Title:
LIGHT-EMITTING DEVICE, METHOD FOR MANUFACTURING SAME, AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2019/082817
Kind Code:
A1
Abstract:
Provided is a light-emitting device with which it is possible to reduce absorption of light by an electrode. A light-emitting device having a base and a laminate provided to the base. The laminate has a first semiconductor layer, a second semiconductor layer of a different conductivity type to the first semiconductor layer, and an active layer provided between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer is provided between the base and the active layer. Concave parts are provided on the laminate on the opposite side to the base side. A low refractive index part having a lower refractive index than that of the second semiconductor layer is provided to the concave parts. The depth of the concave parts is equal to or less than the distance between the active layer and the surface of the laminate on the opposite side to the base side. An electrode is provided to the laminate on the opposite side to the base side.
Inventors:
NAGAWA MICHIFUMI (JP)
ISHIZAWA SHUNSUKE (JP)
ISHIZAWA SHUNSUKE (JP)
Application Number:
PCT/JP2018/039049
Publication Date:
May 02, 2019
Filing Date:
October 19, 2018
Export Citation:
Assignee:
SEIKO EPSON CORP (JP)
International Classes:
H01S5/20; G02F1/13357; G03B21/00; G03B21/14; H01S5/30
Domestic Patent References:
| WO2013073485A1 | 2013-05-23 | |||
| WO2010047072A1 | 2010-04-29 |
Foreign References:
| JP2006179573A | 2006-07-06 | |||
| JP2012059790A | 2012-03-22 | |||
| JP2004095837A | 2004-03-25 | |||
| JP2006352148A | 2006-12-28 |
Attorney, Agent or Firm:
WATANABE Kazuaki et al. (JP)
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