Invention Grant
- Patent Title: LED emitting device and driving method thereof
- Patent Title (中): LED发光装置及其驱动方法
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Application No.: US13845932Application Date: 2013-03-18
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Publication No.: US09101032B2Publication Date: 2015-08-04
- Inventor: Jin-Tae Kim , Dong Jin Park , Shanmei Li , Byunghak Ahn , Jin Chenghao
- Applicant: Fairchild Korea Semiconductor Ltd.
- Applicant Address: KR
- Assignee: Fairchild Korea Semiconductor LTD
- Current Assignee: Fairchild Korea Semiconductor LTD
- Current Assignee Address: KR
- Agency: Perreault & Pfleger PLLC
- Agent Grossman Tucker
- Priority: KR10-2012-0030806 20120326; KR10-2013-0025815 20130311
- Main IPC: H05B33/08
- IPC: H05B33/08
Abstract:
Disclosed are an LED emitting device and driving method thereof. The LED emitting device controls an LED drive switch connected to a first end of an LED string to control an output current supplied to the LED string. The LED emitting device generates feedback information on the output voltage or the output current supplied to the LED string, and uses the output current to sense an open lamp state of the LED string. The LED emitting device uses a voltage at a first end of the LED drive switch to sense a change of the LED string to a normal state from the open lamp state.
Public/Granted literature
- US20130249406A1 LED Emitting Device and Driving Method Thereof Public/Granted day:2013-09-26
Information query
