Display device

An electronic device comprising:

• a display substrate having a first area and a second area on one side of the first area in a first direction, the display substrate comprising a circuit layer and a display layer on the first area of the circuit layer;
• an optical layer on the first area of a first surface of the display substrate;
• a plurality of circuit boards on the second area of the display substrate and spaced apart from the optical layer in the first direction;
• and
• a first sealing material on the second area of the display substrate to cover the circuit boards,
• wherein the circuit boards have:
• a first portion attached to the first surface of the display substrate,
• a second portion bent downwardly from the first surface and attached to an other surface of the display substrate, and
• a third portion bent between the first portion and the second portion,
• wherein the first sealing material protrudes from one side of the display substrate in the first direction to cover at least some of an outer surface of the first portion and the third portion of the circuit boards, is not between the circuit boards and the display substrate, and exposes an outer surface of the second portion, and
• wherein the first sealing material contacts an area of the display substrate between the display layer and the circuit board.