公开(公告)号：US09806276B2

公开(公告)日：2017-10-31

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

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

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.

公开(公告)号：US10020348B2

公开(公告)日：2018-07-10

申请号：US15469779

申请日：2017-03-27

Applicant: LG Display Co., Ltd.

Inventor： Taeshick Kim ,  Younseok Kam ,  Seung Kim ,  Jaeseung Jang ,  Mingyu Lee

IPC: H01L27/32 ,  H01L25/04 ,  H01L51/50

CPC classification number: H01L27/3209 ,  H01L25/048 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5278

Abstract: An organic light emitting display device includes a first emission part between an anode and a cathode and a second emission part on the first emission part. At least one of the first emission part and the second emission part includes at least three emission layers emitting lights of different colors, and one of the at least three emission layers include a green emission layer including a phosphorescent material. Accordingly, a lifetime and color reproduction rate of the organic light emitting display device having green lifetime is enhanced.

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：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。