A display device is provided. The display device includes a pixel-displaying region, including: at least two pixels including a plurality of sub-pixels; and a light-shielding layer including a matrix portion and an enlarged portion, wherein the enlarged portion is disposed at an intersection of two of the adjacent sub-pixels and is adjacent to the matrix portion; wherein the matrix portion defines the sub-pixels, and a total area of the sub-pixels is defined as a first area and a ratio of an area of the enlarged portion to the first area is about 1.5% to 6%.