A liquid crystal display device includes: a first substrate including a first light blocking region, wherein a plurality of transistors are formed in the first light blocking region; a second substrate facing the first substrate, the second substrate including a common electrode disposed thereon; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the first substrate includes: a data line disposed extending in a vertical direction; color filters, each of the color filters overlapping adjacent color filters to form a color filter overlapping portion in boundary regions of the color filters in a vertical direction; and a light blocking member disposed extending in a horizontal direction covering the first light blocking region, wherein the data line and the color filter overlapping portion are spaced apart from each other in a horizontal direction in a region where the light blocking member is formed.