US 11,839,116 B2
OLED panel with trench overhang structures
Ji-young Choung, Hwaseong-si (KR); Jungmin Lee, Santa Clara, CA (US); Chung-chia Chen, San Jose, CA (US); Yusin Lin, Zhubei (TW); Dieter Haas, San Jose, CA (US); and Si Kyoung Kim, Gwangju-si (KR)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Dec. 13, 2022, as Appl. No. 18/065,124.
Application 18/065,124 is a continuation of application No. 17/661,320, filed on Apr. 29, 2022, granted, now 11,552,143.
Prior Publication US 2023/0354649 A1, Nov. 2, 2023
Int. Cl. H10K 59/122 (2023.01); H10K 50/822 (2023.01); H10K 59/173 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/822 (2023.02); H10K 59/173 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A device having a plurality of sub-pixels, each sub-pixel comprising:
a section of a substrate;
first and second pixel-defining layer (PDL) structures comprising a non-conductive material, each of the first and second PDL structures having a trench disposed between peripheral portions of an upper surface of each of the first and second PDL structures;
first and second inorganic overhangs, each of the first and second inorganic overhangs defined by an overhang extension of an inorganic layer disposed on sidewalls and the peripheral portions of the upper surface of the first and second PDL structures, the overhang extension extending laterally past the trench to define the first and second PDL overhangs;
an anode;
an organic light-emitting diode (OLED) material disposed on the anode, the inorganic layer disposed on the sidewalls and the peripheral portions of the upper surface of the first and second PDL structures, and the overhang extension of the inorganic layer; and
a cathode disposed on the OLED material disposed over:
the anode;
the inorganic layer disposed on the sidewalls and the peripheral portions of the upper surface of the first and second PDL structures; and
the overhang extension of the inorganic layer.