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1. (WO2017149636) LIGHT-EMITTING DEVICE PRODUCTION METHOD AND LIGHT-EMITTING DEVICE

Pub. No.:    WO/2017/149636    International Application No.:    PCT/JP2016/056183
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Mar 02 00:59:59 CET 2016
IPC: H05B 33/10
H01L 51/50
H05B 33/12
H05B 33/22
Applicants: PIONEER CORPORATION
パイオニア株式会社
Inventors: TANAKA Akihiro
田中 章浩
Title: LIGHT-EMITTING DEVICE PRODUCTION METHOD AND LIGHT-EMITTING DEVICE
Abstract:
According to the present invention, a first light-emitting part (140a) has a hole insertion layer (121), a first hole transport layer (122a), and a first light-emitting layer (123a). A second light-emitting part (140b) has a hole insertion layer (121), a second hole transport layer (122b), a third hole transport layer (122c), a third hole transport layer (122c), and a second light-emitting layer (123b). The second hole transport layer (122b) is formed upon the hole insertion layer (121) and includes a first hole transport material. The third hole transport layer (122c) is formed upon the second hole transport layer (122b) and includes a second hole transport material. A fourth hole transport layer (122d) is formed upon the third hole transport layer (122c) and includes the same material as the second hole transport layer (122b), i.e. the second hole transport material. The third hole transport layer (122c) is formed using an application method, and the fourth hole transport layer (122d) is formed using a vapor deposition method.