Touch panel and method for manufacturing the same
The present disclosure provides a touch panel, including a substrate, at least one sensing electrode layer, a wire layer, a first light-shielding layer and a second light-shielding layer. The substrate has a visible region and a non-visible region. The wire layer corresponds to the non-visible region, wherein the wire layer includes signal lines and at least one gap therebetween, the signal lines electrically connect the sensing electrode layer. The first light-shielding layer is disposed within the non-visible region and between the substrate and the wire layer, wherein the first light-shielding layer includes at least one recess and a position of the recess corresponds to a position of the gap. The second light-shielding layer corresponds to the recess, wherein an area covered by the second light-shielding layer is equal to or greater than an aperture of the recess. The present disclosure also provides a method for manufacturing a touch panel.
1. A method for manufacturing a touch panel, comprising:
providing a substrate having a visible region and a non-visible region disposed at at least one side of the visible region;
forming at least one sensing electrode layer in the visible region;
forming a wire layer in the non-visible region;
forming a first light-shielding layer in the non-visible region and between the substrate and the wire layer;
etching the wire layer to form a plurality of signal lines and at least one gap therebetween, and wherein the signal lines electrically connect the sensing electrode layer, wherein the etching of the wire layer further comprises etching the first light-shielding layer to form at least one recess in the first light-shielding layer, wherein a position of the recess is aligned to a position of the gap; and
forming a second light-shielding layer in the non-visible region, wherein an area covered by the second light-shielding layer is equal to or greater than an aperture of the recess.
2. The method for manufacturing the touch panel as claimed in claim 1 , wherein the first light-shielding layer and the second light-shielding layer are made of black photoresist, black printing ink and black resin.
3. The method for manufacturing the touch panel as claimed in claim 1 , wherein the second light-shielding layer fills the recess.
4. The method for manufacturing the touch panel as claimed in claim 1 , wherein the second light-shielding layer completely fills the recess and fills the gap.
5. The method for manufacturing the touch panel as claimed in claim 1 , wherein the second light-shielding layer completely fills the recess and the gap and overfills the gap to extend onto the wire layer.
6. The method for manufacturing the touch panel as claimed in claim 1 , wherein the wire layer is formed after the forming of the sensing electrode layer, and the sensing electrode layer further extends to the non-visible region and is disposed between the wire layer and the first light-shielding layer.
7. The method for manufacturing the touch panel as claimed in claim 1 , wherein the sensing electrode layer is formed after the forming of the wire layer, and the sensing electrode layer further extends to the non-visible region and is disposed over the wire layer.
8. The method for manufacturing the touch panel as claimed in claim 1 , wherein the etching of the wire layer companies a laser etching step.
9. The method for manufacturing the touch panel as claimed in claim 1 , wherein the forming of the second light-shielding layer companies a printing step or a coating step.