Substrate for display device, display device, and touch panel

A display device, comprising:

• a base substrate;
• and
• a first electrode on the base substrate, the first electrode including a first light transmitting layer,
• wherein:
• the first light transmitting layer has a work function ranging from about 4.75 eV to about 4.9 eV,
• the first light transmitting layer includes a first transparent conductive oxide (TCO) layer and a first metal element doped in the first transparent conductive oxide layer, the first metal element being a group 2 metal element, the first metal element is included in the first light transmitting layer in an amount of about 0.01 atomic percent (atomic %) to about 5.00 atomic %, based on a total number of atoms in the first light transmitting layer, and
• the group 2 metal element includes Be or Mg.

A touch panel, comprising:

• a base substrate;
• a plurality of first sensor patterns on the base substrate and arranged along a direction;
• and
• a plurality of second sensor patterns on the base substrate, the plurality of second sensor patterns being insulated from and intersecting the first sensor pattern,
• wherein:
• the first sensor pattern or the second sensor pattern includes a first light transmitting layer,
• the first light transmitting layer includes a first transparent conductive oxide layer including:
• a first transparent conductive oxide (TCO) layer that includes two different metal oxides and has a work function ranging from about 4.75 eV to about 4.9 eV, and
• a first metal element doped in the first transparent conductive oxide layer layer in an amount of about 0.01 atomic percent (atomic %) to about 5.00 atomic %, based on a total number of atoms in the first transparent conductive oxide layer.