Transparent conductive films, articles, and methods

Abstract

Transparent conductive films, articles made from them, and methods of making them are disclosed. Some transparent conductive films include flexible glass substrates and conductive layers containing metal nanoparticles. Others include at least one layer with cell walls that contain metal nanorods or conductive nanowires. Still others include a substrate with a coating disposed on it, with the coating including conductive components and photopolymers. Such films are useful in such articles as electronic displays, touch screens, and the like.

1 . A transparent conductive film comprising:
 a flexible glass substrate; and   at least one conductive layer disposed on the flexible glass substrate,   wherein the at least one conductive substrate comprises at least one metal nanoparticle and the at least one conductive layer exhibits a total light transmission of at least about 80%.   
     
     
         2 . The transparent conductive film according to  claim 1 , wherein the at least one conductive layer further exhibits a surface resistivity less than about 150 ohms/sq. 
     
     
         3 . The transparent conductive film according to  claim 1 , wherein the flexible glass substrate has at least one of the following: (1) an average thickness less than about 500 μm, (2) an average thickness greater than about 10 μm and less than about 100 μm, (3) can achieve a radius of curvature greater than about 5 mm and less than about 50 cm without breaking, (4) can achieve a radius of curvature greater than about 10 mm an less than about 10 cm without breaking, or (5) comprises an ion-exchanged glass. 
     
     
         4 . The transparent conductive film according to  claim 1 , wherein the flexible glass substrate comprises at least one of a silicate glass, an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, or an alkali gallogermanate glass. 
     
     
         5 . The transparent conductive film according to  claim 1 , wherein the at least one metal nanoparticle comprises at least one metal nanowire, nanocube, nanorod, nanopyramid, or nanotube. 
     
     
         6 . The transparent conductive film according to  claim 1 , wherein the at least one metal nanoparticle comprises at least one nanowire. 
     
     
         7 . The transparent conductive film according to  claim 6 , wherein the at least one nanowire comprises at least one coinage metal or silver. 
     
     
         8 . The transparent conductive film according to  claim 1 , further comprising at least one layer disposed between the flexible glass substrate and the at least one conductive layer. 
     
     
         9 . An article comprising the transparent conductive film according to  claim 1 . 
     
     
         10 . A transparent conductive film comprising:
 a flexible glass substrate; and   at least one conductive layer disposed on the flexible glass substrate,   wherein the at least one conductive substrate comprises at least one metal nanowire and the at least one conductive layer exhibits a total light transmission of at least about 80%.   
     
     
         11 . The transparent conductive film according to  claim 10 , wherein the at least one conductive layer further exhibits a surface resistivity less than about 150 ohms/sq. 
     
     
         12 . The transparent conductive film according to  claim 10 , wherein the flexible glass substrate has at least one of the following: (1) an average thickness less than about 500 μm, (2) an average thickness greater than about 10 μm and less than about 100 μm, (3) can achieve a radius of curvature greater than about 5 mm and less than about 50 cm without breaking, (4) can achieve a radius of curvature greater than about 10 mm an less than about 10 cm without breaking, or (5) comprises an ion-exchanged glass. 
     
     
         13 . The transparent conductive film according to  claim 10 , wherein the flexible glass substrate comprises at least one of a silicate glass, an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, or an alkali gallogermanate glass. 
     
     
         14 . The transparent conductive film according to  claim 1 , wherein the at least one nanowire comprises at least one coinage metal or silver. 
     
     
         15 . The transparent conductive film according to  claim 14 , further comprising at least one layer disposed between the flexible glass substrate and the at least one conductive layer. 
     
     
         16 . An article comprising the transparent conductive film according to  claim 10 .