Liquid crystal display and method of manufacturing the same
A display device includes a substrate, a thin film transistor disposed on the substrate, where the thin film transistor includes a drain electrode, a passivation layer disposed on the substrate covering the thin film transistor, a common electrode disposed on the passivation layer, where the common electrode receives a common voltage, a liquid crystal layer disposed in a microcavity layer on the common electrode, a roof layer disposed covering the liquid crystal layer, and a pixel electrode disposed on the roof layer, and a method of manufacturing the display device is provided.
1. A display device comprising:
a substrate;
a thin film transistor disposed on the substrate, wherein the thin film transistor comprises a drain electrode;
a passivation layer disposed on the substrate covering the thin film transistor;
a common electrode disposed on the passivation layer, wherein the common electrode receives a common voltage;
a liquid crystal layer disposed in a microcavity layer on the common electrode;
a roof layer disposed covering the liquid crystal layer; and
a pixel electrode disposed on the roof layer,
wherein
a first opening is defined in a portion of the roof layer, the first opening overlapping the liquid crystal layer in a direction substantially perpendicular to the substrate and being disposed above the liquid crystal layer at a pixel electrode region, in which the pixel electrode is disposed,
a second opening is defined in the roof layer at a drain electrode exposing region, through which the drain electrode of the thin film transistor is exposed, and
a connection opening, which connects the first opening and the second opening, is defined in the roof layer.
2. The display device of claim 1 , wherein
the pixel electrode is disposed in a region on the first opening, the second opening, and the connection opening.
3. The display device of claim 1 , wherein
a side of the common electrode is substantially aligned with a corresponding side of the microcavity layer.
4. The display device of claim 3 , wherein
the side of the common electrode extends in an extension direction of the common electrode.
5. The display device of claim 3 , wherein
the common electrode is not disposed on a drain electrode exposing region, through which the drain electrode of the thin film transistor is exposed.
6. The display device of claim 1 , further comprising:
a color filter disposed between the passivation layer and the common electrode; and
a light blocking member disposed between the passivation layer and the common electrode.
7. The display device of claim 1 , wherein
a portion of the pixel electrode is disposed in the first opening.