Film cutting method and cutting device, composite film, backlight module and display device

A film cutting device, comprising:

• a cutting mechanism including a cutting tool provided with viscous material;
• a feeding mechanism configured to convey a composite film that includes at least two laminated optical films to the cutting mechanism;
• a curing mechanism configured to, after the cutting tool cuts the composite film, cure the viscous material that is transferred from the cutting tool to a cutting end surface of the composite film;
• and
• a spraying mechanism;
• wherein the cutting mechanism further includes a cutting platform configured to support the composite film, and the cutting platform is below the cutting tool;
• wherein there is a plurality of cutting tools, the plurality of cutting tools are spaced apart from each other and located above the cutting platform, and correspond to a position of the cutting platform, and the plurality of cutting tools are arrangeable along a length direction and a width direction of the composite film;
• and
• wherein the spraying mechanism includes a plurality of nozzles corresponding to the plurality of the cutting tools, the plurality of nozzles are configured to spray the viscous material on the corresponding cutting tools, respectively.