Provided is a method of manufacturing a curved display device, wherein a tape automated bonding (TAB) tape, which includes a base film, a driving chip formed at an upper portion of the base film, a plurality of one-side outer leads formed to bond an output terminal of the driving chip and a terminal of a liquid crystal display (LCD) substrate by an outer lead bonding (OLB) method, and a plurality of the other-side outer leads formed to bond an input terminal of the driving chip and a terminal of a printed circuit board, is designed so that from the end of the OLB bonding part to the part at which the film begins to bend is greater than or equal to the longitudinal length (E) of the driving chip ((4F−D/2)≥E).