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公开(公告)号：US20180069055A1
公开(公告)日：2018-03-08
申请号：US15808027
申请日：2017-11-09
Applicant: LG DISPLAY CO., LTD.
Inventor： Taesun YOO , Hongseok CHOI , Mi-Young HAN , JungSoo PARK
CPC classification number: H01L27/3206 , H01L27/3209 , H01L27/3244 , H01L51/5024 , H01L51/504 , H01L51/5096
Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes an emission part which is disposed between an anode and a cathode and includes an emission layer. The emission part includes at least two emission layers emitting lights of different colors and a recombination zone movement prevention layer. The at least two emission layers each includes at least one host and at least one dopant, and the recombination zone movement prevention layer is disposed on a specific emission layer among the at least two emission layers.
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公开(公告)号：US20170237031A1
公开(公告)日：2017-08-17
申请号：US15582382
申请日：2017-04-28
Applicant: LG Display Co., Ltd.
Inventor： Seunghyun KIM , Hongseok CHOI , Sung Hoon PIEH , Tae Seok LIM
CPC classification number: H01L51/5044 , H01L27/3209 , H01L51/5004 , H01L51/504 , H01L51/5056 , H01L51/5206 , H01L51/5221 , H01L51/5265 , H01L51/5278 , H01L2251/558
Abstract: An organic light emitting display device comprises first and second electrodes facing each other on a substrate; and three emission portions arranged between the first electrode and the second electrode, wherein at least one among the three emission portions includes two emitting layers, and the first, second and third emission portions being collectively configured as a TOL-FESE (Thickness of Organic Layers between the First Electrode and the Second Electrode) structure in which thicknesses of organic layers between the first electrode and the second electrode are different from one another, each organic layer having a specified thickness that provides the organic light emitting display device having the TOL-FESE structure with improved red efficiency or blue efficiency and minimized color shift rate with respect to a viewing angle, when compared to an organic light emitting display device that lacks the TOL-FESE structure.
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公开(公告)号：US20170084855A1
公开(公告)日：2017-03-23
申请号：US15189739
申请日：2016-06-22
Applicant: LG DISPLAY CO., LTD.
Inventor： Younseok KAM , Chang Wook HAN , Hongseok CHOI , SoYeon AHN , Taeshick KIM , Mingyu LEE
CPC classification number: H01L51/504 , H01L27/3209 , H01L27/3244 , H01L51/5004 , H01L51/5056 , H01L51/5064 , H01L51/5265 , H01L51/5278 , H01L2251/552 , H01L2251/558
Abstract: Disclosed is an organic light emitting display (OLED) apparatus with improved efficiency and lifespan, wherein the OLED apparatus includes an anode, a cathode, and a light-emitting unit disposed in-between, wherein the light-emitting unit includes a first emission layer, and a first hole transporting layer having first and second materials, wherein the first material has a higher hole mobility than that of the second material so as to improve a transfer of holes from the first hole transporting layer to the first emission layer, and the second material has a higher triplet energy level than that of the first material so as to reduce a transfer of electrons from the first emission layer to the first hole transporting layer.
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公开(公告)号：US20170054103A1
公开(公告)日：2017-02-23
申请号：US15161988
申请日：2016-05-23
Applicant: LG DISPLAY CO., LTD.
Inventor： YoungKwan JUNG , Hongseok CHOI , Seunghyun KIM
CPC classification number: H01L51/5228 , H01L27/3244 , H01L51/5072 , H01L51/5092 , H01L51/5212 , H01L51/5218 , H01L51/56 , H01L2227/323 , H01L2251/558
Abstract: A display apparatus according to an embodiment can include a first electrode, a plurality of organic layers, a second electrode, and a metal layer disposed on a particular organic layer among the plurality of organic layers. The metal layer is configured to protect the particular organic layer from being damaged when it is exposed to a non-vacuum environment at least once during processes of stacking the organic layers on the first electrode and the second electrode on the organic layers in a vacuum environment, thereby suppressing a rise in the driving voltage of the display apparatus. Accordingly, the problems that the driving voltage of the display apparatus increases and the lifespan is shortened can be addressed.
Abstract translation: 根据实施例的显示装置可以包括设置在多个有机层中的特定有机层上的第一电极，多个有机层，第二电极和金属层。 金属层被配置为当真空环境中的第一电极和有机层上的第二电极堆叠有机层的过程中至少一次暴露于非真空环境时，保护特定有机层不被损坏 从而抑制显示装置的驱动电压的上升。 因此，可以解决显示装置的驱动电压增加并且寿命缩短的问题。
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