Light blocking member having variable transmittance, display panel including the same, and manufacturing method thereof

A method of manufacturing a display panel, comprising:

• forming signal lines and thin film transistors on a substrate;
• forming a plurality of color filters on the signal lines and the thin film transistors;
• forming a light blocking member comprising a thermochromic material on the signal lines and the thin film transistors;
• and
• forming a plurality of pixel electrodes on the plurality of color filters and the light blocking member,
• wherein the thermochromic material exhibits a black color at a temperature below a threshold temperature in a range from 78° C. to 82° C. and becomes transparent at a temperature above the threshold temperature.