LOAD DRIVING DEVICE, AND LIGHTING APPARATUS AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME

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United States of America Patent

APP PUB NO 20190334437A1
SERIAL NO

16508423

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Abstract

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A light emitting load driving device includes a plurality of constant current sources structured to be serially connected to a plurality of light emitting loads connected in parallel respectively, and structured to control a current flowing through the plurality of light emitting loads connected in parallel; a plurality of load connection terminals structured to be connected to the plurality of light emitting loads connected in parallel and the plurality of constant current sources respectively; a control circuit structured to be controlled based on a plurality of terminal voltage applied to the plurality of load connection terminals and a reference voltage, and structured to control a voltage output portion generating an output voltage provided to the plurality of light emitting loads connected in parallel so that both of a lowest terminal voltage applied to the plurality of load connection terminals and the reference voltage are equalized with respect to each other.

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Patent Owner(s)

Patent OwnerAddress
ROHM CO LTD21 SAIIN MIZOSAKI-CHO UKYO-KU KYOTO-SHI KYOTO 6158585 ?6158585

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Murakami, Sadakazu Kyoto, JP 19 121

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