Displays for digital gauges and indicators, radios, on-board computers, mobile telephones, and laptop monitors are bonded with a flexible film or conductive rubber, using a hot sealing process. The film forms a flexible connection between the circuit board and the contact surface that generally comprises two thin panes of glass.

LCD with heat seal film. The component at left shows the high quality of adhesion after the peel test

The simple principle used in Openair® plasma pre-treatment removes every trace of carbohydrates and impurities from these contact surfaces. This results in a uniformly high bonding quality and a reduction of scrap rates. The same applies to this process with hot bar soldering and micro-welding.

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