公开(公告)号：US10553808B2

公开(公告)日：2020-02-04

申请号：US15673325

申请日：2017-08-09

Applicant: LG Display Co., Ltd.

Inventor： Sun Kap Kwon ,  Kwan Soo Kim ,  Kyu Il Han ,  Kwang Hyun Kim ,  Mi Na Kim

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic light-emitting display device has improved transmittance and UV light reliability by optimizing the thickness and material of a cathode. An organic light-emitting display device comprises an organic light-emitting element on a substrate, the organic light-emitting element including an anode, an organic light emitting layer, and a cathode, an organic layer between the substrate and the organic light-emitting element, and an auxiliary layer adjacent to the cathode and including a material having electron injection ability, such that the influence of UV lights on the OLED device is reduced, thereby improving the efficiency and lifespan of the organic light-emitting element.

公开(公告)号：US10115920B2

公开(公告)日：2018-10-30

申请号：US14570452

申请日：2014-12-15

Applicant: LG Display Co., Ltd.

Inventor： Kwang Hyun Kim

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

Abstract: An organic light emitting display device including a first electrode defined into red, green and blue sub-pixel regions; a hole injection layer disposed on the first electrode; a first hole transport layer disposed on the hole injection layer; first, second and third organic emission layers arranged on the first hole transport layer opposite to the respective red, green and blue sub-pixel regions; an electron transport layer disposed on the first, second and third organic emission layers; and a second electrode disposed on the electron transport layer. The second organic emission layer opposite to the green sub-pixel region is formed in a stacked structure including first and second hole host layers and a dopant host layer.

公开(公告)号：US09786720B2

公开(公告)日：2017-10-10

申请号：US14728360

申请日：2015-06-02

Applicant: LG DISPLAY CO., LTD.

Inventor： Mi-Na Kim ,  Kwang Hyun Kim ,  Jin Ho Park

IPC: H01L29/20 ,  H01L51/52 ,  H01L27/32 ,  H01L51/00 ,  H01L51/50 ,  H01L51/56

CPC classification number: H01L27/3211 ,  H01L51/0001 ,  H01L51/0021 ,  H01L51/504 ,  H01L51/506 ,  H01L51/5064 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/52 ,  H01L51/5203 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265 ,  H01L51/5271 ,  H01L51/56 ,  H01L2251/558

Abstract: An organic light emitting display device including, according to one embodiment, a substrate having first, second, and third pixel areas; a first hole transporting layer on the substrate; a first emission common layer on the first transport layer; a second emission common layer on the first emission common layer; a third emission common layer on the second emission common layer; a second hole transporting layer between the first hole transporting layer and the first emission common layer, the second hole transporting layer disposed on the first pixel area; a third hole transporting layer between the first and second emission common layers, the third hole transporting layer disposed on the second pixel area; and a fourth hole transporting layer between the second and third emission common layers, the fourth hole transporting layer disposed on the third pixel area.

公开(公告)号：US09065052B2

公开(公告)日：2015-06-23

申请号：US13720669

申请日：2012-12-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Mi-Na Kim ,  Kwang Hyun Kim ,  Jin Ho Park

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/00 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L27/3211 ,  H01L51/0001 ,  H01L51/0021 ,  H01L51/504 ,  H01L51/506 ,  H01L51/5064 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/52 ,  H01L51/5203 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265 ,  H01L51/5271 ,  H01L51/56 ,  H01L2251/558

Abstract: Discussed is an organic light emitting display device. The organic light emitting display device includes a substrate in which red, green, and blue pixel areas are defined, a first electrode and a first hole transporting layer that are formed on the substrate, first to third emission common layers formed in each of the pixel areas on the first hole transporting layer, and an electron transporting layer and a second electrode that are formed on the third emission common layer. Accordingly, color mixture is prevented, limitations due to a defective mask are overcome, a process is simplified, and the manufacturing cost is saved.

Abstract translation: 讨论的是有机发光显示装置。 有机发光显示装置包括其中限定了红色，绿色和蓝色像素区域的基板，形成在基板上的第一电极和第一空穴传输层，形成在每个像素中的第一至第三发光公共层 第一空穴传输层上的区域和形成在第三发射共同层上的电子传输层和第二电极。 因此，防止了颜色混合，克服了由于掩膜缺陷引起的限制，简化了工艺，节省了制造成本。

公开(公告)号：US09640591B2

公开(公告)日：2017-05-02

申请号：US14728221

申请日：2015-06-02

Applicant: LG DISPLAY CO., LTD.

Inventor： Mi-Na Kim ,  Kwang Hyun Kim ,  Jin Ho Park

IPC: H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  H01L51/50 ,  H01L51/56

CPC classification number: H01L27/3211 ,  H01L51/0001 ,  H01L51/0021 ,  H01L51/504 ,  H01L51/506 ,  H01L51/5064 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/52 ,  H01L51/5203 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5265 ,  H01L51/5271 ,  H01L51/56 ,  H01L2251/558

Abstract: A method of manufacturing an organic light emitting display device. The method according to one embodiment includes forming a first electrode over a substrate in which red, green, and blue pixel areas are defined; forming a first hole transporting layer on the first electrode; forming a second hole transporting layer in a position corresponding to the red pixel area; forming a first emission common layer; forming a third hole transporting layer on the first emission common layer in a position corresponding to the green pixel area; forming a second emission common layer; forming a fourth hole transporting layer on the second emission common layer in a position corresponding to the blue pixel area; forming a third emission common layer; forming an electron transporting layer on the third emission common layer; and forming a second electrode on the electron transporting layer.

公开(公告)号：US09324963B2

公开(公告)日：2016-04-26

申请号：US14581839

申请日：2014-12-23

Applicant: LG Display Co., Ltd.

Inventor： Ho Sung Kim ,  Kwang Hyun Kim

IPC: H01L31/12 ,  H01L27/32 ,  H01L51/50

CPC classification number: H01L51/5064 ,  H01L27/3211 ,  H01L51/5004 ,  H01L51/5072 ,  H01L51/508 ,  H01L2251/55

Abstract: An organic light emitting display device is disclosed which includes: a first electrode including red, green and blue sub-pixel regions; a first hole injection layer disposed on the first electrode; a first hole transport layer disposed on the hole injection layer; second, third and fourth hole transport layers arranged on the first hole transport layer corresponding to the red, green and blue regions, respectively; an organic emission layer disposed on the second, third and fourth hole transport layers; an electron transport layer disposed on the organic emission layer; and a second electrode disposed on the electron transport layer, the second, third and fourth hole transport layers each having a hole mobility different from an electron mobility of the electron transport layer.

Abstract translation: 公开了一种有机发光显示装置，其包括：包括红色，绿色和蓝色子像素区域的第一电极; 设置在所述第一电极上的第一空穴注入层; 设置在空穴注入层上的第一空穴传输层; 分别对应于红色，绿色和蓝色区域布置在第一空穴传输层上的第二，第三和第四空穴传输层; 设置在所述第二，第三和第四空穴传输层上的有机发射层; 设置在有机发光层上的电子传输层; 以及设置在所述电子传输层上的第二电极，所述第二，第三和第四空穴传输层各自具有不同于所述电子传输层的电子迁移率的空穴迁移率。