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1. (WO2018045787) ORGANIC ELECTROLUMINESCENT DEVICE

Pub. No.:    WO/2018/045787    International Application No.:    PCT/CN2017/088940
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Tue Jun 20 01:59:59 CEST 2017
IPC: H01L 51/50
Applicants: BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
Inventors: FAN, Xing
樊星
YAN, Guang
闫光
Title: ORGANIC ELECTROLUMINESCENT DEVICE
Abstract:
An organic electroluminescent device. The organic electroluminescent device comprises: a light emitting layer, the light emitting layer comprising a plurality of light emitting regions (110) arranged in an array, each light emitting region (110) being an organic electroluminescent region; an electron transport layer (310), a cathode (320) and a transflective layer (330) sequentially provided in a first direction from the light emitting layer toward the light emitting side of the organic electroluminescent device with the light emitting layer as a starting point; and a hole transport layer, an anode (220) and a reflective layer (230) sequentially provided in a second direction opposite to the first direction with the light emitting layer as the starting point. In addition, in the projection area of at least one light emitting region (110) on the hole transport layer, the hole transport layer has at least two portions of different thicknesses for selecting a wavelength range of light emitted by the at least one light emitting region (110) and/or intensifying the emitted light. With the aid of the organic electroluminescent device, the problems of brightness reduction and color deviation of an organic electroluminescent device caused by a micro-cavity structure under a large viewing angle are solved.