The present invention relates to a black matrix mask, a method for manufacturing a black matrix, and an application thereof. The black matrix mask includes a light-shielding layer having a predetermined transmission rate and coated along an edge of a black matrix pattern of the black matrix mask. The present invention also provides methods for manufacturing a black matrix, a color filter, an array substrate, and a liquid crystal display device. The method for manufacturing the black matrix includes: Step 100: using the black matrix mask to subject a black matrix material layer on a base plate to exposure; Step 200: subjecting the exposed black matrix material layer to development; and Step 300: subjecting the developed black matrix material layer to baking to finally form a black matrix on the base plate. The black matrix mask and the methods for manufacturing a black matrix, a color filter, an array substrate, and a liquid crystal display devices according to the present invention increase the taper of the black matrix and help enhance the aperture ratio of products.
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