US 12,342,659 B2
Phosphor coatings for micro light-emitting diode (LED) displays
Jonglee Park, Troy, MI (US); and Susan Carol Ellis, Hampton (CA)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jul. 18, 2022, as Appl. No. 17/866,718.
Prior Publication US 2024/0021587 A1, Jan. 18, 2024
Int. Cl. H10H 20/01 (2025.01); H01L 25/075 (2006.01); H10H 20/851 (2025.01); H10H 20/854 (2025.01)
CPC H10H 20/0361 (2025.01) [H01L 25/0753 (2013.01); H10H 20/8512 (2025.01); H10H 20/854 (2025.01); H10H 20/0362 (2025.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
forming one or more light-emitting diodes (LEDs) on a backplane;
forming a protective layer on the backplane, the protective layer patterned to define one or more trenches, each trench exposing sidewalls of a respective one LED of the one or more LEDs and a surface of the backplane;
filling the trench with a color-shifting coating by depositing the color-shifting coating over the one or more LEDs, the protective layer, and the backplane until an overburden is formed above a surface of the protective layer and removing the overburden of the color-shifting coating to expose the surface of the protective layer; and
laminating the one or more LEDs, the backplane, the protective layer, and the color-shifting coating between one or more inner reinforcing layers and one or more outer layers to define a display.