| 摘要 |
The quality of the readjustment of LED backlights for screens is intended to be improved. For this purpose, provision is made for using a sensor (FS, TS) to detect a physical quantity in the LED module (2), in particular the brightness of an LED (LR, LG1, LG2, LB) or the temperature. The drive current through the respective LED is then changed depending on the at least one physical quantity detected. The colour of an LED module can thus be kept stable over the course of the life time.
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