公开(公告)号：US20250018718A1

公开(公告)日：2025-01-16

申请号：US18613128

申请日：2024-03-22

Applicant: Samsung Display Co., Ltd.

Inventor： HYEMIN LEE ,  JAESIK KIM ,  JUNGHAN SEO ,  KWANHYUCK YOON ,  SEUNGHO YOON ,  BYEONGJUN LEE ,  SEUNGGUN CHAE

IPC: B41J2/165

Abstract: A head cleaning method includes contacting a nozzle surface of a head in which nozzle holes are defined with an absorbent on a pressurizer, starting a wiping operation at a first edge portion of the head closest to the pressurizer at a first position, and ending the wiping operation at a second edge portion of the head furthest away from the pressurizer at the first position, positioning the pressurizer at a second position to define a first angle between a first imaginary line parallel to a longitudinal direction of the head and a second imaginary line parallel to a longitudinal direction of the pressurizer, and starting the wiping operation at a third edge portion of the head closest to the pressurizer at the second position, and ending the wiping operation at a fourth edge portion of the head furthest away from the pressurizer at the second position.

公开(公告)号：US20230029503A1

公开(公告)日：2023-02-02

申请号：US17740422

申请日：2022-05-10

Applicant: Samsung Display Co., Ltd.

Inventor： SEUNG-YEON CHAE ,  SEUNGWOOK KWON ,  WOO YONG SUNG ,  SEOYEON LEE ,  SEUNGGUN CHAE

IPC: H01L25/16 ,  H01L23/00

Abstract: A display device includes an active region, a pad region adjacent to the active region, a first peripheral region between the active region and the pad region, a second peripheral region outside the active region and spaced apart from the pad region, a base layer, a circuit layer on the base layer, a light-emitting element layer on the circuit layer and corresponding to the active region, a capping layer on the light-emitting element layer, a dam part extended along the active region and in the first peripheral region and the second peripheral region, and a protruding part outside the dam part in the second peripheral region and on the base layer.

公开(公告)号：US20230014088A1

公开(公告)日：2023-01-19

申请号：US17935570

申请日：2022-09-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wooyong Sung ,  WONWOO CHOI ,  SOOYOUN KIM ,  JUNGHAN SEO ,  SEOYEON LEE ,  HYOUNGSUB LEE ,  MOONWON CHANG ,  SEUNGGUN CHAE ,  SEUNGYONG SONG

IPC: H01L51/52 ,  G06F3/044 ,  G06F3/041 ,  H01L21/762 ,  H01L27/32 ,  H01L51/00

Abstract: A display device includes: a substrate that includes an opening and a display area that surrounds the opening; a plurality of grooves formed in the substrate between the opening and the display area; a display element layer on the substrate and that includes a plurality of display elements in the display area; a thin-film encapsulation layer disposed on the display element layer, the thin-film encapsulation layer including a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked; a planarization layer disposed over the plurality of grooves and that includes an organic insulating material, wherein the planarization layer is disposed over the second inorganic encapsulation layer, and the organic encapsulation layer is disposed below the second inorganic encapsulation layer.

公开(公告)号：US20210066418A1

公开(公告)日：2021-03-04

申请号：US16991492

申请日：2020-08-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JUNGHAN SEO ,  WOOYONG SUNG ,  WOOYOUNG KIM ,  SEUNGYONG SONG ,  SUNGHOON YANG ,  KWANHYUCK YOON ,  SEUNGGUN CHAE ,  WONWOO CHOI

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

Abstract: A display apparatus includes a substrate, a display area disposed on the substrate and including a plurality of pixels, a first planarization layer disposed on the substrate, a second planarization layer disposed on the first planarization layer, a pixel-defining layer disposed on the second planarization layer and covering at least one edge of a first electrode of each of the plurality of pixels, a plurality of first holes disposed between the plurality of pixels and spaced apart from the first electrode, and a first etching prevention layer disposed on a bottom surface of each of the first holes and on the first planarization layer. Each of the first holes includes an opening that passes through the second planarization layer and the pixel-defining layer.

公开(公告)号：US20200119304A1

公开(公告)日：2020-04-16

申请号：US16401536

申请日：2019-05-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： WONWOO CHOI ,  WOOYONG SUNG ,  SOOYOUN KIM ,  JUNGHAN SEO ,  SEOYEON LEE ,  HYOUNGSUB LEE ,  MOONWON CHANG ,  SEUNGGUN CHAE

IPC: H01L51/52 ,  H01L27/32

Abstract: A display panel includes a plurality of display elements arranged in a display area, an opening, a multi-layer including a first layer and a second layer disposed on the first layer, and a groove. Each display element includes a pixel electrode, an emission layer disposed on the pixel electrode, and an opposite electrode disposed on the emission layer. The display area surrounds the opening. The groove is located between the opening and the display area. The groove has an undercut cross-section that is concave in a thickness direction of the multi-layer, the second layer includes a pair of tips that protrude toward a center of the groove, and a length of each tip is less than about 2 μm.