The light guide film (LGF) brings integrated LED backlighting to membrane switches and front panel decals allowing text and full key illumination. Our LGF provides even light distribution across the keypad/decal front panel while keeping the thickness similar to standard membrane switch panels.

LED backlighting needs careful consideration and planning in order to implement successfully into a design. There are some key design criteria and some constraints to be aware of, so if you are considering an integrated backlight in your design, please contact Keyflex directly for further information.

Use the Light Guide Film (LGF) for Keypads or LCD backlighting allows for backlighting only where needed. The CSI solution allows for uniform distribution of light regardless of the distance from LEDs. It also allows for segmentation of areas to avoid light leakage between areas or colours.