A display device comprising: a display panel comprising a through-hole in a non-display area, wherein said through-hole passes through said display panel in a vertical direction; a window glass on the display panel; a camera module that includes at least one lens; and a filling member in the through-hole and opposing the window glass, wherein the through-hole overlaps said camera module, and the filling member in the through-hole opposes the camera module, wherein the display panel comprises: a substrate, a pixel circuit unit on the substrate, wherein the through-hole passes through the substrate and the pixel circuit unit, characterized in that, the pixel circuit unit comprises a first hole formed around and connected to the through-hole, the substrate comprises: a first layer comprising a first depression which, when viewed from said vertical direction, overlaps with the first hole and is formed around the through-hole; a second layer between the first layer and the pixel circuit unit, which comprises a second hole formed around the through-hole connecting the first depression and the first hole 22), wherein the filling member is filled in the first hole, the second hole and the first depression, and wherein the horizontal width of the first depression is larger than the horizontal width of the second hole. a display panel comprising a through-hole in a non-display area, wherein said through-hole passes through said display panel in a vertical direction; a window glass on the display panel; a camera module that includes at least one lens; and a filling member in the through-hole and opposing the window glass, wherein the through-hole overlaps said camera module, and the filling member in the through-hole opposes the camera module, wherein the display panel comprises: a substrate, a pixel circuit unit on the substrate, wherein the through-hole passes through the substrate and the pixel circuit unit, characterized in that, the pixel circuit unit comprises a first hole formed around and connected to the through-hole, the substrate comprises: a first layer comprising a first depression which, when viewed from said vertical direction, overlaps with the first hole and is formed around the through-hole; a second layer between the first layer and the pixel circuit unit, which comprises a second hole formed around the through-hole connecting the first depression and the first hole 22), wherein the filling member is filled in the first hole, the second hole and the first depression, and wherein the horizontal width of the first depression is larger than the horizontal width of the second hole. a substrate, a pixel circuit unit on the substrate, wherein the through-hole passes through the substrate and the pixel circuit unit, characterized in that, the pixel circuit unit comprises a first hole formed around and connected to the through-hole, the substrate comprises: a first layer comprising a first depression which, when viewed from said vertical direction, overlaps with the first hole and is formed around the through-hole; a second layer between the first layer and the pixel circuit unit, which comprises a second hole formed around the through-hole connecting the first depression and the first hole 22), wherein the filling member is filled in the first hole, the second hole and the first depression, and wherein the horizontal width of the first depression is larger than the horizontal width of the second hole. a first layer comprising a first depression which, when viewed from said vertical direction, overlaps with the first hole and is formed around the through-hole; a second layer between the first layer and the pixel circuit unit, which comprises a second hole formed around the through-hole connecting the first depression and the first hole 22), wherein the filling member is filled in the first hole, the second hole and the first depression, and wherein the horizontal width of the first depression is larger than the horizontal width of the second hole.