Patent ID: 8896515
Filing Date: 2014-11-25
Classification: G02F,H05B,Y02B

Abstract:
1. A Backlight Apparatus comprising: a first backlight part comprising a plurality of first lamps; a second backlight part is disposed between at least two second lamps of the second backlight par; and a backlight controller which drives independently the first backlight part and the second backlight part by providing a first driving signal and a second driving signal to the plurality of first lamps and the plurality of second lamps, respectively, wherein the backlight controller drives the first backlight and the second backlight part such that one of the first backlight part and the second backlight part remains operational even when the other backlight part is shut down, wherein the first lamps of the first backlight part and the second lamps of the second backlight part are disposed in an alternating arrangement such that the backlight apparatus provides uniform light even when the other backlight part is shut down, wherein a first terminal of at least one of the plurality of first lamps and the plurality of second lamps is directly connected to a first terminal of a secondary coil of a transformer part and a second terminal of the at least one of the plurality of first lamps and the plurality of second lamps is directly connected to a ground, and a second terminal of the secondary coil comprises two ends, one end of the second terminal of the secondary coil is connected to the ground via a detecting resistor, and the other end of the second terminal of the secondary coil is connected to the ground via a detecting resistor, and the other end of the second terminal of the secondary coil is directly connected to the backlight controller to provide a current feedback signal; a backlight inverter inverter integrated chip which outputs a driving control signal based on the current feedback signal; a feedback signal detecting part which detects a voltage feedback signal and outputs a power detecting signal based on the detected voltage feedback signal; and an AND gate which generates at least one of the first driving signal and the second driving signal based on the driving control signal and the power detecting signal and provides the at least one of the first driving and the second driving signal to at least one of the first backlight part and the second backlight part, respectively.