A display panel and a manufacturing method therefor, and a display device. The display panel comprises: a plurality of sub-pixel areas, and a reset signal line pattern (905), an initialization signal line pattern (904) and a conductive connecting portion pattern (909) which are located in each sub-pixel area; the initialization signal line pattern (904) comprises a first main body portion (9041) and a first protruding portion (9042) which are coupled, the orthographic projection of the first main body portion (9041) on the substrate being located between the orthographic projection of the first protruding portion (9042) on the substrate and the orthographic projection of the reset signal line pattern (905) on the substrate; the orthographic projection of a first end portion (9091) of the conductive connecting portion pattern (909) on the substrate and the orthographic projection of the first protruding portion (9042) on the substrate have a first overlapping area (F1); in the first overlapping area (F1), the first end portion (9091) is coupled with the first protruding portion (9042), and a second end portion (9092) of the conductive connecting portion pattern (909) is coupled with a target coupling portion; and the orthographic projection of the reset signal line pattern (905) on the substrate is located between the orthographic projection of the target coupling portion on the substrate and the orthographic projection of the initialization signal line pattern (904) on the substrate.