Fingerprint-erasing cured film, method for manufacturing same, display and touch panel using same, and electronic device using these

Abstract

Fingerprint-erasing cured films for rendering fingerprint depositions on various surfaces quickly less visible or invisible; a manufacturing method therefor; a display or touch panel using the same; and electronic devices using these are provided. A liquid coating film including a solvent and a polymerizable resin composition curable by an activating energy beam is formed. In a state of the solvent being included within the film, the film is cured to form a cured film containing the solvent, preferably using a release material whose surface has undergone matte processing; and the solvent is evaporated in a subsequent drying step, whereby a cured film with a multitude of micropores on the surface is formed. Fingerprint soiling is rendered not readily visible or invisible. By using the cured film, there are obtained displays, touch panels, and electronic devices having fingerprint-erasability. To improve fingerprint-erasability, adding a water-absorbent compound to the film composition is preferable.

1 . A method for manufacturing a fingerprint-erasing cured film, characterized in that there is formed a film including at least a resin composition and a solvent, the resin composition being polymerizable by an activating energy beam; curing of said film is brought about in a state of the solvent being included within the film; and the solvent is subsequently dried. 
     
     
         2 . The method for manufacturing the fingerprint-erasing cured film according to  claim 1 , characterized in that 5 wt % or more of the solvent is included in the film. 
     
     
         3 . The method for manufacturing the fingerprint-erasing cured film according to  claim 1 , characterized in that the film is cured in a state of 5 wt % or more and 30 wt % or less of the solvent being included in the film. 
     
     
         4 . The method for manufacturing the fingerprint-erasing cured film according to  claim 1 , wherein there is formed a film including at least a resin composition and a solvent, the resin composition being polymerizable using an activating energy beam; and, in a state of said film being sandwiched between a substrate and a release material, and the solvent being included in said film, said film is irradiated with an activating energy and cured, whereby a cured film is formed on the substrate. 
     
     
         5 . The method for manufacturing the fingerprint-erasing cured film according to  claim 4 , characterized in that the release material is a release material having a surface with surface asperities formed by matte processing. 
     
     
         6 . The method for manufacturing the fingerprint-erasing cured film according to  claim 1 , characterized in that a water-absorbent compound is further added to the resin composition that is polymerizable using an activating energy beam. 
     
     
         7 . The method for manufacturing the fingerprint-erasing cured film according to  claim 6 , characterized in that the water-absorbent compound adds 0.4 to 25 wt % of the water-absorbent compound with respect to 100 wt % of the solid fraction. 
     
     
         8 . The method for manufacturing the fingerprint-erasing cured film according to  claim 6 , characterized in that the water-absorbent compound is one or two or more compounds selected from the group consisting of water-absorbent resins, oligomers containing carboxyl groups, ionic liquids, water-absorbent inorganic salts or an aqueous solution thereof, and silica gel microparticles. 
     
     
         9 . A fingerprint-erasing cured film, obtained by curing a resin polymerizable using an activating energy beam, the fingerprint-erasing cured film characterized in that there are formed a multitude of micropores communicating with an interior of the cured film from a surface of the cured film. 
     
     
         10 . A fingerprint-erasing cured film obtained by curing a resin polymerizable using an activating energy beam, the fingerprint-erasing cured film characterized in that a surface of the cured film is matte-processed, and there are formed a multitude of micropores communicating with an interior of the cured film from a surface of the cured film having the matte-processed surface. 
     
     
         11 . The fingerprint-erasing cured film according to claims  claim 9 , characterized in that 6 vol % or more of the micropores communicate with the interior of the cured film from the surface of the cured film. 
     
     
         12 . A display, characterized by having the fingerprint-erasing cured film according to  claim 9  formed thereon. 
     
     
         13 . A touch panel, characterized by having the fingerprint-erasing cured film according to  claim 9  formed thereon. 
     
     
         14 . An electronic device characterized in that a touch panel is installed in an input section, and the fingerprint-erasing cured film according to  claim 9  is formed on a surface of the touch panel. 
     
     
         15 . A mobile device, an item of furniture, a fitting, a glass, an eyeglass lens, or a mirror characterized by having the fingerprint-erasing cured film according to  claim 9  formed thereon. 
     
     
         16 . The method for manufacturing the fingerprint-erasing cured film according to  claim 2 , wherein there is formed a film including at least a resin composition and a solvent, the resin composition being polymerizable using an activating energy beam; and, in a state of said film being sandwiched between a substrate and a release material, and the solvent being included in said film, said film is irradiated with an activating energy and cured, whereby a cured film is formed on the substrate. 
     
     
         17 . The method for manufacturing the fingerprint-erasing cured film according to  claim 2 , characterized in that a water-absorbent compound is further added to the resin composition that is polymerizable using an activating energy beam. 
     
     
         18 . The method for manufacturing the fingerprint-erasing cured film according to  claim 3 , wherein there is formed a film including at least a resin composition and a solvent, the resin composition being polymerizable using an activating energy beam; and, in a state of said film being sandwiched between a substrate and a release material, and the solvent being included in said film, said film is irradiated with an activating energy and cured, whereby a cured film is formed on the substrate. 
     
     
         19 . The method for manufacturing the fingerprint-erasing cured film according to  claim 3 , characterized in that a water-absorbent compound is further added to the resin composition that is polymerizable using an activating energy beam. 
     
     
         20 . The method for manufacturing the fingerprint-erasing cured film according to  claim 4 , characterized in that a water-absorbent compound is further added to the resin composition that is polymerizable using an activating energy beam. 
     
     
         21 . The method for manufacturing the fingerprint-erasing cured film according to  claim 5 , characterized in that a water-absorbent compound is further added to the resin composition that is polymerizable using an activating energy beam. 
     
     
         22 . The fingerprint-erasing cured film according to  claim 10 , characterized in that 6 vol % or more of the micropores communicate with the interior of the cured film from the surface of the cured film. 
     
     
         23 . A display, characterized by having the fingerprint-erasing cured film according to  claim 10  formed thereon. 
     
     
         24 . A touch panel, characterized by having the fingerprint-erasing cured film according to  claim 10  formed thereon. 
     
     
         25 . An electronic device characterized in that a touch panel is installed in an input section, and the fingerprint-erasing cured film according to  claim 10  is formed on a surface of the touch panel. 
     
     
         26 . A mobile device, an item of furniture, a fitting, a glass, an eyeglass lens, or a mirror characterized by having the fingerprint-erasing cured film according to  claim 10  formed thereon. 
     
     
         27 . A display, characterized by having the fingerprint-erasing cured film according to  claim 11  formed thereon. 
     
     
         28 . A touch panel, characterized by having the fingerprint-erasing cured film according to  claim 11  formed thereon. 
     
     
         29 . An electronic device characterized in that a touch panel is installed in an input section, and the fingerprint-erasing cured film according to  claim 11  is formed on a surface of the touch panel. 
     
     
         30 . A mobile device, an item of furniture, a fitting, a glass, an eyeglass lens, or a mirror characterized by having the fingerprint-erasing cured film according to  claim 11  formed thereon.