NOVELTY - An electrochemical cell (400) comprises a separator (410) (i.e. bank) formed on a first conductive layer (402) and surrounding each of adjacent metal oxide cells. The separator forms a matrix of cells on the first conductive layer. Part(s) of the separator is hydro- and/or oleophobic, where first conductive layer is hydro- and/or oleophilic.    USE - Used as multicolored and/or grayscale electrochemical cell for use as dye-sensitized solar cell or electrochromic display.    ADVANTAGE - The electrochemical cell has improved picture quality with respect to blurring (bleeding) and grayscale (contrast) over that of the prior art. Fabrication of the electrochemical cell using inkjet printing is advantageous over screen printing fabrication as format scaling (up or down) does not require re-investment in machine hardware. Inkjet fabrication is software controlled and the software can be reconfigured without the expense of commissioning new screens. The drop on demand placement enabled by inkjet fabrication is less wasteful than screen printing. Unlike conventional inkjet overwriting, where each deposited layer is dried and then printed over to produce a thick deposition, the inkjet flood filling technique, which doses a confined region with a large volume of liquid to provide the required deposit thickness, produces fracture-free metal oxide layers.    DETAILED DESCRIPTION - An electrochemical cell comprises a metal oxide layer (403) formed on a first conductive layer, and comprising adjacent metal oxide cells, spaced from one another; a functional dye layer (404) formed on the metal oxide layer; a second conductive layer (406); and an electrolyte between the functional dye layer and the second conductive layer. The first and/or second conductive layers are transparent. The functional dye layer comprises greater than or equal to2 different colored functional dyes, each having a depth of color, such that at least some of the adjacent metal oxide cells have different colors. A separator (i.e. bank) is formed on the first conductive layer and surrounding each of the adjacent metal oxide cells. It forms a matrix of cells on the first conductive layer. Part(s) of the separator is hydro- and/or oleophobic, where first conductive layer is hydro- and/or oleophilic. An INDEPENDENT CLAIM is included for a method of forming an electrochemical cell.    DESCRIPTION OF DRAWING(S) - The figure illustrates an electrochemical cell.    Electrochemical cell (400)    First conductive layer (402)    Metal oxide layer (403)    Functional dye layer (404)    Second conductive layer (406)    Separator (410)