Pressing apparatus, method of manufacturing display device, and electronic device

A method of manufacturing a display device, the method comprising:

• forming pads in a non-display area on a substrate;
• and
• electrically connecting the pads and a circuit board having a driver integrated circuit installed thereon,
• wherein the electrically connecting of the pads and the circuit board includes pressurizing a contact point between the circuit board and the pads using a pressing apparatus,
• wherein the pressing apparatus includes:
• a support bracket movable in at least one of a first direction and a second direction intersecting the first direction;
• a first housing disposed on an inner side of the support bracket, the first housing is slidable in the second direction;
• a first driving unit disposed in the support bracket, the first driving unit providing a driving force to the first housing;
• a second housing disposed on an inner side of the first housing, the second housing is slidable in a third direction intersecting the first direction and the second direction;
• a second driving unit disposed in the support bracket, the second driving unit providing a driving force to the second housing;
• a third driving unit disposed in the support bracket, the third driving unit generating a rotational force rotating about the third direction;
• and
• a compression head rotatable by the rotational force of the third driving unit, and
• wherein the second driving unit and the third driving unit are aligned on an imaginary line extending in the third direction.