Preparation method for touch panel, touch panel, and display device

A preparation method for a touch panel, comprising:

• step S10, forming a pattern comprising a first electrode chain and an insulating layer on a substrate, by using a patterning process for once, wherein the insulating layer is formed on the first electrode chain and the insulating layer covers the first electrode chain;
• and
• step S11, forming a pattern comprising a second electrode chain on the substrate on which the step S10 has been finished, by using a patterning process for once, wherein the second electrode chain and the first electrode chain are spatially crossed and are insulated from each other, wherein the first electrode chain and the second electrode chain are all produced from a transparent conductive material, and the insulating layer is produced from a transparent photosensitive material;
• wherein the step S10 comprises:
• sub-step S101, depositing a first electrode chain film on the substrate, and then coating an insulating layer film on the first electrode chain film;
• sub-step S102, forming a pattern comprising the insulating layer by exposing and developing processes;
• and
• sub-step S103, forming the pattern comprising the first electrode chain by an etching process, straight after forming the pattern comprising the insulating layer.