▎ 摘　　要

NOVELTY - Film structure comprises a hydrophobic layer, a diversion layer and a hydrophilic layer arranged in order of hydrophilicity from weak to strong, where the hydrophilic layer is arranged close to the side of the phototherapy device and the wristband device. The hydrophobic layer, the diversion layer and the hydrophilic layer are made of light-transmitting material or light-transmitting composite material. USE - The film structure is useful in screen body for phototherapy device, wear-resistant device and wrist belt device (all claimed). ADVANTAGE - The film structure: can make the sweat spontaneously move through the hydrophobic layer to the hydrophilic layer side, and guide the sweat from the layer close to the skin to the layer away from the skin, and thus achieves the effects of moisture absorption, perspiration and ventilation; and can avoid affecting the treatment and detection effects of the phototherapy device and the portable wear-resistant device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for screen body comprising light-emitting device i.e. organic LED composed of encapsulation layer, cathode, organic layer, anode layer and substrate arranged in sequence and the hydrophilic layer is disposed close to the substrate and film structure, where the film structure is disposed on the light-emitting side of the light-emitting device; the hydrophilic layer is disposed close to the light-emitting side of the light-emitting device and the hydrophobic layer is disposed away from the light emitting side of the light emitting device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of film structure useful in screen body for phototherapy device, wear-resistant device and wrist belt device.