Transparent display device

A transparent display device, comprising:

• a substrate including a non-transmissive area and a transmissive area, the non-transmissive area comprising a light emission area in which a light emitting element is disposed;
• a touch sensor disposed at the transmissive area of the substrate;
• a touch sensor line disposed at the non-transmissive area of the substrate, the touch sensor line extending in a first direction;
• a touch sensor connection line extending in a second direction intersecting the first direction;
• at least one power line disposed at the non-transmissive area of the substrate and configured to supply a first power source or a second power source to the light emitting element;
• a disconnected portion having an undercut region provided along an edge of the touch sensor electrode in the transmissive area;
• a plurality of inorganic insulating films disposed in the non-transmissive area over the substrate and including an inorganic material;
• a planarization film disposed in the non-transmissive area over the plurality of inorganic insulating films and including an organic material;
• and
• a cathode contact portion disposed at the transmissive area,
• wherein the light emitting element includes a first electrode, a light emitting layer, and a second electrode,
• wherein the touch sensor line overlaps at least a portion of the first electrode of the light emitting element,
• wherein the at least one power line is disposed in parallel with the touch sensor line in the first direction,
• wherein the touch sensor line overlaps the at least one power line,
• wherein the at least one power line includes a common power line and a pixel power line,
• wherein the cathode contact portion is configured to electrically connect the common power line and the second electrode of the light emitting element,
• wherein the second electrode of the light emitting element includes a cathode electrode disposed in the non-transmissive area and configured to form a portion of the light emitting element, and a touch sensor electrode disposed in the transmissive area and configured to form a portion of the touch sensor,
• wherein the cathode electrode and the touch sensor electrode are separated from each other by the disconnected portion, and
• wherein the undercut region of the disconnected portion is formed such that the planarization film protrudes more than the plurality of inorganic insulating films in the direction of the transmissive area.