Display panel and display apparatus including the same

1. A display panel comprising:

a substrate;

a first electrode formed on the substrate;

a first insulation layer formed on the first electrode;

a gate electrode formed on the first insulation layer and having an inclined lateral plane;

a second insulation layer formed on the gate electrode and covering the inclined lateral plane;

an active layer formed on the second insulation layer corresponding to the inclined lateral plane and electrically connected to the first electrode; and

a second electrode electrically connected to the active layer;

wherein the inclined lateral plane has an angle of between 30 and 90 degrees relative to the surface of the substrate.

2. The display panel according to claim 1 , wherein the second electrode is located between the second insulation layer and the active layer.

3. The display panel according to claim 1 , wherein the active layer is located between the second insulation layer and the second electrode.

4. The display panel according to claim 1 , wherein the active layer is formed of indium gallium zinc oxide (IGZO) or indium zinc oxide (IZO).

5. The display panel according to claim 1 , further comprising a first via hole through the first insulation layer and the second insulation layer to expose the first electrode.

6. The display panel according to claim 1 , further comprising:

a third insulation layer formed on the second electrode and covering the active layer; and

a pixel electrode formed on the substrate and covering the third insulation layer;

wherein a second via hole penetrates through the third insulation layer to expose the second electrode, and the pixel electrode is electrically connected to the second electrode.

7. The display panel according to claim 1 , wherein the gate electrode comprises a first gate metal layer, a second gate metal layer, and a fourth insulation layer between the first gate metal layer and the second gate metal layer.

8. A liquid crystal display (LCD) apparatus comprising a thin-film transistor substrate, an opposing color filter substrate, and a liquid crystal layer between the thin-film transistor substrate and the color filter substrate, the thin-film transistor substrate comprising:

a substrate;

a first electrode formed on the substrate;

a first insulation layer formed on the first electrode;

a gate electrode formed on the first insulation layer and having an inclined lateral plane;

a second insulation layer formed on the gate electrode and covering the inclined lateral plane;

an active layer formed on the second insulation layer corresponding to the inclined lateral plane and electrically connected to the first electrode; and

a second electrode electrically connected to the active layer;

wherein the inclined lateral plane has an angle of between 30 and 90 degrees relative to the surface of the substrate.

9. A organic light-emitting diode (OLED) display apparatus comprising a thin-film transistor substrate, an opposing cover substrate, and an OLED layer between the thin-film transistor substrate and the cover substrate, the thin-film transistor substrate comprising:

a substrate;

a first electrode formed on the substrate;

a first insulation layer formed on the first electrode;

a gate electrode formed on the first insulation layer and having an inclined lateral plane;

a second insulation layer formed on the gate electrode and covering the inclined lateral plane;

an active layer formed on the second insulation layer corresponding to the inclined lateral plane and electrically connected to the first electrode; and

a second electrode electrically connected to the active layer;

wherein the inclined lateral plane has an angle of between 30 and 90 degrees relative to the surface of the substrate.