Thin anode high resolution advanced oled sub-pixel circuit and patterning

A device, comprising:

• a first sub-pixel and a second sub-pixel each comprising:
• isolation structures comprising an isolation material, the isolation structures disposed over a substrate, the isolation structures further comprising an outer portion and a lower sidewall;
• anodes disposed over the isolation structures, the anodes comprising an uppermost surface;
• a plurality of overhang structures comprising an overhang material, the overhang structures disposed over the outer portion of the isolation structures, the plurality of overhang structures further comprising:
• an upper portion having a bottom surface disposed on an outer portion of the anodes;
• and
• a lower portion with a lowermost surface disposed on of the isolation structures and extending past the lower sidewall of the isolation structures, a portion of the bottom surface extending past the lower sidewall of the isolation structures defining an overhang extension, wherein the lower sidewall of the isolation structure and a bottom surface of the overhang extension of the lower portion partially define a trench area;
• and
• an organic light emitting diode (OLED) material.

A method comprising:

• depositing an isolation layer over a substrate;
• depositing an anode layer over the isolation layer;
• forming a plurality of anodes using a photolithography process;
• depositing an overhang layer over the isolation layer and the anodes;
• etching a portion of the overhang layer;
• and
• performing a reactive ion etching (RIE) process to form a plurality of isolation structures and a plurality of overhang structures.