Title:
ORGANIC LIGHT-EMITTING DIODE AND PREPARATION METHOD THEREFOR, DISPLAY SUBSTRATE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/058531
Kind Code:
A1
Abstract:
An organic light-emitting diode and a preparation method therefor, and a display substrate and a display device comprising the organic light-emitting diode. The organic light-emitting diode comprises an anode (1), a hole injection layer (2), a hole transport layer (3), an organic light-emitting layer (4), an electron transport layer (5) and a cathode (7), wherein the cathode (7) is made of a transparent conductive oxide material, an energy level transition layer (6) is formed between the electron transport layer (5) and the cathode (7) and used for transiting an energy level between the electron transport layer (5) and the cathode (7) so as to reduce the difficulty of electron injection. Compared with an OLED device in the prior art, the electron injection of the OLED device is easier, and the operation voltage of the OLED device is substantially reduced, so that the service life of an OLED device is greatly prolonged, and thus the problems of short service life and over-large operation voltage of an OLED device due to the mismatch of TCO processing or energy levels are improved.
Inventors:
WU CHANG-YEN (CN)
Application Number:
PCT/CN2015/091918
Publication Date:
April 21, 2016
Filing Date:
October 14, 2015
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H01L51/50; H01L51/52; H01L51/54; H01L51/56
Foreign References:
| CN104393180A | 2015-03-04 | |||
| CN102195002A | 2011-09-21 | |||
| CN1697580A | 2005-11-16 | |||
| CN101197429A | 2008-06-11 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
中科专利商标代理有限责任公司 (CN)
中科专利商标代理有限责任公司 (CN)
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