Patent ID: 8325316

Claim:
An electro-wetting display (EWD) device, comprising: a first substrate; a second substrate facing and spaced apart from the first substrate; a driving circuit layer provided on the second substrate, the driving circuit layer comprising a plurality of pixel electrodes and a plurality of switch elements respectively connected to the pixel electrodes, a plurality of fluid converging grooves being recessively defined on an inner-exposing surface of the driving circuit layer; a plurality of partition walls arranged in a lattice on the driving circuit layer thereby defining a plurality of fluid holding regions, wherein each fluid holding region is rectangular, and from a top-down perspective of each fluid holding region, each fluid holding region comprises two short sides and two long sides, the switching element arranged underneath the fluid holding region along one of the two long sides about halfway between the two short sides, wherein each of the fluid converging grooves is arranged correspondingly above one of the plurality of switch elements and exposed in each of the corresponding fluid holding regions; and a first fluid and a second fluid, the first and second fluids being immiscible with each other and disposed between the driving circuit layer and the first substrate, the second fluid being electro-conductive or polar, the first fluid provided between the driving circuit layer and the second fluid.