Display device

A display device comprising:

• a substrate including a display area and a non-display area;
• a first metal pattern located on the substrate in the non-display area;
• a display element layer disposed on the substrate and including a plurality of display elements in the display area;
• a dam disposed between the display area and the first metal pattern;
• wherein the first metal pattern includes a first surface facing the substrate, a second surface opposite to the first surface and a side surface disposed between the first surface of the first metal pattern and the second surface of the first metal pattern,
• wherein the first metal pattern has a triple layer structure comprising a first layer, a second layer and a third layer,
• wherein the first layer, the second layer and the third layer are sequentially stacked,
• wherein the first layer and the third layer are formed of Ti,
• wherein the second layer is formed of Al,
• wherein the first metal pattern has a line shape in a plan view,
• wherein the first metal pattern is disposed along an edge of the non-display area, and
• wherein an end portion of the third layer is protruded outwardly more than a portion of an end portion of the second layer in a cross-sectional view,
• wherein the display element layer comprises:
• a thin-film transistor located on the substrate in the display area, the thin-film transistor including a semiconductor layer, a gate electrode, a source electrode and a drain electrode;
• an insulating layer located on the thin-film transistor;
• a pixel defining layer located on the insulating layer and comprising an opening;
• a first electrode located on the insulating layer, electrically connected to the thin-film transistor and at least partially exposed through the opening;
• a light emitting layer located on the first electrode;
• and
• a second electrode located on the light emitting layer,
• wherein the first metal pattern is made of the same material as the source electrode or the drain electrode of the thin-film transistor;
• and
• a second metal pattern adjacent to the first metal pattern on the substrate in the non-display area.

A display device comprising:

• a substrate including a display area and a non-display area;
• a layer including a first portion, a second portion and a third portion on the substrate;
• and
• a metal layer on the substrate in the non-display area;
• wherein the metal layer is arranged at least partially surrounding the display area,
• wherein the metal layer has at least one side surface in a cross-sectional view,
• wherein the at least one side surface of the metal layer includes a portion recessed inwardly,
• wherein the metal layer comprises a recess,
• wherein the second portion of the layer is disconnected with the first portion of the layer by the metal layer,
• wherein the second portion of the layer is disconnected with the third portion of the layer by the metal layer, and
• wherein the second portion of the layer is on the metal layer.