| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting device permitting to reduce blurring of movement and tailing in animation display while inhibiting display brightness from falling off, moreover, capable of suppressing power consumption, reducing the weight and size, and prolonging the life of the device, and to provide a liquid crystal display using the same. <P>SOLUTION: A light source control part 22 of a control circuit 16 outputs a luminance control signal to each light source power supply circuit 35-38 in synchronization with latch pulse signals LP outputted to a gate driver 12 from a gate driver control part 18. Based on the inputted luminance control signal, each light source power supply circuit 35-38 changes over the light emitting states of cold cathode tubes 30-33 to any of the 1st to 3rd light emitting states S1-S3 to light an LCD panel 2 from the back surface of the display area. The 1st light emitting state is a turned-off state S1; the 2nd light emitting state a maximum lighting state S2 in which the maximum lighting brightness can be obtained; and the 3rd light emitting state is an intermediate lighting state S3 in which about a half of the 2nd light emitting state can be obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
