US Patent 8174482 Techniques to control brightness in a display

A node to receive a first current and to couple a first or a second backlighting medium to the node. The first backlighting medium is to conduct the first current and the second backlighting medium to conduct a second current. A switch is coupled to the node and to the first or the second backlighting medium. The switch is to receive a control input signal and to conduct a third current if the second backlighting medium is coupled to the node.