公开(公告)号：US12130535B2

公开(公告)日：2024-10-29

申请号：US17623548

申请日：2020-07-01

Applicant: GAUZY LTD.

Inventor： Eyal Peso ,  Adrian Lofer ,  Tania Fadida ,  Dana Gal-Fuss

IPC: G02F1/17 ,  C09J7/25 ,  C09J7/35 ,  H01B1/08

CPC classification number: G02F1/172 ,  C09J7/255 ,  C09J7/35 ,  H01B1/08 ,  C09J2301/304 ,  C09J2467/00 ,  C09J2483/00

Abstract: A suspended-particle device with improved adhesion between the active and conductive layers is disclosed. The conductive layers are coated with an adhesion promoter that comprises at least one organosilane that covalently bonds to the surface of the conductive layer and comprises a cross-linkable moiety such as an acrylate. The active layer comprises a suspension of active particles in a polymer matrix that comprises a polymer having pendant cross-linkable moieties such as acrylates. Upon curing (e.g. by irradiation by ultraviolet light), the polymer matrix of the active layer cross-links with the cross-linkable moieties of the adhesion promoter, thereby binding the active and conductive layers.

公开(公告)号：US20210189141A1

公开(公告)日：2021-06-24

申请号：US16966978

申请日：2019-01-31

Applicant: Gauzy Ltd.

Inventor： Dana Gal-Fuss ,  Tania Fadida ,  Eyal Peso ,  Adrian Lofer

IPC: C09C1/56 ,  C09C3/10 ,  C09C3/06 ,  C09K19/54

Abstract: A method of preparing non-conductive coated pigment particles for use in liquid crystal applications. A dispersion is prepared of a pigment such as carbon black in a solution comprising a first solvent and a surfactant. The dispersion is disrupted in order to separate agglomerates. A non-conductive coating material is added. In some embodiments of the invention, the non-conductive coating comprises a polymer soluble in the first solvent, and the coating is prepared by addition of a second solvent in which the polymer is insoluble. In other embodiments, the non-conductive coating comprises a metal oxide, and the coating is prepared by addition of a metal alkoxide that hydrolyzes to form the coating. The non-conductive pigment particles are then separated from the supernatant liquid, dried, and reduced to a powder. Liquid crystal devices comprising the particles typically have a haze of less than 7% and a total transmittance of >55%.