Patent ID: 10504731

Abstract:
The present invention provides a TFT substrate and a manufacturing method thereof. The manufacturing method of the TFT substrate according to the present invention includes additionally providing a transparent polypropylene film on an IGZO active layer to provide an effect of blocking UV light and thus preventing UV light from affecting stability of the IGZO active layer so as to improve stability of a TFT device without increasing the number of masks used. When the manufacturing method of the TFT substrate according to the present invention is applied to production of OLED display panels, the transparent polypropylene film may serve as a planarization layer so that the existing manufacturing process of OLED display panels does not need to be modified and manufacturing costs are not increased. Further, the TFT substrate so manufactured adopts a back channel etching type IGZO-TFT structure, which, as compared to a traditional etch stop type IGZO-TFT structure, requires fewer photoengraving operations and a lower manufacturing cost. The TFT substrate according to the present invention includes a transparent polypropylene film additionally provided on an IGZO active layer to provide an effect of blocking UV light so as to improve stability of a TFT device and manufacturing cost is low.