Touch panel, manufacturing method of touch panel and display device

Abstract

The invention discloses a touch panel, a manufacturing method of the touch panel and a display device. The manufacturing method of the touch panel arranges a transparent conductive film above a secondlead on the upper layer, the problem that the lead in the wiring area is easy to oxidize and corrode is solved; when the touch panel is manufactured, only each wet process of the transparent conductive thin film needs to be baked to dry water vapor brought by the wet process of the transparent conductive thin film, so that the process procedures are simplified, the cost is reduced, the problem that bubbles are generated due to water absorption of the transparent conductive thin film is solved, and the product quality of the touch panel is improved.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch panel, a manufacturing method of the touch panel and a display device. Background technique [0002] Liquid Crystal Display (LCD) is widely used in mobile phones, computers and other display fields due to its small size, thin thickness and low power consumption. However, with the improvement of people's performance requirements for LCD, it has touch function Displays are increasingly becoming mainstream products that people want. [0003] Existing touch technologies are mainly divided into plug-in type, In Cell technology and On Cell technology. The plug-in type means that the LCD and the touch layer are separated, and the touch layer is set on a glass plate or an organic material, and then the glass or organic material with the touch layer is bonded to the surface of the LCD. Although the plug-in touch screen satisfies people's needs for touch functions, it incr...

AI Technical Summary

Problems solved by technology

[0004] At present, in the manufacturing process of On Cell touch panels, a transparent conductive film (ITO layer) is added to protect the metal leads in the wiring area from being corroded. Usually, the transparent conductive film is placed on the lower metal lead layer, but in actual production Because the transparent conductive film is not poly (polycrystalline) / water absorption is strong, resulting in poor water absorption of the transparent conductive film on the pad and the phenomenon of bulging; and then after high-pressure water washing in subsequent layers, it is easy to cause the bubbles to burst; The transparent conductive film is easy to fall off after being blown by a knife, and the metal leads below are exposed to the air and are prone to the risk of oxidation and corrosion, which affects the product quality of the touch panel

In the prior art, after depositing a transparent conductive film on the lead of the lower layer, it is necessary to bake (oven) after each wet process of the subsequent layer, such as the transparent conductive film and the insulating film arranged on the transparent conductive film. Both layers and the upper layer leads need to be washed with water after yellowing, etching, and photoresist removal. Baking is performed after each wet process to dry the water vapor, which can improve the bubble problem of the transparent conductive film, but because of the follow-up Each wet process of the layer requires a baking process, which will cause problems such as cumbersome manufacturing process, insufficient baking capacity of the machine, and increased cost

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