SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To reduce the number of photomasks used for manufacturing a transistor and for manufacturing a display device compared with the former.

SOLUTION: A display device is manufactured through three photolithography steps in total: one photolithography step for forming a gate electrode and forming an island-shaped semiconductor layer; one photolithography step for forming a planarization insulation layer and then forming a contact hole; and one photolithography step for forming a source electrode and a drain electrode and forming a pixel electrode.

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