Method for forming conductive pattern and display device including conductive pattern
A conductive pattern forming method according to an embodiment includes: forming a first conductive pattern on a substrate; sequentially forming a release layer and a conductive layer on a transfer substrate that includes a mask; irradiating intense pulsed light (IPL) to the substrate where the first conductive pattern is formed; placing the transfer substrate on the substrate; transferring a portion of the conductive layer, corresponding to an opening of the mask, onto the substrate by irradiating the IPL to the transfer substrate to form a second conductive pattern on the substrate.
1. A conductive pattern forming method comprising:
sequentially forming a release layer and a conductive layer on one side of a transfer substrate, the release layer being disposed between the transfer substrate and the conductive layer;
placing a mask on the other side of the transfer substrate;
irradiating first intense pulsed light (IPL) to a first surface of a substrate without a mask overlapping the substrate to heat the substrate, the first IPL being irradiated directly to the substrate without any other layer disposed between the first IPL and the substrate;
placing the transfer substrate on the substrate which is irradiated and heated by the first IPL without forming an additional layer on the substrate; and
transferring a portion of the conductive layer, corresponding to an opening of the mask onto the substrate by irradiating second IPL to the transfer substrate to form a conductive pattern on the first surface of the substrate,
wherein no portion of the release layer is transferred onto the substrate during the transferring the portion of the conductive layer.
2. The conductive pattern forming method of claim 1 , wherein the conductive layer is formed by applying a metal paste or metal ink.
3. The conductive pattern forming method of claim 1 , wherein the conductive layer is a metal layer.
4. The conductive pattern forming method of claim 1 , wherein the release layer is a dynamic release layer.
5. The conductive pattern forming method of claim 1 , wherein the conductive pattern is the conductive layer corresponding to the opening of the mask.
6. The conductive pattern forming method of claim 1 , wherein the placing the transfer substrate onto the substrate comprises placing a surface of the transfer substrate, on which the conductive layer is located, to face toward the substrate.
7. The conductive pattern forming method of claim 1 , further comprising sintering the conductive pattern by irradiating third IPL to the substrate after the transferring the portion of the conductive layer onto the substrate.
8. The conductive pattern forming method of claim 1 , wherein the conductive pattern has a width of about 10 μm or less and a thickness of about 10% or more of the width.
9. The conductive pattern forming method of claim 1 , wherein the irradiating of the first intense pulsed light (IPL) to the substrate is performed before the placing of the transfer substrate on the substrate.