公开(公告)号：EP4020582A2

公开(公告)日：2022-06-29

申请号：EP21216966.8

申请日：2021-12-22

申请人： LG Display Co., Ltd.

发明人： LEE, Nayoung ,  CHOI, Yonghoon ,  JO, Soyoung ,  CHOI, Mingeun

IPC分类号： H01L27/32 ,  H01L51/52

摘要： Disclosed is a light emitting display device comprising a substrate including a plurality of pixels having an opening area, a light extraction pattern disposed in the opening area and configured to have a plurality of concave portions spaced apart from each other and a protruding portion surrounding each of the plurality of concave portions, and a light emitting device layer having a light emitting layer disposed over the light extraction pattern, wherein the light emitting device layer includes a non-emission area overlapped with a top portion of the protruding portion between the two adjacent concave portions.

公开(公告)号：EP4020582A3

公开(公告)日：2022-07-13

申请号：EP21216966.8

申请日：2021-12-22

申请人： LG Display Co., Ltd.

发明人： LEE, Nayoung ,  CHOI, Yonghoon ,  JO, Soyoung ,  CHOI, Mingeun

IPC分类号： H01L27/32 ,  H01L51/52

摘要： Disclosed is a light emitting display device comprising a substrate including a plurality of pixels having an opening area, a light extraction pattern disposed in the opening area and configured to have a plurality of concave portions spaced apart from each other and a protruding portion surrounding each of the plurality of concave portions, and a light emitting device layer having a light emitting layer disposed over the light extraction pattern, wherein the light emitting device layer includes a non-emission area overlapped with a top portion of the protruding portion between the two adjacent concave portions.

公开(公告)号：EP4203650A1

公开(公告)日：2023-06-28

申请号：EP23156484.0

申请日：2019-06-26

申请人： LG Display Co., Ltd.

发明人： CHOI, Yonghoon ,  KIM, Jintae ,  SIM, Dongmin ,  LEE, KangJu ,  KIM, Sookang ,  KIM, Taeshick

IPC分类号： H10K50/813 ,  H10K50/822 ,  H10K50/85 ,  H10K50/858 ,  H10K59/124 ,  H10K102/00

摘要： Disclosed is a light emitting display device that can enhance light extraction efficiency of light which is emitted from a light emitting element (ED). The light emitting display device includes a substrate (100) including a plurality of pixels (12) having an opening area (OA); an overcoating layer (170) over the substrate (100) and including an uneven portion (180) having a plurality of protruding portions (181) in the opening area (OA); and a light emitting element (ED) over the uneven portion (180), wherein: each of the plurality of protruding portions (181) includes: a bottom portion (181c); a top portion (181a) over the bottom portion (181c); and a curved portion (181b) between the top portion (181a) and the bottom portion (181c), the curved portion (181c) of each of the plurality of protruding portions (181) includes a first tangent slope at a half height of a total height from the bottom portion (181c) to the top portion (181a) and a second tangent slope at 4/5 of the total height, and wherein the second tangent slope is greater than the first tangent slope.

公开(公告)号：EP3588572A1

公开(公告)日：2020-01-01

申请号：EP19182519.9

申请日：2019-06-26

申请人： LG Display Co., Ltd.

发明人： CHOI, Yonghoon ,  KIM, Jintae ,  SIM, Dongmin ,  LEE, KangJu ,  KIM, Sookang ,  KIM, Taeshick

IPC分类号： H01L27/32 ,  H01L51/52

摘要： Disclosed is a light emitting display device that can enhance light extraction efficiency of light which is emitted from a light emitting element (ED). The light emitting display device includes an overcoating layer (170) on a substrate (100) and including a plurality of protruding portions (181), a first electrode (El) on the plurality of protruding portions (181), a light emitting layer (EL) on the first electrode (El), and a second electrode (E2) on the light emitting layer (EL). The first electrode (El) has a contour which conforms to the contours of the plurality of protruding portions (181). The light emitting layer (EL) has a contour different from the contours of the plurality of protruding portions (181).