| 摘要 |
PROBLEM TO BE SOLVED: To provide a discharge lamp driving device and a liquid crystal display device wherein detection can be made that the discharge lamp is in open state in a both-side driving method. SOLUTION: As for first voltage detecting elements Cc1 to Ccn, Ce1 to Cen, one end is connected to at least one side among first and second discharge lamp connecting elements P11 to P1n, P21 to P2n. As for second voltage detecting elements Cd1 to Cdn, Cf1 to Cfn, one end is connected to the other end of the first voltage detecting elements Cc1 to Ccn, Ce1 to Cen, and the other end is led to a grounding terminal. A signal processing part 30 forms a signal SO which detects open states of discharge lamps 21 to 2n from voltages V31 to V3n, and V41 to V4n formed at connection points of the first voltage detecting elements Cc1 to Ccn, Ce1 to Cen, and the second voltage detecting elements Cd1 to Cdn, and Cf1 to Cfn. COPYRIGHT: (C)2006,JPO&NCIPI |
