the polarization layer overlapping the optical sensor, wherein the optically clear adhesive layer includes a third opening in at least a portion of the optically clear adhesive layer overlapping the optical sensor, and wherein the light-transmissive member is disposed in an area corresponding to the second opening and the third opening. a first substrate; a second substrate; and a pixel layer disposed between the first substrate and the second substrate, the pixel layer including a first opening in at least a portion of the pixel layer overlapping the optical sensor; wherein the optical sensor is disposed below the second substrate and at least partially overlapping a predetermined area of the display panel corresponding to the first opening, wherein the polarization layer includes a second opening in at least a portion of the polarization layer overlapping the optical sensor, wherein the optically clear adhesive layer includes a third opening in at least a portion of the optically clear adhesive layer overlapping the optical sensor, and wherein the light-transmissive member is disposed in an area corresponding to the second opening and the third opening.