Water Immunity Features in DISPLAX Connect

DISPLAX Connect includes new Water Immunity features designed to improve touch performance in environments where water, droplets, or moisture may be present on the glass surface.

These features help the Touch Controller identify water areas and prevent false touches, while still allowing intentional touch interaction when properly tuned.

Overview of Water Immunity Controls

The Water Immunity system consists of three related controls:

• Frame Classification

• Water Sensitivity

• Water Threshold

Each parameter plays a different role and should be adjusted gradually and together, always keeping values as low as possible for best touch performance.

Frame Classification

Frame Classification is a diagnostic and visualisation tool.

What it does

• When enabled, it highlights in the frame representation the areas where water is being detected

• Helps identify:

  • Water accumulation zones

  • Splashes or condensation patterns

  • Areas causing false touches

When to use it

• During setup and tuning

• To visually confirm where water is affecting the sensor

• For troubleshooting false touch events

ℹ️ Frame Classification does not change touch behavior by itself. It only visualizes water detection.

Water Sensitivity

Water Sensitivity defines how aggressively the sensor detects and rejects water.

Range

• Values from 1 to 7

Behavior

• Lower values → Less aggressive water rejection

• Higher values → Increased immunity to water, but reduced touch sensitivity

Important guidance

• Higher values make the sensor more immune to water

• Excessive values may:

  • Reduce touch responsiveness

  • Make touches harder to register, especially through water

⚠️ Always use the lowest Water Sensitivity value that achieves acceptable water immunity.

Water Threshold

Water Threshold defines the touch threshold applied only in areas where water is detected.

Range

• 0 to 61

Behavior

• A higher threshold makes it harder for touches to be detected in wet areas

• This helps prevent:

  • False touches

  • Ghost inputs caused by water

Best practice

• Always start at 0

• Increase only if touch performance is not satisfactory with water

• Keep the value as low as possible

⚠️ High Water Threshold values can generare the appearance of false touches in wet zones.

Recommended Adjustment Strategy

For best results:

1. Enable Frame Classification

2. Identify where water is detected

3. Increase Water Sensitivity gradually (one step at a time)

4. Only adjust Water Threshold if false touches remain

5. Test:

   • Single-finger touch

   • Multi-touch

   • Drag gestures

6. Stop increasing values as soon as acceptable behavior is reached