Display device

A display device comprising:

• an upper substrate having gate lines and data lines, wherein each of a plurality of crossing portions of a corresponding gate line and data line is at a thin film transistor connected to the corresponding gate line and data line;
• a lower substrate on a lower surface of the upper substrate and exposing a part of the lower surface of the upper substrate;
• and
• a first reflection preventing layer overlapping the gate lines, and a second reflection preventing layer overlapping the data lines formed on the upper substrate so as to prevent external light from being reflected by the gate lines and the data lines,
• wherein the first reflection preventing layer has a pattern corresponding to the gate lines,
• wherein the second reflection preventing layer has a pattern corresponding to the data lines,
• wherein the gate lines directly contact the first reflection preventing layer,
• wherein, in a cross-sectional view, a width of each of separate portions of the first reflection preventing layer is equal to a width of the corresponding gate line, and a width of each of separate portions of the second reflection preventing layer is equal to a width of the corresponding data line, and
• wherein a gate insulating film is on both the first reflection preventing layer and the gate lines.