Display device and manufacturing method thereof

A method of manufacturing a display device, comprising:

• forming a first substrate in which a plurality of pixel circuits each having a thin film transistor are arranged on an insulating substrate in a matrix as a first step;
• forming an organic planarizing film made of an organic insulating material on the first substrate as a second step;
• forming an electrode which comes in contact with a part of a surface of the organic planarizing film opposite to the first substrate side as a third step;
• forming an inorganic bank that is made of an inorganic insulating material, covers an end of the electrode, and comes in contact with a part of a surface of the organic planarizing film opposite to the first substrate side as a fourth step;
• and
• forming an OLED layer that covers a side of the electrode and the inorganic bank opposite to a side that comes in contact with the organic planarizing film, and partially comes in contact with the organic planarizing film as a fifth step.