A method of continuously manufacturing a display unit according to an exemplary embodiment of the present invention, which bonds sheet pieces of a polarizing film formed by cutting a roll-type optical film into sheet pieces having a predetermined sheet pieces to a panel to manufacture the display unit, continuously carries an optical film, detects a defect of the optical film, extracts a defective area based on information on the detected defect, forms a slit line in a horizontal direction with respect to a carrying direction of the optical film based on the defective area, determines whether the sheet piece of the polarizing film divided by the slit line is a defective sheet piece or a normal sheet piece, peels the sheet piece determined as a normal sheet piece from a release film, and bonds the normal sheet piece and a panel.