With development of display technology, liquid crystal displays have become most commonly used display devices.
In the process of manufacturing a liquid crystal display, the cell process, as an important procedure, comprises not only aligning and then assembling an array substrate and a color filter substrate, but also irradiating the frame glue filled between the array substrate and the color filter substrate by using ultraviolet light so as to solidify the glue. Since the electrical performance of the thin film transistor (TFT) provided on the array substrate will be affected after ultraviolet irradiation, those parts where the TFT and the like are located should be covered with an ultraviolet mask plate during the irradiation, but leaving the frame glue exposed.
An existing ultraviolet mask plate, comprising a glass substrate and a layer of shielding metal formed on the glass substrate, is also prepared by using a mask plate through a patterning process. Since the ultraviolet mask plate can be reused, the usage rate of the mask plate for manufacturing the ultraviolet mask plate is rather low. Hence, the cost of manufacturing the ultraviolet mask plate is relatively high in the prior art.