Circuit device and manufacturing method thereof
View Patent ↗A circuit device is provided. The circuit device comprises a transparent substrate, a first transparent blocking layer, a first patterned conductive layer, and a second conductive layer. The transparent substrate has a first surface. The first transparent blocking layer is disposed on the first surface. The first patterned conductive layer is disposed on the first transparent blocking layer, and the second conductive layer is disposed on a side of the transparent substrate opposite to the first surface.
1. A manufacturing method of a circuit device with transparency, comprising:
providing a transparent substrate having a first surface and a second surface opposite to the first surface;
forming a first transparent blocking layer on the first surface;
forming a first conductive layer on the first transparent blocking layer, and forming a second conductive layer directly on the second surface, wherein forming a first conductive layer on the first transparent blocking layer and forming a second conductive layer directly on the second surface comprises:
coating the first conductive layer on a first transparent covering layer and coating the second conductive layer on a second transparent covering layer; and
disposing the first conductive layer along with the first transparent covering layer on the first transparent blocking layer, and disposing the second conductive layer along with the second transparent covering layer on the second surface, wherein the first conductive layer is disposed between the first transparent covering layer and the first transparent blocking layer, and the second conductive layer is disposed between the second transparent covering layer and the transparent substrate; and
patterning the first conductive layer by a first etching process to form a first patterned conductive layer, wherein patterning the first conductive layer by a first etching process to form a first patterned conductive layer comprises:
applying a laser beam to a first part of the first conductive layer and a first part of the transparent covering layer; and
removing the first part of the first conductive layer while the first part of the first transparent covering layer is not removed so that the first transparent covering layer covers the first patterned conductive layer.
2. The manufacturing method of claim 1 , further comprising patterning the second conductive layer by a second etching process to form a second patterned conductive layer.
3. The manufacturing method of claim 1 , wherein the first transparent blocking layer is a heat blocking layer, a laser beam blocking layer, or a combination of both, and wherein the first transparent blocking layer is for blocking a laser beam having a wavelength less than 390 nm and for allowing a visible light having a wavelength between 390 nm and 700 nm to pass through.
4. The manufacturing method of claim 1 , wherein a material of the first conductive layer and the second conductive layer comprises silver nanowires, gold nanowires, carbon nanotubes, or copper nanowires.
5. The manufacturing method of claim 2 , wherein the first etching process and the second etching process are a laser beam etching process.
6. The manufacturing method of claim 2 , wherein prior to the first etching process and the second etching process, the manufacturing method further comprises:
forming a first transparent covering layer, the first conductive layer disposed between the first transparent covering layer and the first transparent blocking layer; and
forming a second transparent covering layer, the second conductive layer disposed between the transparent substrate and the second transparent covering layer.