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E-charging station with high-quality HMI display
E-Mobility & Infrastructure

HMI Excellence for the E-Charging World: From Precise Lamination to 86" Optical Bonding

BSE Optical Bonding · March 2026

The global e-mobility infrastructure is growing rapidly โ€“ and so are the technological demands placed on its hardware. The HMI (Human-Machine Interface) is the central physical point of contact between the user and the charging station. In outdoor environments, these interfaces must withstand extreme conditions โ€“ from scorching heat to heavy rain and frost.

For a charging station to operate reliably 24/7, a standard display simply isn't enough. What's needed is a technological symbiosis of robust PCAP touch, precise lamination, and professional optical bonding for displays.

1. PCAP Touch: Robustness Starts in the Cleanroom

At an e-charging station, the touchscreen must respond under all circumstances โ€“ whether it's raining, snowing, or the user is wearing thick work gloves.

๐ŸŒง๏ธ All-Weather Performance

Our PCAP systems are calibrated to distinguish moisture from genuine touch input. Ghost touches caused by rain are reliably eliminated.

๐Ÿงค Glove Operation

Precise touch recognition even with work gloves โ€“ reliably under all weather conditions in outdoor deployments.

  • Precision Through Lamination: In our ISO Class 7 cleanroom, we laminate sensor films under strictly controlled conditions. This dust-free environment is essential to guarantee the long-term electrical stability of the sensors and proactively prevent failures caused by microscopic particle inclusions or ESD issues.

2. The Core Technology: Professional Silicone Optical Bonding

We achieve maximum brilliance and clarity by fully bonding the display and cover glass using a specialised two-component liquid silicone. This process is the benchmark for industrial outdoor applications.

Why we consistently rely on silicone:

โ˜€๏ธ UV & IR Protection

Charging stations are often exposed to direct sunlight. Our silicone bonding is fully UV-stable and will not yellow. We also integrate IR filters directly into the glass assembly to protect the panel from thermal overheating (the so-called black-out effect).

๐Ÿ’ง Anti-Fogging

By eliminating the air gap, moisture can no longer condense inside the display. The screen remains clearly readable under all climatic conditions.

๐ŸŒก๏ธ Thermal Shock Resistance

The elastic silicone acts as a shock absorber during extreme temperature fluctuations and mechanical impacts.

3. Scalability: From Compact to Maximum Formats

Modern e-charging stations are increasingly evolving into multifunctional information hubs. This calls for larger displays to support advertising and intuitive user guidance.

  • Automated up to 65 inches: For the mass market of fast-charging stations, we offer automated bonding processes up to 65", ensuring consistent industrial quality and high production volumes.
  • Semi-automated up to 86 inches: For demanding solutions in public spaces, we scale our technology up to 86 inches โ€“ covering one of the broadest spectrums for industrial large-format displays on the market.

4. EMC and Safety in Focus

Especially during charging processes with high currents, electromagnetic compatibility (EMC) is critical for the reliable operation of touch systems.

๐Ÿ›ก๏ธ EMI Shielding

We integrate ultra-fine metal mesh structures that block interference signals and ensure the flawless operation of the touch controller.

๐Ÿ”’ Splinter Protection

In the event of severe damage, our optical bonding holds the glass assembly together. No dangerous splinters are released into the surroundings โ€“ an essential safety feature in public spaces.

Conclusion: Quality Is a Matter of Process

A display for modern charging infrastructure must be a technological powerhouse. With our expertise in cleanroom lamination and large-format silicone bonding, we deliver the hardware that makes your systems future-proof.

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