Display apparatus and method for manufacturing display apparatus

1 . A method for manufacturing a display apparatus comprising:

preparing a carrier substrate and forming a sacrificial layer on a top surface of the carrier substrate, the sacrificial layer including a cover area and an exposure area located on at least one side of the cover area;

forming a first flexible material having a bottom surface in contact with the sacrificial layer on a top surface of the cover area of the sacrificial layer to expose the exposure area of the sacrificial layer;

removing the exposure area of the sacrificial layer, and

removing the carrier substrate from the first flexible material after removing the exposure area of the sacrificial layer,

wherein the forming of the sacrificial layer comprises alternately forming a first coating layer charged with a first electric charge and a second coating layer charged with a second electric charge having a different polarity from a polarity of the first electric charge.

2 . The method of claim 1 , wherein the preparing of the carrier substrate further comprises negatively charging the top surface of the carrier substrate.

3 . The method of claim 2 , wherein the negatively charging of the top surface of the carrier substrate is performed using an atmospheric-pressure plasma device.

4 . The method of claim 1 , wherein the first electric charge is a positive charge and the second electric charge is a negative charge.

5 . The method of claim 1 , wherein each of the first coating layer and the second coating layer includes graphene oxide (GO).

6 . The method of claim 1 , wherein the removing of the exposure area of the sacrificial layer is performed using an atmospheric-pressure plasma device or through washing with water.

7 . The method of claim 1 , wherein after removing the exposure area of the sacrificial layer, side surfaces of the sacrificial layer and the flexible material are aligned.

8 . The method of claim 7 , further comprising:

forming a first barrier layer on the first flexible material after removing the exposure area of the sacrificial layer.

9 . The method of claim 8 , further comprising: sequentially forming a second flexible material on the first barrier layer, a circuit driving layer on the second flexible material, a light emitting layer on the circuit driving layer, and an encapsulation layer on the light emitting layer.

10 . The method of claim 1 , wherein in the removing of the carrier substrate from the first flexible material, the sacrificial layer remains on the top surface of the carrier substrate and on a bottom surface of the first flexible material.

11 . The method of claim 10 , wherein a thickness of the sacrificial layer remaining on the top surface of the carrier substrate is smaller than a thickness of the sacrificial layer remaining on the bottom surface of the first flexible material.

12 . The method of claim 10 , further comprising:

removing the sacrificial layer remaining on the top surface of the carrier substrate after removing the carrier substrate from the first flexible material.

13 . The method of claim 12 , wherein the removing of the sacrificial layer remaining on the top surface of the carrier substrate is performed using an atmospheric-pressure plasma device or through washing with water.

14 . A display apparatus comprising:

a first flexible substrate;

a first barrier layer disposed on a top surface of the first flexible substrate;

a second flexible substrate disposed on the first barrier layer;

a circuit driving layer disposed on the second flexible substrate; and

a residue disposed on a bottom surface that is opposite to the top surface of the first flexible substrate,

wherein one side surface of the residue is aligned with one side surface of the first flexible substrate and

wherein the second flexible substrate is made of a same material as that constituting the first flexible substrate.