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Patent Searching and Data


Title:
LIGHT-EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/129071
Kind Code:
A1
Abstract:
When the color of light emitted from an LED chip (13b) has a strong tint of a color (A), the color of light emitted from an LED chip (13c) has substantially equivalent tint strengths of the color (A) and a color (B), and the color of light emitted from an LED chip (13a) has a slightly stronger color (A) tint than color (B) tint, the LED chips (13a, 13c) are supplied with the following from respective nozzles: a wavelength-conversion material (15a) containing a fluorescent substance for absorbing the wavelength of the color (A) and wavelength-converting the same into the color (C), a complementary color thereof (or a different color); and a wavelength-conversion material (15b) containing a fluorescent substance for absorbing the wavelength of the color (C) and wavelength-converting the same into the color (A). Therefore, it is possible to achieve the target light-emission color for the color of the light emitted from each wavelength-conversion unit (14a-14c), by changing the balance of the amounts of the supplied wavelength-conversion materials (15a, 15b), according to differences in the balance of strength between the color (A) tint and the color (B) tint in the LED chips (13a, 13c).

Inventors:
YOKOBAYASHI MASATO
YAMAMOTO OSAMU
KITABAYASHI MITSUO
KATOH TATSUYA
Application Number:
JP2013/052920
Publication Date:
September 06, 2013
Filing Date:
February 07, 2013
Export Citation:
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Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
International Classes:
H01L33/50
Domestic Patent References:
WO2012032691A12012-03-15
WO2012036486A22012-03-22
Foreign References:
JP2010103349A2010-05-06
JP2011243935A2011-12-01
JP2006196777A2006-07-27
JP2007066969A2007-03-15
JP2009272638A2009-11-19
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (AOYAMA & PARTNERS, IMP Building 3-7, Shiromi 1-chome, Chuo-ku, Osaka-sh, Osaka 01, 〒5400001, JP)
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Claims: