Double-layered transparent conductive film and manufacturing method thereof
A double-layered transparent conductive film includes: a first substrate; a first imprint adhesive layer formed on the first substrate, the first imprint adhesive layer defining a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh; a first conductive layer including conductive material filled in the first mesh-shaped groove; a tackifier layer formed on the first imprint adhesive layer and the first conductive layer; a second substrate formed on the tackifier layer; a second imprint adhesive layer formed on the second substrate, the second imprint adhesive layer defining a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and a second conductive layer including conductive material filled in the second mesh-shaped groove. During the lamination, no alignment accuracy is needed, such that the production efficiency is greatly improved. A method of manufacturing the double-layered transparent conductive film is also provided.
1. A double-layered transparent conductive film, comprising:
a first substrate;
a first imprint adhesive layer formed on the first substrate, the first imprint adhesive layer defining a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
a first conductive layer comprising conductive material filled in the first mesh-shaped groove;
a tackifier layer formed on the first imprint adhesive layer and the first conductive layer;
a second substrate formed on the tackifier layer;
a second imprint adhesive layer formed on the second substrate, the second imprint adhesive layer defining a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
a second conductive layer comprising conductive material filled in the second mesh-shaped groove;
a first ratio of a middle blank area in the regular mesh of the conductive layer to a total area of the conductive layer of the regular mesh is greater than 95%;
a second ratio of a middle blank area in the random mesh of the conductive layer to a total area of the conductive layer of the random mesh is greater than 95%.
2. The double-layered transparent conductive film according to claim 1 , wherein a cell of the random mesh is shaped as an irregular quadrilateral.
3. The double-layered transparent conductive film according to claim 1 , wherein a cell of the regular mesh is shaped as a rectangular.
4. The double-layered transparent conductive film according to claim 1 , wherein the random mesh is an irregular polygon mesh, the number of grid lines of the irregular polygon mesh having a slope in a range of (−1, 1) is greater than the number of grid lines having a slope in a range (−∞, −1) and (1, +∞);
or the number of grid lines of the irregular polygon mesh having a slope in a range of (−1, 1) is less than the number of grid lines having a slope in a range (−∞, −1) and (1, +∞).
5. The double-layered transparent conductive film according to claim 1 , wherein the regular mesh is a hexagonal mesh.
6. The double-layered transparent conductive film according to claim 1 , wherein the random mesh is an irregular polygon mesh, a grid line of the irregular polygon mesh is evenly-distributed, the grid line between two nodes forms an angle θ with a horizontal X axis, the angle θ is evenly-distributed, the uniform distribution refers to the statistic value θ of each of the random grids; then gathering statistics for a probability p i of the grid lines falling within each of angle intervals at a stepper angle 5°, thus obtaining p 1 , p 2 . . . p 36 in the 36 angle intervals within 0˜180°; p i satisfies that the standard deviation is less than 20% of an arithmetic mean.
7. A method of manufacturing a double-layered transparent conductive film, comprising the following steps:
coating an imprint adhesive on a surface of a first substrate to form a first imprint adhesive layer, pattern imprinting the first imprint adhesive layer to form a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
filling the first mesh-shaped groove with conductive material and sintered, thus obtaining a first conductive layer;
bonding a tackifier layer to the first conductive layer;
bonding a second substrate to the tackifier layer, coating an imprint adhesive on the surface far away from the tackifier layer of the second substrate to form a second imprint adhesive layer, pattern imprinting the second imprint adhesive layer to form a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
filling the second mesh-shaped groove with conductive material and sintered, thus obtaining a second conductive layer;
a first ratio of a middle blank area of the regular mesh of the conductive layer to a total area of the conductive layer of the regular mesh is greater than 95%;
a second ratio of a middle blank area of the random mesh of the conductive layer to a total area of the conductive layer of the random mesh is greater than 95%.
8. A double-layered transparent conductive film, comprising:
a substrate;
a first imprint adhesive layer formed on one surface of the substrate, the first imprint adhesive layer defining a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
a first conductive layer comprising conductive material filled in the first mesh-shaped groove;
a second imprint adhesive layer formed on the other surface of the substrate, the second imprint adhesive layer defining a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
a second conductive layer comprising conductive material filled in the second mesh-shaped groove;
a ratio of a middle blank area of the regular mesh of the conductive layer to a total area of the conductive layer of the regular mesh is greater than 96.2%.
9. A method of manufacturing a double-layered transparent conductive film, comprising the following steps:
coating an imprint adhesive on one surface of a substrate to form a first imprint adhesive layer, pattern imprinting the first imprint adhesive layer to form a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
filling the first mesh-shaped groove with conductive material and sintered, thus obtaining a first conductive layer;
coating an imprint adhesive on the other surface of the substrate to form a second imprint adhesive layer, pattern imprinting the second imprint adhesive layer to form a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
filling the second mesh-shaped groove with conductive material and sintered, thus obtaining a second conductive layer;
a ratio of a middle blank area of the regular mesh of the conductive layer to a total area of the conductive layer of the regular mesh is greater than 96.2%.
10. A double-layered transparent conductive film, comprising;
a substrate defining a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
a first conductive layer comprising conductive material filled in the first mesh-shaped groove, the first conductive layer with a transmittance in visible light greater than 86.6%;
an isolation layer disposed on the first conductive layer, the isolation layer defining a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
a second conductive layer comprising conductive material filled in the second mesh-shaped groove.
11. A method of manufacturing a double-layered transparent conductive film, comprising the following steps:
pattern imprinting a surface of a substrate to form a first mesh-shaped groove, the first mesh-shaped groove forming a first mesh;
filling the first mesh-shaped groove with conductive material and sintered, thus obtaining a first conductive layer, the first conductive layer with a transmittance in visible light greater than 86.6%;
coating a polymer on a surface of the first conductive layer to form an isolation layer; pattern imprinting the isolation layer to form a second mesh-shaped groove, the second mesh-shaped groove forming a second mesh, wherein one of the first mesh and the second mesh is a regular mesh, the other is a random mesh; and
filling the second mesh-shaped groove with conductive material and sintered, thus obtaining a second conductive layer.
12. The double-layered transparent conductive film according to claim 8 , wherein the random mesh is an irregular polygon mesh, the number of grid lines of the irregular polygon mesh having a slope in a range of (−1, 1) is greater than the number of grid lines having a slope in a range (−∞, −1) and (1, +∞).
13. The double-layered transparent conductive film according to claim 8 , wherein the random mesh is an irregular polygon mesh, the number of grid lines of the irregular polygon mesh having a slope in a range of (−1, 1) is less than the number of grid lines having a slope in a range (−∞, −1) and (1, +∞).