Light emitting device, display device, light emitting component driver circuit, and method of driving light emitting component

摘要

A light emitting device includes light emitting component sets, a voltage measurement circuit, a voltage generator, and a drive controller. The voltage measurement circuit is configured to measure voltages at connecting points between light emitting component lines and drive switches. The voltage generator includes a plurality of smoothing capacitors for the light emitting component sets, respectively. The voltage generator is configured to generate a drive voltage applied to the light emitting component sets using one of the smoothing capacitors. The drive controller is configured to select the smoothing capacitor corresponding to the light emitting component set, the measured voltage of which is the lowest among the light emitting component sets on which lighting control is performed to alter the drive voltage according to alteration of the lighting control. The drive controller is configured to control the voltage generator to generate the drive voltage using the selected smoothing capacitor.

主权项

1. A light emitting device comprising:
a plurality of light emitting component sets, each set including a light emitting component line and a drive switch, the light emitting component line including a predetermined number of light emitting components connected in series, the drive switch being connected in series with the light emitting component line and switching the light emitting component line between on and off; a voltage measurement circuit configured to measure a voltage at a connecting point between the light emitting line and the drive switch in each light emitting component set; a voltage generator including a plurality of smoothing capacitors for the light emitting component sets, respectively, and configured to generate a drive voltage to be applied to the light emitting component sets using one of the smoothing capacitors; and a drive controller configured to select the smoothing capacitor corresponding to the light emitting component set, the measured voltage of which is the lowest among the light emitting component sets on which lighting control is performed, to alter the drive voltage according to the lighting control on the light emitting component sets, and
control the voltage generator to generate the drive voltage using the selected smoothing capacitor.