A display unit manufacturing system comprising: a panel conveyance route (120, 130) which includes an optical film attaching unit (121, 131) configured to attach an optical film (F1, F2) to a panel; an inspection unit which inspects whether the panel having the optical film (F1, F2) attached thereto is defective; a panel storing unit which stores the panel from which the optical film (F1, F2) is separated, based on an inspection result of the inspection unit; and a control unit which controls whether to input the panel stored in the panel storing unit to the panel conveyance route (120, 130), wherein the panel conveyance route (120, 130) includes: - a first panel conveyance route which includes a first optical film attaching unit configured to attach a first optical film to one surface of the panel; and - a second panel conveyance route which includes a second optical film attaching unit configured to attach a second optical film to the other surface of the panel, wherein the panel storing unit includes: - a first panel storing unit which stores the panel from which the first optical film is separated, and inputs the stored panel to the first panel conveyance route; and - a second panel storing unit which stores the panel from which the second optical film is separated, and inputs the stored panel to the second panel conveyance route. a panel conveyance route (120, 130) which includes an optical film attaching unit (121, 131) configured to attach an optical film (F1, F2) to a panel; an inspection unit which inspects whether the panel having the optical film (F1, F2) attached thereto is defective; a panel storing unit which stores the panel from which the optical film (F1, F2) is separated, based on an inspection result of the inspection unit; and a control unit which controls whether to input the panel stored in the panel storing unit to the panel conveyance route (120, 130), wherein the panel conveyance route (120, 130) includes: - a first panel conveyance route which includes a first optical film attaching unit configured to attach a first optical film to one surface of the panel; and - a second panel conveyance route which includes a second optical film attaching unit configured to attach a second optical film to the other surface of the panel, - a first panel conveyance route which includes a first optical film attaching unit configured to attach a first optical film to one surface of the panel; and - a second panel conveyance route which includes a second optical film attaching unit configured to attach a second optical film to the other surface of the panel, wherein the panel storing unit includes: - a first panel storing unit which stores the panel from which the first optical film is separated, and inputs the stored panel to the first panel conveyance route; and - a second panel storing unit which stores the panel from which the second optical film is separated, and inputs the stored panel to the second panel conveyance route. - a first panel storing unit which stores the panel from which the first optical film is separated, and inputs the stored panel to the first panel conveyance route; and - a second panel storing unit which stores the panel from which the second optical film is separated, and inputs the stored panel to the second panel conveyance route.