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Patent Searching and Data


Title:
LIGHT-EMITTING DEVICE, MERCURY-FREE FLUORESCENT LAMP AND WHITE LIGHT-EMITTING DIODE USING ANTHRACENE CRYSTALS
Document Type and Number:
WIPO Patent Application WO/2015/046812
Kind Code:
A1
Abstract:
Disclosed are a light-emitting device, a mercury-free fluorescent lamp and a white light-emitting diode using anthracene crystals. Anthracene crystals in a state of nano-crystal powder, which emit white light upon application of energy, are present within the disclosed light-emitting device, mercury-free fluorescent lamp and white light-emitting diode using anthracene crystals. The light-emitting device using anthracene crystals has a wide range of light-emitting spectrum, thereby providing varied and natural color reproduction. In particular, the light-emitting device emits light in a wide wavelength region from short wavelength regions to long wavelength regions and is thus suitable for use as a white light emitting device. The mercury-free fluorescent lamp is capable of emitting light without using mercury because the mercury-free fluorescent lamp generates light by directing ultraviolet rays generated from discharge gas to an anthracene nano-crystal powder layer. Further, the mercury-free fluorescent lamp does not emit harmful ultraviolet rays, and thus is eco-friendly. The white light-emitting diode has a simple structure and can be manufactured by a simple manufacturing method because the white light-emitting diode generates light by directing ultraviolet rays emitted from a UV emitting unit to anthracene crystals in a state of nano-crystal powder.

Inventors:
LEE DONG HWA (KR)
KIM BYOUNG GUK (KR)
Application Number:
PCT/KR2014/008714
Publication Date:
April 02, 2015
Filing Date:
September 18, 2014
Export Citation:
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Assignee:
ANTHRACENE CO LTD (KR)
LEE DONG HWA (KR)
KIM BYOUNG GUK (KR)
International Classes:
H01J61/30; H01L33/52
Foreign References:
JP2011505479A2011-02-24
JPH0529701A1993-02-05
KR20070050970A2007-05-16
KR20090028174A2009-03-18
US6600175B12003-07-29
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
특허법인 태평양 (KR)
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