Patent ID: 9084307
Filing Date: 2015-07-14
Classification: G02F,G09G,H05B

Abstract:
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