Display device with encapsulation layer with varying ratios of carbon to silicon and oxygen to silicon and method of fabricating the same

A method of fabricating a display device, comprising:

• preparing a organic light emitting device;
• depositing an inorganic material on the organic light emitting device to form a first inorganic encapsulation layer;
• forming an organic layer on the first inorganic encapsulation layer;
• and
• depositing an inorganic material on the organic layer to, form a second inorganic encapsulation layer,
• wherein forming the organic layer comprises:
• depositing an organic, material under a first oxygen partial pressure to form a first organic layer on the first inorganic encapsulation layer;
• and
• depositing an organic material under a second oxygen partial pressure that is less than the first oxygen partial pressure to form a second organic layer on the first organic layer,
• wherein the first organic layer has a greater content ratio of oxygen to silicon and a lower content ratio of carbon to silicon than the second organic layer.