公开(公告)号：US20160164040A1

公开(公告)日：2016-06-09

申请号：US14908337

申请日：2014-07-23

Applicant: JOLED INC.

Inventor： Keiko KURATA ,  Muneharu SATO ,  Tetsuro KONDOH ,  Shinichiro ISHINO

IPC: H01L51/52

CPC classification number: H01L51/5271 ,  H01L27/3211 ,  H01L51/5234 ,  H01L51/5265 ,  H01L51/5275

Abstract: Each of blue light emitting elements includes: a photoanode; a translucent cathode; an organic light emitting layer between the photoanode and the translucent cathode; a first functional layer between the organic light emitting layer and the photoanode; and a second functional layer between the organic light emitting layer and the translucent cathode, and has a resonator structure. The first functional layer has an optical film thickness of 48-62 nm. The translucent cathode is a stack of a first translucent conductive layer, a metal layer, and a second translucent conductive layer stacked in this order from the second functional layer side. The first translucent conductive layer has a refractivity of 2.0-2.4, and a film thickness of 85-97 nm. The metal layer has a refractivity different by 0 to 2.0 from that of the first translucent conductive layer, and has a film thickness of 2-22 nm.

Abstract translation: 蓝色发光元件中的每一个包括：光电阳极; 半透明阴极; 在光电阳极和半透明阴极之间的有机发光层; 有机发光层和光电阳极之间的第一功能层; 和有机发光层与半透明阴极之间的第二功能层，并具有谐振器结构。 第一功能层的光学膜厚度为48-62nm。 半透明阴极是从第二功能层侧依次层叠的第一透光性导电层，金属层和第二透光性导电层的叠层。 第一半透明导电层的折射率为2.0-2.4，膜厚为85-97nm。 金属层的折射率与第一透光性导电层的折射率相差0〜2.0，膜厚为2〜22nm。