A display device includes a first substrate, a second substrate, a space layer, and a protective film. The first substrate has a first surface, and the second substrate comprises a visible region and a non-visible region. The second substrate has a second surface, and the second surface is opposite to the first surface. The space layer includes a plurality of spacers and at least one space component. The spacers are located on the visible region, and the space component is located in the non-visible region. The protective film has water vapor barrier property. The protective film covers the space component, and forms at least one barrier wall. The barrier wall touches the first surface and the second surface.