LED module

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9508910
SERIAL NO

14367010

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The purpose of the present invention is to reduce the size and thickness of an LED module in which a plurality of LED dies along with other electronic components are mounted on a circuit board, and at the same time to stabilize the operation of the module with respect to source voltage fluctuation. The LED module includes: a circuit board; a plurality of LED dies that are mounted on one surface of a circuit board as bare chips and constitute a series circuit; an FET die that is mounted on the one surface of a circuit board as bare chips and controls a current flowing through the plurality of LED dies; and a constant current circuit that is mounted on the one surface of a circuit board and is series-connected to the series circuit. The constant current circuit includes the FET die.

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Patent Owner(s)

  • CITIZEN ELECTRONICS CO., LTD.;CITIZEN WATCH CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiyama, Takashi Saitama, JP 182 1892
Arai, Hidekazu Yamanashi, JP 12 92
Ochiai, Yuki Yamanashi, JP 28 128
Watanabe, Shigehisa Yamanashi, JP 16 310

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