Title:
発光素子
Document Type and Number:
Japanese Patent JP7194072
Kind Code:
B2
Abstract:
To provide a light-emitting device having a low drive voltage.SOLUTION: A light-emitting device includes an anode, a cathode, a first organic layer formed between the anode and the cathode, and a second organic layer formed between the anode and the first organic layer. The first organic layer is a layer containing a first high molecular compound and the second organic layer is a layer containing a second high molecular compound. When it is defined that the total number of non-cross-linkable constitutional units expressed by an expression (X) in the first high molecular compound and the total number of non-cross-linkable constitutional units expressed by an expression (X) in the second high molecular compound are respectively Xand Xand the total number of non-cross-linkable constitutional units expressed by an expression (Z) in the first high molecular compound and the total number of non-cross-linkable constitutional units expressed by an expression (Z) in the second high molecular compound are respectively Zand Z, at least one of an expression (i) X>X, an expression (ii) Z>Zand an expression (iii) X+Z>X+Zis satisfied.SELECTED DRAWING: None
Inventors:
Toshiaki Sasada
Application Number:
JP2019082910A
Publication Date:
December 21, 2022
Filing Date:
April 24, 2019
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
H01L51/50; C08G61/12; C09K11/06
Domestic Patent References:
| JP2017125087A | ||||
| JP2016012551A | ||||
| JP2016503087A |
Foreign References:
| WO2009123269A1 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
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