An optical structure is provided. The optical structure includes a substrate, a light shielding layer, a light filter layer, and a first spacer. The light shielding layer is disposed on the substrate. The light shielding layer includes a first opening. The light filter layer includes a first portion and a second portion. The first portion and the second portion are arranged in a first direction. The first portion is disposed in the first opening. The second portion is connected to the first portion. The second portion is disposed on the light shielding layer. The second portion does not overlap the first opening. The first spacer is disposed on the second portion.