| 摘要 |
The present invention discloses a liquid crystal display apparatus and a liquid crystal television that control the lighting of the backlight to reduce the power consumption and inform the user that the lighting is controlled while no video signal is inputted, enabling to realize the energy saving without impairing the user's convenience. When the microcomputer detects that no video signal is inputted, it stabilizes the oscillation duty ratio of the control circuit 32 c at an oscillation frequency lower than a predetermined value by decreasing the duty ratio of the brightness control signal inputted in the control circuit 32 c and by shifting the feedback tube current Isen that is feedbacked from the tube current feedback circuit 32 f to the high current side.
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