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US 7,705,545 B2Granted
Backlight unit
AssigneeKoninklijke Philips Electronics N.V.
InventorsCornelis Versluijs, Marialuce Graziadei, Renatus Willem Clemens Van Der Veeken
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AssigneeKoninklijke Philips Electronics N.V.
InventorsCornelis Versluijs, Marialuce Graziadei, Renatus Willem Clemens Van Der Veeken
Estimating the term…
Backlight unit comprising a supply source (4), a discharge lamp (2) having a tubular discharge vessel (6) with an ionizable filling, three or more electrodes (8, 10, 12) arranged in a row along and external of the vessel at spaced relation to each other. The supply source comprises lamp drivers (14, 16) and data processing means (18). Each pair of different pairs of electrodes is coupled to a corresponding lamp driver. Each lamp driver is suitable to supply a high frequency supply voltage to the pair of electrodes to which the lamp driver is coupled. The data processing means is suitable to process input display data (D) and to control the lamp drivers such that their supplied supply voltages are dependent on the input display data.
A backlight unit, comprising a supply source (4), a discharge lamp (2) having a tubular discharge vessel (6) with an ionizable filling, electrodes (8, 12a, . . . 12M, 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, 16a, . . . 16N), 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, 16a, . . . 16N), such that their supplied supply voltages are dependent on the input display data.
Dependencies are inferred from the claim text.