Touch screen and manufacturing method

A touch screen comprising:

• a first substrate, a second substrate and a third substrate sequentially stacked,
• wherein a first sensing layer is provided on a first surface of the second substrate opposing to the third substrate, a second sensing layer is provided on a surface of the third substrate opposing to the second substrate,
• wherein the second substrate provided with the first sensing layer and the third substrate provided with the second sensing layer constitute a touch unit for sensing a touch signal, and the second substrate and the first substrate constitute a display unit for displaying,
• wherein the touch unit is a resistance type touch unit, and the first sensing layer and the second sensing layer are resistance type sensing layers,
• wherein a first touch electrode and a second touch electrode, which are used for transferring the touch signal, are provided in the first sensing layer and the second sensing layer, respectively, and
• wherein a substrate touch electrode connected with an external controlling circuit through a flexible printed circuit is provided on the first substrate, the substrate touch electrode is provided to oppose to the second touch electrode, both the substrate touch electrode and the second touch electrode are provided within a width range of a sealant for sealing the first substrate and the second substrate, the substrate touch electrode is electrically connected with the second touch electrode through the sealant for sealing the first substrate and the second substrate, and the touch signal is transferred to the external controlling circuit through the substrate touch electrode.