The present disclosure provides a display assembly, including: a display panel which includes: a screen portion, a chip providing portion, a bendable portion located between the screen portion and the chip providing portion, and a spacer portion connected between the bendable portion and the screen portion; a blocking layer on the screen portion; a cured adhesive layer located outside an area of the screen portion and including: a first portion covering the bendable portion and a second portion covering the spacer portion, the first portion and the second portion each having an thickness less than that of the blocking layer, the second portion is in contact with the blocking layer, and a surface of the second portion distal to the spacer portion is substantially flat. The present disclosure also provides a manufacturing method of the display assembly and a display device.