US 11,855,241 B2
LED device having blue photoluminescent material and red/green quantum dots
Yingdong Luo, Newark, CA (US); Lisong Xu, San Jose, CA (US); Sivapackia Ganapathiappan, Los Altos, CA (US); Hou T. Ng, Campbell, CA (US); Byung Sung Kwak, Portland, OR (US); Mingwei Zhu, San Jose, CA (US); and Nag B. Patibandla, Pleasanton, CA (US)
Assigned to Applied Materials, Inc., Santa Clara, CA (US)
Filed by Applied Materials, Inc., Santa Clara, CA (US)
Filed on Jul. 21, 2022, as Appl. No. 17/870,769.
Application 17/870,769 is a continuation of application No. 17/006,690, filed on Aug. 28, 2020, granted, now 11,404,612.
Prior Publication US 2022/0367763 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 33/50 (2010.01); H01L 33/00 (2010.01); H01L 33/06 (2010.01); H01L 27/15 (2006.01)
CPC H01L 33/504 (2013.01) [H01L 27/156 (2013.01); H01L 33/005 (2013.01); H01L 33/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a plurality of light-emitting diodes that includes a first multiplicity of light-emitting diodes and a second multiplicity of light-emitting diodes, each light emitting diode of the plurality of light emitting diodes configured to emit radiation in a wavelength band in the UV range;
a first cured composition in contact with a surface through which radiation is emitted from the first multiplicity of the light-emitting diodes, wherein the first cured composition includes
a first photopolymer, and
a blue photoluminescent material that is free of quantum dots and selected to emit blue light in response to absorption of the radiation in the wavelength band from each of the light-emitting diodes of the first multiplicity of light-emitting diodes; and
a second cured composition in contact with a surface through which radiation is emitted from the second multiplicity of light-emitting diodes, wherein the second cured composition includes
a second photopolymer, and
quantum dots embedded in the second photopolymer and selected to emit red or green light in response to absorption of the radiation in the wavelength band from each of the light-emitting diodes of the second multiplicity of light-emitting diodes.