US 12,276,772 B1
Organic solid crystals having helical structures formed using negative templates
Sheng Ye, Redmond, WA (US); Li Yao, Bothell, WA (US); Tingling Rao, Bellevue, WA (US); Lafe Joseph Purvis, II, Redmond, WA (US); Tanya Malhotra, Frederick, MD (US); Andrew John Ouderkirk, Kirkland, WA (US); and Arman Boromand, Issaquah, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed on Oct. 24, 2023, as Appl. No. 18/493,734.
Application 18/493,734 is a division of application No. 17/384,332, filed on Jul. 23, 2021, granted, now 11,796,716.
Claims priority of provisional application 63/057,176, filed on Jul. 27, 2020.
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/1333 (2006.01); C09K 19/02 (2006.01); C09K 19/38 (2006.01); G02B 1/08 (2006.01); G02B 5/30 (2006.01); G02F 1/1335 (2006.01)
CPC G02B 1/08 (2013.01) [C09K 19/02 (2013.01); C09K 19/38 (2013.01); G02B 5/3025 (2013.01); G02F 1/133526 (2013.01); G02F 1/133528 (2013.01); C09K 2219/03 (2013.01); C09K 2323/031 (2020.08); G02F 2202/022 (2013.01)] 14 Claims
 
1. An optical film, comprising:
a block copolymer film defining a plurality of helically shaped cavities; and
a plurality of helically shaped organic solid crystals positioned within the plurality of helically shaped cavities.