发明名称 |
ORGANIC LIGHT EMITTING DISPLAY DEVICE |
摘要 |
Disclosed is an organic light emitting display device that comprises a first light emitting unit between a first electrode and a second electrode, the first light emitting unit including a first hole transporting layer and a first light emitting layer; and a second light emitting unit between the first light emitting unit and the second electrode, the second light emitting unit including a second hole transporting layer and a second light emitting layer that emits a light of the same color as a light emitted by the first light emitting layer. An increase in driving voltage caused by a shift of an emission zone in the first light emitting layer or the second light emitting layer by prolonged driving is minimized which solves a problem of increased power consumption and improves the lifetime of the organic light emitting display device. |
申请公布号 |
US2017033307(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
US201615135238 |
申请日期 |
2016.04.21 |
申请人 |
LG DISPLAY CO., LTD. |
发明人 |
CHOI Dongil;PARK EunJung;MOON Sangkyoung |
分类号 |
H01L51/50;H01L27/32 |
主分类号 |
H01L51/50 |
代理机构 |
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代理人 |
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主权项 |
1. An organic light emitting display device comprising:
a first light emitting unit between a first electrode and a second electrode, the first light emitting unit including a first hole transporting layer and a first light emitting layer; and a second light emitting unit between the first light emitting unit and the second electrode, the second light emitting unit including a second hole transporting layer and a second light emitting layer that emits a light of the same color as a light emitted by the first light emitting layer, wherein the first hole transporting layer and the second hole transporting layer have a thickness ratio for minimizing an increase in driving voltage caused by a shift of an emission zone in the first light emitting layer or in the second light emitting layer due to prolonged driving. |
地址 |
Seoul KR |