	US 11,942,576 B2
	Blue color converter for micro LEDs
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 Aug. 28, 2020, as Appl. No. 17/006,663.
Prior Publication US 2022/0069174 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 33/50 (2010.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); H01L 33/00 (2010.01)

CPC H01L 33/504 (2013.01) [C09K 11/025 (2013.01); C09K 11/06 (2013.01); H01L 33/005 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1033 (2013.01); C09K 2211/1037 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/1059 (2013.01); C09K 2211/1092 (2013.01); C09K 2211/185 (2013.01); H01L 2933/0041 (2013.01)]

18 Claims

1. A photocurable composition for forming a color conversion layer, the photocurable composition comprising:

a blue photoluminescent material selected to absorb ultraviolet light with a maximum wavelength in a range of about 300 nm to about 430 nm and to, while in a cured form of the composition in the color conversion layer, emit blue light with an emission peak in a range of about 420 nm to about 480 nm, wherein the full width at half maximum of the emission peak is less than 100 nm, and the photoluminescence quantum yield is in a range of 5% to 100%, and wherein the blue photoluminescent material is an organic material or an organometallic material;

one or more monomers; and

a photoinitiator that initiates polymerization of the one or more monomers in response to absorption of the ultraviolet light.