Abstract: Disclosed is a method of producing a liquid crystal display unit, which is capable of shortening, at the time of adhesively bonding and fixing a transparent substrate to a liquid crystal panel, curing time by eliminating any heating treatment, thereby preventing degradation of the display quality and also improving the productivity. The production method is performed by bringing a transparent substrate into close-contact with a liquid crystal panel with a light-curing resin put therebetween, to form an assembly, and irradiating the assembly with ultraviolet light having a wavelength of 340 nm or more, to cure the light-curing resin for a short time. At this time, ultraviolet light having a wavelength ranging from 240 to 450 nm is emitted from an ultraviolet lamp, and an ultraviolet light component having a wavelength of less than 340 nm is shielded by a sharp cut filter.