Title:
発光装置
Document Type and Number:
Japanese Patent JP6982535
Kind Code:
B2
Abstract:
To suppress a side lobe generated due to diffraction being irregularities in a light source from emitted light which is emitted from a light-emitting device utilizing localized surface plasmon resonance in a nano-antenna and to improve a light directional characteristic in a vertical direction.SOLUTION: A light-emitting device 1 comprises: a light-emitting element 12 that emits primary light; a base material 14 that is placed at an upper part of the light-emitting element 12; a wavelength conversion material 150 that performs wavelength conversion of the primary light to emit secondary light having a wavelength different from the primary light; and a plurality of nano-antennas 16 that generate an electric field by means of localized surface plasmon resonance due to injection of the secondary light and that are arranged on the base material close to the wavelength conversion material 150 such that a directional characteristic of the secondary light emitted from the wavelength conversion material 150 is changed by the electric field. Each of the plurality of nano-antennas 16 includes a plurality of metal materials 161 and 162 that are arranged to overlap in a plan view on the base material 14, and a dielectric 163 arranged between the plurality of metal materials 161 and 162.SELECTED DRAWING: Figure 2
Inventors:
Takashi Akabane
Youichi Nonogaki
Youichi Nonogaki
Application Number:
JP2018065675A
Publication Date:
December 17, 2021
Filing Date:
March 29, 2018
Export Citation:
Assignee:
CITIZEN WATCH CO.,LTD.
International Classes:
H01L33/58; H01L33/50
Domestic Patent References:
| JP2014508379A | ||||
| JP2013177665A | ||||
| JP2016534554A | ||||
| JP2017517891A | ||||
| JP2016535304A | ||||
| JP2017519337A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Tomohiro Minamiyama
Tsuyoshi Miura
Endo Riki
Shinji Mitsuhashi
Tomohiro Minamiyama
Tsuyoshi Miura
Endo Riki