| 摘要 |
PROBLEM TO BE SOLVED: To uniformly maintain the emission brightness of at least two EL elements different in emission surface area, formed with a transistor and a winding transformer. SOLUTION: This circuit comprises an inverter circuit 20 to which an input voltage control circuit 10 or an inverter control circuit 30 is connected and a switching circuit 40 to which at least two EL elements different in emission surface area are connected. The circuit is controlled to uniform emission brightness by time-sharing drive in a control circuit 52. |
