Invention Grant
- Patent Title: Semiconductor light emitting devices having selectable and/or adjustable color points and related methods
- Patent Title (中): 具有可选择和/或可调色点的半导体发光器件和相关方法
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Application No.: US13039572Application Date: 2011-03-03
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Publication No.: US08796952B2Publication Date: 2014-08-05
- Inventor: Antony Paul Van de Ven
- Applicant: Antony Paul Van de Ven
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel Sibley & Sajovec, P.A.
- Main IPC: H05B37/02
- IPC: H05B37/02
Abstract:
Semiconductor light emitting devices include a first string of at least one blue-shifted-yellow LED, a second string of at least one blue-shifted-green LED, and a third string of at least one LED that emits light in the red color range. These devices include at least a first circuit that is configured to provide an operating current to at least one of the first LED or the second LED and a second circuit that is configured to provide an operating current to the third light source. The drive currents supplied by the first and second circuits may be independently controlled to set a color point of the light emitting device at a desired color point.
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