Display device and manufacturing method thereof

A display device comprising:

• a substrate;
• and
• a pixel disposed on the substrate and comprising:
• a first transistor including a first source electrode, a first drain electrode, a first gate electrode, and a first semiconductor member, the first gate electrode being disposed between the substrate and the first semiconductor member, the first semiconductor member including an oxide material, wherein the first source electrode and the first drain electrode respectively directly contact two opposite faces of the first semiconductor member;
• a second transistor electrically connected to the first transistor, including a second gate electrode, and including a second semiconductor member, the second semiconductor member being disposed between the substrate and the second gate electrode, wherein a material of the second semiconductor member is identical to the oxide material;
• a third transistor electrically connected to the first transistor and including a third semiconductor member, the third semiconductor member including silicon;
• and a light-emitting diode element electrically connected to at least one of the first transistor and the third transistor;
• and
• a storage capacitor electrically connected between the first gate electrode and the light-emitting diode element, wherein the storage capacitor is formed at a planar level between the first semiconductor member and the third semiconductor member, and wherein the planar level is parallel to a surface of the substrate.