US 11,656,525 B2
Electro-optic fiber and methods of making the same
Jay William Anseth, Canton, MA (US); and Richard J. Paolini, Jr., Framingham, MA (US)
Assigned to E Ink Corporation, Billerica, MA (US)
Filed by E INK CORPORATION, Billerica, MA (US)
Filed on Sep. 27, 2019, as Appl. No. 16/585,218.
Claims priority of provisional application 62/739,684, filed on Oct. 1, 2018.
Prior Publication US 2020/0103720 A1, Apr. 2, 2020
Int. Cl. G02F 1/16757 (2019.01); G02F 1/167 (2019.01); D01F 8/00 (2006.01)
CPC G02F 1/16757 (2019.01) [D01F 8/00 (2013.01); G02F 1/167 (2013.01); D10B 2401/16 (2013.01); D10B 2401/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electro-optic fiber comprising:
a conductive fiber;
a layer of electro-optic medium on the conductive fiber, wherein the electro-optic medium comprises a binder and a plurality of microcapsules containing a plurality of electrophoretic particles dispersed in a fluid;
a light-transmissive semi-conductive polymeric layer on an outer surface of the electro-optic medium, wherein the light-transmissive semi-conductive polymeric layer comprises a polyacrylate, a poly(meth)acrylate, a polyvinyl alcohol, a gelatin, or a polyvinyl pyrrolidone, and a dopant comprising tetrabutylammonium hexafluorophosphate or 1-butyl-3-methylimidazolium hexafluorophosphate; and
a conductor wherein at least a portion of the light-transmissive semi-conductive polymeric layer is between the conductor and the electro-optic medium.