Touch screen and method of producing the same

A method of producing a touch screen, comprising the following steps:

• providing a glass substrate, wherein the glass substrate comprises a first surface and a second surface which are arranged oppositely;
• forming a first conductive layer, wherein the first conductive layer is directly formed on the first surface and has a plurality of first conductive pattern areas;
• the first conductive pattern area comprises a metal grid consisting of a plurality of crossed metal wires;
• and the plurality of the first conductive pattern areas are insulated from each other;
• coating an insulating adhesive layer, wherein the insulating adhesive layer is coated on the first surface, a first groove, matched with the first conductive pattern area, is formed on one side of the insulating adhesive layer close to the first surface;
• and the first conductive pattern area is received in the first groove;
• imprinting a second groove, wherein the second groove is imprinted in one side of the insulating adhesive layer with a preset shape, the one side is far away from the first surface, and a depth to width ratio of the second groove is larger than 1;
• forming a second conductive layer, wherein a conductive material is filled in the second groove and cured, thus forming a second conductive layer with a plurality of second conductive pattern areas;
• the second conductive pattern area comprises a conductive grid formed by a conductive wire;
• the conductive grid is received in the second groove;
• the plurality of the second conductive pattern areas are insulated from each other;
• and a projection of the first conductive pattern area, which is projected on the surface of the second conductive pattern area, is intersected with the second conductive pattern area,
• wherein coating the insulating adhesive layer comprises the following steps:
• coating a first insulating adhesive layer, wherein the first groove, matched with the first conductive pattern area, is formed on one side of the first insulating adhesive layer close to the first surface;
• and the first conductive pattern area is received in the first groove;
• curing the first insulating adhesive layer;
• coating a second insulating adhesive layer, wherein the second groove, matched with the second conductive pattern area, is formed on one side of the second insulating adhesive layer away from the first surface, and
• forming a cutout, a first lead wire and a second lead wire;
• wherein the first lead wire is attached to the first surface of the glass substrate;
• one end of the first lead wire is electrically connected with the first conductive pattern area;
• the second lead wire is embedded in one side of the second insulating adhesive layer far away from the glass substrate;
• one end of the second lead wire is electrically connected with the second conductive pattern area;
• the cutout is provided at one end of the first insulating adhesive layer, which aligns with the other end of the first lead wire;
• the cutout cuts through the first insulating adhesive layer and the second insulating adhesive layer;
• the other end of the first lead wire and the other end of the second leading wire are exposed to the same side of the second insulating adhesive layer through the cutout.