公开(公告)号：US09118032B2

公开(公告)日：2015-08-25

申请号：US14307018

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： Shinhan Kim ,  SeungRyong Joung ,  So Yeon Ahn ,  Taeshick Kim

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

CPC classification number: H01L51/504 ,  H01L27/3209 ,  H01L27/322 ,  H01L51/5096 ,  H01L51/5278

Abstract: Disclosed is an organic light emitting device that comprises first and second electrodes; first and second stacks arranged between the first electrode and the second electrode, the first and second stacks respectively emitting colors different from each other; and an intermediate layer arranged between the first stack and the second stack, wherein the intermediate layer includes a first intermediate layer arranged adjacent to the first stack to provide electrons to the first stack, and a second intermediate layer arranged adjacent to the second stack to provide holes to the second stack, and wherein the second intermediate layer includes a P-doping charge generating layer arranged on the first intermediate layer and a layer having a hole transporting characteristic and formed on the P-doping charge generating layer.

Abstract translation: 公开了一种包括第一和第二电极的有机发光器件; 布置在第一电极和第二电极之间的第一和第二堆叠，分别发射彼此不同的颜色的第一和第二堆叠; 以及布置在所述第一堆叠和所述第二堆叠之间的中间层，其中所述中间层包括与所述第一堆叠相邻布置以向所述第一堆叠提供电子的第一中间层，以及邻近所述第二堆叠布置的第二中间层，以提供 并且其中第二中间层包括布置在第一中间层上的P掺杂电荷产生层和在P掺杂电荷产生层上形成的具有空穴传输特性的层。

公开(公告)号：US20150001499A1

公开(公告)日：2015-01-01

申请号：US14307018

申请日：2014-06-17

Applicant: LG Display Co., Ltd.

Inventor： Shinhan KIM ,  SeungRyong Joung ,  So Yeon Ahn ,  Taeshick Kim

IPC: H01L51/50

CPC classification number: H01L51/504 ,  H01L27/3209 ,  H01L27/322 ,  H01L51/5096 ,  H01L51/5278

Abstract: Disclosed is an organic light emitting device that comprises first and second electrodes; first and second stacks arranged between the first electrode and the second electrode, the first and second stacks respectively emitting colors different from each other; and an intermediate layer arranged between the first stack and the second stack, wherein the intermediate layer includes a first intermediate layer arranged adjacent to the first stack to provide electrons to the first stack, and a second intermediate layer arranged adjacent to the second stack to provide holes to the second stack, and wherein the second intermediate layer includes a P-doping charge generating layer arranged on the first intermediate layer and a layer having a hole transporting characteristic and formed on the P-doping charge generating layer.

Abstract translation: 公开了一种包括第一和第二电极的有机发光器件; 布置在第一电极和第二电极之间的第一和第二堆叠，分别发射彼此不同的颜色的第一和第二堆叠; 以及布置在所述第一堆叠和所述第二堆叠之间的中间层，其中所述中间层包括与所述第一堆叠相邻布置以向所述第一堆叠提供电子的第一中间层，以及邻近所述第二堆叠布置的第二中间层，以提供 并且其中第二中间层包括布置在第一中间层上的P掺杂电荷产生层和在P掺杂电荷产生层上形成的具有空穴传输特性的层。

公开(公告)号：US10290826B2

公开(公告)日：2019-05-14

申请号：US15169269

申请日：2016-05-31

Applicant: LG DISPLAY CO., LTD.

Inventor： JiYoung Kim ,  Jaeil Song ,  Younseok Kam ,  Taeshick Kim

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

Abstract: Discussed is an organic light emitting display device. The organic light emitting display device according to an embodiment includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer, a first emission layer, and a first electron transport layer, and the second emission part includes a second hole transport layer, a second emission layer, and a second electron transport layer. The second emission layer includes at least two zones including a hole-type host and an electron-type host, and a zone among the at least two zones closer to the first electrode than the second electrode, a ratio of the mixed host to the electron-type host is higher than a ratio of the mixed host to the hole-type host in the zone.

公开(公告)号：US10153451B2

公开(公告)日：2018-12-11

申请号：US15465975

申请日：2017-03-22

Applicant: LG Display Co., Ltd.

Inventor： Taeshick Kim ,  Younseok Kam ,  Ki-Woog Song

IPC: H01L51/50

Abstract: An organic light emitting device includes a first emitting part on an anode, the first emitting part including a first emission layer and a first hole transport layer a second emitting part on the first emitting part, the second emitting part including a second emission layer and a second hole transport layer; a third emitting part on the second emitting part including a third emission layer and a third hole transport layer; and a cathode on the third emitting part. The third emitting part further includes a fourth emission layer to emit light having a same color as the third emission layer and includes a dopant and a mixed host of at least two hosts, and a fourth hole transport layer provided on the third hole transport layer while in contact with the third emission layer, and has a hole mobility lower than that of the third hole transport layer.

公开(公告)号：US09786863B2

公开(公告)日：2017-10-10

申请号：US15409029

申请日：2017-01-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Taeil Kum ,  Gwijeong Cho ,  KiWoog Song ,  Taeshick Kim

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L51/002 ,  H01L51/504 ,  H01L51/5278 ,  H01L2251/558

Abstract: Provided is a white organic light emitting device which can improve abnormal light emission and efficiency and reliability of the device.A white organic light emitting device according to an exemplary embodiment of the present invention includes: a first light emitting unit including a first emitting layer between a first electrode and a second electrode; a second light emitting unit including a second emitting layer on the first light emitting unit; and a charge generation layer between the first light emitting unit and the second light emitting unit, and a volume of a metal in the charge generation layer is 1.0% or less of the total volume of the charge generation layer.

公开(公告)号：US20170117331A1

公开(公告)日：2017-04-27

申请号：US15160256

申请日：2016-05-20

Applicant: LG Display Co., Ltd.

Inventor： TaeSeok Lim ,  Taeshick Kim ,  Seung Kim ,  Jaeseung Jang

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

CPC classification number: H01L27/3211 ,  H01L27/3209 ,  H01L27/322 ,  H01L27/3244 ,  H01L51/5036 ,  H01L51/5044 ,  H01L51/5209 ,  H01L51/5225

Abstract: An organic light emitting display device reduces a grayscale-based color difference of the organic light emitting display device. The organic light emitting display device includes opposite first and second electrodes on a substrate and a plurality of emission parts between the first and second electrodes. At least one among the plurality of emission parts includes a first emission layer and a second emission layer having different wavelength ranges. A dopant content in the first emission layer is lower than a dopant content in the second emission layer.

公开(公告)号：US09406908B2

公开(公告)日：2016-08-02

申请号：US14316169

申请日：2014-06-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Shinhan Kim ,  JeongHaeng Heo ,  Taeshick Kim

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

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L51/5044

Abstract: Disclosed is an organic light emitting device comprising an anode; a cathode; and a plurality of stacks formed between the anode and the cathode. The plurality of stacks respectively emit their respective light of colors different from one another, wherein the plurality of stacks include a stack emitting blue light and a stack emitting mixed light of blue light and yellow-green to red light. Because the organic light emitting device includes a stack emitting blue light and a stack emitting mixed light of yellow-green to red light and blue light, blue light having a relatively low efficiency may be emitted from the two stacks, whereby overall light emitting efficiency is improved.

Abstract translation: 公开了一种包括阳极的有机发光器件; 阴极 以及形成在阳极和阴极之间的多个堆叠。 多个堆叠分别发射它们各自彼此不同的颜色的光，其中多个堆叠包括发射蓝光的堆叠和发射蓝光和黄绿色对红光的混合光的堆叠。 由于有机发光器件包括发射蓝光的叠层和发射黄绿色至红色和蓝色光的混合光的堆叠，因此可以从两个堆叠发射效率相对较低的蓝色光，从而整体发光效率为 改进。

公开(公告)号：US09281487B2

公开(公告)日：2016-03-08

申请号：US14339168

申请日：2014-07-23

Applicant: LG Display Co., Ltd.

Inventor： Shinhan Kim ,  Byungchul Ahn ,  Changwook Han ,  Dohyung Kim ,  Hongseok Choi ,  Sunghoon Pieh ,  Yoonheung Tak ,  Jeongdae Seo ,  Youngkwan Jung ,  Gwijeong Cho ,  Younseok Kam ,  Taeshick Kim

IPC: H01L51/00 ,  H01L51/50 ,  H01L27/32

CPC classification number: H01L51/5004 ,  H01L27/3209 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5278 ,  H01L2251/5376

Abstract: Provided is a white organic light emitting diode device, including first and second electrodes facing each other above a substrate, first and second charge generation layers formed between the first electrode and the second electrode, a first stack disposed between the first electrode and the first charge generation layer and including a first light emitting layer, a second stack disposed between the first charge generation layer and the second charge generation layer and including a second light emitting layer, and a third stack disposed between the second charge generation layer and the second electrode and including a third light emitting layer, wherein two of the first to third light emitting layers emit a blue light and the rest light emitting layer emits a yellow-green light.

Abstract translation: 提供了一种白色有机发光二极管装置，其包括在基板上面对的第一和第二电极，形成在第一电极和第二电极之间的第一和第二电荷产生层，设置在第一电极和第一电荷之间的第一堆叠 设置在第一电荷产生层和第二电荷产生层之间并包括第二发光层的第二叠层和设置在第二电荷产生层和第二电极之间的第三堆叠， 包括第三发光层，其中第一至第三发光层中的两个发射蓝色光，其余发光层发射黄绿色光。