公开(公告)号：US20210336142A1

公开(公告)日：2021-10-28

申请号：US17278126

申请日：2019-04-08

Applicant: Samsung Display Co., LTD.

Inventor： Heung Cheol JEONG ,  Byung Chul LEE ,  Myung Soo HUH ,  Jin Oh KWAG ,  Do Hun LEE

IPC: H01L51/00

Abstract: An inkjet printing apparatus, a dipole alignment method, and a display device manufacturing method are provided. The inkjet printing apparatus includes a stage, a print head part disposed above the stage, and an electric field generating part that provides an electric field to a space between the stage and the print head part. The dipole alignment method includes providing an electric field at an area above a target substrate, spraying ink including a dipole onto the target substrate through the area, and landing the dipole on the target substrate. The display device manufacturing method includes preparing a base layer on which first and second electrodes are disposed, spraying ink including a light emitting element onto the base layer through the area, landing the light emitting element between the first and second electrodes.

公开(公告)号：US20230286292A1

公开(公告)日：2023-09-14

申请号：US18013633

申请日：2021-06-04

Applicant: Samsung Display Co., LTD.

Inventor： Byung Chul LEE ,  Heung Cheol JEONG ,  Myung Soo HUH ,  Jin Oh KWAG ,  Do Hun LEE

IPC: B41J11/00

CPC classification number: B41J11/0015 ,  B41J11/005

Abstract: An inkjet printing apparatus includes: an airflow stage extending in a first direction; a print head unit disposed above the airflow stage; and an electric field generating unit that moves in the first direction and generates electric field above the airflow stage.

公开(公告)号：US20230055700A1

公开(公告)日：2023-02-23

申请号：US17904370

申请日：2020-06-02

Applicant: Samsung Display Co., LTD.

Inventor： Byung Chul LEE ,  Heung Cheol JEONG ,  Myung Soo HUH ,  Cheol Lae ROH ,  Do Hun LEE

IPC: B41J2/045 ,  G01N15/14

Abstract: Provided are an inkjet printing apparatus and a method for inspecting an inkjet head using same. The inkjet printing apparatus comprises: an inspection stage unit on which an inspection substrate is seated; an inkjet head unit including at least one inkjet head that ejects ink containing dipoles and a solvent in which the dipoles disperse, on the inspection stage unit; and a particle count inspection unit that is located so as to be spaced apart from the inkjet head unit in one direction. The particle count inspection unit comprises: a first heat treatment unit that is located on the top portion of the inspection stage unit; and a first sensing unit that is located on the bottom portion of the inspection stage unit and measures the number of dipoles sprayed onto the inspection substrate.