Anisotropic conductive film, method of manufacturing the same and display apparatus having the same

An anisotropic conductive film comprising:

• an insulating first thin film layer and concave portions defined therein;
• an insulating second thin film layer facing the insulating first thin film layer;
• conductive balls in the concave portions, between the insulating first and second thin film layers, and spaced apart from the insulating second thin film layer;
• and
• insulating balls disposed on and between the conductive balls, disposed between the insulating first and second thin film layers, and each having a diameter smaller than the conductive balls,
• wherein the insulating first thin film layer exposes a portion of the conductive balls to outside the anisotropic conductive film.

A display apparatus comprising:

• a display panel including a pad part;
• a driving chip including a bump corresponding to the pad part;
• and
• an anisotropic conductive film disposed between the pad part and the driving chip, and electrically connecting the pad part to the bump,
• wherein the anisotropic conductive film comprises:
• an insulating first thin film layer including concave portions;
• an insulating second thin film layer facing the insulating first thin film layer;
• conductive balls in the concave portions, between the insulating first and second thin film layers, and spaced apart from the insulating second thin film layer;
• and
• insulating balls disposed on and between the conductive balls, disposed between the insulating first and second thin film layers, and each having a diameter smaller than the conductive balls;
• wherein
• the insulating first thin film layer exposes the conductive balls disposed overlapping both the bump of the driving chip and the pad part of the display panel, to the pad part, and
• the conductive balls disposed overlapping both the bump of the driving chip and the pad part of the display panel directly contact both the bump and the pad part.