公开(公告)号：US11024821B2

公开(公告)日：2021-06-01

申请号：US16225999

申请日：2018-12-19

Applicant: LG Display Co., Ltd.

Inventor： Seongsu Jeon ,  Seungryong Joung ,  Taewoo Jeon ,  Mi-Young Han

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

Abstract: One embodiment of the present disclosure provides an organic light-emitting element corresponding to each pixel region. The organic light-emitting element includes a hole transport layer, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a fourth light-emitting layer, and an electron transport layer. The first light-emitting layer includes a first dopant corresponding to a first color and a first host. The second light-emitting layer includes a second dopant corresponding to a second color different from the first color and a second host different from the first host. The third light-emitting layer includes the first dopant and the second host, and the fourth light-emitting layer includes the second dopant and the second host.

公开(公告)号：US20140070196A1

公开(公告)日：2014-03-13

申请号：US14023670

申请日：2013-09-11

Applicant: LG Display Co., Ltd.

Inventor： Shin-Han Kim ,  Hwa-Kyung Kim ,  Hong-Seok Choi ,  Gwi-Jeong Cho ,  Youn-Seok Kam ,  Mi-Young Han ,  Hye-Min Oh ,  Tae-Shick Kim ,  Seong-Su Jeon ,  Chi-Yul Song

IPC: H01L51/50

CPC classification number: H01L51/5024 ,  H01L51/504 ,  H01L2251/5384

Abstract: Disclosed is an organic light emitting display device with an enhanced light emission efficiency at high current and an enhancement in panel efficiency through prevention of a roll-off phenomenon. The organic light emitting display device includes first and second electrodes formed on a substrate facing each other. A hole injection layer, a hole transport layer, at least first and second light emitting layers, and an electron transport layer are sequentially stacked between the first and second electrodes. The first light emitting layer includes different hosts while being doped with the same dopant in different dosages. The first light emitting layer includes a first host and a second host, and the second light emitting layer includes the first host and a third host different from the second host. The first and second light emitting layers are doped with the same phosphorescent yellow-phosphorescent green dopant in the same dosage.

Abstract translation: 公开了一种在高电流下具有增强的发光效率并通过防止滚降现象提高面板效率的有机发光显示装置。 有机发光显示装置包括形成在彼此面对的基板上的第一和第二电极。 空穴注入层，空穴传输层，至少第一和第二发光层以及电子传输层依次层叠在第一和第二电极之间。 第一发光层包括不同的主体，同时以不同的剂量掺杂相同的掺杂剂。 第一发光层包括第一主体和第二主体，第二发光层包括第一主机和与第二主机不同的第三主机。 第一和第二发光层以相同的剂量掺杂相同的磷光黄磷光绿色掺杂剂。

公开(公告)号：US08884274B2

公开(公告)日：2014-11-11

申请号：US13648982

申请日：2012-10-10

Applicant: LG Display Co., Ltd.

Inventor： Mi-Young Han ,  Chang-Je Sung ,  Youn-Seok Kam ,  Shin-Han Kim

IPC: H01L35/24

CPC classification number: H01L51/5004 ,  H01L51/5016 ,  H01L51/504

Abstract: A device for achieving reduced driving voltage and enhanced color stability under high luminance conditions includes an anode and cathode arranged on a substrate to be opposite each other, a charge generation layer between the anode and the cathode, a first stack formed between the anode and the charge generation layer and including a first light emitting layer, and a second stack formed between the charge generation layer and the cathode and including a second light emitting layer in which first and second hosts are doped with phosphorescent dopant, a HOMO level of the first host is greater than that of the second host, and a LUMO level of the first host is greater than an LUMO level of the second host.

Abstract translation: 用于在高亮度条件下实现降低的驱动电压和增强的颜色稳定性的装置包括布置在基板上彼此相对的阳极和阴极，阳极和阴极之间的电荷产生层，形成在阳极和阴极之间的第一堆叠 电荷产生层并且包括第一发光层和形成在电荷产生层和阴极之间的第二堆叠，并且包括其中第一和第二主体掺杂有磷光掺杂剂的第二发光层，第一主体的HOMO能级 大于第二主机的LUMO级别，并且第一主机的LUMO级别大于第二主机的LUMO级别。

公开(公告)号：US08847216B2

公开(公告)日：2014-09-30

申请号：US13724308

申请日：2012-12-21

Applicant: LG Display Co., Ltd.

Inventor： Hwa Kyung Kim ,  Chang Wook Han ,  Do Hyung Kim ,  Hongseok Choi ,  Yoon Heung Tak ,  Ki-Woog Song ,  Mi-Young Han ,  Jimin Kim ,  Hye Min Oh

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

CPC classification number: H01L51/5203 ,  H01L27/3209 ,  H01L27/3244 ,  H01L51/5004

Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor, an organic emission layer, and a second electrode formed on the organic emission layer. The organic emission layer includes a first stack that includes a first emission layer formed on the first electrode to emit first color light, a second stack that includes a second emission layer formed on the first electrode to emit second color light, and a charge generation layer formed between the first and second stacks.

Abstract translation: 公开了一种有机发光显示装置。 有机发光显示装置包括基板，形成在基板上的薄膜晶体管，形成在薄膜晶体管上的第一电极，有机发光层和形成在有机发光层上的第二电极。 有机发光层包括：第一叠层，其包括形成在第一电极上以发射第一色光的第一发射层;第二堆叠，包括形成在第一电极上以发射第二色光的第二发射层;以及电荷产生层 形成在第一和第二堆叠之间。

公开(公告)号：US09842885B2

公开(公告)日：2017-12-12

申请号：US15181793

申请日：2016-06-14

Applicant: LG DISPLAY CO., LTD.

Inventor： Taesun Yoo ,  Hongseok Choi ,  Mi-Young Han ,  JungSoo Park

IPC: H01L27/32 ,  H01L51/50

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.

公开(公告)号：US20140183499A1

公开(公告)日：2014-07-03

申请号：US14139314

申请日：2013-12-23

Applicant: LG Display Co., Ltd.

Inventor： Seung-Hyun Kim ,  Byung-Chul Ahn ,  Chang-Wook Han ,  Hee-Suk Pang ,  Hong-Seok Choi ,  Yoon-Heung Tak ,  Mi-Young Han ,  Tae-Shick Kim

IPC: H01L27/32 ,  H01L51/56

CPC classification number: H01L27/3213 ,  H01L27/322 ,  H01L51/504 ,  H01L51/56

Abstract: An organic light emitting display device with enhanced luminous efficiency and color viewing angle and a method of manufacturing the same are disclosed. The method includes forming a first electrode of each of red, green, blue and white sub-pixels on a substrate, forming a white organic common layer on the first electrodes, and forming a second electrode on the white organic common layer, wherein the first electrodes each includes multiple transparent conductive layers and is formed such that a thickness of the first electrode of each of two sub-pixels among the red, green, blue and white sub-pixels is greater than a thickness of the first electrode of each of the other two sub-pixels, and at least two layers excluding the lowermost layer among the multiple transparent conductive layers of each first electrode are formed to cover opposite sides of the lowermost layer.

Abstract translation: 公开了一种具有增强的发光效率和彩色视角的有机发光显示装置及其制造方法。 该方法包括在基板上形成红色，绿色，蓝色和白色子像素中的每一个的第一电极，在第一电极上形成白色有机共同层，并在白色有机共同层上形成第二电极，其中第一 电极各自包括多个透明导电层，并且形成为使得红色，绿色，蓝色和白色子像素中的两个子像素中的每一个的第一电极的厚度大于第一电极的厚度 其他两个子像素，并且在每个第一电极的多个透明导电层中除了最下层之外的至少两个层被形成为覆盖最下层的相对侧。

公开(公告)号：US11430834B2

公开(公告)日：2022-08-30

申请号：US17129359

申请日：2020-12-21

Applicant: LG Display Co., Ltd.

Inventor： Mi-Young Han ,  Jung-Keun Kim ,  Tae-Shick Kim

IPC: H01L27/32 ,  H01L51/52

Abstract: A display device, includes a substrate having at least two colored subpixels and a white subpixel separately arranged thereon; a first anode having a first thickness at each of the colored subpixels on the substrate; a second anode, having a thickness smaller than the first thickness, at the white subpixel on the substrate; an organic stack comprising a first stack having a first blue emission layer, a second stack having a second blue emission layer, and a third stack having at least one of emission layers having a longer wavelength than the blue emission layers, which are provided in sequence on the first anode in the colored subpixel and the second anode in the white subpixel; a cathode over the organic stack; and a compensation pattern between the second anode and the substrate.

公开(公告)号：US09960379B2

公开(公告)日：2018-05-01

申请号：US15618017

申请日：2017-06-08

Applicant: LG Display Co., Ltd.

Inventor： Mi-Young Han ,  Chang Wook Han ,  Tae Il Kum ,  Gwi Jeong Cho ,  Tae Shick Kim ,  Se Ung Kim ,  Hee Dong Choi

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/504 ,  H01L51/5044 ,  H01L51/5265 ,  H01L51/5278

Abstract: Disclosed is a white organic light emitting device for enhancing emission efficiency and a color viewing angle or a color reproduction rate. The white organic light emitting device includes a first emission part between a first electrode and a second electrode, the first emission part having a first emission layer, a second emission part on the first emission part, the second emission part having a second emission layer, and a third emission part on the second emission part, the third emission part having a third emission layer. At least two emission layers of the first to third emission layers emit lights having a same color to enhance emission efficiency and a color viewing angle, and the at least two emission layers are adjacent to each other.

公开(公告)号：US09786861B2

公开(公告)日：2017-10-10

申请号：US14465299

申请日：2014-08-21

Applicant: LG Display Co., Ltd.

Inventor： Shin-Han Kim ,  Hwa-Kyung Kim ,  Hong-Seok Choi ,  Mi-Young Han ,  Hye-Min Oh ,  Tae-Shick Kim ,  Seung-Hyun Kim

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

CPC classification number: H01L51/5044 ,  H01L27/3209

Abstract: Disclosed herein is a white organic light emitting device including various emission layers with improved luminous efficiency, an increased color viewing angle, and low power consumption. The white organic light emitting device includes at least two charge generation layers and at least three stacks between a first electrode and a second electrode. The first stack includes an emission layer having a wavelength range of about 440 to about 470 nm, the second stack includes an emission layer having a wavelength range of about 530 to about 570 nm, and the third stack includes an emission layer having a wavelength range of about 590 to about 620 nm and an emission layer having a wavelength range of about 440 to about 470 nm.

公开(公告)号：US09425422B2

公开(公告)日：2016-08-23

申请号：US14023670

申请日：2013-09-11

Applicant: LG Display Co., Ltd.

Inventor： Shin-Han Kim ,  Hwa-Kyung Kim ,  Hong-Seok Choi ,  Gwi-Jeong Cho ,  Youn-Seok Kam ,  Mi-Young Han ,  Hye-Min Oh ,  Tae-Shick Kim ,  Seong-Su Jeon ,  Chi-Yul Song

IPC: H01L29/08 ,  H01L51/50

CPC classification number: H01L51/5024 ,  H01L51/504 ,  H01L2251/5384

Abstract: Disclosed is an organic light emitting display device with an enhanced light emission efficiency at high current and an enhancement in panel efficiency through prevention of a roll-off phenomenon. The organic light emitting display device includes first and second electrodes formed on a substrate facing each other. A hole injection layer, a hole transport layer, at least first and second light emitting layers, and an electron transport layer are sequentially stacked between the first and second electrodes. The first light emitting layer includes different hosts while being doped with the same dopant in different dosages. The first light emitting layer includes a first host and a second host, and the second light emitting layer includes the first host and a third host different from the second host. The first and second light emitting layers are doped with the same phosphorescent yellow-phosphorescent green dopant in the same dosage.

Abstract translation: 公开了一种在高电流下具有增强的发光效率并通过防止滚降现象提高面板效率的有机发光显示装置。 有机发光显示装置包括形成在彼此面对的基板上的第一和第二电极。 空穴注入层，空穴传输层，至少第一和第二发光层以及电子传输层依次层叠在第一和第二电极之间。 第一发光层包括不同的主体，同时以不同的剂量掺杂相同的掺杂剂。 第一发光层包括第一主体和第二主体，第二发光层包括第一主机和与第二主机不同的第三主机。 第一和第二发光层以相同的剂量掺杂相同的磷光黄磷光绿色掺杂剂。