Hui Du

US Patent:

20210355332, Nov 18, 2021

Filed:

Jul 21, 2021

Appl. No.:

17/381983

Inventors:

- Billerica MA, US
Jason D. FEICK - Auburndale MA, US
James H. ABORN - Medford MA, US
John LOCK - Wakefield MA, US
Kosta LADAVAC - Somerville MA, US
Erik DUNKERLEY - Billerica MA, US
Hui DU - Milpitas CA, US

International Classification:

C09D 5/44
G02F 1/1675
G02F 1/1681

Abstract:

Improved formulations of electrophoretic media that can be incorporated into displays, front plane laminates, inverted front plane laminates, or color changing films. The formulations include a non-polar fluid, a plurality of first charged particles, and charge control agents (CCA) including a quaternary amine and an unsaturated polymeric tail comprising monomers of at least 10 carbon atoms in length. The formulations show improved switching speeds, as well as a larger dynamic range at low temperatures (i.e., below about 0 C.), where compared to state-of-the-art electrophoretic media.

US Patent:

20170097556, Apr 6, 2017

Filed:

Oct 4, 2016

Appl. No.:

15/284887

Inventors:

- Billerica MA, US
Jason D. FEICK - Auburndale MA, US
James H. ABORN - Medford MA, US
John LOCK - Wakefield MA, US
Kosta LADAVAC - Somerville MA, US
Erik DUNKERLEY - Billerica MA, US
Hui DU - Milpitas CA, US

International Classification:

G02F 1/167
C09D 5/44

Abstract:

Improved formulations of electrophoretic media that can be incorporated into displays, front plane laminates, inverted front plane laminates, or color changing films. The formulations include a non-polar fluid, a plurality of first charged particles, and charge control agents (CCA) including a quaternary amine and an unsaturated polymeric tail comprising monomers of at least 10 carbon atoms in length. The formulations show improved switching speeds, as well as a larger dynamic range at low temperatures (i.e., below about 0 C.), where compared to state-of-the-art electrophoretic media.