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Title:
PURPLISH RED LIGHT EMITTING DIODE
Document Type and Number:
Japanese Patent JP2004311822
Kind Code:
A
Abstract:

To provide a purplish red light emitting diode capable of obtaining purplish red light or pink light.

A fluorescent layer consisting of red fluorescent powder whose components are 6MgO-As2O5:Mn or 3.5MgO-0.5MgF2-GeO2:Mn is applied to purple light emitting diode crystal grains of about 405-430nm wavelength to coat the purple light emitting diode crystal grains, a red fluorescent layer is excited by light of about 405-430nm wavelength generated from the purple light emitting diode crystal grains to generate red light of about 650nm wavelength, and purplish red light is obtained by synthesizing red light and purple light originally generated from the purple light emitting diode crystal grains.


Inventors:
CHEN HSING
Application Number:
JP2003105250A
Publication Date:
November 04, 2004
Filing Date:
April 09, 2003
Export Citation:
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Assignee:
SOLIDLITE CORP
International Classes:
C09K11/66; C09K11/74; H01L33/50; H01L33/62; (IPC1-7): H01L33/00; C09K11/66; C09K11/74
Domestic Patent References:
JP2001352104A2001-12-21
JP2002164576A2002-06-07
JP2000150960A2000-05-30
JP2000150961A2000-05-30
JP2001144332A2001-05-25
JP2002314136A2002-10-25
JP2001053336A2001-02-23
JP2002134790A2002-05-10
JP2000244021A2000-09-08
JP2002076445A2002-03-15
JP2002324916A2002-11-08
Foreign References:
WO1998005078A11998-02-05
Attorney, Agent or Firm:
Seishiro Suzuki