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US 8,912,726 B2Granted
Light emitting device
AssigneeSamsung Electronics Co., Ltd.
InventorsJong Ho Lee, Sung Tae Kim, Chan Mook Lim, Jin Hwan Kim
Life of this patent
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Abstract
Light emitting devices. A light emitting device including a power source; and a plurality of light emitting diode (LED) arrays coupled to the power source unit; and at least one delay unit. Each delay unit is coupled to a corresponding light emitting diode array of the light emitting diode arrays.
Claims12
A light emitting device comprising:
- a power source;
- a plurality of light emitting diode (LED) arrays coupled to the power source;
- and
- a plurality of delay units, each having an inductor;
- wherein:
- the inductor of each delay unit is coupled in series to a corresponding LED array of the LED arrays;
- inductors coupled to different LED arrays have different inductances so that delay times associated with the delay units are different;
- and
- inductances of each of the inductors coupled to different LED arrays are configured so that each of the delay times associated with the delay units is shorter than a single period of driving time of the LED arrays, and configured so that a duration of time during which light emission does not substantially take place is eliminated from the light emitting device as a whole.
6 more elements
A light emitting device, comprising:
- a power source;
- a plurality of light emitting diode (LED) arrays, each LED array including a plurality of LEDs;
- a plurality of delay units, each having an inductor coupled in series to a corresponding LED array;
- and
- a driver integrated circuit (IC) coupled between the power source and the LED arrays;
- wherein:
- inductors coupled to different LED arrays have different inductances so that delay times associated with the delay units are different;
- and
- inductances of each of the inductors coupled to different LED arrays are configured so that each of the delay times associated with the delay units is shorter than a single period of driving time of the LED arrays, and configured so that a duration of time during which light emission does not substantially take place is eliminated from the light emitting device as a whole.
6 more elements
Dependencies are inferred from the claim text.