Light emitting device (LED) array unit and LED module comprising the same
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-Pil Nam, Ki-Won Choi
Life of this patent
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Abstract
A light emitting device (LED) array module includes at least one terminal, a light emitting device (LED) array, and a rank storing device. The LED array includes a plurality of LEDs that emit light when a current is supplied from the outside of the LED array module. The rank storing device is configured to store rank information of the LED array that depends on brightness characteristics of the LEDs, and to output a signal corresponding to the rank information via the at least one terminal.
Claims19
A light emitting device (LED) array module, comprising:
- first and second terminals;
- a light emitting device (LED) array comprising a plurality of LEDs that emit light when a current is supplied from the outside of the LED array module;
- and
- a rank storing device configured to store rank information of the LED array that depends on brightness characteristics of the LEDs, and to output a signal corresponding to the rank information via the first and second terminals,
- wherein the rank storing device stores the rank information of the LED array according to an interconnection status of the first and second terminals.
An LED module, comprising:
- an LED array unit comprising an LED array including a plurality of LEDs, and a rank storing device configured to store rank information of the LED array according to brightness characteristics of the LEDs;
- and
- an LED driving device configured to supply a current to the LED array and control a magnitude of the current according to the rank information stored in the rank storing device,
- wherein the LED driving device comprises:
- a rank detecting device which detects a signal corresponding to the rank information stored in the rank storing device;
- and
- an adjustable current output device configured to output a current for driving the LED array and to be controlled by the rank detecting device.
A light emitting device (LED) array module comprising:
- first and second terminals;
- a light emitting device (LED) array comprising a plurality of LEDs that emit light when a current is supplied from the outside of the LED array module;
- and
- a rank storing device configured to store rank information of the LED array that depends on brightness characteristics of the LEDs, and to output a signal corresponding to the rank information via the first and second terminals,
- wherein the rank storing device comprises a resistor connected between the first and second terminals, and
- wherein the resistor has different resistances when the LED array has different ranks.
Dependencies are inferred from the claim text.