The present disclosure discloses a liquid crystal display panel, its method of manufacture and a liquid crystal display device. The panel includes an array substrate, a color filter substrate, a sealant connecting the two substrates, and a liquid crystal between the two substrates; a photoluminescent material is disposed on at least one of the array substrate and the color film substrate corresponding to the sealant, the photoluminescent material is used to emit a second light under the excitation of a first light, the second light is used to solidify the sealant, the photoluminescent material is at least partially disposed on a light passage of the first light. By the above methods, the present disclosure can solve the incomplete solidified problem of the sealant causing by the light is blocked and the sealant cannot be completely irradiated when the sealant of the existing display panel is solidified.