Invention Grant
US08455887B2 LED illumination device for reducing occurrence of color heterogeneity
有权
LED照明装置，用于减少颜色异质性的发生
- Patent Title: LED illumination device for reducing occurrence of color heterogeneity
- Patent Title (中): LED照明装置，用于减少颜色异质性的发生
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Application No.: US12659915Application Date: 2010-03-25
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Publication No.: US08455887B2Publication Date: 2013-06-04
- Inventor: Tomoki Shirakawa , Yoko Matsubayashi
- Applicant: Tomoki Shirakawa , Yoko Matsubayashi
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Bacon & Thomas PLLC
- Priority: JP2009-076147 20090326
- Main IPC: H01L29/18
- IPC: H01L29/18 ; H01L33/00
Abstract:
An LED illumination device includes: a substrate; one or more red LED chips arranged on the substrate; a plurality of blue LED chips arranged on the substrate; and a plurality of third-color LED chips arranged on the substrate. Respective centers of the red LED chips are arranged on a circumference of a first circle having as its center a point on the substrate, respective centers of the blue LED chips being arranged on the circumference of a second circle concentric with and greater than the first circle, respective centers of the third-color LED chips being arranged in a region between the first circle and the second circle.
Public/Granted literature
- US20100244061A1 LED illumination device Public/Granted day:2010-09-30
Information query
IPC分类:
