Binding method for capacitive touch screen

Abstract

The invention relates to a binding method for a capacitive touch screen, which comprises the following steps: evenly coating ultraviolet curable resin on the binding face of a first board body to serve as a bonding layer; then, performing binding in a vacuum environment; and finally, removing the vacuum environment, and fully curing the bonding layer by adopting ultraviolet irradiation so as to firmly bind the first board body with a second board body together. The first board body and the second board body are bound in the vacuum environment, and therefore, a bubble problem cannot exist between the first board body and the second board body, and the binding of large-sized board bodies can be realized. As the ultraviolet curable resin is coated evenly, and in the coating process, the use level of the ultraviolet curable resin and area are in direct ratio, the use level of the ultraviolet curable resin can be accurately controlled, so that large-area flowing cannot occur after the binding is finished, thereby, the thickness and the stress of all areas are quite uniform. The first board body and the second board body can be bound in a board-jointed state. The binding method for the capacitive touch screen is suitable for manufacturing board-jointed capacitive touch screens, and has higher production efficiency.

Description

technical field [0001] The invention relates to a bonding method, in particular to a bonding method of a capacitive touch screen. Background technique [0002] In recent years, with the rapid development and application of information technology, wireless mobile communications and information home appliances, people's dependence on electronic products is increasing day by day. In order to achieve more convenience, smaller size and more user-friendly, many electronic products have changed from traditional keyboards or mice as input devices to touch screens arranged in front of display screens as input devices. Existing touch screens can be roughly classified into capacitive, resistive, photosensitive and other types. Among them, capacitive touch screens have been widely used in various electronic products, such as mobile phones and tablet computers. The capacitive touch screen is characterized by high transmittance and no need to apply force when touching. It can also detec...

AI Technical Summary

Problems solved by technology

[0011] 1. It is impossible to achieve the lamination of large-size boards. In the case of lamination of large-size boards, air bubbles are often unable to be squeezed out from the gap between the extension feet of the curable resin;

[0012] 2. The amount of curable resin is difficult to control. When the amount is too small, it is easy to lack curable resin at the edge. When the amount is too large, the curable resin is easily squeezed out of the edge of the gap and is difficult to remove;

[0013] 3. The uniformity is difficult to control. Because the curable resin needs to flow in the gap during the compression process, it is difficult to achieve a consistent flow state at different positions, so it is easy to cause inconsistent thickness and stress in different regions

Especially when one of the boards is a flat-panel display, the surface of the flat-panel display will be stressed unevenly, eventually leading to the defect of uneven display

[0014] 4. The adhesive layer will affect the cutting of the board body, so this lamination method is only suitable for the lamination of unit products, but it is difficult to be used for panel products (the substrates of multiple units have not been cut, and subsequent needs and then cutting) lamination, it is difficult to have a high production efficiency

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