Invention Grant
US09277605B2 Solid-state lighting apparatus and methods using current diversion controlled by lighting device bias states
有权
使用由照明装置偏置状态控制的电流分流的固态照明装置和方法
- Patent Title: Solid-state lighting apparatus and methods using current diversion controlled by lighting device bias states
- Patent Title (中): 使用由照明装置偏置状态控制的电流分流的固态照明装置和方法
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Application No.: US13235127Application Date: 2011-09-16
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Publication No.: US09277605B2Publication Date: 2016-03-01
- Inventor: Liqin Ni
- Applicant: Liqin Ni
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel & Sibley, P.A.
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B33/08
Abstract:
A lighting apparatus includes a string of light emitting diode (LED) sets coupled in series, each set including at least one LED. The apparatus further includes a plurality of current diversion circuits, respective ones of which are coupled to respective nodes of the string and configured to operate responsive to bias state transitions of respective ones of the LED sets. In some embodiments, a first one of the current diversion circuits is configured to conduct current via a first one of the LED sets and is configured to be turned off responsive to current through a second one of the LED sets. The first one of the current diversion circuits may be configured to conduct current responsive to a forward biasing of the first one of the LED sets and the second one of the current diversion circuit may be configured to conduct current responsive to a forward biasing of a second one of the LED sets.
Public/Granted literature
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