Display device and manufacturing method thereof

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

• providing a base layer comprising a plurality of sub-pixels, each sub-pixel of the plurality of sub-pixels comprising an emission area and a non-emission area;
• and
• forming, on the base layer, a display element layer to emit light from the emission area of each sub-pixel,
• wherein the forming the display element layer comprises:
• forming a partition wall in the emission area of each sub-pixel, and simultaneously forming a bank in the non-emission area of each sub-pixel, the partition wall and the bank being in direct contact with each other;
• forming a first electrode and a second electrode spaced apart from each other on the partition wall;
• forming a first insulating layer to expose a portion of an upper surface of each of the first and the second electrodes;
• aligning a plurality of light emitting elements between the first and the second electrodes by respectively applying corresponding alignment voltages to the first and the second electrodes, each of the plurality of light emitting elements extending in a longitudinal direction;
• forming, on the plurality of light emitting elements, a second insulating layer to expose opposite ends of each of the plurality of light emitting elements;
• and
• forming a first contact electrode and a second contact electrode on the second insulating layer,
• wherein the partition wall comprises a partition wall portion extending in an extension direction different from the longitudinal direction such that the partition wall portion is overlapped with an interior of the sub-pixel, and
• wherein at least one partition wall is between light emitting elements of the plurality of light emitting elements that are adjacent to each other in the longitudinal direction within each sub-pixel.