Backlit Status Light Bar:
By utilizing side-firing LEDs and Light Guide Film (LGF), CSI Keyboards was able to design and develop a membrane switch with an LED light bar. The CSI Engineers used RGB LEDs, ensuring that they were mounted/located in areas on the PCB that would ensure optimal backlighting. The next step was designing the Light Guide Film ensuring the light guide prisms were designed for optimal backlighting and eliminating any chance for hot spots.