Title:
発光装置
Document Type and Number:
Japanese Patent JP6583572
Kind Code:
B2
Abstract:
A light emitting device includes: a substrate (40); blue light emitting elements (10) arranged on the main surface of the substrate (40); and a phosphor sheet (30) containing a phosphor that is excited by emission light from the blue light emitting elements and emits excitation light, the phosphor sheet (30) being disposed above the blue light emitting elements (30), wherein the blue light emitting elements (10) includes first blue light emitting elements (11) which emit first emission light having a first wavelength taken as a peak wavelength of a light emission spectrum, and second blue light emitting elements (12) which emit second emission light having a second wavelength taken as a peak wavelength of a light emission spectrum, and the second wavelength being a longer wavelength than the first wavelength by a wavelength difference of at least 10 nm.
Inventors:
Tsutomu Yokota
Takaya Ueno
Masaki Hoshino
Yoshinori Tanaka
Murofushi Hitoshi
Takaya Ueno
Masaki Hoshino
Yoshinori Tanaka
Murofushi Hitoshi
Application Number:
JP2018565086A
Publication Date:
October 02, 2019
Filing Date:
January 31, 2017
Export Citation:
Assignee:
Sanken Electric Co., Ltd.
International Classes:
H01L33/50
Domestic Patent References:
| JP2016219519A | ||||
| JP2016162860A | ||||
| JP2016127145A | ||||
| JP2016129229A |
Foreign References:
| WO2016159141A1 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu