US 12,144,206 B2
Conductive oxide overhang structures for OLED devices
Ji-young Choung, Hwaseong-si (KR); Chung-Chia Chen, Hsinchu (TW); Yu Hsin Lin, Zhubei (TW); Jungmin Lee, Santa Clara, CA (US); Dieter Haas, San Jose, CA (US); and Si Kyoung Kim, Gwangju-si (KR)
Assigned to Applied Materials, Inc., Santa Clara, CA (US)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Jul. 14, 2023, as Appl. No. 18/352,802.
Application 18/352,802 is a continuation of application No. 17/935,770, filed on Sep. 27, 2022, granted, now 11,751,438.
Application 17/935,770 is a continuation of application No. 17/662,960, filed on May 11, 2022, granted, now 11,456,345, issued on Sep. 27, 2022.
Application 17/662,960 is a continuation of application No. 17/647,214, filed on Jan. 6, 2022, granted, now 11,348,983, issued on May 31, 2022.
Application 17/647,214 is a continuation of application No. 17/389,934, filed on Jul. 30, 2021.
Claims priority of provisional application 63/179,074, filed on Apr. 23, 2021.
Prior Publication US 2024/0023379 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 59/122 (2023.01); H10K 50/84 (2023.01); H10K 71/16 (2023.01); H10K 102/10 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/84 (2023.02); H10K 71/16 (2023.02); H10K 2102/103 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a substrate;
overhang structures disposed over the substrate;
a plurality of sub-pixels, each sub-pixel is defined by a first overhang structure and a second overhang structure adjacent to each other, the first overhang structure and the second overhang structure having:
a base portion disposed over the substrate, the base portion comprising a first composition; and
a top portion disposed over the base portion, the top portion including a first extension and a second extension having a bottom surface wider than a top surface of the base portion, all of the bottom surface of the top portion including the first extension and the second extension is planar to all of the top surface of the base portion, the top portion comprising a metal of a second composition different than the first composition, wherein:
the first extension of the top portion of the first overhang structure extends laterally past the base portion and is disposed entirely above sidewalls of the base portion; and
the second extension of the top portion of the second overhang structure extends laterally past the base portion and is disposed entirely above the sidewalls of the base portion;
an anode;
an organic light-emitting diode (OLED) material disposed over the anode; and
a cathode disposed over the OLED material, the cathode extending under the first extension of the top portion of the first overhang structure and the second extension of the top portion of the second overhang structure, wherein a cathode material of the cathode is different from the second composition;
an encapsulation layer disposed over the cathode, wherein the encapsulation layer extends under the first extension of the top portion of the first overhang structure and the second extension of the top portion of the second overhang structure past the cathode along the sidewall of the base portion, and contacts the bottom surface of the top portion.