1results about How to "Maintain physical properties" patented technology

The utility model discloses a kind of ultra-thin smart cards, including smart card;The upper end of the smart card is provided with a through-hole, the smart card is composed of chip, film layer, silica gel sheet, printing layer and protective layer, the film layer is attached on both sides of chip, the silica gel sheet is attached on the outside of film layer, the printing layer is attached on the outside of silica gel sheet, the protective layer is attached on the outside of printing layer.The silica gel sheet of the utility model has good flexibility and elasticity, is attached on the outside of film layer, can utilize its elastic buffer external impact force to smart card, reduce the damage caused to internal chip due to collision, extrusion etc., also make the whole smart card more flexible, meet the characteristic requirement of ultra-thin.