Title:
発光装置
Document Type and Number:
Japanese Patent JP6522139
Kind Code:
B2
Abstract:
A light-emitting device is provided whose color mixing property and light emission efficiency are improved, while white light with high color rendering performance is ensured by means of four kinds of LED elements emitting red, green, blue, and white light respectively. The light-emitting device includes a phosphor layer containing a phosphor, a first LED element to emit white light in combination with fluorescence generated by excitation of the phosphor, a second LED element to emit red light, a third LED element to emit green light, a fourth LED element to emit blue light placed more distant from the phosphor layer compared to the second and third LED elements, a substrate with the first to fourth LED elements mounted on a common mounting surface, a resin frame surrounding at least a part of an outer circumference of the substrate, a sealing resin injected inside the resin frame and on the substrate to encapsulate the first to fourth LED elements, and a light-shielding component placed on an upper surface of the sealing resin to cover at least the first LED element.
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Inventors:
Yuhiko Hamada
Hirohiko Ishii
Hirohiko Ishii
Application Number:
JP2017540048A
Publication Date:
May 29, 2019
Filing Date:
September 20, 2016
Export Citation:
Assignee:
Citizen Electronics Co., Ltd.
CITIZEN WATCH CO.,LTD.
CITIZEN WATCH CO.,LTD.
International Classes:
H01L33/50
Domestic Patent References:
| JP2001024238A | ||||
| JP2004004626A | ||||
| JP2006310613A | ||||
| JP2011192738A |
Foreign References:
| CN102593115A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Tomohiro Minamiyama
Shinji Mitsuhashi
Tomohiro Minamiyama