Display apparatus and method of manufacturing the same

1. A display apparatus comprising:

a display substrate comprising a first electrode member and a thin film transistor which is electrically connected to the first electrode member; and

a light-emitting diode on the display substrate and connected to the first electrode member of the display substrate,

wherein

the first electrode member comprises:

a first electrode, and

a protruding portion which protrudes from an upper surface of the first electrode, wherein a horizontal cross-sectional area of the protruding portion is smallest at a distal end of the protruding portion which is furthest from the first electrode, the light-emitting diode comprises:

a p-n diode,

a first contact electrode disposed at a side of the p-n diode and including a surface thereof exposed outside the light-emitting diode, and

an insulating member protruded from the p-n diode to extend further than the exposed surface of the first contact electrode, the insulating member defining both:

an opening which exposes the surface of the first contact electrode, and

a largest horizontal cross-sectional area of the opening at a distal end of the insulating member which is furthest from the exposed surface of the first contact electrode, and

a connection of the light-emitting diode to the display substrate comprises the protruding portion disposed in the largest horizontal cross-sectional area of the opening such that the smallest horizontal cross-sectional area of the protruding portion is in contact with the exposed surface of the first contact electrode.

2. The display apparatus of claim 1 , wherein

the insulating member defines an inclined inner side surface thereof which defines the opening and has a first gradient, and

the protruding portion defines an inclined outer side surface thereof which faces the inner side surface of the insulating member and has a second gradient.

3. The display apparatus of claim 2 , wherein the second gradient is equal to or less than the first gradient.

4. The display apparatus of claim 1 , wherein

the opening defined in the insulating member is recessed from a lower surface thereof, and

a maximum depth of the opening taken from the lower surface of the insulating member to the exposed surface of the first contact electrode is equal to or less than a maximum height of the protruding portion.

5. The display apparatus of claim 1 , wherein the display substrate further comprises a bank layer which defines a pixel region and a concave portion in which the light-emitting diode is accommodated,

further comprising a passivation layer surrounding the light-emitting diode accommodated in the concave portion and filling a space between the light-emitting diode and the bank layer.

6. The display apparatus of claim 5 , wherein

the light-emitting diode further comprises a second contact electrode disposed at a side of the p-n diode opposite to the side at which the first contact electrode is disposed, and

the second contact electrode of the light-emitting diode is exposed by the passivation layer surrounding the light-emitting diode.

7. The display apparatus of claim 6 , further comprising a second electrode disposed on the passivation layer and in contact with the second contact electrode exposed by the passivation layer.

8. The display apparatus of claim 1 , wherein

the display substrate further comprises:

a substrate,

the thin-film transistor on the substrate, and

a planarization layer between the thin-film transistor and the first electrode, and

the first electrode is electrically connected to the thin-film transistor.