Title:
LIGHT-EMITTING DEVICE
Document Type and Number:
Japanese Patent JP3717879
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting device having a plurality of light emitting layers with high luminous efficiency and a long luminous life.
SOLUTION: In this light-emitting device (an organic electroluminescent device), film thicknesses d1 to d6 of layers 1 to 6 are set by using formula (1) so that the light emitting intensity obtained by combining light emission caused by an orange light emitting layer 5 and light emission caused by a blue light emitting layer 6 is increased. In formula (1), m1, m2, m3: a positive integer of 1 or more (a decimal fraction of m1, m2, m3 is 0.2 or less or 0.8 or more), n: the index of refraction, L: the optical film thickness range, λ: a maximum wavelength band.
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Inventors:
Hiroshi Kamino
Yuji Hamada
Kazuki Nishimura
Yuji Hamada
Kazuki Nishimura
Application Number:
JP2002287418A
Publication Date:
November 16, 2005
Filing Date:
September 30, 2002
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
H01J1/68; H01L51/50; H01L51/52; H05B33/14; H05B33/24; H05B33/26; (IPC1-7): H05B33/24; H05B33/14; H05B33/26
Domestic Patent References:
| JP2002134273A | ||||
| JP2003272860A | ||||
| JP2000243563A | ||||
| JP2000323277A |
Attorney, Agent or Firm:
Hirokazu Miyazono