A display device including: a display panel including a first substrate and a second substrate that are coupled to and face each other; a first polarizing plate attached to the second substrate of the display panel; a second polarizing plate attached to the first substrate of the display panel; and a side cover layer. The first polarizing plate has a first extended portion that extends outwardly beyond an end portion of the second substrate, and the second polarizing plate has a second extended portion that extends outwardly beyond an end portion of the first substrate. The side cover layer is between the first and second extended portions of the first and second polarizing plates and covers a first side surface of the first substrate and a second side surface of the second substrate that are near the first and second extended portions, respectively.