Title:
LIGHT EMITTING DEVICE, DISPLAY DEVICE, PHOTOELECTRIC CONVERSION DEVICE, ELECTRONIC APPARATUS, ILLUMINATION DEVICE, AND MOBILE BODY
Document Type and Number:
WIPO Patent Application WO/2022/220103
Kind Code:
A1
Abstract:
A light emitting device according to the present disclosure comprises an organic light emitting element 100 having a reflective surface S2, a first electrode 2, an organic layer 3 including a light emitting layer 31, a second electrode 4, and a light extraction structure 10. The light emitting layer 31 includes a first light emitting material. A wavelength included in a peak wavelength range of a PL spectrum of the first light emitting material is a first wavelength λ1. An optical distance Lb between the light emitting layer 31 and the reflective surface S2 is set to a value that allows rays of light having the first wavelength λ1 and respectively traveling in a first direction D1 and in a second direction D2 to be intensified, the first direction D1 and the second direction D2 intersecting a direction normal to a main surface S1 of a substrate 1. The thus intensified rays of light respectively reach a first inclined portion 21a and a second inclined portion 21b of the light extraction structure 10, and are then respectively emitted in a third direction D3 and in a fourth direction D4 that are substantially orthogonal to the main surface S1 of the substrate 1.
Inventors:
ISHIZUYA KOJI (JP)
KAJIMOTO NORIFUMI (JP)
MATSUDA YOJIRO (JP)
SANO HIROAKI (JP)
ITO TAKAYUKI (JP)
TAKAHASHI TETSUO (JP)
KAJIMOTO NORIFUMI (JP)
MATSUDA YOJIRO (JP)
SANO HIROAKI (JP)
ITO TAKAYUKI (JP)
TAKAHASHI TETSUO (JP)
Application Number:
PCT/JP2022/015500
Publication Date:
October 20, 2022
Filing Date:
March 29, 2022
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H05B33/24; G02B3/00; H01L51/50; H05B33/02
Domestic Patent References:
| WO2001039554A1 | 2001-05-31 |
Foreign References:
| JP2006278257A | 2006-10-12 | |||
| JPH04192290A | 1992-07-10 | |||
| JP2004039500A | 2004-02-05 | |||
| JP2020136260A | 2020-08-31 | |||
| JP2021039183A | 2021-03-11 | |||
| JP2007115679A | 2007-05-10 | |||
| JP2021067636A | 2021-04-30 | |||
| JP2022018102A | 2022-01-26 |
Attorney, Agent or Firm:
ABE Takuma et al. (JP)
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