发明名称 |
LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE |
摘要 |
An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≦m≦n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer. |
申请公布号 |
US2016240808(A1) |
申请公布日期 |
2016.08.18 |
申请号 |
US201615138565 |
申请日期 |
2016.04.26 |
申请人 |
Semiconductor Energy Laboratory Co., Ltd. |
发明人 |
NOWATARI Hiromi;SEO Satoshi;OHSAWA Nobuharu;USHIKUBO Takahiro;TSUTSUI Tetsuo |
分类号 |
H01L51/50 |
主分类号 |
H01L51/50 |
代理机构 |
|
代理人 |
|
主权项 |
1. (canceled) |
地址 |
Atsugi-shi JP |