Etching solution, touch panel and manufacturing method of touch panel

Abstract

The invention discloses an etching solution, a touch panel and a manufacturing method of the touch panel, and the manufacturing method of the touch panel comprises the following steps: providing a substrate which is provided with a display region and a peripheral region; a metal layer and a metal nanowire layer are arranged, the first part of the metal nanowire layer is located in the display region, and the second part of the metal nanowire layer and the metal layer are located in the peripheral region; the patterning step comprises the steps that etching liquid capable of etching the metal layer and the metal nanowire layer is used for forming a plurality of peripheral leads on the metal layer and forming a plurality of etching layers on the second part of the metal layer at the same time, and the etching liquid comprises hydrogen peroxide (0.2-40 wt%), acid (0.2-20 wt%), a metal corrosion inhibitor (0.1-10 wt%) and/or a stabilizing agent (0.1-10 wt%). In addition, the invention also provides an etching solution and a touch panel. Patterning of the metal nanowire layer or the metal layer is directly carried out through the etching liquid, so that the purpose of simplifying the manufacturing process is achieved, and the manufacturing cost is further controlled.

Description

technical field [0001] The invention relates to an etchant, 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. [0003] However, there are still many problems to be solved in the nanowire manufacturing technology, such as using nanowires to make t...

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Problems solved by technology

[0003] However, there are still many problems to be solved in the nanowire manufacturing technology, such as using nanowires to make touch electrodes, and the alignment error area needs to be reserved when the nanowires and the leads in the peripheral 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 in the roll-to-roll (Roll to Roll) process, and 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

Furthermore, the choice of etching solution is also a problem

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