Patent ID: 7749916

Claim:
A method of forming a sub-pixel frame for a display device over a substrate, comprising the steps of: depositing a phase change material over the substrate; the phase change material deposited as droplets using a printing system comprising a printhead, such that a plurality of said droplets are deposited so as to coalesce; the printhead including at least one ejector for ejecting the phase change material in liquid phase; the phase change material deposited in a first printed pattern such that the first printed pattern of phase change material remains following a change from liquid phase to solid phase of the phase change material; the first printed pattern defining gaps; depositing a target material at least partially into the gaps to form target material features; hardening the target material features to form a sub-pixel frame; and removing the phase change material, leaving the sub-pixel frame on the substrate, the sub-pixel frame defining at least one well for receiving material deposited therein.