发明名称 Lighting system
摘要 An object of the present invention is to provide a lighting system which uses a stacked light emitting element provided with a plurality of light emitting units and causes little change in emission color even after being used for a long time. A lighting system is provided, which includes a first light emitting element including a plurality of light emitting units; a second light emitting element; a first control means which controls light emission of the first light emitting element; and a second control means which controls light emission of the second light emitting element, where the first light emitting element emits light of a first emission color that is an initial emission color and a second emission color that is an emission color after change over time, and the second light emitting element emits light of a complementary color of the second emission color. With the above structure, color shift due to change over time can be suppressed.
申请公布号 US8154192(B2) 申请公布日期 2012.04.10
申请号 US20060580200 申请日期 2006.10.12
申请人 SAKATA JUNICHIRO;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. 发明人 SAKATA JUNICHIRO
分类号 H01J63/04;G09G3/10 主分类号 H01J63/04
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