Transparent conductive films, articles, and methods
View Patent ↗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 layer comprises at least one metal nanowire, the at least one conductive layer exhibits a surface resistivity less than about 150 ohms/sq, and the transparent conductive film exhibits a total light transmission of at least about 80%.
2. 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 and less than about 10 cm without breaking, or (5) comprises an ion-exchanged glass.
3. 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.
4. The transparent conductive film according to claim 1 , wherein the at least one metal nanowire comprises at least one of the following: at least one coinage metal or silver.
5. 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.
6. An article comprising:
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 layer comprises at least one metal nanowire, the at least one conductive layer exhibits a surface resistivity less than about 150 ohms/sq, and the transparent conductive film exhibits a total light transmission of at least about 80%.