Patent ID: 7705545
Filing Date: 2010-04-27
Classification: G09G,H01J

Abstract:
1. A backlight unit, comprising a supply source ( 4 ), a discharge lamp ( 2 ) having a tubular discharge vessel ( 6 ) with an ionizable filling, electrodes ( 8 , 12 a , . . . 12 M, 10 ) arranged in a row along and external of the vessel at spaced relation to each other, wherein the supply source comprises lamp drivers ( 14 , 16 a , . . . 16 N), each of different pairs of electrodes is coupled to a corresponding lamp driver, and each lamp driver is suitable to supply a high frequency supply voltage to the pair of electrodes to which the lamp driver is coupled, characterized in that the supply source ( 4 ) comprises data processing means ( 18 ), which is suitable to process input display data (D) and to control the lamp drivers ( 14 , 16 a , . . . 16 N), such that their supplied supply voltages are dependent on the input display data.