公开(公告)号：US20160343776A1

公开(公告)日：2016-11-24

申请号：US15157163

申请日：2016-05-17

Applicant: LG Display Co., Ltd.

Inventor： JeongHaeng HEO ,  Jaeil SONG ,  SangGun LEE ,  SoYeon AHN

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L27/322 ,  H01L51/005 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/5004 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5271 ,  H01L51/5278 ,  H01L2251/552

Abstract: Provided is an organic light emitting device. The organic light emitting device includes a plurality of light emitting units laminated between a first electrode and a second electrode and each including an organic emitting layer, and a charge generation layer between the light emitting units. Further, the charge generation layer includes an N-type charge generation layer disposed to be in direct contact with an organic emitting layer of the adjacent light emitting unit and HOMO levels of the N-type charge generation layer and the organic emitting layer are regulated. Thus, a color change rate based on a viewing angle can be improved, and efficiency and a lifetime of the organic light emitting device can be improved.

Abstract translation: 提供了一种有机发光器件。 有机发光器件包括层叠在第一电极和第二电极之间并且各自包括有机发光层的多个发光单元和在发光单元之间的电荷产生层。 此外，电荷产生层包括与相邻发光单元的有机发光层直接接触并且调节N型电荷产生层和有机发光层的HOMO能级的N型电荷产生层。 因此，可以提高基于视角的颜色变化率，并且可以提高有机发光器件的效率和寿命。