公开(公告)号：US09184405B2

公开(公告)日：2015-11-10

申请号：US14073709

申请日：2013-11-06

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Sung-Hoon Pieh ,  Seok-Joon Oh ,  Youn-Seok Kam ,  Dong-Hyuk Kim ,  Seon-Keun Yoo ,  Tae-Shick Kim

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

CPC classification number: H01L51/5024 ,  H01L27/3209 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/504 ,  H01L2251/5376 ,  H01L2251/5384

Abstract: An organic light emitting display device includes first and second electrodes facing each other on a substrate, at least one emission layer formed between the first and second electrodes, a hole transport layer formed between the first electrode and the emission layer, and an electron transport layer formed between the second electrode and the emission layer, wherein the emission layer includes a first emission mixed layer formed on the hole transport layer, the first emission mixed layer including a first hole-type host and a first phosphorescent dopant, and a second emission mixed layer formed between the first emission mixed layer and the electron transport layer, the second emission mixed layer including a first electron-type host and a second phosphorescent dopant.

Abstract translation: 有机发光显示装置包括在基板上彼此面对的第一和第二电极，形成在第一和第二电极之间的至少一个发射层，形成在第一电极和发射层之间的空穴传输层，以及电子传输层 形成在第二电极和发射层之间，其中发射层包括形成在空穴传输层上的第一发射混合层，第一发射混合层包括第一孔型主体和第一磷光掺杂剂，第二发射混合层 形成在第一发射混合层和电子传输层之间的第二发射混合层，第二发射混合层包括第一电子型主体和第二磷光掺杂剂。

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：US20140183475A1

公开(公告)日：2014-07-03

申请号：US14097675

申请日：2013-12-05

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Chang-Wook Han ,  Hong-Seok Choi ,  Sung-Hoon Pieh ,  Jeong-Dae Seo ,  Seok-Joon Oh ,  Youn-Seok Kam

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L27/3213 ,  H01L51/5004 ,  H01L51/5278 ,  H01L2251/552

Abstract: An organic light emitting display device includes a first electrode and a second electrode disposed on a substrate opposite to each other, a first stack including a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode, a second stack including a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode, and a charge generation layer disposed between the first stack and the second stack and including an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks. The P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer.

Abstract translation: 有机发光显示装置包括第一电极和设置在彼此相对的基板上的第二电极，第一堆叠包括空穴注入层，第一空穴传输层，第一发光层和第一电子传输层 依次堆叠在第一电极上，第二堆叠包括依次堆叠在第一堆叠和第二电极之间的第二空穴传输层，第二发光层和第二电子传输层，以及电荷产生层，设置在第一堆叠 和第二堆叠，并且包括N型电荷产生层和P型电荷产生层，以控制第一和第二堆叠之间的电荷平衡。 基于P型电荷产生层的体积，P型电荷产生层掺杂1％至20％的空穴传输材料。

公开(公告)号：US20130264551A1

公开(公告)日：2013-10-10

申请号：US13857279

申请日：2013-04-05

Applicant: LG DISPLAY CO., LTD.

Inventor： Sung-Hoon Pieh ,  Chang-Wook Han ,  Hong-Seok Choi ,  Ki-Woog Song ,  Hyung-June Kim

IPC: H01L51/50

CPC classification number: H01L51/5056 ,  H01L27/3209 ,  H01L51/5278 ,  H01L2251/5376 ,  H01L2251/552 ,  Y02T90/168 ,  Y04S30/12

Abstract: A tandem white organic light emitting device having high efficiency and long lifespan by adjusting characteristics of a hole transport layer adjacent to a charge generation layer consisting of p-type and n-type charge generation layer is disclosed, the p-type charge generation layer is formed of organic materials only, and at least one organic material contained in the p-type charge generation layer has a LUMO level of −6.0 eV to −4.5 eV.

Abstract translation: 公开了一种通过调节与由p型和n型电荷产生层组成的电荷产生层相邻的空穴传输层的特性而具有高效率和长寿命的串联白色有机发光器件，p型电荷产生层是 仅由有机材料形成，并且包含在p型电荷产生层中的至少一种有机材料具有-6.0eV至-4.5eV的LUMO能级。

公开(公告)号：US20130069077A1

公开(公告)日：2013-03-21

申请号：US13623452

申请日：2012-09-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Sung-Hoon Pieh ,  Sung-Jae Ko

IPC: H01L33/26

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5096 ,  H01L2251/5376 ,  H01L2251/55

Abstract: Disclosed white organic light emitting device includes an anode and a cathode opposing each other; a charge generation layer interposed between the anode and the cathode; a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer and a first light emitting layer emitting blue fluorescent light; and a second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer and a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and a hole mobility of the first hole transport layer is 5.0×10-4 cm2/s·V to 9.9×10-3 cm2/s·V.

Abstract translation: 公开的白色有机发光器件包括彼此相对的阳极和阴极; 介于阳极和阴极之间的电荷产生层; 插入在阳极和电荷产生层之间的第一堆叠，第一堆叠包括第一空穴传输层和发射蓝色荧光的第一发光层; 以及插入在电荷产生层和阴极之间的第二叠层，第二堆叠包括第二空穴传输层和通过用磷掺杂剂中的至少一种掺杂一个主体形成的第二发光层，其中第一 空穴传输层高于第一发光层的三线态能级，第一空穴传输层的空穴迁移率为5.0×10 -4 cm 2 / s·V〜9.9×10 -3 cm 2·s·V。

公开(公告)号：US10431776B2

公开(公告)日：2019-10-01

申请号：US14473889

申请日：2014-08-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Sung-Hoon Pieh ,  Seung-Ryong Joung ,  Tae-Il Kum ,  So-Yeon Ahn ,  Tae-Shick Kim

IPC: H01L51/52

Abstract: A white organic light emitting diode (OLED) includes a first electrode and a second electrode facing each other; a first charge generation layer and a second charge generation layer between the first and second electrodes; a first light emitting unit including a first emitting material layer emitting a first color, wherein the first light emitting unit is located between the first electrode and the first charge generation layer; a second light emitting unit including a second emitting material layer emitting a second color, wherein the second light emitting unit is located between the first charge generation layer and the second charge generation layer; and a third light emitting unit including a third emitting material layer emitting the second color, wherein the third light emitting unit is located between the second charge generation layer and the second electrode.

公开(公告)号：US09997739B2

公开(公告)日：2018-06-12

申请号：US13623452

申请日：2012-09-20

Applicant: LG Display Co., Ltd.

Inventor： Ki-Woog Song ,  Sung-Hoon Pieh ,  Sung-Jae Ko

IPC: H01L33/26 ,  H01L51/52 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L51/5004 ,  H01L51/5016 ,  H01L51/5096 ,  H01L2251/5376 ,  H01L2251/55

Abstract: Disclosed white organic light emitting device includes an anode and a cathode opposing each other; a charge generation layer interposed between the anode and the cathode; a first stack interposed between the anode and the charge generation layer, the first stack including a first hole transport layer and a first light emitting layer emitting blue fluorescent light; and a second stack interposed between the charge generation layer and the cathode, the second stack including a second hole transport layer and a second light emitting layer formed by doping one host with at least one of phosphorescent dopant, wherein a triplet energy level of the first hole transport layer is higher than a triplet energy level of the first light emitting layer, and a hole mobility of the first hole transport layer is 5.0×10−4 cm2/s·V to 9.9×10−3 cm2/s·V.

公开(公告)号：US08912534B2

公开(公告)日：2014-12-16

申请号：US13857279

申请日：2013-04-05

Applicant: LG Display Co., Ltd.

Inventor： Sung-Hoon Pieh ,  Chang-Wook Han ,  Hong-Seok Choi ,  Ki-Woog Song ,  Hyung-June Kim

IPC: H01L35/24 ,  H01L51/00 ,  H01L51/50

CPC classification number: H01L51/5056 ,  H01L27/3209 ,  H01L51/5278 ,  H01L2251/5376 ,  H01L2251/552 ,  Y02T90/168 ,  Y04S30/12

Abstract: A tandem white organic light emitting device having high efficiency and long lifespan by adjusting characteristics of a hole transport layer adjacent to a charge generation layer consisting of p-type and n-type charge generation layer is disclosed, the p-type charge generation layer is formed of organic materials only, and at least one organic material contained in the p-type charge generation layer has a LUMO level of −6.0 eV to −4.5 eV.

Abstract translation: 公开了一种通过调节与由p型和n型电荷产生层组成的电荷产生层相邻的空穴传输层的特性而具有高效率和长寿命的串联白色有机发光器件，p型电荷产生层是 仅由有机材料形成，并且包含在p型电荷产生层中的至少一种有机材料具有-6.0eV至-4.5eV的LUMO能级。

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 。

公开(公告)号：US11005061B2

公开(公告)日：2021-05-11

申请号：US14097675

申请日：2013-12-05

Applicant: LG DISPLAY CO., LTD.

Inventor： Ki-Woog Song ,  Chang-Wook Han ,  Hong-Seok Choi ,  Sung-Hoon Pieh ,  Jeong-Dae Seo ,  Seok-Joon Oh ,  Youn-Seok Kam

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

Abstract: An organic light emitting display device includes a first electrode and a second electrode disposed on a substrate opposite to each other, a first stack including a hole injection layer, a first hole transport layer, a first light emitting layer, and a first electron transport layer sequentially stacked on the first electrode, a second stack including a second hole transport layer, a second light emitting layer, and a second electron transport layer sequentially stacked between the first stack and the second electrode, and a charge generation layer disposed between the first stack and the second stack and including an N-type charge generation layer and a P-type charge generation layer to control charge balance between the first and second stacks. The P-type charge generation layer is doped with 1% to 20% of a hole transport material based on a volume of the P-type charge generation layer.