Patent ID: 8822995

Claim:
A method of manufacturing a display substrate, the method comprising: forming a first conductive pattern including a gate line, a first switching control electrode connected to the gate line and a first driving control electrode; forming a second conductive pattern including a data line extending in a first direction substantially perpendicular to the gate line extending in a second direction, a driving voltage line, a switching input electrode connected to the data line, a switching output electrode spaced apart from the switching output electrode, a driving input electrode connected to the driving voltage line, and a driving output electrode spaced apart from the driving input electrode; forming a switching active pattern and a driving active pattern, the switching active pattern comprising amorphous silicon is formed in a region corresponding to the switching control electrode, the driving active pattern comprising a metal oxide is formed in a region corresponding to the first driving control electrode; and forming a light-emitting element electrically connected to the driving output electrode, wherein the switching output electrode is electrically connected to the first driving control electrode, wherein the second conductive pattern is formed on a base substrate including a first conductive pattern, and wherein forming the driving active pattern comprises: forming a first active layer and a second active layer on the base substrate including the first conductive pattern, the first active layer comprising the metal oxide, the second active layer comprising the amorphous silicon; forming a photoresist pattern on the second active layer, the photoresist pattern including a first thickness portion corresponding to the switching control electrode, and a second thickness portion corresponding to the first driving control electrode is thinner than the first thickness portion; and patterning the first and second active layers using the photoresist pattern.