公开(公告)号：US11214064B2

公开(公告)日：2022-01-04

申请号：US16603582

申请日：2018-04-02

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Laurie A. Coventry ,  David R. Thomas

IPC: B41J2/16 ,  B41J2/14

Abstract: In some examples, a fluidic die includes a substrate, a fluidic region comprising fluid chambers formed in a fluidic barrier layer supported by the substrate, fluidic actuators associated with the fluid chambers, electrical structures positioned away from the fluidic region, a metallic layer over the fluidic actuators, and an adherent barrier layer to adhere the metallic layer to the fluidic barrier layer. The adherent barrier layer includes a first adherent barrier layer portion comprising a dielectric layer and an adhesion layer, and a second adherent barrier layer portion comprising the adhesion layer and without the dielectric layer, the first adherent barrier layer portion formed over the electrical structures, and the second adherent barrier layer portion formed in the fluidic region, the adhesion layer of the second adherent barrier layer portion protruding into the fluid chambers.

公开(公告)号：US20210331475A1

公开(公告)日：2021-10-28

申请号：US16603582

申请日：2018-04-02

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Laurie A. Coventry ,  David R. Thomas

IPC: B41J2/16

Abstract: In some examples, a fluidic die includes a substrate, a fluidic region comprising fluid chambers formed in a fluidic barrier layer supported by the substrate, fluidic actuators associated with the fluid chambers, electrical structures positioned away from the fluidic region, a metallic layer over the fluidic actuators, and an adherent barrier layer to adhere the metallic layer to the fluidic barrier layer. The adherent barrier layer includes a first adherent barrier layer portion comprising a dielectric layer and an adhesion layer, and a second adherent barrier layer portion comprising the adhesion layer and without the dielectric layer, the first adherent barrier layer portion formed over the electrical structures, and the second adherent barrier layer portion formed in the fluidic region, the adhesion layer of the second adherent barrier layer portion protruding into the fluid chambers.