▎ 摘　　要

NOVELTY - Optical clear adhesive (OCA)opticaltransparent adhesive,comprises prepolymer,tackifying resin,photoinitiator and reactive diluent USE - The OCA optical transparent adhesive used in fully bonded OCA touch screen, which is used as an input device, which is simplest, convenient and natural human-computer interaction mode. ADVANTAGE - The OCA optical transparent glue has excellent adhesive property, chemical resistance and high transmittance, and can effectively reduce the blue light transmittances of the display screen. The fully jointed OCA touch screen avoids the uneven stress on the upper and lower surfaces of the polarizer caused by the large difference between PSA glue and OCA glue layer on the lower and upper sides of polarizer of the existing technology. Compared with the conventional technology, the full-adhered OCA touch besides it can effectively reduces screen blue light transparency, also saves OCA tape manufacturing process and OCA adhesive layer of a sheet of peeling film, reduces the bonding times, avoids the problem of uneven stress caused by large thickness difference of the adhesive layer on two sides of the full joint polarizer, DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) OCA touch screen comprises OCA optical clear adhesive,OCA touch screen comprises a touch screen, an OCA optical clear adhesive layer and a release film, the OCA optical clear adhesive layer is attached to the lower surface of the touch screen, the release film is attached to the lower surface of the OCA optical clear adhesive layer, and the OCA optical clear adhesive layer, the touch screen and the release film are the same in size. (2) preparation method-adhered OCA touch screen,involves mixing graphene oxide, prepolymer, tackifying resin, photoinitiator and active diluent, coating mixture on the lower surface of the touch screen, and carrying out UV (ultraviolet) light curing to obtain an OCA (optically clear adhesive) layer,and attaching release film to the lower surface of OCA optical transparent layer to obtain full-lamination OCA touch screen.The thickness of OCA optical transparent adhesive layer is 50-250 mum. The illumination intensity is 50-200 mW/cm2And one or two mixed UV light with the wavelength of 254nm and 365nm is/are cured for 20-180 s. DESCRIPTION OF DRAWING(S) - The drawing shows full-attached OCA touch screen structure schematic diagram. Touch screen (1) OCA transparent optical adhesive layer (2) Release film (3)