公开(公告)号：US10431773B2

公开(公告)日：2019-10-01

申请号：US15669641

申请日：2017-08-04

Applicant: LG Display Co., Ltd.

Inventor： Eun Ah Song ,  Hyun Tae Byun ,  Jung Gi Kim ,  Kwang Nam Cho

IPC: H01L51/52 ,  H01L27/32

Abstract: Provided is an organic light emitting display device. The organic light emitting display device includes a substrate, an organic light emitting element on the substrate, a first encapsulation layer on the substrate and the organic light emitting element to seal the organic light emitting element, a second encapsulation layer on the first encapsulation layer, a particle cover layer on the second encapsulation layer corresponding to at least an organic light emitting element area, and a third encapsulation layer on the second encapsulation layer and the particle cover layer. The first encapsulation layer and the second encapsulation layer are different from each other in surface energy. When the particle cover layer is coated, the second encapsulation layer may have a higher spreadability. Thus, it is possible to improve scan mura or defect.

公开(公告)号：US10134646B2

公开(公告)日：2018-11-20

申请号：US15385255

申请日：2016-12-20

Applicant: LG DISPLAY CO., LTD.

Inventor： Hyuntae Byun ,  Eunah Song ,  Junggi Kim ,  Kwang Nam Cho

IPC: H01L21/66 ,  H01L51/52 ,  H01L27/32 ,  H01L51/56 ,  G09G3/00

Abstract: A display device and a testing method thereof are disclosed, in which a defect caused by an overflow of an organic film constituting an encapsulation film can be detected. The display device comprises a substrate including a display area where pixels are arranged, and a pad area including a plurality of pads formed outside the display area; an encapsulation film covering the display area, including at least one inorganic film and at least one organic film; a dam arranged between the display area and the pad area; and a conductive testing line arranged between the dam and the pad area and not electrically connected with another conductive line or electrode arranged on the substrate.