ELECTRONIC APPARATUS AND CONTROL METHOD THEREOF

Disclosed is an electronic device. The electronic device includes: a plurality of LED arrays arranged in parallel; a first sensing inductor connected in series to a first LED array among a plurality of LED arrays; a first auxiliary inductor disposed adjacent to the first sensing inductor; a second s...

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Bibliographische Detailangaben
Hauptverfasser: LEE JI WON, JOO SUNG YONG, YOU TAE JUN, WON JUN HYUN
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:Disclosed is an electronic device. The electronic device includes: a plurality of LED arrays arranged in parallel; a first sensing inductor connected in series to a first LED array among a plurality of LED arrays; a first auxiliary inductor disposed adjacent to the first sensing inductor; a second sensing inductor connected in series to a second LED array among the plurality of LED arrays; a second auxiliary inductor disposed adjacent to the second sensing inductor; a variable resistor connected to the plurality of LED arrays to adjust the amount of currents flowing through the plurality of LED arrays according to resistance values; and a driver, when at least one of a first induced voltage generated in the first auxiliary inductor and a second induced voltage generated in the second auxiliary inductor is greater than or equal to a threshold value, identifying the situation as the occurrence of an error in at least one of the first LED array and the second LED array, and adjusting a resistance value of the variable resistor based on the identification result. Therefore, the present invention is capable of identifying an LED array in which a failure occurs. 전자 장치가 개시된다. 전자 장치는, 병렬 배치된 복수의 LED 어레이, 복수의 LED 어레이 중 제1 LED 어레이에 직렬 연결된 제1 센싱 인덕터, 제1 센싱 인덕터에 인접 배치된 제1 보조 인덕터, 복수의 LED 어레이 중 제2 LED 어레이에 직렬 연결된 제2 센싱 인덕터, 제2 센싱 인덕터에 인접 배치된 제2 보조 인덕터, 복수의 LED 어레이에 연결되어 저항 값에 따라 상기 복수의 LED 어레이에 흐르는 전류량을 조정하는 가변 저항 및 제1 보조 인덕터에서 발생되는 제1 유도 전압 또는 제2 보조 인덕터에서 발생되는 제2 유도 전압 중 적어도 하나가 임계 값 이상인 경우 제1 LED 어레이 또는 제2 LED 어레이 중 적어도 하나에 에러가 발생한 것으로 식별하고, 식별 결과에 기초하여 가변 저항의 저항 값을 조정하는 LED 드라이버를 포함한다.