US 12,243,864 B2
Micro-LED displays to reduce subpixel crosstalk
Lisong Xu, San Jose, CA (US); Byung Sung Kwak, Portland, OR (US); Mingwei Zhu, San Jose, CA (US); Hou T. Ng, Campbell, CA (US); Nag B. Patibandla, Pleasanton, CA (US); and Christopher Dennis Bencher, Cupertino, CA (US)
Assigned to Applied Materials, Inc., Santa Clara, CA (US)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Nov. 16, 2023, as Appl. No. 18/511,865.
Application 18/511,865 is a continuation of application No. 17/701,607, filed on Mar. 22, 2022.
Claims priority of provisional application 63/166,193, filed on Mar. 25, 2021.
Prior Publication US 2024/0088116 A1, Mar. 14, 2024
Int. Cl. H01L 25/16 (2023.01); H01L 25/075 (2006.01); H01L 33/00 (2010.01); H01L 33/44 (2010.01); H01L 33/48 (2010.01); H01L 33/54 (2010.01); H01L 33/58 (2010.01); H01L 33/60 (2010.01); H01L 33/32 (2010.01)
CPC H01L 25/167 (2013.01) [H01L 25/0753 (2013.01); H01L 33/0095 (2013.01); H01L 33/483 (2013.01); H01L 33/58 (2013.01); H01L 33/60 (2013.01); H01L 33/32 (2013.01); H01L 33/44 (2013.01); H01L 33/54 (2013.01); H01L 2933/0033 (2013.01); H01L 2933/005 (2013.01); H01L 2933/0058 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A display screen pixel, comprising:
a backplane;
a plurality of light-emitting diodes disposed on the backplane, each light-emitting diode configured to emit UV light in a first wavelength range;
subpixel isolation walls disposed on the backplane, the subpixel isolation walls defining a plurality of subpixel wells, each respective subpixel well including a respective light-emitting diode from the plurality of light-emitting diodes with the respective light-emitting diode positioned between adjacent subpixel isolation walls, wherein the subpixel isolation walls include
a core of a first material, and
a coating covering a top surface and at least a portion of side surfaces of the core, wherein the coating is a second material that has a lower transmittance than the first material for the UV light in the first wavelength range, wherein the coating on the at least the portion of side surfaces does not extend below a top surface of each light-emitting diode in each subpixel well; and
one or more color conversion materials disposed in the subpixel wells over the light emitting diodes to convert the UV light in the first wavelength range to visible light.