OEM custom made mobile phone soft large keypad

A soft large keypad provides a custom molded control surface for a mobile-phone design. The larger visible key areas should be coordinated with the housing and circuit positions rather than enlarged independently. The layout needs enough separation for accurate presses while remaining practical to use in the hand.

Check how the thumb reaches the controls and whether the housing leaves the whole useful face accessible. A broad key can still rub against its aperture or affect a neighbor if the moving clearance is insufficient. The supporting membrane and board position also determine the final actuation feel.

Fit the keypad into the intended enclosure and test it with the case secured. Include presses near the edges of larger keys, not only at their centers, and check that they return freely. Keep the underside clean during assembly. Select the compound for the actual operating and cleaning conditions. During service, inspect for trapped edges if the key feel changes after the phone has been opened, since a soft material still needs the correct assembled spacing.

Material options

Rubber. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. Include presses near the edges of larger keys, not only at their centers, and check that they return freely.

Custom dimensions

A broad key can still rub against its aperture or affect a neighbor if the moving clearance is insufficient.

Fit & assembly

The supporting membrane and board position also determine the final actuation feel.

Use & inspection

During service, inspect for trapped edges if the key feel changes after the phone has been opened, since a soft material still needs the correct assembled spacing.

Photos illustrate structure or material only. A broad key can still rub against its aperture or affect a neighbor if the moving clearance is insufficient. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.