A liquid crystal display panel, a display device and a manufacturing method of a liquid crystal display panel. The liquid crystal display panel comprises: a color filter (2) located on an array substrate (1), and the color filter (2) comprises a black matrix (21) and a color filter layer (22) having different color sections, wherein the different color sections of the color filter layer (22) have quantum dots (QDs) of different sizes respectively, and the QDs of different sizes can be excited to generate light of corresponding colors; a protective layer (3) located on the color filter; a liquid crystal layer (4) provided on the protective layer (3); a transparent protective plate (5) provided on the liquid crystal layer (4).