Technology for attaching capacitive touch screens

Abstract

Technology for attaching capacitive touch screens relates to the technology for attaching touch screens and comprises the following steps: first cleaning and then drying the surfaces of a TP sensor and a toughened glass panel, and then carrying out electrostatic removing; attaching optical adhesives to the TP sensor and the toughened glass panel and sending the TP sensor and the toughened glass panel to a central vacuum machine for bubble removing; taking out the TP sensor and the toughened glass panel from the central vacuum machine for mechanical locating and attaching so as to form a capacitive touch screen module; selecting and clipping PVC films and PET films; coating adhesives on and drying the PVC films and PET films; adhering the PVC films and PET films respectively to the TP sensor and the toughened glass panel so as to form a capacitive touch screen module encapsulated by a miniature air bag; sending the module to the central vacuum machine for bubble removing and removing the PVC and PET films. The technology solves the problem of bubbles on the edge during attaching by adopting the method of removing bubbles with the miniature air bag and can be widely applied to attaching the capacitive touch screens.

Description

technical field [0001] The invention relates to a bonding process of a touch screen, in particular to a bonding process of a capacitive touch screen. Background technique [0002] The production process of capacitive touch screen involves a key process, that is, the bonding process. This process includes two main links of bonding and defoaming, of which the defoaming link is the most critical. When the tempered glass panel is bonded to the TP sensor, there are generally air bubbles in the interlayer. These air bubbles must be completely removed, otherwise, the quality of the capacitive touch screen will be affected. At present, all domestic and international companies that produce capacitive touch screens adopt large-scale vacuum lamination technology. Although this method has high work efficiency, the effect of defoaming is not good. The pressure difference is lost due to balance (that is, the edge pressure effect), resulting in edge bubbles, so that the lamination yield ...

AI Technical Summary

Problems solved by technology

When the tempered glass panel is bonded to the TP sensor, there will generally be air bubbles in the interlayer. These air bubbles must be completely removed, otherwise, the quality of the capacitive touch screen will be affected.

At present, all domestic and international companies that produce capacitive touch screens adopt large-scale vacuum lamination technology. Although this method has high work efficiency, the effect of defoaming is not good. The pressure difference is lost due to balance (that is, the edge pressure effect), resulting in edge bubbles, so that the lamination yield can only reach about 80%, and the defective rate and production cost are high

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