Color-changeable plastic
A form of a color-changeable plastic includes: a first conductive electrode layer; a color change layer disposed on the first conductive electrode layer, configured to cover a top surface of the first conductive electrode layer, and made of a substance that changes color depending on whether a voltage is applied; a second conductive electrode layer disposed on the color change laver, configured to cover a top surface and side surfaces of the color change layer, and configured to change the color of the color change layer with the first conductive electrode layer when the voltage is applied; and a conductive guide disposed at at least one of the first conductive electrode layer or the second conductive electrode layer, and configured to guide a movement of electrons and a color change direction of the color change layer when the voltage is applied.
1. A color-changeable plastic comprising:
a first conductive electrode layer;
a color change layer disposed on the first conductive electrode layer, configured to cover a top surface of the first conductive electrode layer, and made of a substance that changes color depending on whether a voltage is applied;
a second conductive electrode layer disposed on the color change layer, configured to cover a top surface and side surfaces of the color change layer, and configured to change the color of the color change layer with the first conductive electrode layer when the voltage is applied; and
a conductive guide disposed at at least one of the first conductive electrode layer or the second conductive electrode layer, and configured to guide a movement of electrons and a color change direction of the color change layer when the voltage is applied;
wherein the conductive guide comprises:
an edge portion surrounding edges of the first conductive electrode layer or the second conductive electrode layer; and
a guide pattern portion including a pattern inside the edge portion and configured to guide a color change direction of the color change layer;
wherein the guide pattern portion has first guide lines straightly crossing the inside of the edge portion and second guide lines straightly crossing the inside of the edge portion perpendicularly to the first guide lines, thereby forming a lattice pattern; and
wherein a plurality of first guide lines is spaced apart from each other and gradually increased in length and the second guide lines extend to connect the first guide lines, respectively, whereby the guide pattern is formed in a shape in which the lattice pattern gradually increases.
2. The color-changeable plastic of claim 1 , wherein the first conductive electrode layer and the second conductive electrode layer are composites of a silver nanowire and a polystyrene sulfonate.
3. The color-changeable plastic of claim 2 , wherein the composites of the first conductive electrode layer and the second conductive electrode layer further include divinyl sulfone (DVS) as a crosslink agent.
4. The color-changeable plastic of claim 1 , wherein the conductive guide is a silver (Ag) lattice having a linewidth of 15 μm to 300 μm.
5. The color-changeable plastic of claim 1 , wherein the guide pattern portion straightly extends and crosses an inside of the edge portion.
6. The color-changeable plastic of claim 5 , wherein the guide pattern portion includes a plurality of guide pattern portions, and each guide pattern portion of the plurality of the guide pattern portions is spaced apart from each other.
7. The color-changeable plastic of claim 1 , wherein the guide pattern portion includes:
a plurality of first guide lines, wherein each first guide line of the plurality of first guide lines are spaced apart from each other and gradually increase in length; and
the second guide lines are configured to extend and connect each first guide line of the plurality of first guide lines.
8. The color changeable lastic of claim 1 , comprising:
wherein the edge portion is formed in a circular shape, and
wherein the guide pattern portion includes:
guide rings radially arranged at predetermined intervals from a center of the edge portion; and
a plurality of connection lines connecting sequentially and gradually more guide rings in a circumferential direction from the edge portion,
wherein each connection line of the plurality of connection lines is spaced apart from each other in the circumferential direction of the edge portion and extends toward the center of the edge portion.