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Technology for attaching capacitive touch screens

A capacitive touch screen and bonding technology, which is applied in the direction of electrical digital data processing, packaging/bundling items, lamination, etc., can solve the problem of affecting the quality of capacitive touch screens, high defective rate and production cost, and poor defoaming effect and other problems, to achieve the effect of eliminating edge pressure effect, improving yield rate, and good defoaming effect

Inactive Publication Date: 2011-04-27
城步新鼎盛电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Technology for attaching capacitive touch screens
  • Technology for attaching capacitive touch screens
  • Technology for attaching capacitive touch screens

Examples

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Embodiment 1

[0017] Example 1: Such as figure 1 As shown, TP sensor 1 specifications: 85mm×55mm×0.5mm (length×width×thickness); tempered glass panel 3 specifications: 110mm×56mm×1.0mm; optical glue 2 thickness: 175um.

[0018] Such as figure 2 As shown, the micro airbag is made by bonding PVC film 4 and PET film 5, and P is the pressure of the central vacuum machine. When the capacitive touch screen module wrapped by the micro airbag is sent to the central vacuum machine to defoam, the edge pressure effect changes from The bonding edge 6 of the TP sensor and the tempered glass panel is moved outside to the edge 7 of the micro airbag, which well eliminates the air bubbles in the bonding edge 6 of the TP sensor and the tempered glass panel.

[0019] Such as image 3 As shown, a capacitive touch screen bonding process includes the following steps: A. The surface of the TP sensor 1 and the tempered glass panel 3 is cleaned and then dried, and then static electricity is removed; B. The TP sensor 1 ...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044B32B37/12B65B11/50
Inventor 周剑飞
Owner 城步新鼎盛电子科技有限公司
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