Preparation process of capacitive touch screen, and capacitive touch screen

Abstract

The present invention discloses a preparation process of a capacitive touch screen, which comprises the following steps: (1) laying a transparent conductive layer on a substrate, and coating an acid-proof film on the transparent conductive layer according to the set conductive patterns; (2) setting a target on the acid-proof film, and coating a transparent acid and alkali-resistant material on the target; (3) implementing etching to retreat the film to form the conductive patterns on the substrate, and reserving the target for protection of the acid and alkali-resistant material; (4) combining optically clear adhesive (OCA), and laying the OCA on the substrate to coat the conductive patterns; (5) cutting into particles, and dividing a large piece of substrate into several small functional pieces; (6) binding FPC, positioning through the target, and binding the target corresponding to the FPC to the functional pieces; and (7) combining transparent plates, and laying the transparent plates onto the functional pieces. The present invention further discloses a capacitive touch screen. The present invention solves the problem that the target on the transparent conductive layer is transparent and hard to perform contraposition, reduces contraposition difficulty, and improves yield rate efficiency of the process requiring contraposition.

Description

technical field [0001] The invention relates to a touch screen, in particular to a preparation process of a capacitive touch screen and a capacitive touch screen produced by the preparation process. Background technique [0002] At present, in the production of capacitive touch screens, the substrate with a transparent conductive layer is etched, the transparent conductive layer is etched into the required pattern, and the FPC and the transparent conductive layer are connected by printing conductive silver paste. The latest technology is that the transparent conductive layer is directly and For FPC connection, conductive silver paste is no longer printed, which can reduce the finished product and improve efficiency, but this requires precise alignment between the transparent conductive layer and the FPC before bonding, otherwise it will lead to problems such as poor contact. However, since the transparent conductive layer is transparent, it is difficult to perform target ali...

AI Technical Summary

Problems solved by technology

[0002] At present, in the production of capacitive touch screens, the substrate with a transparent conductive layer is etched, the transparent conductive layer is etched into the required pattern, and the FPC and the transparent conductive layer are connected by printing conductive silver paste. The latest technology is that the transparent conductive layer is directly and FPC connection, no longer printing conductive silver paste, which can reduce the finished product and improve efficiency, but this requires precise alignment between the transparent conductive layer and the FPC first, and then bonding, otherwise it will lead to poor contact and other problems

However, since the transparent conductive layer is transparent, it is difficult to align the FPC with the transparent conductive layer, resulting in low product yield and production efficiency.

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