A light emitting device for image display, image display means and led driver

2010 
Object of the present invention is to provide one kind of an image region driven PWM-controlled display light-emitting device according to the APL of the image, flowability set reference current value and PWM constraints. A light emitting device for image display comprising: a light emitting element of each light emitting unit (5) arranged corresponding to each area; current supplied to the light emitting element is PWM-controlled unit (44 is) of the PWM control; a control condition setting unit (45), which is determined based on the image data and the APL can be set to update the PWM reference current constraints limiting the duty ratio of the PWM and PWM control as the current value of the PWM control in accordance with the flow through the light emitting element value; and a PWM value calculating section (43) that calculates a PWM value of each region based on the image data, and the reference PWM current limitation value, PWM control unit (44) based on the PWM current reference value and the calculated PWM value control.
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