公开(公告)号：US20240431141A1

公开(公告)日：2024-12-26

申请号：US18687957

申请日：2021-11-05

Applicant: Sharp Display Technology Corporation

Inventor： Norio MUROFUSHI ,  Eiji FUJIMOTO ,  Atsushi SHOHJI

IPC: H10K59/121 ,  H10K59/12

Abstract: An organic EL display device includes a resin substrate provided as a base substrate, a TFT layer provided on the resin substrate and in which TFTs are arranged for each subpixel, and
a plurality of photo spacers provided on the TFT layer, in which a recessed portion having a caldera shape that is open upward is formed at a top portion of each photo spacer,
each photo spacer and the recessed portion are formed in a circular shape in a plan view, and a ratio of a diameter of an opening end portion of the recessed portion to a diameter of a base portion of the photo spacer is greater than 0 and lower than 0.8.