Organic light emitting diode display having high resolution and method of manufacturing the same

A method of manufacturing an organic light emitting diode display device, comprising:

• preparing a substrate including a pixel portion and a peripheral portion;
• forming a pixel switching semiconductor layer and a driving semiconductor layer on the pixel portion and a peripheral switching semiconductor layer on the peripheral portion;
• forming a first gate insulating layer on the pixel switching semiconductor layer, the driving semiconductor layer, and the peripheral switching semiconductor layer;
• forming a peripheral switching gate electrode, a pixel switching gate electrode, and a driving gate electrode on the first gate insulating layer;
• forming a pixel switching low concentration doping region in the pixel switching semiconductor layer, a driving low concentration doping region in the driving semiconductor layer, and a peripheral switching low concentration doping region in the peripheral switching semiconductor layer by using a photosensitive layer formed on the pixel switching gate electrode, the driving gate electrode, and peripheral switching gate electrode as a mask;
• and
• forming a second gate insulating layer covering the peripheral switching gate electrode, the pixel switching gate electrode, and the driving gate electrode,
• a length of the peripheral switching low concentration doping region formed in the peripheral switching semiconductor layer being larger than a length of the pixel switching low concentration doping region and the driving low concentration doping region formed in the pixel switching semiconductor layer and the driving semiconductor layer, respectively.