Organic light-emitting display apparatus and manufacturing method thereof

A method of manufacturing an organic light-emitting display apparatus, the method comprising:

• defining a plurality of pixels on a substrate, wherein each pixel comprises:
• a first region comprising a light-emitting region which emits light;
• and
• a second region comprising a transmission region, which transmits external light;
• providing a plurality of first electrodes in the pixels, respectively, wherein each first electrode is disposed in the first region of a corresponding pixel;
• providing an organic emission layer to cover the first electrodes;
• providing a first auxiliary layer on the organic emission layer in the second region and to expose the first region;
• providing a second electrode in the first region by depositing a metal for forming the second electrode on the organic emission layer;
• providing a second auxiliary layer to cover the second electrode in the first region and the second region, and to expose a third region which is defined between the pixels;
• and
• providing a third electrode in the third region to be in contact with the second electrode by depositing a metal for forming the third electrode on the second electrode.