公开(公告)号：US20220077252A1

公开(公告)日：2022-03-10

申请号：US17193347

申请日：2021-03-05

Applicant: Applied Materials, Inc.

Inventor： Ji-young CHOUNG ,  Dieter HAAS ,  Yu Hsin LIN ,  Jungmin LEE ,  Seong Ho YOO ,  Si Kyoung KIM

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

Abstract: Embodiments described herein relate to sub-pixel circuits and methods of forming sub-pixel circuits that may be utilized in a display such as an organic light-emitting diode (OLED) display. The device includes a plurality of sub-pixels, each sub-pixel of the plurality of sub-pixels defined by adjacent pixel-defining layer (PDL) structures with inorganic overhang structures disposed on the PDL structures, each sub-pixel having an anode, organic light-emitting diode (OLED) material disposed on the anode, and a cathode disposed on the OLED material. The device is made by a process including the steps of: depositing the OLED material and the cathode by evaporation deposition, and depositing an encapsulation layer disposed over the cathode.