Touch panel and manufacturing method thereof

Abstract

The invention discloses a touch panel and a manufacturing method thereof, and the manufacturing method of the touch panel comprises the steps: providing a substrate which is provided with a display region and a peripheral region; setting a metal layer, including: pre-treating the substrate; adjusting characteristics of the surface of the substrate; forming a catalytic center on the surface of the substrate; modulating the activity of the catalytic center; and performing chemical plating on the surface of the substrate to form a metal layer, arranging a metal nanowire layer, wherein the first part of the metal nanowire layer is located in the display area, and the second part of the metal nanowire layer and the metal layer are located in the peripheral area; and performing a patterning step, wherein the patterning step comprises forming a plurality of peripheral leads on the metal layer by using an etching solution capable of etching the metal layer and the metal nanowire layer, and forming a plurality of etching layers on the second part of the metal nanowire layer at the same time. The invention further provides a touch panel.

Description

technical field [0001] The invention relates to a touch panel and a manufacturing method thereof. Background technique [0002] In recent years, transparent conductors can simultaneously allow light to pass through and provide proper conductivity, and thus are often used in many display or touch-related devices. Generally speaking, the transparent conductor can be various metal oxides, such as indium tin oxide (Indium Tin Oxide, ITO), indium zinc oxide (Indium Zinc Oxide, IZO), cadmium tin oxide (Cadmium Tin Oxide, CTO) or aluminum-doped oxide Zinc (Aluminum-doped Zinc Oxide, AZO). However, these metal oxide thin films cannot meet the flexibility requirements of display devices. Therefore, a variety of flexible transparent conductors have been developed, for example, transparent conductors made of materials such as nanowires. In addition, in touch-related devices, the wiring in the peripheral area is traditionally formed by electroless plating. Before the electroless plat...

AI Technical Summary

Problems solved by technology

At present, the cost of the chemical solution and process for making the catalytic layer is too high, and the source is not easy to obtain, which has caused a major problem in the production process

[0003] However, there are still many problems to be solved in the process technology of the nanowires. For example, using nanowires to make touch electrodes, an alignment error area needs to be reserved when the nanowires and the leads in the surrounding area are aligned. The bit error area causes the size of the lead wires in the peripheral area to be unable to be reduced, which in turn leads to a larger width in the peripheral area, especially when the roll-to-roll (Roll to Roll) process is adopted, the deformation of the substrate causes the size of the alignment error area to be further enlarged (eg 150um), so that the minimum width of the peripheral area is only 2.5mm, so it cannot meet the narrow border requirements of the display

Images