Touch Panel, Display Device and Manufacturing Method of Touch Panel

1 . A touch panel, comprising:

a substrate; and

at least one touch pad positioned on the substrate and having an uneven surface.

2 . The touch panel of claim 1 , wherein the touch pad contacts the substrate.

3 . The touch panel of claim 1 , wherein the touch pad comprises:

a plurality of first sub-touch pads arranged in a first direction;

a first connector connecting adjacent first sub-touch pads to each other;

a plurality of second sub-touch pads arranged in a second direction crossing the first direction;

a second connector positioned so as to correspond to the first connector and connecting adjacent second sub-touch pads to each other; and

an insulating layer positioned between the first connector and the second connector.

4 . The touch panel of claim 3 , wherein at least one of the first sub-touch pad, the first connector, the second sub-touch pad and the second connector has an uneven surface.

5 . The touch panel of claim 3 , wherein the second sub-touch pad is formed integrally with the second connector.

6 . The touch panel of claim 3 , wherein the first sub-touch pad and the second sub-touch pad are positioned on a same layer so as to contact the substrate.

7 . The touch panel of claim 3 , wherein at least one of the first sub-touch pad, the first connector, the second sub-touch pad and the second connector includes a light-transmissive conductive material.

8 . The touch panel of claim 1 , further comprising:

a protective layer positioned on the touch pad; and

a cover positioned on the protective layer.

9 . A display device, comprising a display unit for displaying an image, and a touch panel as recited in claim 8 , said touch panel being positioned on the display unit.

10 . A display device, comprising a display unit for displaying an image, and a touch panel as recited in claim 3 , said touch panel being positioned on the display unit.

11 . A display device, comprising a display unit for displaying an image, and a touch panel as recited in claim 1 , said touch panel being positioned on the display unit.

12 . A manufacturing method of a touch panel, comprising the steps of:

preparing a substrate; and

forming at least one touch pad having an uneven surface on the substrate.

13 . The method of claim 12 , wherein the step of forming said at least one touch pad is performed so that the touch pad contacts the substrate.

14 . The method of claim 12 , wherein the step of forming said at least one touch pad includes:

forming a first conductive layer on the substrate;

forming a plurality of first connectors having an island form by patterning the first conductive layer;

forming an insulating layer on the first connectors so as to expose both ends of the first connectors;

forming a second conductive layer on the substrate, the first connectors, and the insulating layer;

forming a plurality of first sub-touch pads arranged in a first direction, each first sub-touch pad being connected to one end of the first connectors by patterning the second conductive layer;

forming a plurality of second sub-touch pads arranged in a second direction crossing the first direction; and

forming a second connector positioned on the insulating layer so as to correspond to the first connector, and connecting adjacent second sub-touch pads to each other.

15 . The method of claim 14 , wherein at least one of the steps of forming the plurality of first connectors, forming the plurality of first sub-touch pads, forming the plurality of second sub-touch pads, and forming the second connector is performed by using a photolithography process using at least one of a half tone mask and a slit mask.

16 . The method of claim 14 , wherein at least one of the first conductive layer and the second conductive layer includes a light-transmissive conductive material.

17 . The method of claim 12 , further comprising the steps of:

forming a protective layer on said at least one touch pad; and

forming a cover on the protective layer.