Invention Grant
- Patent Title: Light emitting apparatus, display apparatus and method for controlling light emitting apparatus
- Patent Title (中): 发光装置,显示装置及控制发光装置的方法
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Application No.: US11802997Application Date: 2007-05-29
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Publication No.: US07700964B2Publication Date: 2010-04-20
- Inventor: Taiji Morimoto , Masanori Watanabe
- Applicant: Taiji Morimoto , Masanori Watanabe
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Morrison & Foerster LLP
- Priority: JP2006-148986 20060529
- Main IPC: H01L33/00
- IPC: H01L33/00

Abstract:
In a light emitting apparatus using LEDs, luminance and chromaticity of the LED changes largely due to a temperature change. Meanwhile, by using phosphors, it is possible to improve the stability of the luminance and chromaticity against the temperature change. However, color reproducibility of the light emitting apparatus decreases. Therefore, the light emitting apparatus includes a first LED, a second LED, a first phosphor which is excited by the second LED and emits light whose color is the same as or similar to a color of light emitted from the first LED, and a control circuit which controls a ratio between an emission intensity of the first LED and an emission intensity of the second LED.
Public/Granted literature
- US20070284994A1 Light emitting apparatus, display apparatus and method for controlling light emitting apparatus Public/Granted day:2007-12-13
Information query
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