US 12,187,906 B2
Variable refractive index thin films
Alejo Lifschitz Arribio, Redmond, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Dec. 20, 2022, as Appl. No. 18/069,148.
Claims priority of provisional application 63/333,072, filed on Apr. 20, 2022.
Prior Publication US 2023/0340286 A1, Oct. 26, 2023
Int. Cl. C09D 11/322 (2014.01); C01G 19/00 (2006.01); C09D 11/36 (2014.01); G02B 1/10 (2015.01); G02B 27/01 (2006.01)
CPC C09D 11/322 (2013.01) [C01G 19/006 (2013.01); C09D 11/36 (2013.01); G02B 1/10 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
forming a first solution comprising a first tin (II) halide precursor and a first liquid solvent;
forming a second solution comprising a second tin (II) halide precursor and a second liquid solvent;
depositing the first solution and the second solution over respective regions of a deposition surface of a substrate to form a coating; and
annealing the coating to form a thin film having a variable refractive index.