Display apparatus and method of manufacturing the same

A display apparatus, comprising:

• a base substrate;
• an active pattern disposed on the base substrate;
• a gate insulation layer disposed on the active pattern;
• a gate electrode disposed on the gate insulation layer and overlapping the active pattern;
• a first insulation layer disposed on the gate electrode and comprising silicon (Si), nitrogen (N), and hydrogen (H);
• a second insulation layer disposed on the first insulation layer;
• a storage electrode disposed between the first insulation layer and the second insulation layer and overlapping the gate electrode;
• and
• a source electrode and a drain electrode which are disposed on the second insulation layer and are electrically connected to the active pattern,
• wherein the first insulation layer has a total amount of hydrogen of about 5 atomic percent to about 30 atomic percent, Si—H bond in the first insulation layer is about 0.1 atomic percent to about 10 atomic percent, and the first insulation layer has a reflective index of about 1.884 to about 2.312.