发明授权
US09271368B2 Method and apparatus for providing a passive color control scheme using blue and red emitters
有权
用于使用蓝色和红色发射器提供无源颜色控制方案的方法和装置
- 专利标题: Method and apparatus for providing a passive color control scheme using blue and red emitters
- 专利标题(中): 用于使用蓝色和红色发射器提供无源颜色控制方案的方法和装置
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申请号: US13708916申请日: 2012-12-07
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公开(公告)号: US09271368B2公开(公告)日: 2016-02-23
- 发明人: Tao Tong
- 申请人: Tao Tong
- 申请人地址: US CA Livermore
- 专利权人: Bridgelux, Inc.
- 当前专利权人: Bridgelux, Inc.
- 当前专利权人地址: US CA Livermore
- 代理机构: JW Law Group
- 代理商 James M. Wu
- 主分类号: H01L27/15
- IPC分类号: H01L27/15 ; H05B33/08 ; H01L25/075 ; H01L33/62
摘要:
A lighting device capable of generating warm or neutral white light using blue light-emitting diodes (“LEDs”), red LEDs, and/or luminescent material that responds to blue LED emission is disclosed. The lighting device includes multiple first solid-state light-emitting structures (“SLSs”), second SLSs, and balancing resistor element. The first SLS such as a string of blue LED dies connected in series is able to convert electrical energy to blue optical light, which is partially turned into longer wavelength emission by the luminescent material. The second SLS such as a red LED die is configured to convert electrical energy to red optical light, wherein the second SLSs are connected in series. While the first SLSs and second SLSs are coupled in parallel, the balancing resistor element provides load balance for current redistribution between the first and second SLSs in response to fluctuation of operating temperature.
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