公开(公告)号：US12108618B2

公开(公告)日：2024-10-01

申请号：US17560586

申请日：2021-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Mi Young Han ,  Min Hyeong Hwang ,  Jung Keun Kim

IPC: H10K50/13 ,  H10K59/12 ,  H10K59/38 ,  H10K102/00

CPC classification number: H10K50/131 ,  H10K59/12 ,  H10K59/38 ,  H10K2102/3035 ,  H10K2102/351

Abstract: A white light emitting device and a display device using the same which can prevent a change in luminance due to change in viewing angle, improve color deviation, and lower a driving voltage at the same time, through a change in an internal stack structure and a thickness an emission-side electrode with regard to a vertical distance from a lower surface of the first electrode to a lower surface of the second electrode.

公开(公告)号：US09224967B2

公开(公告)日：2015-12-29

申请号：US14109634

申请日：2013-12-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Sun Yoo ,  Hwa Kyung Kim ,  Hong Seok Choi ,  Jae Il Song ,  Mi Young Han ,  Shin Han Kim ,  Hye Min Oh

IPC: H01L51/50

CPC classification number: H01L51/5028 ,  H01L27/3209 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/5361 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/558

Abstract: A white organic light emitting device includes: first and second electrodes formed to face each other on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked between the first and second electrodes; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, a second electron transportation layer and an electron injection layer which are stacked between the first stack and the second electrode; and a charge generation layer interposed between the first and second stacks and configured to adjust a charge balance between the two stacks.

Abstract translation: 白色有机发光器件包括：在基板上彼此面对形成的第一和第二电极; 配置有层叠在第一和第二电极之间的空穴注入层，第一空穴传输层，第一发光层和第一电子传输层的第一堆叠; 配置有第二空穴传输层，第二发光层，第三发光层，第二电子传输层和电子注入层的第二堆叠，堆叠在第一堆叠和第二电极之间; 以及插入在所述第一和第二堆叠之间并且被配置为调整所述两个堆叠之间的电荷平衡的电荷产生层。

公开(公告)号：US20230255078A1

公开(公告)日：2023-08-10

申请号：US18078886

申请日：2022-12-09

Applicant: LG Display Co., Ltd.

Inventor： Wook Song ,  Yu Jeong Lee ,  Byung Gun Ahn ,  Mi Young Han ,  Chun Ki Kim ,  Sae Mi Park ,  Jung Keun Kim ,  Byung Soo Kim

IPC: H10K59/35 ,  H10K50/13 ,  H10K50/17 ,  H10K50/16 ,  H10K59/38 ,  C07D401/14 ,  C07D209/08

CPC classification number: H01L27/3213 ,  C07D209/08 ,  C07D401/14 ,  H01L27/322 ,  H01L51/504 ,  H01L51/5072 ,  H01L51/5092

Abstract: A light emitting device is capable of improving the efficiency in the visible light wavelength in a structure in which light extraction efficiency is improved through a microlens array. The light emitting display device includes a substrate having a plurality of subpixels, each comprising a light emitting region and a non-light emitting region, an over-coating layer having irregularities on a surface thereof in at least the light emitting region, and a light emitting device disposed on the surface of the over-coating layer, the light emitting device comprising an anode and a cathode facing each other, and at least two blue stacks and a phosphorescent stack between the anode and the cathode, at least one of the blue stacks is the blue light emitting layer and includes an electron transport layer including a first material, the electron transport layer being in contact with the blue light emitting layer.

公开(公告)号：US10741781B2

公开(公告)日：2020-08-11

申请号：US16534816

申请日：2019-08-07

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Sun Yoo ,  Hwa Kyung Kim ,  Hong Seok Choi ,  Jae Il Song ,  Mi Young Han ,  Shin Han Kim ,  Hye Min Oh

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

Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generation layer interposed between the second and third stacks.

公开(公告)号：US10418577B2

公开(公告)日：2019-09-17

申请号：US16012267

申请日：2018-06-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Sun Yoo ,  Hwa Kyung Kim ,  Hong Seok Choi ,  Jae Il Song ,  Mi Young Han ,  Shin Han Kim ,  Hye Min Oh

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

Abstract: An organic light emitting device can include first and second electrodes formed to face each other on a substrate; a first stack interposed between the first and second electrode and configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack interposed between the first stack and the second electrode and configured with a second hole transportation layer, a second light emission layer, a third light emission layer and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and a first charge generation layer interposed between the first and second stacks and a second charge generation layer interposed between the second and third stacks.

公开(公告)号：US10026915B2

公开(公告)日：2018-07-17

申请号：US14949184

申请日：2015-11-23

Applicant: LG Display Co., Ltd.

Inventor： Tae Sun Yoo ,  Hwa Kyung Kim ,  Hong Seok Choi ,  Jae Il Song ,  Mi Young Han ,  Shin Han Kim ,  Hye Min Oh

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

Abstract: A white organic light emitting device can include first and second electrodes on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and charge generation layers interposed between the first and second stacks and between the second and third stacks and configured to adjust a charge balance between the stacks.