Organic light emitting display device including wall structure surrounding opening region

An organic light emitting display device, comprising:

• a display panel including:
• a substrate having an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, wherein a first groove is defined in the peripheral region and an opening is defined in the opening region;
• a light emitting structure in the display region on the substrate;
• and
• a first wall structure within the first groove of the substrate;
• and
• an optical module overlapping the opening,
• wherein an upper surface of the first wall structure is lower than an upper surface of the substrate.

An organic light emitting display device, comprising:

• a display panel including:
• a substrate having an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, wherein a first groove is defined in the peripheral region and an opening is defined in the opening region;
• a light emitting structure in the display region on the substrate;
• and
• a first wall structure within the first groove of the substrate;
• and
• an optical module overlapping the opening,
• wherein the substrate includes:
• a first organic layer;
• a first barrier layer disposed on the first organic layer;
• a second organic layer disposed on the first barrier layer, wherein a first opening is defined through the second organic layer in the peripheral region;
• and
• a second barrier layer disposed on the second organic layer, wherein a second opening overlapping the first opening is defined through the second barrier layer, and
• wherein the first opening and the second opening collectively define the first groove of the substrate.