Clio Technologies, Inc. design and produce high quality inverters/drivers for backlights. The inverter/driver units are custom made to satisfy customers special requirements. The inverter can be made to achieve high dimming ratio. Dimming control can be digital (push button), or analogue (use a potentiameter). A special dimming scheme with hybrid light source, CCFLs for high brightness and LEDs for very low output brightness, is particularly suitable for achieving a very high dimming ratio. Power supply and control for heating can also be included in the inverter/driver unit to warm up the lamps for low temperature operation. Optical and thermal sensors can also be incorporated in the inverter/driving unit to provide feed-back for thermal and inverter power control.