Openair® Plasma: Dirt-repellent, hydrophobic layer on the potting compound

Large-format screens comprise many high-powered LEDs. These are potted in a temperature-resistant silicone compound to protect them from environmental factors. When manufacturing displays, the LEDs are mounted on printed circuit boards by the wave-soldering method. The silicone potting compound can pick up residual tin from this bath, which leads to a high reject rate.

Using its Openair® PlasmaPlus® technology, Plasmatreat has succeeded in depositing an anti-stick, ultrathin layer of glass (SiOx) on the silicone. This layer protects the LEDs during the soldering process.

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