发明名称 |
Microcavity OLED device |
摘要 |
A microcavity OLED device comprising (a) a substrate; (b) a bottom-electrode layer disposed over one surface of the substrate; (c) an organic EL element disposed over the bottom-electrode layer; and (d) a top-electrode layer disposed over the organic EL element; wherein one of the electrode layers is semitransparent and reflective and the other one is essentially opaque and reflective; and wherein the thickness of the semitransparent electrode layer and the relative location of the light emitting layers are selected to provide a luminance output of the microcavity OLED device at least 1.25 times that of a similar top-emitting OLED device or at least 1.75 times that of a similar bottom-emitting OLED device using similar OLED materials and having a transparent electrode in place of the semitransparent electrode. A high-index absorption-reduction layer may also be included next to the semitransparent electrode layer outside the microcavity to further improve the performance of the microcavity OLED device.
|
申请公布号 |
US2004155576(A1) |
申请公布日期 |
2004.08.12 |
申请号 |
US20040771885 |
申请日期 |
2004.02.04 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
TYAN YUAN-SHENG;SHORE JOEL D.;FARRUGGIA GIUSEPPE;RAYCHAUDHURI PRANAB K.;MADATHIL JOSEPH K.;COK RONALD S. |
分类号 |
H01L27/32;H01L51/50;H01L51/52;(IPC1-7):H01J1/62 |
主分类号 |
H01L27/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|