Patent ID: 8455271

Claim:
A method of fabricating a MEMS inkjet type print head comprising: separately providing an actuatable membrane component, the actuatable membrane component comprising a first substrate, a device layer formed on the first substrate, an oxide layer deposited on opposing planar surfaces of the device layer and between the device layer and the first substrate, the membrane component formed in the absence of an acid etch removing a sacrificial layer; forming a driver component of the print head using a method comprising: forming a passivation dielectric layer over a second substrate; forming an electrically conductive electrode layer on the passivation dielectric layer; forming a plurality of bonding features on the driver component; and etching the electrode layer to form a plurality of ground potential electrodes and a plurality of membrane electrodes from the electrically conductive electrode layer; bonding the separately provided actuatable membrane component to the driver component of the print head with the plurality of bonding features on the driver component, wherein a ground potential electrode and at least one of the plurality of membrane electrodes is located between adjacent bonding features and between the membrane component device layer and the second substrate, the membrane electrode positioned sufficiently proximate to the actuatable membrane component so as to provide movement of the membrane component device layer in response to a drive signal; and attaching a nozzle plate to the actuatable membrane component subsequent to the bonding, wherein neither the electrically conductive electrode layer nor the plurality of electrodes is exposed to an acid etch prior to attaching the nozzle plate to the actuatable membrane component.