Method for manufacturing optical diaphragm for backlight module and optical diaphragm

The embodiment of the invention provides a method for manufacturing an optical diaphragm for a backlight module and the optical diaphragm. The method comprises the steps that parameters of an ultrashort pulse laser are set; the ultrashort pulse laser is guided to the first surface of a base plate made of a brittle material for being scanned in order to form a plurality of blind holes in the firstsurface of the base plate, and the brittle material optical diaphragm with the multiple blind holes is obtained. By means of the method for manufacturing the optical diaphragm for the backlight module, because the ultrashort pulse laser is adopted, namely a cool laser processing technology is adopted, the quality of the blind holes formed in the brittle material base plate can be significantly improved, and accordingly, the quality of the obtained optical diaphragm can be significantly improved. 本发明实施例提供了种制造背光模组用光学膜片的方法及种光学膜片，所述方法包括：设定超短脉冲激光的参数；将所述超短脉冲激光引导至由脆性材料制成的基板的第表面进行扫描，以在所述基板的第表面中形成多个盲孔，得到具有多个盲孔的脆性材料光学膜片。由于采用超短脉