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。

公开(公告)号：US08895969B2

公开(公告)日：2014-11-25

申请号：US13672977

申请日：2012-11-09

Applicant: LG Display Co., Ltd.

Inventor： Hwa-Kyung Kim ,  Sung-Hoon Pieh ,  Jae-II Song ,  Sung-Jae Ko

IPC: H01L33/00 ,  H01L51/00 ,  H01L27/32 ,  H05B33/14 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5048 ,  H01L27/3209 ,  H01L51/5265 ,  H01L2251/5376 ,  H05B33/14

Abstract: A white organic light emitting device, with improved color shift characteristics and improved efficiency according to viewing angle changes by controlling conditions for designing an optical path in organic material layers between a cathode and an anode or adjusting interior or exterior thicknesses of the organic material layers, has a structure including a first electrode and layers between the first electrode and a second electrode satisfies an optical path condition represented by the following equation n a ⁢ d a λ + ∑ j ⁢ ⁢ n j w ⁢ d j w λ = 1.85 ∼ 2.15 with respect to emissions of the first and second stacks, where λ is an emission peak wavelength of the first stack or the second stack, na and da are a refractive index and a thickness of a transparent electrode selected from the first and second electrode, and nw and dw are a refractive index and a thickness of any one of the layers disposed between the first electrode and the second electrode, respectively.

Abstract translation: 通过控制用于设计阴极和阳极之间的有机材料层中的光路的条件或调节有机材料层的内部或外部厚度，根据视角改变颜色偏移特性和改进效率的白色有机发光器件， 具有包括第一电极和第一电极与第二电极之间的层的结构满足由以下等式表示的光路条件：na da + + jjnnjwdjwλ= 1.85〜2.15，相对于 第一和第二堆叠，其中λ是第一堆叠或第二堆叠的发射峰值波长，na和da是从第一和第二电极选择的透明电极的折射率和厚度，nw和dw是折射率 指数和分别设置在第一电极和第二电极之间的层中的任一层的厚度。

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：US20130119357A1

公开(公告)日：2013-05-16

申请号：US13672977

申请日：2012-11-09

Applicant: LG Display Co., Ltd

Inventor： Hwa-Kyung Kim ,  Sung-Hoon Pieh ,  Jae-Il Song ,  Sung-Jae Ko

IPC: H01L51/50 ,  H05B33/14

CPC classification number: H01L51/5048 ,  H01L27/3209 ,  H01L51/5265 ,  H01L2251/5376 ,  H05B33/14

Abstract: A white organic light emitting device, with improved color shift characteristics and improved efficiency according to viewing angle changes by controlling conditions for designing an optical path in organic material layers between a cathode and an anode or adjusting interior or exterior thicknesses of the organic material layers, has a structure including a first electrode and layers between the first electrode and a second electrode satisfies an optical path condition represented by the following equation n a  d a λ + ∑ j   n j w  d j w λ = 1.85 ∼ 2.15 with respect to emissions of the first and second stacks, where λ is an emission peak wavelength of the first stack or the second stack, na and da are a refractive index and a thickness of a transparent electrode selected from the first and second electrode, and nw and dw are a refractive index and a thickness of any one of the layers disposed between the first electrode and the second electrode, respectively.

Abstract translation: 通过控制用于设计阴极和阳极之间的有机材料层中的光路的条件或调节有机材料层的内部或外部厚度，根据视角改变颜色偏移特性和改进效率的白色有机发光器件， 具有包括第一电极和在第一电极和第二电极之间的层的结构满足由以下等式表示的光路条件：对于发射的第一电极和第二电极的发射，满足由以下等式表示的光路条件：naλd +λ= 1.85〜2.15 第一和第二堆叠，其中λ是第一堆叠或第二堆叠的发射峰值波长，na和da是从第一和第二电极选择的透明电极的折射率和厚度，nw和dw是折射率 指数和分别设置在第一电极和第二电极之间的层中的任一层的厚度 。