Embodiments of the present invention disclose a color filter substrate including: a base plate, and a black matrix layer and a barrier pad layer disposed stackedly in sequence on the base plate, the barrier pad layer including a plurality of barrier pads disposed on the same layer; wherein, an orthographic projection of a pattern of each barrier pad onto the base plate is located within a region where a pattern of the black matrix layer is located; and, a surface of each barrier pad is provided with an auxiliary functional layer for absorption or reflection of a light irradiated on the surface of each barrier pad. Correspondingly, embodiments of the present invention disclose a method for manufacturing a color filter substrate, an OLED display panel and a display apparatus.