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AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsBo Hyun Hwang, Jung Sun Kwon, Jung Hyun Kim, Seung Kon Kong, Jae Shin Lee, Joon Youp Sung
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Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; a first switching unit selectively feeding-back voltage levels of each channel; and a switching controller controlling the turn on/off of the first switching unit, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to degradation of the matching of the currents between the channels.
A light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array, the LED driving device comprising:
A light emitting diode (LED) driving device for driving an LED device for each channel, the LED device including N LED channels each configured by connecting N LED arrays configured of at least one LED element in parallel, the LED driving device comprising:
Dependencies are inferred from the claim text.