Ink containing organic material, display device using the same, and method of manufacturing display device

A display device comprising:

• a substrate;
• a pixel electrode disposed on the substrate;
• a bank layer disposed on the pixel electrode, the bank layer including an opening exposing at least part of the pixel electrode;
• and
• an intermediate layer overlapping the opening and comprising an organic material,
• wherein the intermediate layer is disposed on the pixel electrode at least partially exposed by the bank layer,
• the organic material has a molecular weight greater than about 500 and less than about 1,000,000, and
• the organic material comprises ink having a concentration and the molecular weight of the organic material satisfy:
• y
• <
• -
• 3.518
• *
• ln
• ⁡
• (
• x
• )
• +
• 4
• ⁢
• 5
• .59
• ,
• wherein y is the concentration of the organic material, and x is the molecular weight of the organic material.