US Patent 9660011 Organic light emitting diode display device and manufacturing method thereof

Provided is an organic light emitting diode display device, including a pixel substrate including a pixel unit displaying an image and a peripheral unit surrounding the pixel unit; a first insulating layer covering the pixel substrate; a fanout line on the first insulating layer of the peripheral unit; a second insulating layer covering the first insulating layer and the fanout line; an etching prevention member on the second insulating layer of the peripheral unit and preventing overetching of the second insulating layer; a third insulating layer covering the second insulating layer; a peripheral potential voltage line on the third insulating layer of the peripheral unit and transferring a potential voltage; a passivation layer covering the third insulating layer; and an organic light emitting diode on the passivation layer of the pixel unit, in which the etching prevention member overlaps with the fanout line and the peripheral potential voltage line.