Dimming circuit and method for LEDs

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9000682
APP PUB NO 20130200822A1
SERIAL NO

13827279

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Abstract

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A dimming circuit and method for a LED provide a first driving voltage or a second driving voltage according to a dimming signal provided by a functional IC to enable or disable the LED. The values of the first and second driving voltages are controlled so that overstressing of the LED is avoided while the functional IC is capable of working even when the LED is off. The LED's life time is thus prolonged.

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Patent Owner(s)

Patent OwnerAddress
RICHPOWER MICROELECTRONICS CORPORATIONMARQUEE PLACE SUITE 300 430 WEST BAY ROAD P O BOX 32052 GRAND CAYMAN KY1-1208

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lan, Peng-Ju New Taipei, CN 9 29
Ruan, Chen-Jie Shanghai, CN 7 31
Wang, Chin-Hui New Taipei, TW 17 160

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