▎ 摘　　要

NOVELTY - Quantum dot film having long service life comprises a first polyethylene terephthalate layer, a first water blocking layer, a quantum dot layer, a second water blocking layer and a second polyethylene terephthalate that are in contact in sequence. The first water blocking layer includes a ceramic layer A and a carbon functional layer A. The second water blocking layer includes a ceramic layer B and a carbon functional layer B. The ceramic layer A and the ceramic layer B are silicon oxide and/or silicon nitride. The carbon functional layer A and the carbon functional layer B each independently include graphene and/or carbon nanotubes. USE - The quantum dot film is useful in liquid crystal display (claimed). ADVANTAGE - The quantum dot film: utilizes the loose and flawed structure of carbon nanotubes and graphene, can store water vapor, can adjusts the water vapor on the PET water and gas barrier and store it after entering, and can prolongs the life of the quantum dot film, and can disperse the heat and not easily concentrate in a local area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing quantum dot film having long service life.