Electronic device

An electronic device comprising:

• a display panel of which a major surface is parallel to a plane defined by a first direction and a second direction crossing the first direction;
• a first printed circuit board arranged in the second direction with the display panel, and electrically connected to the display panel;
• a second printed circuit board disposed adjacent to a first side of the first printed circuit board opposed to a second side of the first printed circuit board adjacent to the display panel in the second direction;
• and
• a connection part including a connection cable configured to connect the first printed circuit board and the second printed circuit board,
• wherein the first printed circuit board includes
• a first substrate, and
• a plurality of terminals disposed on the first substrate to be electrically connected to the connection part and the display panel, and including signal pins, power pins, and test pins arranged in the first direction, and
• a width of the test pin in the first direction is greater than a width of the signal pin in the first direction, and smaller than a width of the power pin in the first direction.